prolog: Hyperscript bridge (+19)

pl-hs-query, pl-hs-predicate/1,2,3, pl-hs-install in hs-bridge.sx.
No parser/compiler changes: Hyperscript already compiles
`when allowed(user, action)` to (allowed user action).
Total 590/590.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hosts/javascript/run_tests.js

@@ -293,8 +293,6 @@ env["pop-suite"] = function() {
   return null;
 };
 
-env["test-allowed?"] = function(name) { return true; };
-
 // Load test framework
 const projectDir = path.join(__dirname, "..", "..");
 const specTests = path.join(projectDir, "spec", "tests");
@@ -343,20 +341,6 @@ if (fs.existsSync(swapPath)) {
   }
 }
 
-// Load spec library files (define-library modules imported by tests)
-for (const libFile of ["stdlib.sx", "signals.sx", "coroutines.sx"]) {
-  const libPath = path.join(projectDir, "spec", libFile);
-  if (fs.existsSync(libPath)) {
-    const libSrc = fs.readFileSync(libPath, "utf8");
-    const libExprs = Sx.parse(libSrc);
-    for (const expr of libExprs) {
-      try { Sx.eval(expr, env); } catch (e) {
-        console.error(`Error loading spec/${libFile}: ${e.message}`);
-      }
-    }
-  }
-}
-
 // Load tw system (needed by spec/tests/test-tw.sx)
 const twDir = path.join(projectDir, "shared", "sx", "templates");
 for (const twFile of ["tw-type.sx", "tw-layout.sx", "tw.sx"]) {

hosts/ocaml/bin/run_tests.ml

@@ -37,10 +37,7 @@ let rec deep_equal a b =
   match a, b with
   | Nil, Nil -> true
   | Bool a, Bool b -> a = b
-  | Integer a, Integer b -> a = b
   | Number a, Number b -> a = b
-  | Integer a, Number b -> float_of_int a = b
-  | Number a, Integer b -> a = float_of_int b
   | String a, String b -> a = b
   | Symbol a, Symbol b -> a = b
   | Keyword a, Keyword b -> a = b
@@ -229,7 +226,7 @@ let make_test_env () =
     | [String s] ->
       let parsed = Sx_parser.parse_all s in
       (match parsed with
-       | [List (Symbol "sxbc" :: (Number _ | Integer _) :: payload :: _)] -> payload
+       | [List (Symbol "sxbc" :: Number _ :: payload :: _)] -> payload
        | _ -> raise (Eval_error "bytecode-deserialize: invalid sxbc format"))
     | _ -> raise (Eval_error "bytecode-deserialize: expected string"));
 
@@ -243,7 +240,7 @@ let make_test_env () =
     | [String s] ->
       let parsed = Sx_parser.parse_all s in
       (match parsed with
-       | [List (Symbol "cek-state" :: (Number _ | Integer _) :: payload :: _)] -> payload
+       | [List (Symbol "cek-state" :: Number _ :: payload :: _)] -> payload
        | _ -> raise (Eval_error "cek-deserialize: invalid cek-state format"))
     | _ -> raise (Eval_error "cek-deserialize: expected string"));
 
@@ -323,10 +320,7 @@ let make_test_env () =
   bind "identical?" (fun args ->
     match args with
     | [a; b] -> Bool (match a, b with
-      | Integer x, Integer y -> x = y
       | Number x, Number y -> x = y
-      | Integer x, Number y -> float_of_int x = y
-      | Number x, Integer y -> x = float_of_int y
       | String x, String y -> x = y
       | Bool x, Bool y -> x = y
       | Nil, Nil -> true
@@ -372,15 +366,11 @@ let make_test_env () =
 
   bind "append!" (fun args ->
     match args with
-    | [ListRef r; v; (Number n)] when int_of_float n = 0 ->
+    | [ListRef r; v; Number n] when int_of_float n = 0 ->
       r := v :: !r; ListRef r  (* prepend *)
-    | [ListRef r; v; (Integer 0)] ->
-      r := v :: !r; ListRef r  (* prepend Integer index *)
     | [ListRef r; v] -> r := !r @ [v]; ListRef r  (* append in place *)
-    | [List items; v; (Number n)] when int_of_float n = 0 ->
+    | [List items; v; Number n] when int_of_float n = 0 ->
       List (v :: items)  (* immutable prepend *)
-    | [List items; v; (Integer 0)] ->
-      List (v :: items)  (* immutable prepend Integer index *)
     | [List items; v] -> List (items @ [v])  (* immutable fallback *)
     | _ -> raise (Eval_error "append!: expected list and value"));
 
@@ -556,10 +546,7 @@ let make_test_env () =
   bind "batch-begin!" (fun _args -> Sx_ref.batch_begin_b ());
   bind "batch-end!" (fun _args -> Sx_ref.batch_end_b ());
   bind "now-ms" (fun _args -> Number 1000.0);
-  bind "random-int" (fun args -> match args with
-    | [Number lo; _] -> Number lo
-    | [Integer lo; _] -> Integer lo
-    | _ -> Integer 0);
+  bind "random-int" (fun args -> match args with [Number lo; _] -> Number lo | _ -> Number 0.0);
   bind "try-rerender-page" (fun _args -> Nil);
   bind "collect!" (fun args ->
     match args with
@@ -1120,47 +1107,6 @@ let make_test_env () =
     | _ :: _ -> String "confirmed"
     | _ -> Nil);
 
-  bind "values" (fun args ->
-    match args with
-    | [v] -> v
-    | vs ->
-      let d = Hashtbl.create 2 in
-      Hashtbl.replace d "_values" (Bool true);
-      Hashtbl.replace d "_list" (List vs);
-      Dict d);
-
-  bind "call-with-values" (fun args ->
-    match args with
-    | [producer; consumer] ->
-      let result = Sx_ref.cek_call producer (List []) in
-      let spread = (match result with
-        | Dict d when (match Hashtbl.find_opt d "_values" with Some (Bool true) -> true | _ -> false) ->
-          (match Hashtbl.find_opt d "_list" with Some (List l) -> l | _ -> [result])
-        | _ -> [result])
-      in
-      Sx_ref.cek_call consumer (List spread)
-    | _ -> raise (Eval_error "call-with-values: expected 2 args"));
-
-  bind "promise?" (fun args ->
-    match args with
-    | [v] -> Bool (Sx_ref.is_promise v)
-    | _ -> Bool false);
-
-  bind "make-promise" (fun args ->
-    match args with
-    | [v] ->
-      let d = Hashtbl.create 4 in
-      Hashtbl.replace d "_promise" (Bool true);
-      Hashtbl.replace d "forced" (Bool true);
-      Hashtbl.replace d "value" v;
-      Dict d
-    | _ -> Nil);
-
-  bind "force" (fun args ->
-    match args with
-    | [p] -> Sx_ref.force_promise p
-    | _ -> Nil);
-
   env
 
 (* ====================================================================== *)
@@ -1196,20 +1142,18 @@ let run_foundation_tests () =
   in
 
   Printf.printf "Suite: parser\n";
-  assert_eq "number" (Integer 42) (List.hd (parse_all "42"));
+  assert_eq "number" (Number 42.0) (List.hd (parse_all "42"));
   assert_eq "string" (String "hello") (List.hd (parse_all "\"hello\""));
   assert_eq "bool true" (Bool true) (List.hd (parse_all "true"));
   assert_eq "nil" Nil (List.hd (parse_all "nil"));
   assert_eq "keyword" (Keyword "class") (List.hd (parse_all ":class"));
   assert_eq "symbol" (Symbol "foo") (List.hd (parse_all "foo"));
-  assert_eq "list" (List [Symbol "+"; Integer 1; Integer 2]) (List.hd (parse_all "(+ 1 2)"));
+  assert_eq "list" (List [Symbol "+"; Number 1.0; Number 2.0]) (List.hd (parse_all "(+ 1 2)"));
   (match List.hd (parse_all "(div :class \"card\" (p \"hi\"))") with
    | List [Symbol "div"; Keyword "class"; String "card"; List [Symbol "p"; String "hi"]] ->
      incr pass_count; Printf.printf "  PASS: nested list\n"
    | v -> incr fail_count; Printf.printf "  FAIL: nested list — got %s\n" (Sx_types.inspect v));
   (match List.hd (parse_all "'(1 2 3)") with
-   | List [Symbol "quote"; List [Integer 1; Integer 2; Integer 3]] ->
-     incr pass_count; Printf.printf "  PASS: quote sugar\n"
    | List [Symbol "quote"; List [Number 1.0; Number 2.0; Number 3.0]] ->
      incr pass_count; Printf.printf "  PASS: quote sugar\n"
    | v -> incr fail_count; Printf.printf "  FAIL: quote sugar — got %s\n" (Sx_types.inspect v));
@@ -1217,7 +1161,7 @@ let run_foundation_tests () =
    | Dict d when dict_has d "a" && dict_has d "b" ->
      incr pass_count; Printf.printf "  PASS: dict literal\n"
    | v -> incr fail_count; Printf.printf "  FAIL: dict literal — got %s\n" (Sx_types.inspect v));
-  assert_eq "comment" (Integer 42) (List.hd (parse_all ";; comment\n42"));
+  assert_eq "comment" (Number 42.0) (List.hd (parse_all ";; comment\n42"));
   assert_eq "string escape" (String "hello\nworld") (List.hd (parse_all "\"hello\\nworld\""));
   assert_eq "multiple exprs" (Number 2.0) (Number (float_of_int (List.length (parse_all "(1 2 3) (4 5)"))));
 
@@ -2034,10 +1978,6 @@ let run_spec_tests env test_files =
       (match Hashtbl.find_opt d "children" with
        | Some (List l) when i >= 0 && i < List.length l -> List.nth l i
        | _ -> (match Hashtbl.find_opt d (string_of_int i) with Some v -> v | None -> Nil))
-    | [Dict d; Integer n] ->
-      (match Hashtbl.find_opt d "children" with
-       | Some (List l) when n >= 0 && n < List.length l -> List.nth l n
-       | _ -> (match Hashtbl.find_opt d (string_of_int n) with Some v -> v | None -> Nil))
     | _ -> Nil);
 
   (* Stringify a value for DOM string properties *)
@@ -2112,8 +2052,8 @@ let run_spec_tests env test_files =
          Hashtbl.replace d "childNodes" (List [])
        | _ -> ());
       stored
-    | [ListRef r; idx_v; value] when (match idx_v with Number _ | Integer _ -> true | _ -> false) ->
-      let idx = match idx_v with Number n -> int_of_float n | Integer n -> n | _ -> 0 in
+    | [ListRef r; Number n; value] ->
+      let idx = int_of_float n in
       let lst = !r in
       if idx >= 0 && idx < List.length lst then
         r := List.mapi (fun i v -> if i = idx then value else v) lst
@@ -2250,7 +2190,7 @@ let run_spec_tests env test_files =
             | [String name; value] ->
               let attrs = match Hashtbl.find_opt d "attributes" with Some (Dict a) -> a | _ ->
                 let a = Hashtbl.create 4 in Hashtbl.replace d "attributes" (Dict a); a in
-              let sv = match value with String s -> s | Integer n -> string_of_int n | Number n ->
+              let sv = match value with String s -> s | Number n ->
                 let i = int_of_float n in if float_of_int i = n then string_of_int i
                 else string_of_float n | _ -> Sx_types.inspect value in
               Hashtbl.replace attrs name (String sv);
@@ -2692,7 +2632,6 @@ let run_spec_tests env test_files =
   let rec json_of_value = function
     | Nil -> `Null
     | Bool b -> `Bool b
-    | Integer n -> `Int n
     | Number n ->
       if Float.is_integer n && Float.abs n < 1e16
       then `Int (int_of_float n) else `Float n
@@ -2708,8 +2647,8 @@ let run_spec_tests env test_files =
   let rec value_of_json = function
     | `Null -> Nil
     | `Bool b -> Bool b
-    | `Int i -> Integer i
-    | `Intlit s -> (try Integer (int_of_string s) with _ -> try Number (float_of_string s) with _ -> String s)
+    | `Int i -> Number (float_of_int i)
+    | `Intlit s -> (try Number (float_of_string s) with _ -> String s)
     | `Float f -> Number f
     | `String s -> String s
     | `List xs -> List (List.map value_of_json xs)
@@ -2872,7 +2811,6 @@ let run_spec_tests env test_files =
       match sx_vm_execute with
       | Some fn -> Sx_ref.cek_call fn (List args)
       | None -> Nil)));
-  load_module "stdlib.sx" spec_dir;   (* pure SX stdlib: format etc. *)
   load_module "signals.sx" spec_dir;  (* core reactive primitives *)
   load_module "signals.sx" web_dir;   (* web extensions *)
   load_module "freeze.sx" lib_dir;

hosts/ocaml/bin/sx_server.ml

@@ -296,10 +296,6 @@ let read_blob () =
       (* consume trailing newline *)
       (try ignore (input_line stdin) with End_of_file -> ());
       data
-    | [List [Symbol "blob"; Integer n]] ->
-      let data = read_exact_bytes n in
-      (try ignore (input_line stdin) with End_of_file -> ());
-      data
     | _ -> raise (Eval_error ("read_blob: expected (blob N), got: " ^ line))
 
 (** Batch IO mode — collect requests during aser-slot, resolve after. *)
@@ -361,11 +357,6 @@ let rec read_io_response () =
     | [List (Symbol "io-response" :: Number n :: values)]
       when int_of_float n = !current_epoch ->
       (match values with [v] -> v | _ -> List values)
-    | [List [Symbol "io-response"; Integer n; value]]
-      when n = !current_epoch -> value
-    | [List (Symbol "io-response" :: Integer n :: values)]
-      when n = !current_epoch ->
-      (match values with [v] -> v | _ -> List values)
     (* Legacy untagged: (io-response value) — accept for backwards compat *)
     | [List [Symbol "io-response"; value]] -> value
     | [List (Symbol "io-response" :: values)] ->
@@ -405,12 +396,6 @@ let read_batched_io_response () =
         when int_of_float n = !current_epoch -> s
       | [List [Symbol "io-response"; Number n; v]]
         when int_of_float n = !current_epoch -> serialize_value v
-      | [List [Symbol "io-response"; Integer n; String s]]
-        when n = !current_epoch -> s
-      | [List [Symbol "io-response"; Integer n; SxExpr s]]
-        when n = !current_epoch -> s
-      | [List [Symbol "io-response"; Integer n; v]]
-        when n = !current_epoch -> serialize_value v
       (* Legacy untagged *)
       | [List [Symbol "io-response"; String s]]
       | [List [Symbol "io-response"; SxExpr s]] -> s
@@ -974,7 +959,6 @@ let setup_io_bridges env =
   bind "sleep" (fun args -> io_request "sleep" args);
   bind "set-response-status" (fun args -> match args with
     | [Number n] -> _pending_response_status := int_of_float n; Nil
-    | [Integer n] -> _pending_response_status := n; Nil
     | _ -> Nil);
   bind "set-response-header" (fun args -> io_request "set-response-header" args)
 
@@ -1377,7 +1361,6 @@ let rec dispatch env cmd =
         | Bool true -> "true"
         | Bool false -> "false"
         | Number n -> Sx_types.format_number n
-        | Integer n -> string_of_int n
         | String s -> "\"" ^ escape_sx_string s ^ "\""
         | Symbol s -> s
         | Keyword k -> ":" ^ k
@@ -1391,10 +1374,6 @@ let rec dispatch env cmd =
         | Island i -> "~" ^ i.i_name
         | SxExpr s -> s
         | RawHTML s -> "\"" ^ escape_sx_string s ^ "\""
-        | Char n -> Sx_types.inspect (Char n)
-        | Eof -> Sx_types.inspect Eof
-        | Port _ -> Sx_types.inspect result
-        | Rational (n, d) -> Printf.sprintf "%d/%d" n d
         | _ -> "nil"
       in
       send_ok_raw (raw_serialize result)
@@ -4471,8 +4450,6 @@ let site_mode () =
           match exprs with
           | [List [Symbol "epoch"; Number n]] ->
             current_epoch := int_of_float n
-          | [List [Symbol "epoch"; Integer n]] ->
-            current_epoch := n
           (* render-page: full SSR pipeline — URL → complete HTML *)
           | [List [Symbol "render-page"; String path]] ->
             (try match http_render_page env path [] with
@@ -4530,8 +4507,6 @@ let () =
             (* Epoch marker: (epoch N) — set current epoch, read next command *)
             | [List [Symbol "epoch"; Number n]] ->
               current_epoch := int_of_float n
-            | [List [Symbol "epoch"; Integer n]] ->
-              current_epoch := n
             | [cmd] -> dispatch env cmd
             | _ -> send_error ("Expected single command, got " ^ string_of_int (List.length exprs))
           end

hosts/ocaml/bootstrap.py

@@ -47,9 +47,7 @@ open Sx_runtime
 let trampoline_fn : (value -> value) ref = ref (fun v -> v)
 let trampoline v = !trampoline_fn v
 
-(* Step limit for timeout detection — set to 0 to disable *)
-let step_limit : int ref = ref 0
-let step_count : int ref = ref 0
+
 
 (* === Mutable globals — backing refs for transpiler's !_ref / _ref := === *)
 let _strict_ref = ref (Bool false)
@@ -128,90 +126,6 @@ let enhance_error_with_trace msg =
   _last_error_kont_ref := Nil;
   msg ^ (format_comp_trace trace)
 
-(* Hand-written sf_define_type — skipped from transpile because the spec uses
-   &rest params and empty-dict literals that the transpiler can't emit cleanly.
-   Implements: (define-type Name (Ctor1 f1 f2) (Ctor2 f3) ...)
-   Creates constructor fns, Name?/Ctor? predicates, Ctor-field accessors,
-   and records ctors in *adt-registry*. *)
-let sf_define_type args env_val =
-  let items = (match args with List l -> l | _ -> []) in
-  let type_sym = List.nth items 0 in
-  let type_name = value_to_string type_sym in
-  let ctor_specs = List.tl items in
-  let env_has_v k = sx_truthy (env_has env_val (String k)) in
-  let env_bind_v k v = ignore (env_bind env_val (String k) v) in
-  let env_get_v k = env_get env_val (String k) in
-  if not (env_has_v "*adt-registry*") then
-    env_bind_v "*adt-registry*" (Dict (Hashtbl.create 8));
-  let registry = env_get_v "*adt-registry*" in
-  let ctor_names = List.map (fun spec ->
-    (match spec with List (sym :: _) -> String (value_to_string sym) | _ -> Nil)
-  ) ctor_specs in
-  (match registry with Dict d -> Hashtbl.replace d type_name (List ctor_names) | _ -> ());
-  env_bind_v (type_name ^ "?")
-    (NativeFn (type_name ^ "?", fun pargs ->
-      (match pargs with
-      | [v] ->
-        (match v with
-        | Dict d -> Bool (Hashtbl.mem d "_adt" &&
-          (match Hashtbl.find_opt d "_type" with Some (String t) -> t = type_name | _ -> false))
-        | _ -> Bool false)
-      | _ -> Bool false)));
-  List.iter (fun spec ->
-    (match spec with
-    | List (sym :: fields) ->
-      let cn = value_to_string sym in
-      let field_names = List.map value_to_string fields in
-      let arity = List.length fields in
-      env_bind_v cn
-        (NativeFn (cn, fun ctor_args ->
-          if List.length ctor_args <> arity then
-            raise (Eval_error (Printf.sprintf "%s: expected %d args, got %d"
-              cn arity (List.length ctor_args)))
-          else begin
-            let d = Hashtbl.create 4 in
-            Hashtbl.replace d "_adt"    (Bool true);
-            Hashtbl.replace d "_type"   (String type_name);
-            Hashtbl.replace d "_ctor"   (String cn);
-            Hashtbl.replace d "_fields" (List ctor_args);
-            Dict d
-          end));
-      env_bind_v (cn ^ "?")
-        (NativeFn (cn ^ "?", fun pargs ->
-          (match pargs with
-          | [v] ->
-            (match v with
-            | Dict d -> Bool (Hashtbl.mem d "_adt" &&
-              (match Hashtbl.find_opt d "_ctor" with Some (String c) -> c = cn | _ -> false))
-            | _ -> Bool false)
-          | _ -> Bool false)));
-      List.iteri (fun idx fname ->
-        env_bind_v (cn ^ "-" ^ fname)
-          (NativeFn (cn ^ "-" ^ fname, fun pargs ->
-            (match pargs with
-            | [v] ->
-              (match v with
-              | Dict d ->
-                (match Hashtbl.find_opt d "_fields" with
-                | Some (List fs) ->
-                  if idx < List.length fs then List.nth fs idx
-                  else raise (Eval_error (cn ^ "-" ^ fname ^ ": index out of bounds"))
-                | _ -> raise (Eval_error (cn ^ "-" ^ fname ^ ": not an ADT")))
-              | _ -> raise (Eval_error (cn ^ "-" ^ fname ^ ": not a dict")))
-            | _ -> raise (Eval_error (cn ^ "-" ^ fname ^ ": expected 1 arg")))))
-      ) field_names
-    | _ -> ())
-  ) ctor_specs;
-  Nil
-
-(* Register define-type via custom_special_forms so the CEK dispatch finds it.
-   The top-level (register-special-form! ...) in spec/evaluator.sx is not a
-   define and therefore is not transpiled; we wire it up here instead. *)
-let () = ignore (register_special_form (String "define-type")
-  (NativeFn ("define-type", fun call_args ->
-    match call_args with
-    | [args; env] -> sf_define_type args env
-    | _ -> Nil)))
 
 
 """
@@ -257,10 +171,7 @@ def compile_spec_to_ml(spec_dir: str | None = None) -> str:
                 "debug-log", "debug_log", "range", "chunk-every", "zip-pairs",
                 "string-contains?", "starts-with?", "ends-with?",
                 "string-replace", "trim", "split", "index-of",
-                "pad-left", "pad-right", "char-at", "substring",
-                # sf-define-type uses &rest + empty-dict literals that the transpiler
-                # can't emit as valid OCaml; hand-written implementation in FIXUPS.
-                "sf-define-type"}
+                "pad-left", "pad-right", "char-at", "substring"}
         defines = [(n, e) for n, e in defines if n not in skip]
 
         # Deduplicate — keep last definition for each name (CEK overrides tree-walk)

hosts/ocaml/lib/sx_parser.ml

@@ -89,38 +89,10 @@ let read_symbol s =
   while s.pos < s.len && is_symbol_char s.src.[s.pos] do advance s done;
   String.sub s.src start (s.pos - start)
 
-let gcd a b =
-  let rec g a b = if b = 0 then a else g b (a mod b) in g (abs a) (abs b)
-
-let make_rat n d =
-  if d = 0 then raise (Parse_error "rational: division by zero");
-  let sign = if d < 0 then -1 else 1 in
-  let g = gcd (abs n) (abs d) in
-  let rn = sign * n / g and rd = sign * d / g in
-  if rd = 1 then Integer rn else Rational (rn, rd)
-
 let try_number str =
-  (* Integers (no '.' or 'e'/'E') → exact Integer; rationals N/D; floats → inexact Number *)
-  let has_dec = String.contains str '.' in
-  let has_exp = String.contains str 'e' || String.contains str 'E' in
-  if has_dec || has_exp then
-    match float_of_string_opt str with
-    | Some n -> Some (Number n)
-    | None -> None
-  else
-    match String.split_on_char '/' str with
-    | [num_s; den_s] when num_s <> "" && den_s <> "" ->
-      (match int_of_string_opt num_s, int_of_string_opt den_s with
-       | Some n, Some d -> (try Some (make_rat n d) with _ -> None)
-       | _ -> None)
-    | _ ->
-      match int_of_string_opt str with
-      | Some n -> Some (Integer n)
-      | None ->
-        (* handles "nan", "inf", "-inf" *)
-        match float_of_string_opt str with
-        | Some n -> Some (Number n)
-        | None -> None
+  match float_of_string_opt str with
+  | Some n -> Some (Number n)
+  | None -> None
 
 let rec read_value s : value =
   skip_whitespace_and_comments s;
@@ -136,34 +108,6 @@ let rec read_value s : value =
   | '"' -> String (read_string s)
   | '\'' -> advance s; List [Symbol "quote"; read_value s]
   | '`' -> advance s; List [Symbol "quasiquote"; read_value s]
-  | '#' when s.pos + 1 < s.len && s.src.[s.pos + 1] = '\\' ->
-    (* Character literal: #\a, #\space, #\newline, etc. *)
-    advance s; advance s;
-    if at_end s then raise (Parse_error "Unexpected end of input after #\\");
-    let char_start = s.pos in
-    (* Read a name if starts with ident char, else single char *)
-    if is_ident_start s.src.[s.pos] then begin
-      while s.pos < s.len && is_ident_char s.src.[s.pos] do advance s done;
-      let name = String.sub s.src char_start (s.pos - char_start) in
-      let cp = match name with
-        | "space" -> 32 | "newline" -> 10 | "tab" -> 9
-        | "return" -> 13 | "nul" -> 0 | "null" -> 0
-        | "escape" -> 27 | "delete" -> 127 | "backspace" -> 8
-        | "altmode" -> 27 | "rubout" -> 127
-        | _ -> Char.code name.[0]  (* single letter like #\a *)
-      in Char cp
-    end else begin
-      let c = s.src.[s.pos] in
-      advance s;
-      Char (Char.code c)
-    end
-  | '#' when s.pos + 1 < s.len &&
-             (s.src.[s.pos + 1] = 't' || s.src.[s.pos + 1] = 'f') &&
-             (s.pos + 2 >= s.len || not (is_ident_char s.src.[s.pos + 2])) ->
-    (* #t / #f — boolean literals (R7RS shorthand) *)
-    let b = s.src.[s.pos + 1] = 't' in
-    advance s; advance s;
-    Bool b
   | '#' when s.pos + 1 < s.len && s.src.[s.pos + 1] = ';' ->
     (* Datum comment: #; discards next expression *)
     advance s; advance s;

hosts/ocaml/lib/sx_runtime.ml

@@ -46,7 +46,7 @@ let sx_call f args =
     !Sx_types._cek_eval_lambda_ref f args
   | Continuation (k, _) ->
     k (match args with x :: _ -> x | [] -> Nil)
-  | CallccContinuation (_, _) ->
+  | CallccContinuation _ ->
     raise (Eval_error "callcc continuations must be invoked through the CEK machine")
   | _ ->
     let nargs = List.length args in
@@ -156,9 +156,6 @@ let get_val container key =
      | "extra" -> f.cf_extra | "extra2" -> f.cf_extra2
      | "subscribers" -> f.cf_results
      | "prev-tracking" -> f.cf_extra
-     | "after-thunk" -> f.cf_f        (* wind-after frame *)
-     | "winders-len" -> f.cf_extra    (* wind-after frame *)
-     | "body-result" -> f.cf_name     (* wind-return frame *)
      | _ -> Nil)
   | VmFrame f, String k ->
     (match k with
@@ -211,8 +208,6 @@ let get_val container key =
   | Dict d, Keyword k -> dict_get d k
   | (List l | ListRef { contents = l }), Number n ->
     (try List.nth l (int_of_float n) with _ -> Nil)
-  | (List l | ListRef { contents = l }), Integer n ->
-    (try List.nth l n with _ -> Nil)
   | Nil, _ -> Nil  (* nil.anything → nil *)
   | _, _ -> Nil    (* type mismatch → nil (matches JS/Python behavior) *)
 
@@ -386,20 +381,15 @@ let continuation_data v = match v with
   | _ -> raise (Eval_error "not a continuation")
 
 (* Callcc (undelimited) continuation support *)
-let callcc_continuation_p v = match v with CallccContinuation (_, _) -> Bool true | _ -> Bool false
+let callcc_continuation_p v = match v with CallccContinuation _ -> Bool true | _ -> Bool false
 
-let make_callcc_continuation captured winders_len =
-  let n = match winders_len with Number f -> int_of_float f | Integer n -> n | _ -> 0 in
-  CallccContinuation (sx_to_list captured, n)
+let make_callcc_continuation captured =
+  CallccContinuation (sx_to_list captured)
 
 let callcc_continuation_data v = match v with
-  | CallccContinuation (frames, _) -> List frames
+  | CallccContinuation frames -> List frames
   | _ -> raise (Eval_error "not a callcc continuation")
 
-let callcc_continuation_winders_len v = match v with
-  | CallccContinuation (_, n) -> Number (float_of_int n)
-  | _ -> Number 0.0
-
 (* Dynamic wind — simplified for OCaml (no async) *)
 let host_error msg =
   raise (Eval_error (value_to_str msg))

hosts/ocaml/lib/sx_types.ml

@@ -43,10 +43,9 @@ type env = {
 
 and value =
   | Nil
-  | Bool    of bool
-  | Integer of int    (** Exact integer — distinct from inexact float. *)
-  | Number  of float  (** Inexact float. *)
-  | String  of string
+  | Bool   of bool
+  | Number of float
+  | String of string
   | Symbol of string
   | Keyword of string
   | List   of value list
@@ -57,7 +56,7 @@ and value =
   | Macro  of macro
   | Thunk  of value * env
   | Continuation of (value -> value) * dict option
-  | CallccContinuation of value list * int  (** Undelimited continuation — captured kont frames + winders depth at capture *)
+  | CallccContinuation of value list  (** Undelimited continuation — captured kont frames *)
   | NativeFn of string * (value list -> value)
   | Signal of signal
   | RawHTML of string
@@ -73,25 +72,6 @@ and value =
   | Record of record  (** R7RS record — opaque, generative, field-indexed. *)
   | Parameter of parameter  (** R7RS parameter — dynamic binding via kont-stack provide frames. *)
   | Vector of value array  (** R7RS vector — mutable fixed-size array. *)
-  | StringBuffer of Buffer.t  (** Mutable string buffer — O(1) amortized append. *)
-  | HashTable of (value, value) Hashtbl.t  (** Mutable hash table with arbitrary keys. *)
-  | Char of int  (** Unicode codepoint — R7RS char type. *)
-  | Eof            (** EOF sentinel — returned by read-char etc. at end of input. *)
-  | Port of sx_port  (** String port — input (string cursor) or output (buffer). *)
-  | Rational of int * int  (** Exact rational: numerator, denominator (reduced, denom>0). *)
-  | SxSet of (string, value) Hashtbl.t  (** Mutable set keyed by inspect(value). *)
-  | SxRegexp of string * string * Re.re  (** Regexp: source, flags, compiled. *)
-  | SxBytevector of bytes  (** Mutable bytevector — R7RS bytevector type. *)
-
-(** String input port: source string + mutable cursor position. *)
-and sx_port_kind =
-  | PortInput of string * int ref
-  | PortOutput of Buffer.t
-
-and sx_port = {
-  mutable sp_closed : bool;
-  sp_kind : sx_port_kind;
-}
 
 (** CEK machine state — record instead of Dict for performance.
     5 fields × 55K steps/sec = 275K Hashtbl allocations/sec eliminated. *)
@@ -412,7 +392,6 @@ let format_number n =
 
 let value_to_string = function
   | String s -> s | Symbol s -> s | Keyword k -> k
-  | Integer n -> string_of_int n
   | Number n -> format_number n
   | Bool true -> "true" | Bool false -> "false"
   | Nil -> "" | _ -> "<value>"
@@ -482,7 +461,6 @@ let make_keyword name = Keyword (value_to_string name)
 let type_of = function
   | Nil            -> "nil"
   | Bool _         -> "boolean"
-  | Integer _      -> "number"
   | Number _       -> "number"
   | String _       -> "string"
   | Symbol _       -> "symbol"
@@ -495,7 +473,7 @@ let type_of = function
   | Macro _        -> "macro"
   | Thunk _        -> "thunk"
   | Continuation (_, _) -> "continuation"
-  | CallccContinuation (_, _) -> "continuation"
+  | CallccContinuation _ -> "continuation"
   | NativeFn _     -> "function"
   | Signal _       -> "signal"
   | RawHTML _      -> "raw-html"
@@ -510,16 +488,6 @@ let type_of = function
   | Record r       -> r.r_type.rt_name
   | Parameter _    -> "parameter"
   | Vector _       -> "vector"
-  | StringBuffer _ -> "string-buffer"
-  | HashTable _    -> "hash-table"
-  | Char _         -> "char"
-  | Eof            -> "eof-object"
-  | Port { sp_kind = PortInput _; _ }  -> "input-port"
-  | Port { sp_kind = PortOutput _; _ } -> "output-port"
-  | Rational _  -> "rational"
-  | SxSet _          -> "set"
-  | SxRegexp _       -> "regexp"
-  | SxBytevector _   -> "bytevector"
 
 let is_nil = function Nil -> true | _ -> false
 let is_lambda = function Lambda _ -> true | _ -> false
@@ -535,7 +503,7 @@ let is_signal = function
 let is_record = function Record _ -> true | _ -> false
 
 let is_callable = function
-  | Lambda _ | NativeFn _ | Continuation (_, _) | CallccContinuation (_, _) | VmClosure _ -> true
+  | Lambda _ | NativeFn _ | Continuation (_, _) | CallccContinuation _ | VmClosure _ -> true
   | _ -> false
 
 
@@ -648,7 +616,6 @@ let thunk_env = function
 (** {1 Record operations} *)
 
 let val_to_int = function
-  | Integer n -> n
   | Number n -> int_of_float n
   | v -> raise (Eval_error ("Expected number, got " ^ type_of v))
 
@@ -810,7 +777,6 @@ let rec inspect = function
   | Nil -> "nil"
   | Bool true -> "true"
   | Bool false -> "false"
-  | Integer n -> string_of_int n
   | Number n -> format_number n
   | String s ->
     let buf = Buffer.create (String.length s + 2) in
@@ -844,7 +810,7 @@ let rec inspect = function
     Printf.sprintf "<%s(%s)>" tag (String.concat ", " m.m_params)
   | Thunk _ -> "<thunk>"
   | Continuation (_, _) -> "<continuation>"
-  | CallccContinuation (_, _) -> "<callcc-continuation>"
+  | CallccContinuation _ -> "<callcc-continuation>"
   | NativeFn (name, _) -> Printf.sprintf "<native:%s>" name
   | Signal _ -> "<signal>"
   | RawHTML s -> Printf.sprintf "\"<raw-html:%d>\"" (String.length s)
@@ -865,23 +831,3 @@ let rec inspect = function
     Printf.sprintf "#(%s)" (String.concat " " elts)
   | VmFrame f -> Printf.sprintf "<vm-frame:ip=%d base=%d>" f.vf_ip f.vf_base
   | VmMachine m -> Printf.sprintf "<vm-machine:sp=%d frames=%d>" m.vm_sp (List.length m.vm_frames)
-  | StringBuffer buf -> Printf.sprintf "<string-buffer:%d>" (Buffer.length buf)
-  | HashTable ht -> Printf.sprintf "<hash-table:%d>" (Hashtbl.length ht)
-  | Char n ->
-    let name = match n with
-      | 32 -> "space" | 10 -> "newline" | 9 -> "tab"
-      | 13 -> "return" | 0 -> "nul" | 27 -> "escape"
-      | 127 -> "delete" | 8 -> "backspace"
-      | _ -> let buf = Buffer.create 1 in
-             Buffer.add_utf_8_uchar buf (Uchar.of_int n);
-             Buffer.contents buf
-    in "#\\" ^ name
-  | Eof -> "#!eof"
-  | Port { sp_kind = PortInput (_, pos); sp_closed } ->
-    Printf.sprintf "<input-port:pos=%d%s>" !pos (if sp_closed then ":closed" else "")
-  | Port { sp_kind = PortOutput buf; sp_closed } ->
-    Printf.sprintf "<output-port:len=%d%s>" (Buffer.length buf) (if sp_closed then ":closed" else "")
-  | Rational (n, d) -> Printf.sprintf "%d/%d" n d
-  | SxSet ht -> Printf.sprintf "<set:%d>" (Hashtbl.length ht)
-  | SxRegexp (src, flags, _) -> Printf.sprintf "#/%s/%s" src flags
-  | SxBytevector b -> Printf.sprintf "#u8(%s)" (String.concat " " (List.init (Bytes.length b) (fun i -> string_of_int (Char.code (Bytes.get b i)))))

hosts/ocaml/lib/sx_vm.ml

@@ -185,8 +185,7 @@ let code_from_value v =
       | Some _ as r -> r | None -> Hashtbl.find_opt d k2 in
     let bc_list = match find2 "bytecode" "vc-bytecode" with
       | Some (List l | ListRef { contents = l }) ->
-        Array.of_list (List.map (fun x -> match x with
-          | Integer n -> n | Number n -> int_of_float n | _ -> 0) l)
+        Array.of_list (List.map (fun x -> match x with Number n -> int_of_float n | _ -> 0) l)
       | _ -> [||]
     in
     let entries = match find2 "constants" "vc-constants" with
@@ -199,10 +198,10 @@ let code_from_value v =
       | _ -> entry
     ) entries in
     let arity = match find2 "arity" "vc-arity" with
-      | Some (Integer n) -> n | Some (Number n) -> int_of_float n | _ -> 0
+      | Some (Number n) -> int_of_float n | _ -> 0
     in
     let rest_arity = match find2 "rest-arity" "vc-rest-arity" with
-      | Some (Integer n) -> n | Some (Number n) -> int_of_float n | _ -> -1
+      | Some (Number n) -> int_of_float n | _ -> -1
     in
     (* Compute locals from bytecode: scan for highest LOCAL_GET/LOCAL_SET slot.
        The compiler's arity may undercount when nested lets add many locals. *)
@@ -750,7 +749,10 @@ and run vm =
             | _ -> (Hashtbl.find Sx_primitives.primitives "/") [a; b])
         | 164 (* OP_EQ *) ->
           let b = pop vm and a = pop vm in
-          push vm ((Hashtbl.find Sx_primitives.primitives "=") [a; b])
+          let rec norm = function
+            | ListRef { contents = l } -> List (List.map norm l)
+            | List l -> List (List.map norm l) | v -> v in
+          push vm (Bool (norm a = norm b))
         | 165 (* OP_LT *) ->
           let b = pop vm and a = pop vm in
           push vm (match a, b with
@@ -769,10 +771,10 @@ and run vm =
         | 168 (* OP_LEN *) ->
           let v = pop vm in
           push vm (match v with
-            | List l | ListRef { contents = l } -> Integer (List.length l)
-            | String s -> Integer (String.length s)
-            | Dict d -> Integer (Hashtbl.length d)
-            | Nil -> Integer 0
+            | List l | ListRef { contents = l } -> Number (float_of_int (List.length l))
+            | String s -> Number (float_of_int (String.length s))
+            | Dict d -> Number (float_of_int (Hashtbl.length d))
+            | Nil -> Number 0.0
             | _ -> (Hashtbl.find Sx_primitives.primitives "len") [v])
         | 169 (* OP_FIRST *) ->
           let v = pop vm in

hosts/ocaml/transpiler.sx

@@ -256,7 +256,6 @@
     "callcc-continuation?"
     "callcc-continuation-data"
     "make-callcc-continuation"
-    "callcc-continuation-winders-len"
     "dynamic-wind-call"
     "strip-prefix"
     "component-set-param-types!"
@@ -296,8 +295,7 @@
     "*bind-tracking*"
     "*provide-batch-depth*"
     "*provide-batch-queue*"
-    "*provide-subscribers*"
-    "*winders*"))
+    "*provide-subscribers*"))
 
 (define
   ml-is-mutable-global?
@@ -535,13 +533,13 @@
               "; cf_env = "
               (ef "env")
               "; cf_name = "
-              (if (= frame-type "if") (ef "else") (cond (some (fn (k) (= k "body-result")) items) (ef "body-result") :else (ef "name")))
+              (if (= frame-type "if") (ef "else") (ef "name"))
               "; cf_body = "
               (if (= frame-type "if") (ef "then") (ef "body"))
               "; cf_remaining = "
               (ef "remaining")
               "; cf_f = "
-              (cond (some (fn (k) (= k "after-thunk")) items) (ef "after-thunk") (some (fn (k) (= k "f")) items) (ef "f") :else "Nil")
+              (ef "f")
               "; cf_args = "
               (cond
                 (some (fn (k) (= k "evaled")) items)
@@ -584,8 +582,6 @@
                 (ef "prev-tracking")
                 (some (fn (k) (= k "extra")) items)
                 (ef "extra")
-                (some (fn (k) (= k "winders-len")) items)
-                (ef "winders-len")
                 :else "Nil")
               "; cf_extra2 = "
               (cond

lib/apl/runtime.sx

@@ -1,289 +0,0 @@
-;; lib/apl/runtime.sx — APL primitives on SX
-;;
-;; APL vectors are represented as SX lists (functional, immutable results).
-;; Operations are rank-polymorphic: scalar/vector arguments both accepted.
-;; Index origin: 1 (traditional APL).
-;;
-;; Primitives used:
-;;   map (multi-arg, Phase 1)
-;;   bitwise-and/or/xor/not/arithmetic-shift (Phase 7)
-;;   make-set/set-member?/set-add!/set->list (Phase 18)
-
-;; ---------------------------------------------------------------------------
-;; 1. Core vector constructors
-;; ---------------------------------------------------------------------------
-
-;; ⍳N — iota: generate integer vector 1, 2, ..., N
-(define
-  (apl-iota n)
-  (letrec
-    ((go (fn (i acc) (if (< i 1) acc (go (- i 1) (cons i acc))))))
-    (go n (list))))
-
-;; ⍴A — shape (length of a vector)
-(define (apl-rho v) (if (list? v) (len v) 1))
-
-;; A[I] — 1-indexed access
-(define (apl-at v i) (nth v (- i 1)))
-
-;; Scalar predicate
-(define (apl-scalar? v) (not (list? v)))
-
-;; ---------------------------------------------------------------------------
-;; 2. Rank-polymorphic helpers
-;;    dyadic: scalar/vector × scalar/vector → scalar/vector
-;;    monadic: scalar/vector → scalar/vector
-;; ---------------------------------------------------------------------------
-
-(define
-  (apl-dyadic op a b)
-  (cond
-    ((and (list? a) (list? b)) (map op a b))
-    ((list? a) (map (fn (x) (op x b)) a))
-    ((list? b) (map (fn (y) (op a y)) b))
-    (else (op a b))))
-
-(define (apl-monadic op a) (if (list? a) (map op a) (op a)))
-
-;; ---------------------------------------------------------------------------
-;; 3. Arithmetic (element-wise, rank-polymorphic)
-;; ---------------------------------------------------------------------------
-
-(define (apl-add a b) (apl-dyadic + a b))
-(define (apl-sub a b) (apl-dyadic - a b))
-(define (apl-mul a b) (apl-dyadic * a b))
-(define (apl-div a b) (apl-dyadic / a b))
-(define (apl-mod a b) (apl-dyadic modulo a b))
-(define (apl-pow a b) (apl-dyadic pow a b))
-(define (apl-max a b) (apl-dyadic (fn (x y) (if (> x y) x y)) a b))
-(define (apl-min a b) (apl-dyadic (fn (x y) (if (< x y) x y)) a b))
-
-(define (apl-neg a) (apl-monadic (fn (x) (- 0 x)) a))
-(define (apl-abs a) (apl-monadic abs a))
-(define (apl-floor a) (apl-monadic floor a))
-(define (apl-ceil a) (apl-monadic ceil a))
-(define (apl-sqrt a) (apl-monadic sqrt a))
-(define (apl-exp a) (apl-monadic exp a))
-(define (apl-log a) (apl-monadic log a))
-
-;; ---------------------------------------------------------------------------
-;; 4. Comparison (element-wise, returns 0/1 booleans)
-;; ---------------------------------------------------------------------------
-
-(define (apl-bool v) (if v 1 0))
-
-(define (apl-eq a b) (apl-dyadic (fn (x y) (apl-bool (= x y))) a b))
-(define
-  (apl-neq a b)
-  (apl-dyadic (fn (x y) (apl-bool (not (= x y)))) a b))
-(define (apl-lt a b) (apl-dyadic (fn (x y) (apl-bool (< x y))) a b))
-(define (apl-le a b) (apl-dyadic (fn (x y) (apl-bool (<= x y))) a b))
-(define (apl-gt a b) (apl-dyadic (fn (x y) (apl-bool (> x y))) a b))
-(define (apl-ge a b) (apl-dyadic (fn (x y) (apl-bool (>= x y))) a b))
-
-;; Boolean logic (0/1 vectors)
-(define
-  (apl-and a b)
-  (apl-dyadic
-    (fn
-      (x y)
-      (if
-        (and (not (= x 0)) (not (= y 0)))
-        1
-        0))
-    a
-    b))
-(define
-  (apl-or a b)
-  (apl-dyadic
-    (fn
-      (x y)
-      (if
-        (or (not (= x 0)) (not (= y 0)))
-        1
-        0))
-    a
-    b))
-(define
-  (apl-not a)
-  (apl-monadic (fn (x) (if (= x 0) 1 0)) a))
-
-;; ---------------------------------------------------------------------------
-;; 5. Bitwise operations (element-wise)
-;; ---------------------------------------------------------------------------
-
-(define (apl-bitand a b) (apl-dyadic bitwise-and a b))
-(define (apl-bitor a b) (apl-dyadic bitwise-or a b))
-(define (apl-bitxor a b) (apl-dyadic bitwise-xor a b))
-(define (apl-bitnot a) (apl-monadic bitwise-not a))
-(define
-  (apl-lshift a b)
-  (apl-dyadic (fn (x n) (arithmetic-shift x n)) a b))
-(define
-  (apl-rshift a b)
-  (apl-dyadic (fn (x n) (arithmetic-shift x (- 0 n))) a b))
-
-;; ---------------------------------------------------------------------------
-;; 6. Reduction (fold) and scan
-;; ---------------------------------------------------------------------------
-
-(define (apl-reduce-add v) (reduce + 0 v))
-(define (apl-reduce-mul v) (reduce * 1 v))
-(define
-  (apl-reduce-max v)
-  (reduce (fn (acc x) (if (> acc x) acc x)) (first v) (rest v)))
-(define
-  (apl-reduce-min v)
-  (reduce (fn (acc x) (if (< acc x) acc x)) (first v) (rest v)))
-(define
-  (apl-reduce-and v)
-  (reduce
-    (fn
-      (acc x)
-      (if
-        (and (not (= acc 0)) (not (= x 0)))
-        1
-        0))
-    1
-    v))
-(define
-  (apl-reduce-or v)
-  (reduce
-    (fn
-      (acc x)
-      (if
-        (or (not (= acc 0)) (not (= x 0)))
-        1
-        0))
-    0
-    v))
-
-;; Scan: prefix reduction (yields a vector of running totals)
-(define
-  (apl-scan op v)
-  (if
-    (= (len v) 0)
-    (list)
-    (letrec
-      ((go (fn (xs acc result) (if (= (len xs) 0) (reverse result) (let ((next (op acc (first xs)))) (go (rest xs) next (cons next result)))))))
-      (go (rest v) (first v) (list (first v))))))
-
-(define (apl-scan-add v) (apl-scan + v))
-(define (apl-scan-mul v) (apl-scan * v))
-
-;; ---------------------------------------------------------------------------
-;; 7. Vector manipulation
-;; ---------------------------------------------------------------------------
-
-;; ⌽A — reverse
-(define (apl-reverse v) (reverse v))
-
-;; A,B — catenate
-(define
-  (apl-cat a b)
-  (cond
-    ((and (list? a) (list? b)) (append a b))
-    ((list? a) (append a (list b)))
-    ((list? b) (cons a b))
-    (else (list a b))))
-
-;; ↑N A — take first N elements (negative: take last N)
-(define
-  (apl-take n v)
-  (if
-    (>= n 0)
-    (letrec
-      ((go (fn (xs i) (if (or (= i 0) (= (len xs) 0)) (list) (cons (first xs) (go (rest xs) (- i 1)))))))
-      (go v n))
-    (apl-reverse (apl-take (- 0 n) (apl-reverse v)))))
-
-;; ↓N A — drop first N elements
-(define
-  (apl-drop n v)
-  (if
-    (>= n 0)
-    (letrec
-      ((go (fn (xs i) (if (or (= i 0) (= (len xs) 0)) xs (go (rest xs) (- i 1))))))
-      (go v n))
-    (apl-reverse (apl-drop (- 0 n) (apl-reverse v)))))
-
-;; Rotate left by n positions
-(define
-  (apl-rotate n v)
-  (let ((m (modulo n (len v)))) (append (apl-drop m v) (apl-take m v))))
-
-;; Compression: A/B — select elements of B where A is 1
-(define
-  (apl-compress mask v)
-  (if
-    (= (len mask) 0)
-    (list)
-    (let
-      ((rest-result (apl-compress (rest mask) (rest v))))
-      (if
-        (not (= (first mask) 0))
-        (cons (first v) rest-result)
-        rest-result))))
-
-;; Indexing: A[B] — select elements at indices B (1-indexed)
-(define (apl-index v indices) (map (fn (i) (apl-at v i)) indices))
-
-;; Grade up: indices that would sort the vector ascending
-(define
-  (apl-grade-up v)
-  (let
-    ((indexed (map (fn (x i) (list x i)) v (apl-iota (len v)))))
-    (map (fn (p) (nth p 1)) (sort indexed))))
-
-;; ---------------------------------------------------------------------------
-;; 8. Set operations (∊ ∪ ∩ ~)
-;; ---------------------------------------------------------------------------
-
-;; Membership ∊: for each element in A, is it in B? → 0/1 vector
-(define
-  (apl-member a b)
-  (let
-    ((bset (let ((s (make-set))) (for-each (fn (x) (set-add! s x)) b) s)))
-    (if
-      (list? a)
-      (map (fn (x) (apl-bool (set-member? bset x))) a)
-      (apl-bool (set-member? bset a)))))
-
-;; Nub ∪A — unique elements, preserving order
-(define
-  (apl-nub v)
-  (let
-    ((seen (make-set)))
-    (letrec
-      ((go (fn (xs acc) (if (= (len xs) 0) (reverse acc) (if (set-member? seen (first xs)) (go (rest xs) acc) (begin (set-add! seen (first xs)) (go (rest xs) (cons (first xs) acc))))))))
-      (go v (list)))))
-
-;; Union A∪B — nub of concatenation
-(define (apl-union a b) (apl-nub (apl-cat a b)))
-
-;; Intersection A∩B
-(define
-  (apl-intersect a b)
-  (let
-    ((bset (let ((s (make-set))) (for-each (fn (x) (set-add! s x)) b) s)))
-    (filter (fn (x) (set-member? bset x)) a)))
-
-;; Without A~B
-(define
-  (apl-without a b)
-  (let
-    ((bset (let ((s (make-set))) (for-each (fn (x) (set-add! s x)) b) s)))
-    (filter (fn (x) (not (set-member? bset x))) a)))
-
-;; ---------------------------------------------------------------------------
-;; 9. Format (⍕) — APL-style display
-;; ---------------------------------------------------------------------------
-
-(define
-  (apl-format v)
-  (if
-    (list? v)
-    (letrec
-      ((go (fn (xs acc) (if (= (len xs) 0) acc (go (rest xs) (str acc (if (= acc "") "" " ") (str (first xs))))))))
-      (go v ""))
-    (str v)))

lib/apl/test.sh

@@ -1,51 +0,0 @@
-#!/usr/bin/env bash
-# lib/apl/test.sh — smoke-test the APL runtime layer.
-
-set -uo pipefail
-cd "$(git rev-parse --show-toplevel)"
-
-SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
-if [ ! -x "$SX_SERVER" ]; then
-  SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
-fi
-if [ ! -x "$SX_SERVER" ]; then
-  echo "ERROR: sx_server.exe not found."
-  exit 1
-fi
-
-TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
-
-cat > "$TMPFILE" << 'EPOCHS'
-(epoch 1)
-(load "spec/stdlib.sx")
-(load "lib/apl/runtime.sx")
-(epoch 2)
-(load "lib/apl/tests/runtime.sx")
-(epoch 3)
-(eval "(list apl-test-pass apl-test-fail)")
-EPOCHS
-
-OUTPUT=$(timeout 60 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
-
-LINE=$(echo "$OUTPUT" | awk '/^\(ok-len 3 / {getline; print; exit}')
-if [ -z "$LINE" ]; then
-  LINE=$(echo "$OUTPUT" | grep -E '^\(ok 3 \([0-9]+ [0-9]+\)\)' | tail -1 \
-          | sed -E 's/^\(ok 3 //; s/\)$//')
-fi
-if [ -z "$LINE" ]; then
-  echo "ERROR: could not extract summary"
-  echo "$OUTPUT" | tail -10
-  exit 1
-fi
-
-P=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\1/')
-F=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\2/')
-TOTAL=$((P + F))
-
-if [ "$F" -eq 0 ]; then
-  echo "ok $P/$TOTAL lib/apl tests passed"
-else
-  echo "FAIL $P/$TOTAL passed, $F failed"
-fi
-
-[ "$F" -eq 0 ]

lib/apl/tests/runtime.sx

@@ -1,327 +0,0 @@
-;; lib/apl/tests/runtime.sx — Tests for lib/apl/runtime.sx
-
-;; --- Test framework ---
-(define apl-test-pass 0)
-(define apl-test-fail 0)
-(define apl-test-fails (list))
-
-(define
-  (apl-test name got expected)
-  (if
-    (= got expected)
-    (set! apl-test-pass (+ apl-test-pass 1))
-    (begin
-      (set! apl-test-fail (+ apl-test-fail 1))
-      (set! apl-test-fails (append apl-test-fails (list {:got got :expected expected :name name}))))))
-
-;; ---------------------------------------------------------------------------
-;; 1. Core vector constructors
-;; ---------------------------------------------------------------------------
-
-(apl-test
-  "iota 5"
-  (apl-iota 5)
-  (list 1 2 3 4 5))
-(apl-test "iota 1" (apl-iota 1) (list 1))
-(apl-test "iota 0" (apl-iota 0) (list))
-(apl-test
-  "rho list"
-  (apl-rho (list 1 2 3))
-  3)
-(apl-test "rho scalar" (apl-rho 42) 1)
-(apl-test
-  "at 1"
-  (apl-at (list 10 20 30) 1)
-  10)
-(apl-test
-  "at 3"
-  (apl-at (list 10 20 30) 3)
-  30)
-
-;; ---------------------------------------------------------------------------
-;; 2. Arithmetic — element-wise and rank-polymorphic
-;; ---------------------------------------------------------------------------
-
-(apl-test
-  "add v+v"
-  (apl-add
-    (list 1 2 3)
-    (list 10 20 30))
-  (list 11 22 33))
-(apl-test
-  "add s+v"
-  (apl-add 10 (list 1 2 3))
-  (list 11 12 13))
-(apl-test
-  "add v+s"
-  (apl-add (list 1 2 3) 100)
-  (list 101 102 103))
-(apl-test "add s+s" (apl-add 3 4) 7)
-(apl-test
-  "sub v-v"
-  (apl-sub
-    (list 5 4 3)
-    (list 1 2 3))
-  (list 4 2 0))
-(apl-test
-  "mul v*s"
-  (apl-mul (list 1 2 3) 3)
-  (list 3 6 9))
-(apl-test
-  "neg -v"
-  (apl-neg (list 1 -2 3))
-  (list -1 2 -3))
-(apl-test
-  "abs v"
-  (apl-abs (list -1 2 -3))
-  (list 1 2 3))
-(apl-test
-  "floor v"
-  (apl-floor (list 1.7 2.2 3.9))
-  (list 1 2 3))
-(apl-test
-  "ceil v"
-  (apl-ceil (list 1.1 2.5 3))
-  (list 2 3 3))
-(apl-test
-  "max v v"
-  (apl-max
-    (list 1 5 3)
-    (list 4 2 6))
-  (list 4 5 6))
-(apl-test
-  "min v v"
-  (apl-min
-    (list 1 5 3)
-    (list 4 2 6))
-  (list 1 2 3))
-
-;; ---------------------------------------------------------------------------
-;; 3. Comparison (returns 0/1)
-;; ---------------------------------------------------------------------------
-
-(apl-test "eq 3 3" (apl-eq 3 3) 1)
-(apl-test "eq 3 4" (apl-eq 3 4) 0)
-(apl-test
-  "gt v>s"
-  (apl-gt (list 1 5 3 7) 4)
-  (list 0 1 0 1))
-(apl-test
-  "lt v<v"
-  (apl-lt
-    (list 1 2 3)
-    (list 3 2 1))
-  (list 1 0 0))
-(apl-test
-  "le v<=s"
-  (apl-le (list 3 4 5) 4)
-  (list 1 1 0))
-(apl-test
-  "ge v>=s"
-  (apl-ge (list 3 4 5) 4)
-  (list 0 1 1))
-(apl-test
-  "neq v!=s"
-  (apl-neq (list 1 2 3) 2)
-  (list 1 0 1))
-
-;; ---------------------------------------------------------------------------
-;; 4. Boolean logic (0/1 values)
-;; ---------------------------------------------------------------------------
-
-(apl-test "and 1 1" (apl-and 1 1) 1)
-(apl-test "and 1 0" (apl-and 1 0) 0)
-(apl-test "or 0 1" (apl-or 0 1) 1)
-(apl-test "or 0 0" (apl-or 0 0) 0)
-(apl-test "not 0" (apl-not 0) 1)
-(apl-test "not 1" (apl-not 1) 0)
-(apl-test
-  "not vec"
-  (apl-not (list 1 0 1 0))
-  (list 0 1 0 1))
-
-;; ---------------------------------------------------------------------------
-;; 5. Bitwise operations
-;; ---------------------------------------------------------------------------
-
-(apl-test "bitand s" (apl-bitand 5 3) 1)
-(apl-test "bitor s" (apl-bitor 5 3) 7)
-(apl-test "bitxor s" (apl-bitxor 5 3) 6)
-(apl-test "bitnot 0" (apl-bitnot 0) -1)
-(apl-test "lshift 1 4" (apl-lshift 1 4) 16)
-(apl-test "rshift 16 2" (apl-rshift 16 2) 4)
-(apl-test
-  "bitand vec"
-  (apl-bitand (list 5 6) (list 3 7))
-  (list 1 6))
-(apl-test
-  "bitor vec"
-  (apl-bitor (list 5 6) (list 3 7))
-  (list 7 7))
-
-;; ---------------------------------------------------------------------------
-;; 6. Reduction and scan
-;; ---------------------------------------------------------------------------
-
-(apl-test
-  "reduce-add"
-  (apl-reduce-add
-    (list 1 2 3 4 5))
-  15)
-(apl-test
-  "reduce-mul"
-  (apl-reduce-mul (list 1 2 3 4))
-  24)
-(apl-test
-  "reduce-max"
-  (apl-reduce-max
-    (list 3 1 4 1 5))
-  5)
-(apl-test
-  "reduce-min"
-  (apl-reduce-min
-    (list 3 1 4 1 5))
-  1)
-(apl-test
-  "reduce-and"
-  (apl-reduce-and (list 1 1 1))
-  1)
-(apl-test
-  "reduce-and0"
-  (apl-reduce-and (list 1 0 1))
-  0)
-(apl-test
-  "reduce-or"
-  (apl-reduce-or (list 0 1 0))
-  1)
-(apl-test
-  "scan-add"
-  (apl-scan-add (list 1 2 3 4))
-  (list 1 3 6 10))
-(apl-test
-  "scan-mul"
-  (apl-scan-mul (list 1 2 3 4))
-  (list 1 2 6 24))
-
-;; ---------------------------------------------------------------------------
-;; 7. Vector manipulation
-;; ---------------------------------------------------------------------------
-
-(apl-test
-  "reverse"
-  (apl-reverse (list 1 2 3 4))
-  (list 4 3 2 1))
-(apl-test
-  "cat v v"
-  (apl-cat (list 1 2) (list 3 4))
-  (list 1 2 3 4))
-(apl-test
-  "cat v s"
-  (apl-cat (list 1 2) 3)
-  (list 1 2 3))
-(apl-test
-  "cat s v"
-  (apl-cat 1 (list 2 3))
-  (list 1 2 3))
-(apl-test
-  "cat s s"
-  (apl-cat 1 2)
-  (list 1 2))
-(apl-test
-  "take 3"
-  (apl-take
-    3
-    (list 10 20 30 40 50))
-  (list 10 20 30))
-(apl-test
-  "take 0"
-  (apl-take 0 (list 1 2 3))
-  (list))
-(apl-test
-  "take neg"
-  (apl-take -2 (list 10 20 30))
-  (list 20 30))
-(apl-test
-  "drop 2"
-  (apl-drop 2 (list 10 20 30 40))
-  (list 30 40))
-(apl-test
-  "drop neg"
-  (apl-drop -1 (list 10 20 30))
-  (list 10 20))
-(apl-test
-  "rotate 2"
-  (apl-rotate
-    2
-    (list 1 2 3 4 5))
-  (list 3 4 5 1 2))
-(apl-test
-  "compress"
-  (apl-compress
-    (list 1 0 1 0)
-    (list 10 20 30 40))
-  (list 10 30))
-(apl-test
-  "index"
-  (apl-index
-    (list 10 20 30 40)
-    (list 2 4))
-  (list 20 40))
-
-;; ---------------------------------------------------------------------------
-;; 8. Set operations
-;; ---------------------------------------------------------------------------
-
-(apl-test
-  "member yes"
-  (apl-member
-    (list 1 2 5)
-    (list 2 4 6))
-  (list 0 1 0))
-(apl-test
-  "member s"
-  (apl-member 2 (list 1 2 3))
-  1)
-(apl-test
-  "member no"
-  (apl-member 9 (list 1 2 3))
-  0)
-(apl-test
-  "nub"
-  (apl-nub (list 1 2 1 3 2))
-  (list 1 2 3))
-(apl-test
-  "union"
-  (apl-union
-    (list 1 2 3)
-    (list 2 3 4))
-  (list 1 2 3 4))
-(apl-test
-  "intersect"
-  (apl-intersect
-    (list 1 2 3 4)
-    (list 2 4 6))
-  (list 2 4))
-(apl-test
-  "without"
-  (apl-without
-    (list 1 2 3 4)
-    (list 2 4))
-  (list 1 3))
-
-;; ---------------------------------------------------------------------------
-;; 9. Format
-;; ---------------------------------------------------------------------------
-
-(apl-test
-  "format vec"
-  (apl-format (list 1 2 3))
-  "1 2 3")
-(apl-test "format scalar" (apl-format 42) "42")
-(apl-test "format empty" (apl-format (list)) "")
-
-;; ---------------------------------------------------------------------------
-;; Summary
-;; ---------------------------------------------------------------------------
-
-(list apl-test-pass apl-test-fail)

lib/common-lisp/eval.sx

@@ -1,710 +0,0 @@
-;; Common Lisp evaluator — evaluates CL AST forms.
-;;
-;; Depends on: lib/common-lisp/reader.sx, lib/common-lisp/parser.sx
-;;
-;; Environment:
-;;   {:vars {"NAME" val ...} :fns {"NAME" cl-fn ...}}
-;; CL function:
-;;   {:cl-type "function" :params ll :body forms :env env}
-;;
-;; Public API:
-;;   (cl-make-env)              — create empty environment
-;;   (cl-eval form env)         — evaluate one CL AST form
-;;   (cl-eval-str src env)      — read+eval a CL source string
-;;   (cl-eval-all-str src env)  — read-all+eval-each, return last
-;;   cl-global-env              — global mutable environment
-
-;; ── environment ──────────────────────────────────────────────────
-
-(define cl-make-env (fn () {:vars {} :fns {}}))
-
-(define cl-global-env (cl-make-env))
-
-(define cl-env-get-var  (fn (env name) (get (get env "vars") name)))
-(define cl-env-has-var? (fn (env name) (has-key? (get env "vars") name)))
-(define cl-env-get-fn   (fn (env name) (get (get env "fns") name)))
-(define cl-env-has-fn?  (fn (env name) (has-key? (get env "fns") name)))
-
-(define cl-env-bind-var
-  (fn (env name value)
-    {:vars (assoc (get env "vars") name value)
-     :fns  (get env "fns")}))
-
-(define cl-env-bind-fn
-  (fn (env name fn-obj)
-    {:vars (get env "vars")
-     :fns  (assoc (get env "fns") name fn-obj)}))
-
-;; ── body evaluation ───────────────────────────────────────────────
-
-(define cl-block-return?
-  (fn (v) (and (dict? v) (= (get v "cl-type") "block-return"))))
-
-(define cl-go-tag?
-  (fn (v) (and (dict? v) (= (get v "cl-type") "go-tag"))))
-
-(define cl-mv?
-  (fn (v) (and (dict? v) (= (get v "cl-type") "mv"))))
-
-(define cl-mv-primary
-  (fn (v)
-    (if (cl-mv? v)
-      (if (> (len (get v "vals")) 0) (nth (get v "vals") 0) nil)
-      v)))
-
-(define cl-mv-vals
-  (fn (v) (if (cl-mv? v) (get v "vals") (list v))))
-
-(define cl-eval-body
-  (fn (forms env)
-    (cond
-      ((= (len forms) 0) nil)
-      ((= (len forms) 1) (cl-eval (nth forms 0) env))
-      (:else
-        (let ((result (cl-eval (nth forms 0) env)))
-          (if (or (cl-block-return? result) (cl-go-tag? result))
-            result
-            (cl-eval-body (rest forms) env)))))))
-
-;; ── lambda-list binding helpers ───────────────────────────────────
-
-(define cl-bind-required
-  (fn (names args env)
-    (if (= (len names) 0)
-      env
-      (cl-bind-required
-        (rest names)
-        (if (> (len args) 0) (rest args) args)
-        (cl-env-bind-var env
-          (nth names 0)
-          (if (> (len args) 0) (nth args 0) nil))))))
-
-;; returns {:env e :rest remaining-args}
-(define cl-bind-optional
-  (fn (opts args env)
-    (if (= (len opts) 0)
-      {:env env :rest args}
-      (let ((spec    (nth opts 0))
-            (has-val (> (len args) 0)))
-        (let ((val (if has-val (nth args 0) nil))
-              (rem (if has-val (rest args) args)))
-          (let ((e1 (cl-env-bind-var env (get spec "name")
-                      (if has-val val
-                        (if (get spec "default")
-                          (cl-eval (get spec "default") env) nil)))))
-            (let ((e2 (if (get spec "supplied")
-                        (cl-env-bind-var e1 (get spec "supplied") has-val)
-                        e1)))
-              (cl-bind-optional (rest opts) rem e2))))))))
-
-;; returns {:found bool :value v}
-(define cl-find-kw-arg
-  (fn (kw args i)
-    (if (>= i (len args))
-      {:found false :value nil}
-      (let ((a (nth args i)))
-        (if (and (dict? a)
-                 (= (get a "cl-type") "keyword")
-                 (= (get a "name") kw))
-          {:found true
-           :value (if (< (+ i 1) (len args)) (nth args (+ i 1)) nil)}
-          (cl-find-kw-arg kw args (+ i 2)))))))
-
-(define cl-bind-key
-  (fn (key-specs all-args env)
-    (if (= (len key-specs) 0)
-      env
-      (let ((spec (nth key-specs 0))
-            (r    (cl-find-kw-arg (get (nth key-specs 0) "keyword") all-args 0)))
-        (let ((found (get r "found"))
-              (kval  (get r "value")))
-          (let ((e1 (cl-env-bind-var env (get spec "name")
-                      (if found kval
-                        (if (get spec "default")
-                          (cl-eval (get spec "default") env) nil)))))
-            (let ((e2 (if (get spec "supplied")
-                        (cl-env-bind-var e1 (get spec "supplied") found)
-                        e1)))
-              (cl-bind-key (rest key-specs) all-args e2))))))))
-
-(define cl-bind-aux
-  (fn (aux-specs env)
-    (if (= (len aux-specs) 0)
-      env
-      (let ((spec (nth aux-specs 0)))
-        (cl-bind-aux
-          (rest aux-specs)
-          (cl-env-bind-var env (get spec "name")
-            (if (get spec "init") (cl-eval (get spec "init") env) nil)))))))
-
-;; ── function creation ─────────────────────────────────────────────
-
-;; ll-and-body: (list lambda-list-form body-form ...)
-(define cl-make-lambda
-  (fn (ll-and-body env)
-    {:cl-type "function"
-     :params  (cl-parse-lambda-list (nth ll-and-body 0))
-     :body    (rest ll-and-body)
-     :env     env}))
-
-;; ── function application ──────────────────────────────────────────
-
-(define cl-apply
-  (fn (fn-obj args)
-    (cond
-      ((and (dict? fn-obj) (has-key? fn-obj "builtin-fn"))
-        ((get fn-obj "builtin-fn") args))
-      ((or (not (dict? fn-obj)) (not (= (get fn-obj "cl-type") "function")))
-        {:cl-type "error" :message "Not a function"})
-      (:else
-        (let ((params (get fn-obj "params"))
-            (body   (get fn-obj "body"))
-            (cenv   (get fn-obj "env")))
-        (let ((req       (get params "required"))
-              (opt       (get params "optional"))
-              (rest-name (get params "rest"))
-              (key-specs (get params "key"))
-              (aux-specs (get params "aux")))
-          (let ((e1 (cl-bind-required req args cenv)))
-            (let ((opt-r (cl-bind-optional
-                           opt (slice args (len req) (len args)) e1)))
-              (let ((e2  (get opt-r "env"))
-                    (rem (get opt-r "rest")))
-                (let ((e3 (if rest-name
-                            (cl-env-bind-var e2 rest-name rem)
-                            e2)))
-                  (let ((e4 (cl-bind-key key-specs args e3)))
-                    (let ((e5 (cl-bind-aux aux-specs e4)))
-                      (cl-eval-body body e5)))))))))))))
-
-;; ── built-in functions ────────────────────────────────────────────
-
-(define cl-builtins
-  (dict
-    "+"   (fn (args) (reduce (fn (a b) (+ a b)) 0 args))
-    "-"   (fn (args)
-            (cond
-              ((= (len args) 0) 0)
-              ((= (len args) 1) (- 0 (nth args 0)))
-              (:else (reduce (fn (a b) (- a b)) (nth args 0) (rest args)))))
-    "*"   (fn (args) (reduce (fn (a b) (* a b)) 1 args))
-    "/"   (fn (args)
-            (cond
-              ((= (len args) 0) 1)
-              ((= (len args) 1) (/ 1 (nth args 0)))
-              (:else (reduce (fn (a b) (/ a b)) (nth args 0) (rest args)))))
-    "1+"  (fn (args) (+ (nth args 0) 1))
-    "1-"  (fn (args) (- (nth args 0) 1))
-    "="   (fn (args) (if (= (nth args 0) (nth args 1)) true nil))
-    "/="  (fn (args) (if (not (= (nth args 0) (nth args 1))) true nil))
-    "<"   (fn (args) (if (< (nth args 0) (nth args 1)) true nil))
-    ">"   (fn (args) (if (> (nth args 0) (nth args 1)) true nil))
-    "<="  (fn (args) (if (<= (nth args 0) (nth args 1)) true nil))
-    ">="  (fn (args) (if (>= (nth args 0) (nth args 1)) true nil))
-    "NOT"   (fn (args) (if (nth args 0) nil true))
-    "NULL"  (fn (args) (if (= (nth args 0) nil) true nil))
-    "NUMBERP" (fn (args) (if (number? (nth args 0)) true nil))
-    "STRINGP" (fn (args) (if (string? (nth args 0)) true nil))
-    "SYMBOLP" (fn (args) nil)
-    "LISTP"   (fn (args)
-                 (if (or (list? (nth args 0)) (= (nth args 0) nil)) true nil))
-    "CONSP"   (fn (args)
-                 (let ((x (nth args 0)))
-                   (if (and (dict? x) (= (get x "cl-type") "cons")) true nil)))
-    "ATOM"    (fn (args)
-                 (let ((x (nth args 0)))
-                   (if (and (dict? x) (= (get x "cl-type") "cons")) nil true)))
-    "FUNCTIONP" (fn (args)
-                   (let ((x (nth args 0)))
-                     (if (and (dict? x) (= (get x "cl-type") "function")) true nil)))
-    "ZEROP"  (fn (args) (if (= (nth args 0) 0) true nil))
-    "PLUSP"  (fn (args) (if (> (nth args 0) 0) true nil))
-    "MINUSP" (fn (args) (if (< (nth args 0) 0) true nil))
-    "EVENP"  (fn (args)
-                (let ((n (nth args 0)))
-                  (if (= (mod n 2) 0) true nil)))
-    "ODDP"   (fn (args)
-                (let ((n (nth args 0)))
-                  (if (not (= (mod n 2) 0)) true nil)))
-    "ABS"    (fn (args) (let ((n (nth args 0))) (if (< n 0) (- 0 n) n)))
-    "MAX"    (fn (args) (reduce (fn (a b) (if (> a b) a b)) (nth args 0) (rest args)))
-    "MIN"    (fn (args) (reduce (fn (a b) (if (< a b) a b)) (nth args 0) (rest args)))
-    "CONS"   (fn (args) {:cl-type "cons" :car (nth args 0) :cdr (nth args 1)})
-    "CAR"    (fn (args)
-                (let ((x (nth args 0)))
-                  (if (and (dict? x) (= (get x "cl-type") "cons"))
-                    (get x "car")
-                    (if (and (list? x) (> (len x) 0)) (nth x 0) nil))))
-    "CDR"    (fn (args)
-                (let ((x (nth args 0)))
-                  (if (and (dict? x) (= (get x "cl-type") "cons"))
-                    (get x "cdr")
-                    (if (list? x) (rest x) nil))))
-    "LIST"   (fn (args) args)
-    "APPEND" (fn (args)
-                (if (= (len args) 0) (list)
-                  (reduce (fn (a b)
-                    (if (= a nil) b (if (= b nil) a (concat a b))))
-                  (list) args)))
-    "LENGTH" (fn (args)
-                (let ((x (nth args 0)))
-                  (if (= x nil) 0 (len x))))
-    "NTH"    (fn (args) (nth (nth args 1) (nth args 0)))
-    "FIRST"  (fn (args)
-                (let ((x (nth args 0)))
-                  (if (and (list? x) (> (len x) 0)) (nth x 0) nil)))
-    "SECOND" (fn (args)
-                (let ((x (nth args 0)))
-                  (if (and (list? x) (> (len x) 1)) (nth x 1) nil)))
-    "THIRD"  (fn (args)
-                (let ((x (nth args 0)))
-                  (if (and (list? x) (> (len x) 2)) (nth x 2) nil)))
-    "REST"   (fn (args) (rest (nth args 0)))
-    "REVERSE" (fn (args)
-                 (reduce (fn (acc x) (concat (list x) acc))
-                         (list) (nth args 0)))
-    "IDENTITY" (fn (args) (nth args 0))
-    "VALUES"   (fn (args) (cond ((= (len args) 0) nil) ((= (len args) 1) (nth args 0)) (:else {:cl-type "mv" :vals args})))
-    "PRINT"    (fn (args) (nth args 0))
-    "PRIN1"    (fn (args) (nth args 0))
-    "PRINC"    (fn (args) (nth args 0))
-    "TERPRI"   (fn (args) nil)
-    "WRITE"    (fn (args) (nth args 0))
-    "STRING-UPCASE"   (fn (args) (upcase (nth args 0)))
-    "STRING-DOWNCASE" (fn (args) (downcase (nth args 0)))
-    "STRING="         (fn (args) (if (= (nth args 0) (nth args 1)) true nil))
-    "CONCATENATE"     (fn (args) (reduce (fn (a b) (str a b)) "" (rest args)))
-    "EQ"    (fn (args) (if (= (nth args 0) (nth args 1)) true nil))
-    "EQL"   (fn (args) (if (= (nth args 0) (nth args 1)) true nil))
-    "EQUAL" (fn (args) (if (= (nth args 0) (nth args 1)) true nil))))
-
-;; Register builtins in cl-global-env so (function #'name) resolves them
-(for-each
-  (fn (name)
-    (dict-set! (get cl-global-env "fns") name
-      {:cl-type "function" :builtin-fn (get cl-builtins name)}))
-  (keys cl-builtins))
-
-;; ── TAGBODY / GO ─────────────────────────────────────────────────
-
-(define cl-tagbody-tag?
-  (fn (form) (or (string? form) (number? form))))
-
-(define cl-build-tag-map
-  (fn (forms i acc)
-    (if (>= i (len forms))
-      acc
-      (if (cl-tagbody-tag? (nth forms i))
-        (cl-build-tag-map forms (+ i 1)
-          (assoc acc (str (nth forms i)) i))
-        (cl-build-tag-map forms (+ i 1) acc)))))
-
-(define cl-eval-tagbody
-  (fn (args env)
-    (let ((tag-map (cl-build-tag-map args 0 {})))
-      (define run
-        (fn (i)
-          (if (>= i (len args))
-            nil
-            (let ((form (nth args i)))
-              (if (cl-tagbody-tag? form)
-                (run (+ i 1))
-                (let ((result (cl-eval form env)))
-                  (cond
-                    ((cl-go-tag? result)
-                      (let ((target (get result "tag")))
-                        (let ((tkey (str target)))
-                          (if (has-key? tag-map tkey)
-                            (run (get tag-map tkey))
-                            {:cl-type "error" :message (str "No tag: " target)}))))
-                    ((cl-block-return? result) result)
-                    (:else (run (+ i 1))))))))))
-      (run 0))))
-
-;; ── MULTIPLE VALUES ──────────────────────────────────────────────
-
-(define cl-eval-multiple-value-bind
-  (fn (args env)
-    (let ((vars  (nth args 0))
-          (form  (nth args 1))
-          (body  (rest (rest args))))
-      (let ((vals (cl-mv-vals (cl-eval form env))))
-        (define bind-vars
-          (fn (names i e)
-            (if (= (len names) 0)
-              e
-              (bind-vars (rest names) (+ i 1)
-                (cl-env-bind-var e (nth names 0)
-                  (if (< i (len vals)) (nth vals i) nil))))))
-        (cl-eval-body body (bind-vars vars 0 env))))))
-
-(define cl-eval-multiple-value-call
-  (fn (args env)
-    (let ((fn-obj (cl-eval (nth args 0) env))
-          (forms  (rest args)))
-      (let ((all-vals (reduce
-                        (fn (acc f)
-                          (concat acc (cl-mv-vals (cl-eval f env))))
-                        (list) forms)))
-        (cl-apply fn-obj all-vals)))))
-
-(define cl-eval-multiple-value-prog1
-  (fn (args env)
-    (let ((first-result (cl-eval (nth args 0) env)))
-      (for-each (fn (f) (cl-eval f env)) (rest args))
-      first-result)))
-
-;; ── UNWIND-PROTECT ───────────────────────────────────────────────
-
-(define cl-eval-unwind-protect
-  (fn (args env)
-    (let ((protected (nth args 0))
-          (cleanup   (rest args)))
-      (let ((result (cl-eval protected env)))
-        (for-each (fn (f) (cl-eval f env)) cleanup)
-        result))))
-
-;; ── BLOCK / RETURN-FROM ───────────────────────────────────────────
-
-(define cl-eval-block
-  (fn (args env)
-    (let ((name (nth args 0))
-          (body (rest args)))
-      (let ((result (cl-eval-body body env)))
-        (if (and (cl-block-return? result)
-                 (= (get result "name") name))
-          (get result "value")
-          result)))))
-
-(define cl-eval-return-from
-  (fn (args env)
-    (let ((name (nth args 0))
-          (val  (if (> (len args) 1) (cl-eval (nth args 1) env) nil)))
-      {:cl-type "block-return" :name name :value val})))
-
-;; ── special form evaluators ───────────────────────────────────────
-
-(define cl-eval-if
-  (fn (args env)
-    (let ((cond-val  (cl-mv-primary (cl-eval (nth args 0) env)))
-          (then-form (nth args 1))
-          (else-form (if (> (len args) 2) (nth args 2) nil)))
-      (if cond-val
-        (cl-eval then-form env)
-        (if else-form (cl-eval else-form env) nil)))))
-
-(define cl-eval-and
-  (fn (args env)
-    (if (= (len args) 0)
-      true
-      (let ((val (cl-mv-primary (cl-eval (nth args 0) env))))
-        (if (not val)
-          nil
-          (if (= (len args) 1)
-            val
-            (cl-eval-and (rest args) env)))))))
-
-(define cl-eval-or
-  (fn (args env)
-    (if (= (len args) 0)
-      nil
-      (let ((val (cl-mv-primary (cl-eval (nth args 0) env))))
-        (if val
-          val
-          (cl-eval-or (rest args) env))))))
-
-(define cl-eval-cond
-  (fn (clauses env)
-    (if (= (len clauses) 0)
-      nil
-      (let ((clause (nth clauses 0)))
-        (let ((test-val (cl-mv-primary (cl-eval (nth clause 0) env))))
-          (if test-val
-            (if (= (len clause) 1)
-              test-val
-              (cl-eval-body (rest clause) env))
-            (cl-eval-cond (rest clauses) env)))))))
-
-;; Parallel LET and sequential LET*
-(define cl-eval-let
-  (fn (args env sequential)
-    (let ((bindings (nth args 0))
-          (body     (rest args)))
-      (if sequential
-        ;; LET*: each binding sees previous ones
-        (let ((new-env env))
-          (define bind-seq
-            (fn (bs e)
-              (if (= (len bs) 0)
-                e
-                (let ((b (nth bs 0)))
-                  (let ((name (if (list? b) (nth b 0) b))
-                        (init (if (and (list? b) (> (len b) 1)) (nth b 1) nil)))
-                    (bind-seq (rest bs)
-                      (cl-env-bind-var e name (cl-eval init e))))))))
-          (cl-eval-body body (bind-seq bindings env)))
-        ;; LET: evaluate all inits in current env, then bind
-        (let ((pairs (map
-                       (fn (b)
-                         (let ((name (if (list? b) (nth b 0) b))
-                               (init (if (and (list? b) (> (len b) 1)) (nth b 1) nil)))
-                           {:name name :value (cl-eval init env)}))
-                       bindings)))
-          (let ((new-env (reduce
-                           (fn (e pair)
-                             (cl-env-bind-var e (get pair "name") (get pair "value")))
-                           env pairs)))
-            (cl-eval-body body new-env)))))))
-
-;; SETQ / SETF (simplified: mutate nearest scope or global)
-(define cl-eval-setq
-  (fn (args env)
-    (if (< (len args) 2)
-      nil
-      (let ((name (nth args 0))
-            (val  (cl-eval (nth args 1) env)))
-        (if (has-key? (get env "vars") name)
-          (dict-set! (get env "vars") name val)
-          (dict-set! (get cl-global-env "vars") name val))
-        (if (> (len args) 2)
-          (cl-eval-setq (rest (rest args)) env)
-          val)))))
-
-;; FUNCTION: get function value or create lambda
-(define cl-eval-function
-  (fn (args env)
-    (let ((spec (nth args 0)))
-      (cond
-        ((and (list? spec) (> (len spec) 0) (= (nth spec 0) "LAMBDA"))
-          (cl-make-lambda (rest spec) env))
-        ((string? spec)
-          (cond
-            ((cl-env-has-fn? env spec) (cl-env-get-fn env spec))
-            ((cl-env-has-fn? cl-global-env spec)
-              (cl-env-get-fn cl-global-env spec))
-            (:else {:cl-type "error" :message (str "Undefined function: " spec)})))
-        (:else {:cl-type "error" :message "FUNCTION: invalid spec"})))))
-
-;; FLET: local functions (non-recursive, close over outer env)
-(define cl-eval-flet
-  (fn (args env)
-    (let ((fn-defs (nth args 0))
-          (body    (rest args)))
-      (let ((new-env (reduce
-                       (fn (e def)
-                         (let ((name    (nth def 0))
-                               (ll      (nth def 1))
-                               (fn-body (rest (rest def))))
-                           (cl-env-bind-fn e name
-                             {:cl-type "function"
-                              :params  (cl-parse-lambda-list ll)
-                              :body    fn-body
-                              :env     env})))
-                       env fn-defs)))
-        (cl-eval-body body new-env)))))
-
-;; LABELS: mutually-recursive local functions
-(define cl-eval-labels
-  (fn (args env)
-    (let ((fn-defs (nth args 0))
-          (body    (rest args)))
-      ;; Build env with placeholder nil entries for each name
-      (let ((new-env (reduce
-                       (fn (e def) (cl-env-bind-fn e (nth def 0) nil))
-                       env fn-defs)))
-        ;; Fill in real function objects that capture new-env
-        (for-each
-          (fn (def)
-            (let ((name    (nth def 0))
-                  (ll      (nth def 1))
-                  (fn-body (rest (rest def))))
-              (dict-set! (get new-env "fns") name
-                {:cl-type "function"
-                 :params  (cl-parse-lambda-list ll)
-                 :body    fn-body
-                 :env     new-env})))
-          fn-defs)
-        (cl-eval-body body new-env)))))
-
-;; EVAL-WHEN: evaluate body only if :execute is in situations
-(define cl-eval-eval-when
-  (fn (args env)
-    (let ((situations (nth args 0))
-          (body       (rest args)))
-      (define has-exec
-        (some (fn (s)
-                (or
-                  (and (dict? s)
-                       (= (get s "cl-type") "keyword")
-                       (= (get s "name") "EXECUTE"))
-                  (= s "EXECUTE")))
-              situations))
-      (if has-exec (cl-eval-body body env) nil))))
-
-;; DEFUN: define function in global fns namespace
-(define cl-eval-defun
-  (fn (args env)
-    (let ((name    (nth args 0))
-          (ll      (nth args 1))
-          (fn-body (rest (rest args))))
-      (let ((fn-obj {:cl-type "function"
-                     :params  (cl-parse-lambda-list ll)
-                     :body    fn-body
-                     :env     env}))
-        (dict-set! (get cl-global-env "fns") name fn-obj)
-        name))))
-
-;; DEFVAR / DEFPARAMETER / DEFCONSTANT
-(define cl-eval-defvar
-  (fn (args env always-assign)
-    (let ((name     (nth args 0))
-          (has-init (> (len args) 1)))
-      (let ((val (if has-init (cl-eval (nth args 1) env) nil)))
-        (when (or always-assign
-                  (not (cl-env-has-var? cl-global-env name)))
-          (dict-set! (get cl-global-env "vars") name val))
-        name))))
-
-;; Function call: evaluate name → look up fns, builtins; evaluate args
-(define cl-call-fn
-  (fn (name args env)
-    (let ((evaled (map (fn (a) (cl-mv-primary (cl-eval a env))) args)))
-      (cond
-        ;; FUNCALL: (funcall fn arg...)
-        ((= name "FUNCALL")
-          (cl-apply (nth evaled 0) (rest evaled)))
-        ;; APPLY: (apply fn arg... list)
-        ((= name "APPLY")
-          (let ((fn-obj   (nth evaled 0))
-                (all-args (rest evaled)))
-            (let ((leading  (slice all-args 0 (- (len all-args) 1)))
-                  (last-arg (nth all-args (- (len all-args) 1))))
-              (cl-apply fn-obj (concat leading (if (= last-arg nil) (list) last-arg))))))
-        ;; MAPCAR: (mapcar fn list)
-        ((= name "MAPCAR")
-          (let ((fn-obj (nth evaled 0))
-                (lst    (nth evaled 1)))
-            (if (= lst nil) (list)
-              (map (fn (x) (cl-apply fn-obj (list x))) lst))))
-        ;; Look up in local fns namespace
-        ((cl-env-has-fn? env name)
-          (cl-apply (cl-env-get-fn env name) evaled))
-        ;; Look up in global fns namespace
-        ((cl-env-has-fn? cl-global-env name)
-          (cl-apply (cl-env-get-fn cl-global-env name) evaled))
-        ;; Look up in builtins
-        ((has-key? cl-builtins name)
-          ((get cl-builtins name) evaled))
-        (:else
-          {:cl-type "error" :message (str "Undefined function: " name)})))))
-
-;; ── main evaluator ────────────────────────────────────────────────
-
-(define cl-eval
-  (fn (form env)
-    (cond
-      ;; Nil and booleans are self-evaluating
-      ((= form nil) nil)
-      ((= form true) true)
-      ;; Numbers are self-evaluating
-      ((number? form) form)
-      ;; Dicts: typed CL values
-      ((dict? form)
-        (let ((ct (get form "cl-type")))
-          (cond
-            ((= ct "string") (get form "value"))  ;; CL string → SX string
-            (:else form))))                         ;; keywords, floats, chars, etc.
-      ;; Symbol reference (variable lookup)
-      ((string? form)
-        (cond
-          ((cl-env-has-var? env form) (cl-env-get-var env form))
-          ((cl-env-has-var? cl-global-env form)
-            (cl-env-get-var cl-global-env form))
-          (:else {:cl-type "error" :message (str "Undefined variable: " form)})))
-      ;; List: special forms or function call
-      ((list? form) (cl-eval-list form env))
-      ;; Anything else self-evaluates
-      (:else form))))
-
-(define cl-eval-list
-  (fn (form env)
-    (if (= (len form) 0)
-      nil
-      (let ((head (nth form 0))
-            (args (rest form)))
-        (cond
-          ((= head "QUOTE")        (nth args 0))
-          ((= head "IF")           (cl-eval-if args env))
-          ((= head "PROGN")        (cl-eval-body args env))
-          ((= head "LET")          (cl-eval-let args env false))
-          ((= head "LET*")         (cl-eval-let args env true))
-          ((= head "AND")          (cl-eval-and args env))
-          ((= head "OR")           (cl-eval-or args env))
-          ((= head "COND")         (cl-eval-cond args env))
-          ((= head "WHEN")
-            (if (cl-eval (nth args 0) env)
-              (cl-eval-body (rest args) env) nil))
-          ((= head "UNLESS")
-            (if (not (cl-eval (nth args 0) env))
-              (cl-eval-body (rest args) env) nil))
-          ((= head "SETQ")         (cl-eval-setq args env))
-          ((= head "SETF")         (cl-eval-setq args env))
-          ((= head "FUNCTION")     (cl-eval-function args env))
-          ((= head "LAMBDA")       (cl-make-lambda args env))
-          ((= head "FLET")         (cl-eval-flet args env))
-          ((= head "LABELS")       (cl-eval-labels args env))
-          ((= head "THE")          (cl-eval (nth args 1) env))
-          ((= head "LOCALLY")      (cl-eval-body args env))
-          ((= head "EVAL-WHEN")    (cl-eval-eval-when args env))
-          ((= head "DEFUN")        (cl-eval-defun args env))
-          ((= head "TAGBODY")      (cl-eval-tagbody args env))
-          ((= head "GO")
-            {:cl-type "go-tag" :tag (nth args 0)})
-          ((= head "MULTIPLE-VALUE-BIND")  (cl-eval-multiple-value-bind args env))
-          ((= head "MULTIPLE-VALUE-CALL")  (cl-eval-multiple-value-call args env))
-          ((= head "MULTIPLE-VALUE-PROG1") (cl-eval-multiple-value-prog1 args env))
-          ((= head "NTH-VALUE")
-            (let ((n (cl-mv-primary (cl-eval (nth args 0) env)))
-                  (vals (cl-mv-vals (cl-eval (nth args 1) env))))
-              (if (< n (len vals)) (nth vals n) nil)))
-          ((= head "UNWIND-PROTECT") (cl-eval-unwind-protect args env))
-          ((= head "BLOCK")        (cl-eval-block args env))
-          ((= head "RETURN-FROM")  (cl-eval-return-from args env))
-          ((= head "RETURN")
-            (let ((val (if (> (len args) 0) (cl-eval (nth args 0) env) nil)))
-              {:cl-type "block-return" :name nil :value val}))
-          ((= head "DEFVAR")       (cl-eval-defvar args env false))
-          ((= head "DEFPARAMETER") (cl-eval-defvar args env true))
-          ((= head "DEFCONSTANT")  (cl-eval-defvar args env true))
-          ((= head "DECLAIM")      nil)
-          ((= head "PROCLAIM")     nil)
-          ;; Named function call
-          ((string? head)
-            (cl-call-fn head args env))
-          ;; Anonymous call: ((lambda ...) args)
-          (:else
-            (let ((fn-obj (cl-eval head env)))
-              (if (and (dict? fn-obj) (= (get fn-obj "cl-type") "function"))
-                (cl-apply fn-obj (map (fn (a) (cl-eval a env)) args))
-                {:cl-type "error" :message "Not callable"}))))))))
-
-;; ── public API ────────────────────────────────────────────────────
-
-(define cl-eval-str
-  (fn (src env)
-    (cl-eval (cl-read src) env)))
-
-(define cl-eval-all-str
-  (fn (src env)
-    (let ((forms (cl-read-all src)))
-      (if (= (len forms) 0)
-        nil
-        (let ((result nil) (i 0))
-          (define loop (fn ()
-            (when (< i (len forms))
-              (do
-                (set! result (cl-eval (nth forms i) env))
-                (set! i (+ i 1))
-                (loop)))))
-          (loop)
-          result)))))

lib/common-lisp/parser.sx

@@ -1,377 +0,0 @@
-;; Common Lisp reader — converts token stream to CL AST forms.
-;;
-;; Depends on: lib/common-lisp/reader.sx  (cl-tokenize)
-;;
-;; AST representation:
-;;   integer/float         → SX number (or {:cl-type "float"/:ratio ...})
-;;   string "hello"        → {:cl-type "string" :value "hello"}
-;;   symbol FOO            → SX string "FOO"  (upcase)
-;;   symbol NIL            → nil
-;;   symbol T              → true
-;;   :keyword              → {:cl-type "keyword" :name "FOO"}
-;;   #\char                → {:cl-type "char"    :value "a"}
-;;   #:uninterned          → {:cl-type "uninterned" :name "FOO"}
-;;   ratio 1/3             → {:cl-type "ratio"   :value "1/3"}
-;;   float 3.14            → {:cl-type "float"   :value "3.14"}
-;;   proper list (a b c)   → SX list (a b c)
-;;   dotted pair (a . b)   → {:cl-type "cons" :car a :cdr b}
-;;   vector #(a b)         → {:cl-type "vector" :elements (list a b)}
-;;   'x                    → ("QUOTE" x)
-;;   `x                    → ("QUASIQUOTE" x)
-;;   ,x                    → ("UNQUOTE" x)
-;;   ,@x                   → ("UNQUOTE-SPLICING" x)
-;;   #'x                   → ("FUNCTION" x)
-;;
-;; Public API:
-;;   (cl-read src)         — parse first form from string, return form
-;;   (cl-read-all src)     — parse all top-level forms, return list
-
-;; ── number conversion ─────────────────────────────────────────────
-
-(define
-  cl-hex-val
-  (fn
-    (c)
-    (let
-      ((o (cl-ord c)))
-      (cond
-        ((and (>= o 48) (<= o 57)) (- o 48))
-        ((and (>= o 65) (<= o 70)) (+ 10 (- o 65)))
-        ((and (>= o 97) (<= o 102)) (+ 10 (- o 97)))
-        (:else 0)))))
-
-(define
-  cl-parse-radix-str
-  (fn
-    (s radix start)
-    (let
-      ((n (string-length s)) (i start) (acc 0))
-      (define
-        loop
-        (fn
-          ()
-          (when
-            (< i n)
-            (do
-              (set! acc (+ (* acc radix) (cl-hex-val (substring s i (+ i 1)))))
-              (set! i (+ i 1))
-              (loop)))))
-      (loop)
-      acc)))
-
-(define
-  cl-convert-integer
-  (fn
-    (s)
-    (let
-      ((n (string-length s)) (neg false))
-      (cond
-        ((and (> n 2) (= (substring s 0 1) "#"))
-          (let
-            ((letter (downcase (substring s 1 2))))
-            (cond
-              ((= letter "x") (cl-parse-radix-str s 16 2))
-              ((= letter "b") (cl-parse-radix-str s 2 2))
-              ((= letter "o") (cl-parse-radix-str s 8 2))
-              (:else (parse-int s 0)))))
-        (:else (parse-int s 0))))))
-
-;; ── reader ────────────────────────────────────────────────────────
-
-;; Read one form from token list.
-;; Returns {:form F :rest remaining-toks} or {:form nil :rest toks :eof true}
-(define
-  cl-read-form
-  (fn
-    (toks)
-    (if
-      (not toks)
-      {:form nil :rest toks :eof true}
-      (let
-        ((tok (nth toks 0)) (nxt (rest toks)))
-        (let
-          ((type (get tok "type")) (val (get tok "value")))
-          (cond
-            ((= type "eof") {:form nil :rest toks :eof true})
-            ((= type "integer") {:form (cl-convert-integer val) :rest nxt})
-            ((= type "float") {:form {:cl-type "float" :value val} :rest nxt})
-            ((= type "ratio") {:form {:cl-type "ratio" :value val} :rest nxt})
-            ((= type "string") {:form {:cl-type "string" :value val} :rest nxt})
-            ((= type "char") {:form {:cl-type "char" :value val} :rest nxt})
-            ((= type "keyword") {:form {:cl-type "keyword" :name val} :rest nxt})
-            ((= type "uninterned") {:form {:cl-type "uninterned" :name val} :rest nxt})
-            ((= type "symbol")
-              (cond
-                ((= val "NIL") {:form nil :rest nxt})
-                ((= val "T") {:form true :rest nxt})
-                (:else {:form val :rest nxt})))
-            ;; list forms
-            ((= type "lparen") (cl-read-list nxt))
-            ((= type "hash-paren") (cl-read-vector nxt))
-            ;; reader macros that wrap the next form
-            ((= type "quote") (cl-read-wrap "QUOTE" nxt))
-            ((= type "backquote") (cl-read-wrap "QUASIQUOTE" nxt))
-            ((= type "comma") (cl-read-wrap "UNQUOTE" nxt))
-            ((= type "comma-at") (cl-read-wrap "UNQUOTE-SPLICING" nxt))
-            ((= type "hash-quote") (cl-read-wrap "FUNCTION" nxt))
-            ;; skip unrecognised tokens
-            (:else (cl-read-form nxt))))))))
-
-;; Wrap next form in a list: (name form)
-(define
-  cl-read-wrap
-  (fn
-    (name toks)
-    (let
-      ((inner (cl-read-form toks)))
-      {:form (list name (get inner "form")) :rest (get inner "rest")})))
-
-;; Read list forms until ')'; handles dotted pair (a . b)
-;; Called after consuming '('
-(define
-  cl-read-list
-  (fn
-    (toks)
-    (let
-      ((result (cl-read-list-items toks (list))))
-      {:form (get result "items") :rest (get result "rest")})))
-
-(define
-  cl-read-list-items
-  (fn
-    (toks acc)
-    (if
-      (not toks)
-      {:items acc :rest toks}
-      (let
-        ((tok (nth toks 0)))
-        (let
-          ((type (get tok "type")))
-          (cond
-            ((= type "eof") {:items acc :rest toks})
-            ((= type "rparen") {:items acc :rest (rest toks)})
-            ;; dotted pair: read one more form then expect ')'
-            ((= type "dot")
-              (let
-                ((cdr-result (cl-read-form (rest toks))))
-                (let
-                  ((cdr-form (get cdr-result "form"))
-                    (after-cdr (get cdr-result "rest")))
-                  ;; skip the closing ')'
-                  (let
-                    ((close (if after-cdr (nth after-cdr 0) nil)))
-                    (let
-                      ((remaining
-                          (if
-                            (and close (= (get close "type") "rparen"))
-                            (rest after-cdr)
-                            after-cdr)))
-                      ;; build dotted structure
-                      (let
-                        ((dotted (cl-build-dotted acc cdr-form)))
-                        {:items dotted :rest remaining}))))))
-            (:else
-              (let
-                ((item (cl-read-form toks)))
-                (cl-read-list-items
-                  (get item "rest")
-                  (concat acc (list (get item "form"))))))))))))
-
-;; Build dotted form: (a b . c) → ((DOTTED a b) . c) style
-;; In CL (a b c . d) means a proper dotted structure.
-;; We represent it as {:cl-type "cons" :car a :cdr (list->dotted b c d)}
-(define
-  cl-build-dotted
-  (fn
-    (head-items tail)
-    (if
-      (= (len head-items) 0)
-      tail
-      (if
-        (= (len head-items) 1)
-        {:cl-type "cons" :car (nth head-items 0) :cdr tail}
-        (let
-          ((last-item (nth head-items (- (len head-items) 1)))
-            (but-last (slice head-items 0 (- (len head-items) 1))))
-          {:cl-type "cons"
-            :car (cl-build-dotted but-last (list last-item))
-            :cdr tail})))))
-
-;; Read vector #(…) elements until ')'
-(define
-  cl-read-vector
-  (fn
-    (toks)
-    (let
-      ((result (cl-read-vector-items toks (list))))
-      {:form {:cl-type "vector" :elements (get result "items")} :rest (get result "rest")})))
-
-(define
-  cl-read-vector-items
-  (fn
-    (toks acc)
-    (if
-      (not toks)
-      {:items acc :rest toks}
-      (let
-        ((tok (nth toks 0)))
-        (let
-          ((type (get tok "type")))
-          (cond
-            ((= type "eof") {:items acc :rest toks})
-            ((= type "rparen") {:items acc :rest (rest toks)})
-            (:else
-              (let
-                ((item (cl-read-form toks)))
-                (cl-read-vector-items
-                  (get item "rest")
-                  (concat acc (list (get item "form"))))))))))))
-
-;; ── lambda-list parser ───────────────────────────────────────────
-;;
-;; (cl-parse-lambda-list forms) — parse a list of CL forms (already read)
-;; into a structured dict:
-;;   {:required (list sym ...)
-;;    :optional (list {:name N :default D :supplied S} ...)
-;;    :rest     nil | "SYM"
-;;    :key      (list {:name N :keyword K :default D :supplied S} ...)
-;;    :allow-other-keys false | true
-;;    :aux      (list {:name N :init I} ...)}
-;;
-;; Symbols arrive as SX strings (upcase). &-markers are strings like "&OPTIONAL".
-;; Key params: keyword is the upcase name string; caller uses it as :keyword.
-;; Supplied-p: nil when absent.
-
-(define
-  cl-parse-opt-spec
-  (fn
-    (spec)
-    (if
-      (list? spec)
-      {:name (nth spec 0)
-        :default (if (> (len spec) 1) (nth spec 1) nil)
-        :supplied (if (> (len spec) 2) (nth spec 2) nil)}
-      {:name spec :default nil :supplied nil})))
-
-(define
-  cl-parse-key-spec
-  (fn
-    (spec)
-    (if
-      (list? spec)
-      (let
-        ((first (nth spec 0)))
-        (if
-          (list? first)
-          ;; ((:keyword var) default supplied-p)
-          {:name (nth first 1)
-            :keyword (get first "name")
-            :default (if (> (len spec) 1) (nth spec 1) nil)
-            :supplied (if (> (len spec) 2) (nth spec 2) nil)}
-          ;; (var default supplied-p)
-          {:name first
-            :keyword first
-            :default (if (> (len spec) 1) (nth spec 1) nil)
-            :supplied (if (> (len spec) 2) (nth spec 2) nil)}))
-      {:name spec :keyword spec :default nil :supplied nil})))
-
-(define
-  cl-parse-aux-spec
-  (fn
-    (spec)
-    (if
-      (list? spec)
-      {:name (nth spec 0) :init (if (> (len spec) 1) (nth spec 1) nil)}
-      {:name spec :init nil})))
-
-(define
-  cl-parse-lambda-list
-  (fn
-    (forms)
-    (let
-      ((state "required")
-        (required (list))
-        (optional (list))
-        (rest-name nil)
-        (key (list))
-        (allow-other-keys false)
-        (aux (list)))
-
-      (define
-        scan
-        (fn
-          (items)
-          (when
-            (> (len items) 0)
-            (let
-              ((item (nth items 0)) (tail (rest items)))
-              (cond
-                ((= item "&OPTIONAL")
-                  (do (set! state "optional") (scan tail)))
-                ((= item "&REST")
-                  (do (set! state "rest") (scan tail)))
-                ((= item "&BODY")
-                  (do (set! state "rest") (scan tail)))
-                ((= item "&KEY")
-                  (do (set! state "key") (scan tail)))
-                ((= item "&AUX")
-                  (do (set! state "aux") (scan tail)))
-                ((= item "&ALLOW-OTHER-KEYS")
-                  (do (set! allow-other-keys true) (scan tail)))
-                ((= state "required")
-                  (do (append! required item) (scan tail)))
-                ((= state "optional")
-                  (do (append! optional (cl-parse-opt-spec item)) (scan tail)))
-                ((= state "rest")
-                  (do (set! rest-name item) (set! state "done") (scan tail)))
-                ((= state "key")
-                  (do (append! key (cl-parse-key-spec item)) (scan tail)))
-                ((= state "aux")
-                  (do (append! aux (cl-parse-aux-spec item)) (scan tail)))
-                (:else (scan tail)))))))
-
-      (scan forms)
-      {:required required
-        :optional optional
-        :rest rest-name
-        :key key
-        :allow-other-keys allow-other-keys
-        :aux aux})))
-
-;; Convenience: parse lambda list from a CL source string
-(define
-  cl-parse-lambda-list-str
-  (fn
-    (src)
-    (cl-parse-lambda-list (cl-read src))))
-
-;; ── public API ────────────────────────────────────────────────────
-
-(define
-  cl-read
-  (fn
-    (src)
-    (let
-      ((toks (cl-tokenize src)))
-      (get (cl-read-form toks) "form"))))
-
-(define
-  cl-read-all
-  (fn
-    (src)
-    (let
-      ((toks (cl-tokenize src)))
-      (define
-        loop
-        (fn
-          (toks acc)
-          (if
-            (or (not toks) (= (get (nth toks 0) "type") "eof"))
-            acc
-            (let
-              ((result (cl-read-form toks)))
-              (if
-                (get result "eof")
-                acc
-                (loop (get result "rest") (concat acc (list (get result "form")))))))))
-      (loop toks (list)))))

lib/common-lisp/reader.sx

@@ -1,381 +0,0 @@
-;; Common Lisp tokenizer
-;;
-;; Tokens: {:type T :value V :pos P}
-;;
-;; Types:
-;;   "symbol"      — FOO, PKG:SYM, PKG::SYM, T, NIL (upcase)
-;;   "keyword"     — :foo (value is upcase name without colon)
-;;   "integer"     — 42, -5, #xFF, #b1010, #o17 (string)
-;;   "float"       — 3.14, 1.0e10 (string)
-;;   "ratio"       — 1/3 (string "N/D")
-;;   "string"      — unescaped content
-;;   "char"        — single-character string
-;;   "lparen"  "rparen"  "quote"  "backquote"  "comma"  "comma-at"
-;;   "hash-quote"  — #'
-;;   "hash-paren"  — #(
-;;   "uninterned"  — #:foo (upcase name)
-;;   "dot"         — standalone . (dotted pair separator)
-;;   "eof"
-
-(define cl-make-tok (fn (type value pos) {:type type :value value :pos pos}))
-
-;; ── char ordinal table ────────────────────────────────────────────
-
-(define
-  cl-ord-table
-  (let
-    ((t (dict)) (i 0))
-    (define
-      cl-fill
-      (fn
-        ()
-        (when
-          (< i 128)
-          (do
-            (dict-set! t (char-from-code i) i)
-            (set! i (+ i 1))
-            (cl-fill)))))
-    (cl-fill)
-    t))
-
-(define cl-ord (fn (c) (or (get cl-ord-table c) 0)))
-
-;; ── character predicates ──────────────────────────────────────────
-
-(define cl-digit? (fn (c) (and (>= (cl-ord c) 48) (<= (cl-ord c) 57))))
-
-(define
-  cl-hex?
-  (fn
-    (c)
-    (or
-      (cl-digit? c)
-      (and (>= (cl-ord c) 65) (<= (cl-ord c) 70))
-      (and (>= (cl-ord c) 97) (<= (cl-ord c) 102)))))
-
-(define cl-octal? (fn (c) (and (>= (cl-ord c) 48) (<= (cl-ord c) 55))))
-
-(define cl-binary? (fn (c) (or (= c "0") (= c "1"))))
-
-(define cl-ws? (fn (c) (or (= c " ") (= c "\t") (= c "\n") (= c "\r"))))
-
-(define
-  cl-alpha?
-  (fn
-    (c)
-    (or
-      (and (>= (cl-ord c) 65) (<= (cl-ord c) 90))
-      (and (>= (cl-ord c) 97) (<= (cl-ord c) 122)))))
-
-;; Characters that end a token (whitespace + terminating macro chars)
-(define
-  cl-terminating?
-  (fn
-    (c)
-    (or
-      (cl-ws? c)
-      (= c "(")
-      (= c ")")
-      (= c "\"")
-      (= c ";")
-      (= c "`")
-      (= c ","))))
-
-;; Symbol constituent: not terminating, not reader-special
-(define
-  cl-sym-char?
-  (fn
-    (c)
-    (not
-      (or
-        (cl-terminating? c)
-        (= c "#")
-        (= c "|")
-        (= c "\\")
-        (= c "'")))))
-
-;; ── named character table ─────────────────────────────────────────
-
-(define
-  cl-named-chars
-  {:space " "
-    :newline "\n"
-    :tab "\t"
-    :return "\r"
-    :backspace (char-from-code 8)
-    :rubout (char-from-code 127)
-    :delete (char-from-code 127)
-    :escape (char-from-code 27)
-    :altmode (char-from-code 27)
-    :null (char-from-code 0)
-    :nul (char-from-code 0)
-    :page (char-from-code 12)
-    :formfeed (char-from-code 12)})
-
-;; ── main tokenizer ────────────────────────────────────────────────
-
-(define
-  cl-tokenize
-  (fn
-    (src)
-    (let
-      ((pos 0) (n (string-length src)) (toks (list)))
-
-      (define at (fn () (if (< pos n) (substring src pos (+ pos 1)) nil)))
-      (define peek1 (fn () (if (< (+ pos 1) n) (substring src (+ pos 1) (+ pos 2)) nil)))
-      (define adv (fn () (set! pos (+ pos 1))))
-
-      ;; Advance while predicate holds; return substring from start to end
-      (define
-        read-while
-        (fn
-          (pred)
-          (let
-            ((start pos))
-            (define
-              rw-loop
-              (fn
-                ()
-                (when
-                  (and (at) (pred (at)))
-                  (do (adv) (rw-loop)))))
-            (rw-loop)
-            (substring src start pos))))
-
-      (define
-        skip-line
-        (fn
-          ()
-          (when
-            (and (at) (not (= (at) "\n")))
-            (do (adv) (skip-line)))))
-
-      (define
-        skip-block
-        (fn
-          (depth)
-          (when
-            (at)
-            (cond
-              ((and (= (at) "#") (= (peek1) "|"))
-                (do (adv) (adv) (skip-block (+ depth 1))))
-              ((and (= (at) "|") (= (peek1) "#"))
-                (do
-                  (adv)
-                  (adv)
-                  (when (> depth 1) (skip-block (- depth 1)))))
-              (:else (do (adv) (skip-block depth)))))))
-
-      ;; Read string literal — called with pos just past opening "
-      (define
-        read-str
-        (fn
-          (acc)
-          (if
-            (not (at))
-            acc
-            (cond
-              ((= (at) "\"") (do (adv) acc))
-              ((= (at) "\\")
-                (do
-                  (adv)
-                  (let
-                    ((e (at)))
-                    (adv)
-                    (read-str
-                      (str
-                        acc
-                        (cond
-                          ((= e "n") "\n")
-                          ((= e "t") "\t")
-                          ((= e "r") "\r")
-                          ((= e "\"") "\"")
-                          ((= e "\\") "\\")
-                          (:else e)))))))
-              (:else
-                (let
-                  ((c (at)))
-                  (adv)
-                  (read-str (str acc c))))))))
-
-      ;; Read #\ char literal — called with pos just past the backslash
-      (define
-        read-char-lit
-        (fn
-          ()
-          (let
-            ((first (at)))
-            (adv)
-            (let
-              ((rest (if (and (at) (cl-alpha? (at))) (read-while cl-alpha?) "")))
-              (if
-                (= rest "")
-                first
-                (let
-                  ((name (downcase (str first rest))))
-                  (or (get cl-named-chars name) first)))))))
-
-      ;; Number scanner — called with pos just past first digit(s).
-      ;; acc holds what was already consumed (first digit or sign+digit).
-      (define
-        scan-num
-        (fn
-          (p acc)
-          (let
-            ((more (read-while cl-digit?)))
-            (set! acc (str acc more))
-            (cond
-              ;; ratio N/D
-              ((and (at) (= (at) "/") (peek1) (cl-digit? (peek1)))
-                (do
-                  (adv)
-                  (let
-                    ((denom (read-while cl-digit?)))
-                    {:type "ratio" :value (str acc "/" denom) :pos p})))
-              ;; float: decimal point N.M[eE]
-              ((and (at) (= (at) ".") (peek1) (cl-digit? (peek1)))
-                (do
-                  (adv)
-                  (let
-                    ((frac (read-while cl-digit?)))
-                    (set! acc (str acc "." frac))
-                    (when
-                      (and (at) (or (= (at) "e") (= (at) "E")))
-                      (do
-                        (set! acc (str acc (at)))
-                        (adv)
-                        (when
-                          (and (at) (or (= (at) "+") (= (at) "-")))
-                          (do (set! acc (str acc (at))) (adv)))
-                        (set! acc (str acc (read-while cl-digit?)))))
-                    {:type "float" :value acc :pos p})))
-              ;; float: exponent only NeE
-              ((and (at) (or (= (at) "e") (= (at) "E")))
-                (do
-                  (set! acc (str acc (at)))
-                  (adv)
-                  (when
-                    (and (at) (or (= (at) "+") (= (at) "-")))
-                    (do (set! acc (str acc (at))) (adv)))
-                  (set! acc (str acc (read-while cl-digit?)))
-                  {:type "float" :value acc :pos p}))
-              (:else {:type "integer" :value acc :pos p})))))
-
-      (define
-        read-radix
-        (fn
-          (letter p)
-          (let
-            ((pred
-                (cond
-                  ((or (= letter "x") (= letter "X")) cl-hex?)
-                  ((or (= letter "b") (= letter "B")) cl-binary?)
-                  ((or (= letter "o") (= letter "O")) cl-octal?)
-                  (:else cl-digit?))))
-            {:type "integer"
-              :value (str "#" letter (read-while pred))
-              :pos p})))
-
-      (define emit (fn (tok) (append! toks tok)))
-
-      (define
-        scan
-        (fn
-          ()
-          (when
-            (< pos n)
-            (let
-              ((c (at)) (p pos))
-              (cond
-                ((cl-ws? c) (do (adv) (scan)))
-                ((= c ";") (do (adv) (skip-line) (scan)))
-                ((= c "(") (do (adv) (emit (cl-make-tok "lparen" "(" p)) (scan)))
-                ((= c ")") (do (adv) (emit (cl-make-tok "rparen" ")" p)) (scan)))
-                ((= c "'") (do (adv) (emit (cl-make-tok "quote" "'" p)) (scan)))
-                ((= c "`") (do (adv) (emit (cl-make-tok "backquote" "`" p)) (scan)))
-                ((= c ",")
-                  (do
-                    (adv)
-                    (if
-                      (= (at) "@")
-                      (do (adv) (emit (cl-make-tok "comma-at" ",@" p)))
-                      (emit (cl-make-tok "comma" "," p)))
-                    (scan)))
-                ((= c "\"")
-                  (do
-                    (adv)
-                    (emit (cl-make-tok "string" (read-str "") p))
-                    (scan)))
-                ;; :keyword
-                ((= c ":")
-                  (do
-                    (adv)
-                    (emit (cl-make-tok "keyword" (upcase (read-while cl-sym-char?)) p))
-                    (scan)))
-                ;; dispatch macro #
-                ((= c "#")
-                  (do
-                    (adv)
-                    (let
-                      ((d (at)))
-                      (cond
-                        ((= d "'") (do (adv) (emit (cl-make-tok "hash-quote" "#'" p)) (scan)))
-                        ((= d "(") (do (adv) (emit (cl-make-tok "hash-paren" "#(" p)) (scan)))
-                        ((= d ":")
-                          (do
-                            (adv)
-                            (emit
-                              (cl-make-tok "uninterned" (upcase (read-while cl-sym-char?)) p))
-                            (scan)))
-                        ((= d "|") (do (adv) (skip-block 1) (scan)))
-                        ((= d "\\")
-                          (do (adv) (emit (cl-make-tok "char" (read-char-lit) p)) (scan)))
-                        ((or (= d "x") (= d "X"))
-                          (do (adv) (emit (read-radix d p)) (scan)))
-                        ((or (= d "b") (= d "B"))
-                          (do (adv) (emit (read-radix d p)) (scan)))
-                        ((or (= d "o") (= d "O"))
-                          (do (adv) (emit (read-radix d p)) (scan)))
-                        (:else (scan))))))
-                ;; standalone dot, float .5, or symbol starting with dots
-                ((= c ".")
-                  (do
-                    (adv)
-                    (cond
-                      ((or (not (at)) (cl-terminating? (at)))
-                        (do (emit (cl-make-tok "dot" "." p)) (scan)))
-                      ((cl-digit? (at))
-                        (do
-                          (emit
-                            (cl-make-tok "float" (str "0." (read-while cl-digit?)) p))
-                          (scan)))
-                      (:else
-                        (do
-                          (emit
-                            (cl-make-tok "symbol" (upcase (str "." (read-while cl-sym-char?))) p))
-                          (scan))))))
-                ;; sign followed by digit → number
-                ((and (or (= c "+") (= c "-")) (peek1) (cl-digit? (peek1)))
-                  (do
-                    (adv)
-                    (let
-                      ((first-d (at)))
-                      (adv)
-                      (emit (scan-num p (str c first-d))))
-                    (scan)))
-                ;; decimal digit → number
-                ((cl-digit? c)
-                  (do
-                    (adv)
-                    (emit (scan-num p c))
-                    (scan)))
-                ;; symbol constituent (includes bare +, -, etc.)
-                ((cl-sym-char? c)
-                  (do
-                    (emit (cl-make-tok "symbol" (upcase (read-while cl-sym-char?)) p))
-                    (scan)))
-                (:else (do (adv) (scan))))))))
-
-      (scan)
-      (append! toks (cl-make-tok "eof" nil n))
-      toks)))

lib/common-lisp/runtime.sx

@@ -1,724 +0,0 @@
-;; lib/common-lisp/runtime.sx — CL built-ins + condition system on SX
-;;
-;; Section 1-9:  Type predicates, arithmetic, characters, strings, gensym,
-;;               multiple values, sets, radix formatting, list utilities.
-;; Section 10:   Condition system (define-condition, signal/error/warn,
-;;               handler-bind, handler-case, restart-case, invoke-restart).
-;;
-;; Primitives used from spec:
-;;   char/char->integer/integer->char/char-upcase/char-downcase
-;;   format   gensym   rational/rational?   make-set/set-member?/etc
-;;   modulo/remainder/quotient/gcd/lcm/expt   number->string
-
-;; ---------------------------------------------------------------------------
-;; 1.  Type predicates
-;; ---------------------------------------------------------------------------
-
-(define (cl-null? x) (= x nil))
-(define (cl-consp? x) (and (list? x) (not (cl-empty? x))))
-(define (cl-listp? x) (or (cl-empty? x) (list? x)))
-(define (cl-atom? x) (not (cl-consp? x)))
-
-(define
-  (cl-numberp? x)
-  (let ((t (type-of x))) (or (= t "number") (= t "rational"))))
-
-(define cl-integerp? integer?)
-(define cl-floatp? float?)
-(define cl-rationalp? rational?)
-
-(define (cl-realp? x) (or (integer? x) (float? x) (rational? x)))
-
-(define cl-characterp? char?)
-(define cl-stringp? (fn (x) (= (type-of x) "string")))
-(define cl-symbolp? (fn (x) (= (type-of x) "symbol")))
-(define cl-keywordp? (fn (x) (= (type-of x) "keyword")))
-
-(define
-  (cl-functionp? x)
-  (let
-    ((t (type-of x)))
-    (or
-      (= t "function")
-      (= t "lambda")
-      (= t "native-fn")
-      (= t "component"))))
-
-(define cl-vectorp? vector?)
-(define cl-arrayp? vector?)
-
-;; sx_server: (rest (list x)) returns () not nil — cl-empty? handles both
-(define
-  (cl-empty? x)
-  (or (nil? x) (and (list? x) (= (len x) 0))))
-
-;; ---------------------------------------------------------------------------
-;; 2.  Arithmetic — thin aliases to spec primitives
-;; ---------------------------------------------------------------------------
-
-(define cl-mod modulo)
-(define cl-rem remainder)
-(define cl-gcd gcd)
-(define cl-lcm lcm)
-(define cl-expt expt)
-(define cl-floor floor)
-(define cl-ceiling ceil)
-(define cl-truncate truncate)
-(define cl-round round)
-(define cl-abs (fn (x) (if (< x 0) (- 0 x) x)))
-(define cl-min (fn (a b) (if (< a b) a b)))
-(define cl-max (fn (a b) (if (> a b) a b)))
-(define cl-quotient quotient)
-
-(define
-  (cl-signum x)
-  (cond
-    ((> x 0) 1)
-    ((< x 0) -1)
-    (else 0)))
-
-(define (cl-evenp? n) (= (modulo n 2) 0))
-(define (cl-oddp? n) (= (modulo n 2) 1))
-(define (cl-zerop? n) (= n 0))
-(define (cl-plusp? n) (> n 0))
-(define (cl-minusp? n) (< n 0))
-
-;; ---------------------------------------------------------------------------
-;; 3.  Character functions — alias spec char primitives + CL name mapping
-;; ---------------------------------------------------------------------------
-
-(define cl-char->integer char->integer)
-(define cl-integer->char integer->char)
-(define cl-char-upcase char-upcase)
-(define cl-char-downcase char-downcase)
-(define cl-char-code char->integer)
-(define cl-code-char integer->char)
-
-(define cl-char=? char=?)
-(define cl-char<? char<?)
-(define cl-char>? char>?)
-(define cl-char<=? char<=?)
-(define cl-char>=? char>=?)
-(define cl-char-ci=? char-ci=?)
-(define cl-char-ci<? char-ci<?)
-(define cl-char-ci>? char-ci>?)
-
-;; Inline predicates — char-alphabetic?/char-numeric? unreliable in sx_server
-(define
-  (cl-alpha-char-p c)
-  (let
-    ((n (char->integer c)))
-    (or
-      (and (>= n 65) (<= n 90))
-      (and (>= n 97) (<= n 122)))))
-
-(define
-  (cl-digit-char-p c)
-  (let ((n (char->integer c))) (and (>= n 48) (<= n 57))))
-
-(define
-  (cl-alphanumericp c)
-  (let
-    ((n (char->integer c)))
-    (or
-      (and (>= n 48) (<= n 57))
-      (and (>= n 65) (<= n 90))
-      (and (>= n 97) (<= n 122)))))
-
-(define
-  (cl-upper-case-p c)
-  (let ((n (char->integer c))) (and (>= n 65) (<= n 90))))
-
-(define
-  (cl-lower-case-p c)
-  (let ((n (char->integer c))) (and (>= n 97) (<= n 122))))
-
-;; Named character constants
-(define cl-char-space (integer->char 32))
-(define cl-char-newline (integer->char 10))
-(define cl-char-tab (integer->char 9))
-(define cl-char-backspace (integer->char 8))
-(define cl-char-return (integer->char 13))
-(define cl-char-null (integer->char 0))
-(define cl-char-escape (integer->char 27))
-(define cl-char-delete (integer->char 127))
-
-;; ---------------------------------------------------------------------------
-;; 4.  String + IO — use spec format and ports
-;; ---------------------------------------------------------------------------
-
-;; CL format: (cl-format nil "~a ~a" x y) — nil destination means return string
-(define
-  (cl-format dest template &rest args)
-  (let ((s (apply format (cons template args)))) (if (= dest nil) s s)))
-
-(define cl-write-to-string write-to-string)
-(define cl-princ-to-string display-to-string)
-
-;; CL read-from-string: parse value from a string using SX port
-(define
-  (cl-read-from-string s)
-  (let ((p (open-input-string s))) (read p)))
-
-;; String stream (output)
-(define cl-make-string-output-stream open-output-string)
-(define cl-get-output-stream-string get-output-string)
-
-;; String stream (input)
-(define cl-make-string-input-stream open-input-string)
-
-;; ---------------------------------------------------------------------------
-;; 5.  Gensym
-;; ---------------------------------------------------------------------------
-
-(define cl-gensym gensym)
-(define cl-gentemp gensym)
-
-;; ---------------------------------------------------------------------------
-;; 6.  Multiple values (CL: values / nth-value)
-;; ---------------------------------------------------------------------------
-
-(define (cl-values &rest args) {:_values true :_list args})
-
-(define
-  (cl-call-with-values producer consumer)
-  (let
-    ((mv (producer)))
-    (if
-      (and (dict? mv) (get mv :_values))
-      (apply consumer (get mv :_list))
-      (consumer mv))))
-
-(define
-  (cl-nth-value n mv)
-  (cond
-    ((and (dict? mv) (get mv :_values))
-      (let
-        ((lst (get mv :_list)))
-        (if (>= n (len lst)) nil (nth lst n))))
-    ((= n 0) mv)
-    (else nil)))
-
-;; ---------------------------------------------------------------------------
-;; 7.  Sets (CL: adjoin / member / union / intersection / set-difference)
-;; ---------------------------------------------------------------------------
-
-(define cl-make-set make-set)
-(define cl-set? set?)
-(define cl-set-add set-add!)
-(define cl-set-memberp set-member?)
-(define cl-set-remove set-remove!)
-(define cl-set-union set-union)
-(define cl-set-intersect set-intersection)
-(define cl-set-difference set-difference)
-(define cl-list->set list->set)
-(define cl-set->list set->list)
-
-;; CL: (member item list) — returns tail starting at item, or nil
-(define
-  (cl-member item lst)
-  (cond
-    ((cl-empty? lst) nil)
-    ((equal? item (first lst)) lst)
-    (else (cl-member item (rest lst)))))
-
-;; CL: (adjoin item list) — cons only if not already present
-(define (cl-adjoin item lst) (if (cl-member item lst) lst (cons item lst)))
-
-;; ---------------------------------------------------------------------------
-;; 8.  Radix formatting  (CL: (write-to-string n :base radix))
-;; ---------------------------------------------------------------------------
-
-(define (cl-integer-to-string n radix) (number->string n radix))
-
-(define (cl-string-to-integer s radix) (string->number s radix))
-
-;; CL ~R directive helpers
-(define (cl-format-binary n) (number->string n 2))
-(define (cl-format-octal n) (number->string n 8))
-(define (cl-format-hex n) (number->string n 16))
-(define (cl-format-decimal n) (number->string n 10))
-
-;; ---------------------------------------------------------------------------
-;; 9.  List utilities — cl-empty? guards against () from rest
-;; ---------------------------------------------------------------------------
-
-(define
-  (cl-last lst)
-  (cond
-    ((cl-empty? lst) nil)
-    ((cl-empty? (rest lst)) lst)
-    (else (cl-last (rest lst)))))
-
-(define
-  (cl-butlast lst)
-  (if
-    (or (cl-empty? lst) (cl-empty? (rest lst)))
-    nil
-    (cons (first lst) (cl-butlast (rest lst)))))
-
-(define
-  (cl-nthcdr n lst)
-  (if (= n 0) lst (cl-nthcdr (- n 1) (rest lst))))
-
-(define (cl-nth n lst) (first (cl-nthcdr n lst)))
-
-(define (cl-list-length lst) (len lst))
-
-(define
-  (cl-copy-list lst)
-  (if (cl-empty? lst) nil (cons (first lst) (cl-copy-list (rest lst)))))
-
-(define
-  (cl-flatten lst)
-  (cond
-    ((cl-empty? lst) nil)
-    ((list? (first lst))
-      (append (cl-flatten (first lst)) (cl-flatten (rest lst))))
-    (else (cons (first lst) (cl-flatten (rest lst))))))
-
-;; CL: (assoc key alist) — returns matching pair or nil
-(define
-  (cl-assoc key alist)
-  (cond
-    ((cl-empty? alist) nil)
-    ((equal? key (first (first alist))) (first alist))
-    (else (cl-assoc key (rest alist)))))
-
-;; CL: (rassoc val alist) — reverse assoc (match on second element)
-(define
-  (cl-rassoc val alist)
-  (cond
-    ((cl-empty? alist) nil)
-    ((equal? val (first (rest (first alist)))) (first alist))
-    (else (cl-rassoc val (rest alist)))))
-
-;; CL: (getf plist key) — property list lookup
-(define
-  (cl-getf plist key)
-  (cond
-    ((or (cl-empty? plist) (cl-empty? (rest plist))) nil)
-    ((equal? (first plist) key) (first (rest plist)))
-    (else (cl-getf (rest (rest plist)) key))))
-
-;; ---------------------------------------------------------------------------
-;; 10.  Condition system (Phase 3)
-;;
-;; Condition objects:
-;;   {:cl-type "cl-condition" :class "NAME" :slots {slot-name val ...}}
-;;
-;; The built-in handler-bind / restart-case expect LITERAL handler specs in
-;; source (they operate on the raw AST), so we implement our own handler and
-;; restart stacks as mutable SX globals.
-;; ---------------------------------------------------------------------------
-
-;; ── condition class registry ───────────────────────────────────────────────
-;;
-;; Populated at load time with all ANSI standard condition types.
-;; Also mutated by cl-define-condition.
-
-(define
-  cl-condition-classes
-  (dict
-    "condition"
-    {:parents (list) :slots (list) :name "condition"}
-    "serious-condition"
-    {:parents (list "condition") :slots (list) :name "serious-condition"}
-    "error"
-    {:parents (list "serious-condition") :slots (list) :name "error"}
-    "warning"
-    {:parents (list "condition") :slots (list) :name "warning"}
-    "simple-condition"
-    {:parents (list "condition") :slots (list "format-control" "format-arguments") :name "simple-condition"}
-    "simple-error"
-    {:parents (list "error" "simple-condition") :slots (list "format-control" "format-arguments") :name "simple-error"}
-    "simple-warning"
-    {:parents (list "warning" "simple-condition") :slots (list "format-control" "format-arguments") :name "simple-warning"}
-    "type-error"
-    {:parents (list "error") :slots (list "datum" "expected-type") :name "type-error"}
-    "arithmetic-error"
-    {:parents (list "error") :slots (list "operation" "operands") :name "arithmetic-error"}
-    "division-by-zero"
-    {:parents (list "arithmetic-error") :slots (list) :name "division-by-zero"}
-    "cell-error"
-    {:parents (list "error") :slots (list "name") :name "cell-error"}
-    "unbound-variable"
-    {:parents (list "cell-error") :slots (list) :name "unbound-variable"}
-    "undefined-function"
-    {:parents (list "cell-error") :slots (list) :name "undefined-function"}
-    "program-error"
-    {:parents (list "error") :slots (list) :name "program-error"}
-    "storage-condition"
-    {:parents (list "serious-condition") :slots (list) :name "storage-condition"}))
-
-;; ── condition predicates ───────────────────────────────────────────────────
-
-(define
-  cl-condition?
-  (fn (x) (and (dict? x) (= (get x "cl-type") "cl-condition"))))
-
-;; cl-condition-of-type? walks the class hierarchy.
-;; We capture cl-condition-classes at define time via let to avoid
-;; free-variable scoping issues at call time.
-
-(define
-  cl-condition-of-type?
-  (let
-    ((classes cl-condition-classes))
-    (fn
-      (c type-name)
-      (if
-        (not (cl-condition? c))
-        false
-        (let
-          ((class-name (get c "class")))
-          (define
-            check
-            (fn
-              (n)
-              (if
-                (= n type-name)
-                true
-                (let
-                  ((entry (get classes n)))
-                  (if
-                    (nil? entry)
-                    false
-                    (some (fn (p) (check p)) (get entry "parents")))))))
-          (check class-name))))))
-
-;; ── condition constructors ─────────────────────────────────────────────────
-
-;; cl-define-condition registers a new condition class.
-;; name:       string (condition class name)
-;; parents:    list of strings (parent class names)
-;; slot-names: list of strings
-
-(define
-  cl-define-condition
-  (fn
-    (name parents slot-names)
-    (begin (dict-set! cl-condition-classes name {:parents parents :slots slot-names :name name}) name)))
-
-;; cl-make-condition constructs a condition object.
-;; Keyword args (alternating slot-name/value pairs) populate the slots dict.
-
-(define
-  cl-make-condition
-  (fn
-    (name &rest kw-args)
-    (let
-      ((slots (dict)))
-      (define
-        fill
-        (fn
-          (args)
-          (when
-            (>= (len args) 2)
-            (begin
-              (dict-set! slots (first args) (first (rest args)))
-              (fill (rest (rest args)))))))
-      (fill kw-args)
-      {:cl-type "cl-condition" :slots slots :class name})))
-
-;; ── condition accessors ────────────────────────────────────────────────────
-
-(define
-  cl-condition-slot
-  (fn
-    (c slot-name)
-    (if (cl-condition? c) (get (get c "slots") slot-name) nil)))
-
-(define
-  cl-condition-message
-  (fn
-    (c)
-    (if
-      (not (cl-condition? c))
-      (str c)
-      (let
-        ((slots (get c "slots")))
-        (or
-          (get slots "message")
-          (get slots "format-control")
-          (str "Condition: " (get c "class")))))))
-
-(define
-  cl-simple-condition-format-control
-  (fn (c) (cl-condition-slot c "format-control")))
-
-(define
-  cl-simple-condition-format-arguments
-  (fn (c) (cl-condition-slot c "format-arguments")))
-
-(define cl-type-error-datum (fn (c) (cl-condition-slot c "datum")))
-
-(define
-  cl-type-error-expected-type
-  (fn (c) (cl-condition-slot c "expected-type")))
-
-(define
-  cl-arithmetic-error-operation
-  (fn (c) (cl-condition-slot c "operation")))
-
-(define
-  cl-arithmetic-error-operands
-  (fn (c) (cl-condition-slot c "operands")))
-
-;; ── mutable handler + restart stacks ──────────────────────────────────────
-;;
-;; Handler entry: {:type "type-name" :fn (fn (condition) result)}
-;; Restart entry: {:name "restart-name" :fn (fn (&optional arg) result) :escape k}
-;;
-;; New handlers are prepended (checked first = most recent handler wins).
-
-(define cl-handler-stack (list))
-(define cl-restart-stack (list))
-
-(define
-  cl-push-handlers
-  (fn (entries) (set! cl-handler-stack (append entries cl-handler-stack))))
-
-(define
-  cl-pop-handlers
-  (fn
-    (n)
-    (set! cl-handler-stack (slice cl-handler-stack n (len cl-handler-stack)))))
-
-(define
-  cl-push-restarts
-  (fn (entries) (set! cl-restart-stack (append entries cl-restart-stack))))
-
-(define
-  cl-pop-restarts
-  (fn
-    (n)
-    (set! cl-restart-stack (slice cl-restart-stack n (len cl-restart-stack)))))
-
-;; ── *debugger-hook* + invoke-debugger ────────────────────────────────────
-;;
-;; cl-debugger-hook: called when an error propagates with no handler.
-;; Signature: (fn (condition hook) result). The hook arg is itself
-;; (so the hook can rebind it to nil to prevent recursion).
-;; nil = use default (re-raise as host error).
-
-(define cl-debugger-hook nil)
-
-(define cl-invoke-debugger
-  (fn (c)
-    (if (nil? cl-debugger-hook)
-      (error (str "Debugger: " (cl-condition-message c)))
-      (let ((hook cl-debugger-hook))
-        (set! cl-debugger-hook nil)
-        (let ((result (hook c hook)))
-          (set! cl-debugger-hook hook)
-          result)))))
-
-;; ── *break-on-signals* ────────────────────────────────────────────────────
-;;
-;; When set to a type name string, cl-signal invokes the debugger hook
-;; before walking handlers if the condition is of that type.
-;; nil = disabled (ANSI default).
-
-(define cl-break-on-signals nil)
-
-;; ── invoke-restart-interactively ──────────────────────────────────────────
-;;
-;; Like invoke-restart but calls the restart's fn with no arguments
-;; (real CL would prompt the user for each arg via :interactive).
-
-(define cl-invoke-restart-interactively
-  (fn (name)
-    (let ((entry (cl-find-restart-entry name cl-restart-stack)))
-      (if (nil? entry)
-        (error (str "No active restart: " name))
-        (let ((restart-fn (get entry "fn"))
-              (escape     (get entry "escape")))
-          (escape (restart-fn)))))))
-
-;; ── cl-signal (non-unwinding) ─────────────────────────────────────────────
-;;
-;; Walks cl-handler-stack; for each matching entry, calls the handler fn.
-;; Handlers return normally — signal continues to the next matching handler.
-
-(define
-  cl-signal-obj
-  (fn
-    (obj stack)
-    (if
-      (empty? stack)
-      nil
-      (let
-        ((entry (first stack)))
-        (if
-          (cl-condition-of-type? obj (get entry "type"))
-          (begin ((get entry "fn") obj) (cl-signal-obj obj (rest stack)))
-          (cl-signal-obj obj (rest stack)))))))
-
-(define cl-signal
-  (fn (c)
-    (let ((obj (if (cl-condition? c)
-                 c
-                 (cl-make-condition "simple-condition"
-                   "format-control" (str c)))))
-      ;; *break-on-signals*: invoke debugger hook when type matches
-      (when (and (not (nil? cl-break-on-signals))
-                 (cl-condition-of-type? obj cl-break-on-signals))
-        (cl-invoke-debugger obj))
-      (cl-signal-obj obj cl-handler-stack))))
-
-;; ── cl-error ───────────────────────────────────────────────────────────────
-;;
-;; Signals an error. If no handler catches it, raises a host-level error.
-
-(define
-  cl-error
-  (fn
-    (c &rest args)
-    (let
-      ((obj (cond ((cl-condition? c) c) ((string? c) (cl-make-condition "simple-error" "format-control" c "format-arguments" args)) (:else (cl-make-condition "simple-error" "format-control" (str c))))))
-      (cl-signal-obj obj cl-handler-stack)
-      (cl-invoke-debugger obj))))
-
-;; ── cl-warn ────────────────────────────────────────────────────────────────
-
-(define
-  cl-warn
-  (fn
-    (c &rest args)
-    (let
-      ((obj (cond ((cl-condition? c) c) ((string? c) (cl-make-condition "simple-warning" "format-control" c "format-arguments" args)) (:else (cl-make-condition "simple-warning" "format-control" (str c))))))
-      (cl-signal-obj obj cl-handler-stack))))
-
-;; ── cl-handler-bind (non-unwinding) ───────────────────────────────────────
-;;
-;; bindings: list of (type-name handler-fn) pairs
-;; thunk:    (fn () body)
-
-(define
-  cl-handler-bind
-  (fn
-    (bindings thunk)
-    (let
-      ((entries (map (fn (b) {:fn (first (rest b)) :type (first b)}) bindings)))
-      (begin
-        (cl-push-handlers entries)
-        (let
-          ((result (thunk)))
-          (begin (cl-pop-handlers (len entries)) result))))))
-
-;; ── cl-handler-case (unwinding) ───────────────────────────────────────────
-;;
-;; thunk: (fn () body)
-;; cases: list of (type-name handler-fn) pairs
-;;
-;; Uses call/cc for the escape continuation.
-
-(define
-  cl-handler-case
-  (fn
-    (thunk &rest cases)
-    (call/cc
-      (fn
-        (escape)
-        (let
-          ((entries (map (fn (c) {:fn (fn (x) (escape ((first (rest c)) x))) :type (first c)}) cases)))
-          (begin
-            (cl-push-handlers entries)
-            (let
-              ((result (thunk)))
-              (begin (cl-pop-handlers (len entries)) result))))))))
-
-;; ── cl-restart-case ────────────────────────────────────────────────────────
-;;
-;; thunk:    (fn () body)
-;; restarts: list of (name params body-fn) triples
-;;   body-fn is (fn () val) or (fn (arg) val)
-
-(define
-  cl-restart-case
-  (fn
-    (thunk &rest restarts)
-    (call/cc
-      (fn
-        (escape)
-        (let
-          ((entries (map (fn (r) {:fn (first (rest (rest r))) :escape escape :name (first r)}) restarts)))
-          (begin
-            (cl-push-restarts entries)
-            (let
-              ((result (thunk)))
-              (begin (cl-pop-restarts (len entries)) result))))))))
-
-;; ── cl-with-simple-restart ─────────────────────────────────────────────────
-
-(define
-  cl-with-simple-restart
-  (fn
-    (name description thunk)
-    (cl-restart-case thunk (list name (list) (fn () nil)))))
-
-;; ── find-restart / invoke-restart / compute-restarts ──────────────────────
-
-(define
-  cl-find-restart-entry
-  (fn
-    (name stack)
-    (if
-      (empty? stack)
-      nil
-      (let
-        ((entry (first stack)))
-        (if
-          (= (get entry "name") name)
-          entry
-          (cl-find-restart-entry name (rest stack)))))))
-
-(define
-  cl-find-restart
-  (fn (name) (cl-find-restart-entry name cl-restart-stack)))
-
-(define
-  cl-invoke-restart
-  (fn
-    (name &rest args)
-    (let
-      ((entry (cl-find-restart-entry name cl-restart-stack)))
-      (if
-        (nil? entry)
-        (error (str "No active restart: " name))
-        (let
-          ((restart-fn (get entry "fn")) (escape (get entry "escape")))
-          (escape
-            (if (empty? args) (restart-fn) (restart-fn (first args)))))))))
-
-(define
-  cl-compute-restarts
-  (fn () (map (fn (e) (get e "name")) cl-restart-stack)))
-
-;; ── with-condition-restarts (stub — association is advisory) ──────────────
-
-(define cl-with-condition-restarts (fn (c restarts thunk) (thunk)))
-
-;; ── cl-cerror ──────────────────────────────────────────────────────────────
-;;
-;; Signals a continuable error. The "continue" restart is established;
-;; invoke-restart "continue" to proceed past the error.
-
-
-
-;; ── cl-cerror ──────────────────────────────────────────────────────────────
-;;
-;; Signals a continuable error. The "continue" restart is established;
-;; invoke-restart "continue" to proceed past the error.
-
-(define cl-cerror
-  (fn (continue-string c &rest args)
-    (let ((obj (if (cl-condition? c)
-                 c
-                 (cl-make-condition "simple-error"
-                   "format-control" (str c)
-                   "format-arguments" args))))
-      (cl-restart-case
-        (fn () (cl-signal-obj obj cl-handler-stack))
-        (list "continue" (list) (fn () nil))))))

lib/common-lisp/test.sh

@@ -1,376 +0,0 @@
-#!/usr/bin/env bash
-# lib/common-lisp/test.sh — quick smoke-test the CL runtime layer.
-# Uses sx_server.exe epoch protocol (same as lib/lua/test.sh).
-#
-# Usage:
-#   bash lib/common-lisp/test.sh
-#   bash lib/common-lisp/test.sh -v
-
-set -uo pipefail
-cd "$(git rev-parse --show-toplevel)"
-
-SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
-if [ ! -x "$SX_SERVER" ]; then
-  SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
-fi
-if [ ! -x "$SX_SERVER" ]; then
-  echo "ERROR: sx_server.exe not found. Run: cd hosts/ocaml && dune build"
-  exit 1
-fi
-
-VERBOSE="${1:-}"
-PASS=0; FAIL=0; ERRORS=""
-TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
-
-cat > "$TMPFILE" << 'EPOCHS'
-(epoch 1)
-(load "spec/stdlib.sx")
-(load "lib/common-lisp/runtime.sx")
-
-;; --- Type predicates ---
-(epoch 10)
-(eval "(cl-null? nil)")
-(epoch 11)
-(eval "(cl-null? false)")
-(epoch 12)
-(eval "(cl-consp? (list 1 2))")
-(epoch 13)
-(eval "(cl-consp? nil)")
-(epoch 14)
-(eval "(cl-listp? nil)")
-(epoch 15)
-(eval "(cl-listp? (list 1))")
-(epoch 16)
-(eval "(cl-atom? nil)")
-(epoch 17)
-(eval "(cl-atom? (list 1))")
-(epoch 18)
-(eval "(cl-integerp? 42)")
-(epoch 19)
-(eval "(cl-floatp? 3.14)")
-(epoch 20)
-(eval "(cl-characterp? (integer->char 65))")
-(epoch 21)
-(eval "(cl-stringp? \"hello\")")
-
-;; --- Arithmetic ---
-(epoch 30)
-(eval "(cl-mod 10 3)")
-(epoch 31)
-(eval "(cl-rem 10 3)")
-(epoch 32)
-(eval "(cl-quotient 10 3)")
-(epoch 33)
-(eval "(cl-gcd 12 8)")
-(epoch 34)
-(eval "(cl-lcm 4 6)")
-(epoch 35)
-(eval "(cl-abs -5)")
-(epoch 36)
-(eval "(cl-abs 5)")
-(epoch 37)
-(eval "(cl-min 2 7)")
-(epoch 38)
-(eval "(cl-max 2 7)")
-(epoch 39)
-(eval "(cl-evenp? 4)")
-(epoch 40)
-(eval "(cl-evenp? 3)")
-(epoch 41)
-(eval "(cl-oddp? 7)")
-(epoch 42)
-(eval "(cl-zerop? 0)")
-(epoch 43)
-(eval "(cl-plusp? 1)")
-(epoch 44)
-(eval "(cl-minusp? -1)")
-(epoch 45)
-(eval "(cl-signum 42)")
-(epoch 46)
-(eval "(cl-signum -7)")
-(epoch 47)
-(eval "(cl-signum 0)")
-
-;; --- Characters ---
-(epoch 50)
-(eval "(cl-char-code (integer->char 65))")
-(epoch 51)
-(eval "(char? (cl-code-char 65))")
-(epoch 52)
-(eval "(cl-char=? (integer->char 65) (integer->char 65))")
-(epoch 53)
-(eval "(cl-char<? (integer->char 65) (integer->char 90))")
-(epoch 54)
-(eval "(cl-char-code cl-char-space)")
-(epoch 55)
-(eval "(cl-char-code cl-char-newline)")
-(epoch 56)
-(eval "(cl-alpha-char-p (integer->char 65))")
-(epoch 57)
-(eval "(cl-digit-char-p (integer->char 48))")
-
-;; --- Format ---
-(epoch 60)
-(eval "(cl-format nil \"hello\")")
-(epoch 61)
-(eval "(cl-format nil \"~a\" \"world\")")
-(epoch 62)
-(eval "(cl-format nil \"~d\" 42)")
-(epoch 63)
-(eval "(cl-format nil \"~x\" 255)")
-(epoch 64)
-(eval "(cl-format nil \"x=~d y=~d\" 3 4)")
-
-;; --- Gensym ---
-(epoch 70)
-(eval "(= (type-of (cl-gensym)) \"symbol\")")
-(epoch 71)
-(eval "(not (= (cl-gensym) (cl-gensym)))")
-
-;; --- Sets ---
-(epoch 80)
-(eval "(cl-set? (cl-make-set))")
-(epoch 81)
-(eval "(let ((s (cl-make-set))) (do (cl-set-add s 1) (cl-set-memberp s 1)))")
-(epoch 82)
-(eval "(cl-set-memberp (cl-make-set) 42)")
-(epoch 83)
-(eval "(cl-set-memberp (cl-list->set (list 1 2 3)) 2)")
-
-;; --- Lists ---
-(epoch 90)
-(eval "(cl-nth 0 (list 1 2 3))")
-(epoch 91)
-(eval "(cl-nth 2 (list 1 2 3))")
-(epoch 92)
-(eval "(cl-last (list 1 2 3))")
-(epoch 93)
-(eval "(cl-butlast (list 1 2 3))")
-(epoch 94)
-(eval "(cl-nthcdr 1 (list 1 2 3))")
-(epoch 95)
-(eval "(cl-assoc \"b\" (list (list \"a\" 1) (list \"b\" 2)))")
-(epoch 96)
-(eval "(cl-assoc \"z\" (list (list \"a\" 1)))")
-(epoch 97)
-(eval "(cl-getf (list \"x\" 42 \"y\" 99) \"x\")")
-(epoch 98)
-(eval "(cl-adjoin 0 (list 1 2))")
-(epoch 99)
-(eval "(cl-adjoin 1 (list 1 2))")
-(epoch 100)
-(eval "(cl-member 2 (list 1 2 3))")
-(epoch 101)
-(eval "(cl-member 9 (list 1 2 3))")
-(epoch 102)
-(eval "(cl-flatten (list 1 (list 2 3) 4))")
-
-;; --- Radix ---
-(epoch 110)
-(eval "(cl-format-binary 10)")
-(epoch 111)
-(eval "(cl-format-octal 15)")
-(epoch 112)
-(eval "(cl-format-hex 255)")
-(epoch 113)
-(eval "(cl-format-decimal 42)")
-(epoch 114)
-(eval "(cl-integer-to-string 31 16)")
-(epoch 115)
-(eval "(cl-string-to-integer \"1f\" 16)")
-
-EPOCHS
-
-OUTPUT=$(timeout 30 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
-
-check() {
-  local epoch="$1" desc="$2" expected="$3"
-  local actual
-  # ok-len format: value appears on the line AFTER "(ok-len N length)"
-  actual=$(echo "$OUTPUT" | grep -A1 "^(ok-len $epoch " | tail -1 || true)
-  # strip any leading "(ok-len ...)" if grep -A1 returned it instead
-  if echo "$actual" | grep -q "^(ok-len"; then actual=""; fi
-  if [ -z "$actual" ]; then
-    actual=$(echo "$OUTPUT" | grep "^(ok $epoch " | head -1 || true)
-  fi
-  if [ -z "$actual" ]; then
-    actual=$(echo "$OUTPUT" | grep "^(error $epoch " | head -1 || true)
-  fi
-  [ -z "$actual" ] && actual="<no output for epoch $epoch>"
-
-  if echo "$actual" | grep -qF -- "$expected"; then
-    PASS=$((PASS+1))
-    [ "$VERBOSE" = "-v" ] && echo "  ok $desc"
-  else
-    FAIL=$((FAIL+1))
-    ERRORS+="  FAIL [$desc] (epoch $epoch) expected: $expected | actual: $actual
-"
-  fi
-}
-
-# Type predicates
-check 10  "cl-null? nil"           "true"
-check 11  "cl-null? false"         "false"
-check 12  "cl-consp? pair"         "true"
-check 13  "cl-consp? nil"          "false"
-check 14  "cl-listp? nil"          "true"
-check 15  "cl-listp? list"         "true"
-check 16  "cl-atom? nil"           "true"
-check 17  "cl-atom? pair"          "false"
-check 18  "cl-integerp?"           "true"
-check 19  "cl-floatp?"             "true"
-check 20  "cl-characterp?"         "true"
-check 21  "cl-stringp?"            "true"
-
-# Arithmetic
-check 30  "cl-mod 10 3"            "1"
-check 31  "cl-rem 10 3"            "1"
-check 32  "cl-quotient 10 3"       "3"
-check 33  "cl-gcd 12 8"            "4"
-check 34  "cl-lcm 4 6"             "12"
-check 35  "cl-abs -5"              "5"
-check 36  "cl-abs 5"               "5"
-check 37  "cl-min 2 7"             "2"
-check 38  "cl-max 2 7"             "7"
-check 39  "cl-evenp? 4"            "true"
-check 40  "cl-evenp? 3"            "false"
-check 41  "cl-oddp? 7"             "true"
-check 42  "cl-zerop? 0"            "true"
-check 43  "cl-plusp? 1"            "true"
-check 44  "cl-minusp? -1"          "true"
-check 45  "cl-signum pos"          "1"
-check 46  "cl-signum neg"          "-1"
-check 47  "cl-signum zero"         "0"
-
-# Characters
-check 50  "cl-char-code"           "65"
-check 51  "code-char returns char" "true"
-check 52  "cl-char=?"              "true"
-check 53  "cl-char<?"              "true"
-check 54  "cl-char-space code"     "32"
-check 55  "cl-char-newline code"   "10"
-check 56  "cl-alpha-char-p A"      "true"
-check 57  "cl-digit-char-p 0"      "true"
-
-# Format
-check 60  "cl-format plain"        '"hello"'
-check 61  "cl-format ~a"           '"world"'
-check 62  "cl-format ~d"           '"42"'
-check 63  "cl-format ~x"           '"ff"'
-check 64  "cl-format multi"        '"x=3 y=4"'
-
-# Gensym
-check 70  "gensym returns symbol"  "true"
-check 71  "gensyms are unique"     "true"
-
-# Sets
-check 80  "make-set is set?"       "true"
-check 81  "set-add + member"       "true"
-check 82  "member in empty"        "false"
-check 83  "list->set member"       "true"
-
-# Lists
-check 90  "cl-nth 0"               "1"
-check 91  "cl-nth 2"               "3"
-check 92  "cl-last"                "(3)"
-check 93  "cl-butlast"             "(1 2)"
-check 94  "cl-nthcdr 1"            "(2 3)"
-check 95  "cl-assoc hit"           '("b" 2)'
-check 96  "cl-assoc miss"          "nil"
-check 97  "cl-getf hit"            "42"
-check 98  "cl-adjoin new"          "(0 1 2)"
-check 99  "cl-adjoin dup"          "(1 2)"
-check 100 "cl-member hit"          "(2 3)"
-check 101 "cl-member miss"         "nil"
-check 102 "cl-flatten"             "(1 2 3 4)"
-
-# Radix
-check 110 "cl-format-binary 10"    '"1010"'
-check 111 "cl-format-octal 15"     '"17"'
-check 112 "cl-format-hex 255"      '"ff"'
-check 113 "cl-format-decimal 42"   '"42"'
-check 114 "n->s base 16"           '"1f"'
-check 115 "s->n base 16"           "31"
-
-# ── Phase 2: condition system unit tests ─────────────────────────────────────
-# Load runtime.sx then conditions.sx; query the passed/failed/failures globals.
-UNIT_FILE=$(mktemp); trap "rm -f $UNIT_FILE" EXIT
-cat > "$UNIT_FILE" << 'UNIT'
-(epoch 1)
-(load "spec/stdlib.sx")
-(epoch 2)
-(load "lib/common-lisp/runtime.sx")
-(epoch 3)
-(load "lib/common-lisp/tests/conditions.sx")
-(epoch 4)
-(eval "passed")
-(epoch 5)
-(eval "failed")
-(epoch 6)
-(eval "failures")
-UNIT
-
-UNIT_OUT=$(timeout 30 "$SX_SERVER" < "$UNIT_FILE" 2>/dev/null)
-
-# extract passed/failed counts from ok-len lines
-UNIT_PASSED=$(echo "$UNIT_OUT" | grep -A1 "^(ok-len 4 " | tail -1 || true)
-UNIT_FAILED=$(echo "$UNIT_OUT" | grep -A1 "^(ok-len 5 " | tail -1 || true)
-UNIT_ERRS=$(echo "$UNIT_OUT" | grep -A1 "^(ok-len 6 " | tail -1 || true)
-# fallback: try plain ok lines
-[ -z "$UNIT_PASSED" ] && UNIT_PASSED=$(echo "$UNIT_OUT" | grep "^(ok 4 " | awk '{print $3}' | tr -d ')' || true)
-[ -z "$UNIT_FAILED" ] && UNIT_FAILED=$(echo "$UNIT_OUT" | grep "^(ok 5 " | awk '{print $3}' | tr -d ')' || true)
-[ -z "$UNIT_PASSED" ] && UNIT_PASSED=0
-[ -z "$UNIT_FAILED" ] && UNIT_FAILED=0
-
-if [ "$UNIT_FAILED" = "0" ] && [ "$UNIT_PASSED" -gt 0 ] 2>/dev/null; then
-  PASS=$((PASS + UNIT_PASSED))
-  [ "$VERBOSE" = "-v" ] && echo "  ok condition tests ($UNIT_PASSED)"
-else
-  FAIL=$((FAIL + 1))
-  ERRORS+="  FAIL [condition tests] (${UNIT_PASSED} passed, ${UNIT_FAILED} failed) ${UNIT_ERRS}
-"
-fi
-
-# ── Phase 3: classic program tests ───────────────────────────────────────────
-run_program_suite() {
-  local prog="$1" pass_var="$2" fail_var="$3" failures_var="$4"
-  local PROG_FILE=$(mktemp)
-  printf '(epoch 1)\n(load "spec/stdlib.sx")\n(epoch 2)\n(load "lib/common-lisp/runtime.sx")\n(epoch 3)\n(load "%s")\n(epoch 4)\n(eval "%s")\n(epoch 5)\n(eval "%s")\n(epoch 6)\n(eval "%s")\n' \
-    "$prog" "$pass_var" "$fail_var" "$failures_var" > "$PROG_FILE"
-  local OUT; OUT=$(timeout 20 "$SX_SERVER" < "$PROG_FILE" 2>/dev/null)
-  rm -f "$PROG_FILE"
-  local P F
-  P=$(echo "$OUT" | grep -A1 "^(ok-len 4 " | tail -1 || true)
-  F=$(echo "$OUT" | grep -A1 "^(ok-len 5 " | tail -1 || true)
-  local ERRS; ERRS=$(echo "$OUT" | grep -A1 "^(ok-len 6 " | tail -1 || true)
-  [ -z "$P" ] && P=0; [ -z "$F" ] && F=0
-  if [ "$F" = "0" ] && [ "$P" -gt 0 ] 2>/dev/null; then
-    PASS=$((PASS + P))
-    [ "$VERBOSE" = "-v" ] && echo "  ok $prog ($P)"
-  else
-    FAIL=$((FAIL + 1))
-    ERRORS+="  FAIL [$prog] (${P} passed, ${F} failed) ${ERRS}
-"
-  fi
-}
-
-run_program_suite \
-  "lib/common-lisp/tests/programs/restart-demo.sx" \
-  "demo-passed" "demo-failed" "demo-failures"
-
-run_program_suite \
-  "lib/common-lisp/tests/programs/parse-recover.sx" \
-  "parse-passed" "parse-failed" "parse-failures"
-
-run_program_suite \
-  "lib/common-lisp/tests/programs/interactive-debugger.sx" \
-  "debugger-passed" "debugger-failed" "debugger-failures"
-
-TOTAL=$((PASS+FAIL))
-if [ $FAIL -eq 0 ]; then
-  echo "ok $PASS/$TOTAL lib/common-lisp tests passed"
-else
-  echo "FAIL $PASS/$TOTAL passed, $FAIL failed:"
-  echo "$ERRORS"
-fi
-[ $FAIL -eq 0 ]

lib/common-lisp/tests/conditions.sx

@@ -1,478 +0,0 @@
-;; lib/common-lisp/tests/conditions.sx — Phase 3 condition system tests
-;;
-;; Loaded by lib/common-lisp/test.sh after:
-;;   (load "spec/stdlib.sx")
-;;   (load "lib/common-lisp/runtime.sx")
-;;
-;; Each test resets the handler/restart stacks to ensure isolation.
-
-(define
-  reset-stacks!
-  (fn () (set! cl-handler-stack (list)) (set! cl-restart-stack (list))))
-
-;; ── helpers ────────────────────────────────────────────────────────────────
-
-(define passed 0)
-(define failed 0)
-(define failures (list))
-
-(define
-  assert-equal
-  (fn
-    (label got expected)
-    (if
-      (= got expected)
-      (set! passed (+ passed 1))
-      (begin
-        (set! failed (+ failed 1))
-        (set!
-          failures
-          (append
-            failures
-            (list
-              (str
-                "FAIL ["
-                label
-                "]: got="
-                (inspect got)
-                " expected="
-                (inspect expected)))))))))
-
-(define
-  assert-true
-  (fn
-    (label got)
-    (if
-      got
-      (set! passed (+ passed 1))
-      (begin
-        (set! failed (+ failed 1))
-        (set!
-          failures
-          (append
-            failures
-            (list
-              (str "FAIL [" label "]: expected true, got " (inspect got)))))))))
-
-(define
-  assert-nil
-  (fn
-    (label got)
-    (if
-      (nil? got)
-      (set! passed (+ passed 1))
-      (begin
-        (set! failed (+ failed 1))
-        (set!
-          failures
-          (append
-            failures
-            (list (str "FAIL [" label "]: expected nil, got " (inspect got)))))))))
-
-;; ── 1. condition predicates ────────────────────────────────────────────────
-
-(reset-stacks!)
-
-(let
-  ((c (cl-make-condition "simple-error" "format-control" "oops")))
-  (begin
-    (assert-true "cl-condition? on condition" (cl-condition? c))
-    (assert-equal "cl-condition? on string" (cl-condition? "hello") false)
-    (assert-equal "cl-condition? on number" (cl-condition? 42) false)
-    (assert-equal "cl-condition? on nil" (cl-condition? nil) false)))
-
-;; ── 2. cl-make-condition + slot access ────────────────────────────────────
-
-(reset-stacks!)
-
-(let
-  ((c (cl-make-condition "simple-error" "format-control" "msg" "format-arguments" (list 1 2))))
-  (begin
-    (assert-equal "class field" (get c "class") "simple-error")
-    (assert-equal "cl-type field" (get c "cl-type") "cl-condition")
-    (assert-equal
-      "format-control slot"
-      (cl-condition-slot c "format-control")
-      "msg")
-    (assert-equal
-      "format-arguments slot"
-      (cl-condition-slot c "format-arguments")
-      (list 1 2))
-    (assert-nil "missing slot is nil" (cl-condition-slot c "no-such-slot"))
-    (assert-equal "condition-message" (cl-condition-message c) "msg")))
-
-;; ── 3. cl-condition-of-type? — hierarchy walking ─────────────────────────
-
-(reset-stacks!)
-
-(let
-  ((se (cl-make-condition "simple-error" "format-control" "x"))
-    (w (cl-make-condition "simple-warning" "format-control" "y"))
-    (te
-      (cl-make-condition
-        "type-error"
-        "datum"
-        5
-        "expected-type"
-        "string"))
-    (dz (cl-make-condition "division-by-zero")))
-  (begin
-    (assert-true
-      "se isa simple-error"
-      (cl-condition-of-type? se "simple-error"))
-    (assert-true "se isa error" (cl-condition-of-type? se "error"))
-    (assert-true
-      "se isa serious-condition"
-      (cl-condition-of-type? se "serious-condition"))
-    (assert-true "se isa condition" (cl-condition-of-type? se "condition"))
-    (assert-equal
-      "se not isa warning"
-      (cl-condition-of-type? se "warning")
-      false)
-    (assert-true
-      "w isa simple-warning"
-      (cl-condition-of-type? w "simple-warning"))
-    (assert-true "w isa warning" (cl-condition-of-type? w "warning"))
-    (assert-true "w isa condition" (cl-condition-of-type? w "condition"))
-    (assert-equal "w not isa error" (cl-condition-of-type? w "error") false)
-    (assert-true "te isa type-error" (cl-condition-of-type? te "type-error"))
-    (assert-true "te isa error" (cl-condition-of-type? te "error"))
-    (assert-true
-      "dz isa division-by-zero"
-      (cl-condition-of-type? dz "division-by-zero"))
-    (assert-true
-      "dz isa arithmetic-error"
-      (cl-condition-of-type? dz "arithmetic-error"))
-    (assert-true "dz isa error" (cl-condition-of-type? dz "error"))
-    (assert-equal
-      "non-condition not isa anything"
-      (cl-condition-of-type? 42 "error")
-      false)))
-
-;; ── 4. cl-define-condition ────────────────────────────────────────────────
-
-(reset-stacks!)
-
-(begin
-  (cl-define-condition "my-app-error" (list "error") (list "code" "detail"))
-  (let
-    ((c (cl-make-condition "my-app-error" "code" 404 "detail" "not found")))
-    (begin
-      (assert-true "user condition: cl-condition?" (cl-condition? c))
-      (assert-true
-        "user condition isa my-app-error"
-        (cl-condition-of-type? c "my-app-error"))
-      (assert-true
-        "user condition isa error"
-        (cl-condition-of-type? c "error"))
-      (assert-true
-        "user condition isa condition"
-        (cl-condition-of-type? c "condition"))
-      (assert-equal
-        "user condition slot code"
-        (cl-condition-slot c "code")
-        404)
-      (assert-equal
-        "user condition slot detail"
-        (cl-condition-slot c "detail")
-        "not found"))))
-
-;; ── 5. cl-handler-bind (non-unwinding) ───────────────────────────────────
-
-(reset-stacks!)
-
-(let
-  ((log (list)))
-  (begin
-    (cl-handler-bind
-      (list
-        (list
-          "error"
-          (fn (c) (set! log (append log (list (cl-condition-message c)))))))
-      (fn
-        ()
-        (cl-signal (cl-make-condition "simple-error" "format-control" "oops"))))
-    (assert-equal "handler-bind: handler fired" log (list "oops"))))
-
-(reset-stacks!)
-
-;; Non-unwinding: body continues after signal
-(let
-  ((body-ran false))
-  (begin
-    (cl-handler-bind
-      (list (list "error" (fn (c) nil)))
-      (fn
-        ()
-        (cl-signal (cl-make-condition "simple-error" "format-control" "x"))
-        (set! body-ran true)))
-    (assert-true "handler-bind: body continues after signal" body-ran)))
-
-(reset-stacks!)
-
-;; Type filtering: warning handler does not fire for error
-(let
-  ((w-fired false))
-  (begin
-    (cl-handler-bind
-      (list (list "warning" (fn (c) (set! w-fired true))))
-      (fn
-        ()
-        (cl-signal (cl-make-condition "simple-error" "format-control" "e"))))
-    (assert-equal
-      "handler-bind: type filter (warning ignores error)"
-      w-fired
-      false)))
-
-(reset-stacks!)
-
-;; Multiple handlers: both matching handlers fire
-(let
-  ((log (list)))
-  (begin
-    (cl-handler-bind
-      (list
-        (list "error" (fn (c) (set! log (append log (list "e1")))))
-        (list "condition" (fn (c) (set! log (append log (list "e2"))))))
-      (fn
-        ()
-        (cl-signal (cl-make-condition "simple-error" "format-control" "x"))))
-    (assert-equal "handler-bind: both handlers fire" log (list "e1" "e2"))))
-
-(reset-stacks!)
-
-;; ── 6. cl-handler-case (unwinding) ───────────────────────────────────────
-
-;; Catches error, returns handler result
-(let
-  ((result (cl-handler-case (fn () (cl-error "boom") 99) (list "error" (fn (c) (str "caught: " (cl-condition-message c)))))))
-  (assert-equal "handler-case: catches error" result "caught: boom"))
-
-(reset-stacks!)
-
-;; Returns body result when no signal
-(let
-  ((result (cl-handler-case (fn () 42) (list "error" (fn (c) -1)))))
-  (assert-equal "handler-case: body result" result 42))
-
-(reset-stacks!)
-
-;; Only first matching handler runs (unwinding)
-(let
-  ((result (cl-handler-case (fn () (cl-error "x")) (list "simple-error" (fn (c) "simple")) (list "error" (fn (c) "error")))))
-  (assert-equal "handler-case: most specific wins" result "simple"))
-
-(reset-stacks!)
-
-;; ── 7. cl-warn ────────────────────────────────────────────────────────────
-
-(let
-  ((warned false))
-  (begin
-    (cl-handler-bind
-      (list (list "warning" (fn (c) (set! warned true))))
-      (fn () (cl-warn "be careful")))
-    (assert-true "cl-warn: fires warning handler" warned)))
-
-(reset-stacks!)
-
-;; Warn with condition object
-(let
-  ((msg ""))
-  (begin
-    (cl-handler-bind
-      (list (list "warning" (fn (c) (set! msg (cl-condition-message c)))))
-      (fn
-        ()
-        (cl-warn
-          (cl-make-condition "simple-warning" "format-control" "take care"))))
-    (assert-equal "cl-warn: condition object" msg "take care")))
-
-(reset-stacks!)
-
-;; ── 8. cl-restart-case + cl-invoke-restart ───────────────────────────────
-
-;; Basic restart invocation
-(let
-  ((result (cl-restart-case (fn () (cl-invoke-restart "use-zero")) (list "use-zero" (list) (fn () 0)))))
-  (assert-equal "restart-case: invoke-restart use-zero" result 0))
-
-(reset-stacks!)
-
-;; Restart with argument
-(let
-  ((result (cl-restart-case (fn () (cl-invoke-restart "use-value" 77)) (list "use-value" (list "v") (fn (v) v)))))
-  (assert-equal "restart-case: invoke-restart with arg" result 77))
-
-(reset-stacks!)
-
-;; Body returns normally when restart not invoked
-(let
-  ((result (cl-restart-case (fn () 42) (list "never-used" (list) (fn () -1)))))
-  (assert-equal "restart-case: body result" result 42))
-
-(reset-stacks!)
-
-;; ── 9. cl-with-simple-restart ─────────────────────────────────────────────
-
-(let
-  ((result (cl-with-simple-restart "skip" "Skip this step" (fn () (cl-invoke-restart "skip") 99))))
-  (assert-nil "with-simple-restart: invoke returns nil" result))
-
-(reset-stacks!)
-
-;; ── 10. cl-find-restart ───────────────────────────────────────────────────
-
-(let
-  ((found (cl-restart-case (fn () (cl-find-restart "retry")) (list "retry" (list) (fn () nil)))))
-  (assert-true "find-restart: finds active restart" (not (nil? found))))
-
-(reset-stacks!)
-
-(let
-  ((not-found (cl-restart-case (fn () (cl-find-restart "nonexistent")) (list "retry" (list) (fn () nil)))))
-  (assert-nil "find-restart: nil for inactive restart" not-found))
-
-(reset-stacks!)
-
-;; ── 11. cl-compute-restarts ───────────────────────────────────────────────
-
-(let
-  ((names (cl-restart-case (fn () (cl-restart-case (fn () (cl-compute-restarts)) (list "inner" (list) (fn () nil)))) (list "outer" (list) (fn () nil)))))
-  (assert-equal
-    "compute-restarts: both restarts"
-    names
-    (list "inner" "outer")))
-
-(reset-stacks!)
-
-;; ── 12. handler-bind + restart-case interop ───────────────────────────────
-
-;; Classic CL pattern: error handler invokes a restart
-(let
-  ((result (cl-restart-case (fn () (cl-handler-bind (list (list "error" (fn (c) (cl-invoke-restart "use-zero")))) (fn () (cl-error "divide by zero")))) (list "use-zero" (list) (fn () 0)))))
-  (assert-equal "interop: handler invokes restart" result 0))
-
-(reset-stacks!)
-
-;; ── 13. cl-cerror ─────────────────────────────────────────────────────────
-
-;; When "continue" restart is invoked, cerror returns nil
-(let
-  ((result (cl-restart-case (fn () (cl-cerror "continue anyway" "something bad") 42) (list "continue" (list) (fn () "resumed")))))
-  (assert-true
-    "cerror: returns"
-    (or (nil? result) (= result 42) (= result "resumed"))))
-
-(reset-stacks!)
-
-;; ── 14. slot accessor helpers ─────────────────────────────────────────────
-
-(let
-  ((c (cl-make-condition "simple-error" "format-control" "msg" "format-arguments" (list 1 2))))
-  (begin
-    (assert-equal
-      "simple-condition-format-control"
-      (cl-simple-condition-format-control c)
-      "msg")
-    (assert-equal
-      "simple-condition-format-arguments"
-      (cl-simple-condition-format-arguments c)
-      (list 1 2))))
-
-(let
-  ((c (cl-make-condition "type-error" "datum" 42 "expected-type" "string")))
-  (begin
-    (assert-equal "type-error-datum" (cl-type-error-datum c) 42)
-    (assert-equal
-      "type-error-expected-type"
-      (cl-type-error-expected-type c)
-      "string")))
-
-(let
-  ((c (cl-make-condition "arithmetic-error" "operation" "/" "operands" (list 1 0))))
-  (begin
-    (assert-equal
-      "arithmetic-error-operation"
-      (cl-arithmetic-error-operation c)
-      "/")
-    (assert-equal
-      "arithmetic-error-operands"
-      (cl-arithmetic-error-operands c)
-      (list 1 0))))
-
-
-;; ── 15. *debugger-hook* ───────────────────────────────────────────────────
-
-(reset-stacks!)
-
-(let ((received nil))
-  (begin
-    (set! cl-debugger-hook
-      (fn (c h)
-        (set! received (cl-condition-message c))
-        (cl-invoke-restart "escape")))
-    (cl-restart-case
-      (fn () (cl-error "debugger test"))
-      (list "escape" (list) (fn () nil)))
-    (set! cl-debugger-hook nil)
-    (assert-equal "debugger-hook receives condition"  received  "debugger test")))
-
-(reset-stacks!)
-
-;; ── 16. *break-on-signals* ────────────────────────────────────────────────
-
-(reset-stacks!)
-
-(let ((triggered false))
-  (begin
-    (set! cl-break-on-signals "error")
-    (set! cl-debugger-hook
-      (fn (c h)
-        (set! triggered true)
-        (cl-invoke-restart "abort")))
-    (cl-restart-case
-      (fn ()
-        (cl-signal (cl-make-condition "simple-error" "format-control" "x")))
-      (list "abort" (list) (fn () nil)))
-    (set! cl-break-on-signals nil)
-    (set! cl-debugger-hook nil)
-    (assert-true "break-on-signals fires hook"  triggered)))
-
-(reset-stacks!)
-
-;; break-on-signals: non-matching type does NOT fire hook
-(let ((triggered false))
-  (begin
-    (set! cl-break-on-signals "error")
-    (set! cl-debugger-hook
-      (fn (c h) (set! triggered true) nil))
-    (cl-handler-bind
-      (list (list "warning" (fn (c) nil)))
-      (fn ()
-        (cl-signal (cl-make-condition "simple-warning" "format-control" "w"))))
-    (set! cl-break-on-signals nil)
-    (set! cl-debugger-hook nil)
-    (assert-equal "break-on-signals: type mismatch not triggered"  triggered  false)))
-
-(reset-stacks!)
-
-;; ── 17. cl-invoke-restart-interactively ──────────────────────────────────
-
-(let ((result
-        (cl-restart-case
-          (fn () (cl-invoke-restart-interactively "use-default"))
-          (list "use-default" (list) (fn () 99)))))
-  (assert-equal "invoke-restart-interactively: returns restart value"  result  99))
-
-(reset-stacks!)
-
-;; ── summary ────────────────────────────────────────────────────────────────
-
-(if
-  (= failed 0)
-  (print (str "ok " passed "/" (+ passed failed) " condition tests passed"))
-  (begin
-    (for-each (fn (f) (print f)) failures)
-    (print
-      (str "FAIL " passed "/" (+ passed failed) " passed, " failed " failed"))))

lib/common-lisp/tests/eval.sx

@@ -1,438 +0,0 @@
-;; CL evaluator tests
-
-(define cl-test-pass 0)
-(define cl-test-fail 0)
-(define cl-test-fails (list))
-
-(define
-  cl-deep=
-  (fn
-    (a b)
-    (cond
-      ((= a b) true)
-      ((and (dict? a) (dict? b))
-        (let
-          ((ak (keys a)) (bk (keys b)))
-          (if
-            (not (= (len ak) (len bk)))
-            false
-            (every?
-              (fn (k) (and (has-key? b k) (cl-deep= (get a k) (get b k))))
-              ak))))
-      ((and (list? a) (list? b))
-        (if
-          (not (= (len a) (len b)))
-          false
-          (let
-            ((i 0) (ok true))
-            (define
-              chk
-              (fn
-                ()
-                (when
-                  (and ok (< i (len a)))
-                  (do
-                    (when
-                      (not (cl-deep= (nth a i) (nth b i)))
-                      (set! ok false))
-                    (set! i (+ i 1))
-                    (chk)))))
-            (chk)
-            ok)))
-      (:else false))))
-
-(define
-  cl-test
-  (fn
-    (name actual expected)
-    (if
-      (cl-deep= actual expected)
-      (set! cl-test-pass (+ cl-test-pass 1))
-      (do
-        (set! cl-test-fail (+ cl-test-fail 1))
-        (append! cl-test-fails {:name name :expected expected :actual actual})))))
-
-;; Convenience: evaluate CL string with fresh env each time
-(define ev (fn (src) (cl-eval-str src (cl-make-env))))
-(define evall (fn (src) (cl-eval-all-str src (cl-make-env))))
-
-;; ── self-evaluating literals ──────────────────────────────────────
-
-(cl-test "lit: nil" (ev "nil") nil)
-(cl-test "lit: t" (ev "t") true)
-(cl-test "lit: integer" (ev "42") 42)
-(cl-test "lit: negative" (ev "-7") -7)
-(cl-test "lit: zero" (ev "0") 0)
-(cl-test "lit: string" (ev "\"hello\"") "hello")
-(cl-test "lit: empty string" (ev "\"\"") "")
-(cl-test "lit: keyword type" (get (ev ":foo") "cl-type") "keyword")
-(cl-test "lit: keyword name" (get (ev ":foo") "name") "FOO")
-(cl-test "lit: float type" (get (ev "3.14") "cl-type") "float")
-
-;; ── QUOTE ─────────────────────────────────────────────────────────
-
-(cl-test "quote: symbol" (ev "'x") "X")
-(cl-test "quote: list" (ev "'(a b c)") (list "A" "B" "C"))
-(cl-test "quote: nil" (ev "'nil") nil)
-(cl-test "quote: integer" (ev "'42") 42)
-(cl-test "quote: nested" (ev "'(a (b c))") (list "A" (list "B" "C")))
-
-;; ── IF ────────────────────────────────────────────────────────────
-
-(cl-test "if: true branch" (ev "(if t 1 2)") 1)
-(cl-test "if: false branch" (ev "(if nil 1 2)") 2)
-(cl-test "if: no else nil" (ev "(if nil 99)") nil)
-(cl-test "if: number truthy" (ev "(if 0 'yes 'no)") "YES")
-(cl-test "if: empty string truthy" (ev "(if \"\" 'yes 'no)") "YES")
-(cl-test "if: nested" (ev "(if t (if nil 1 2) 3)") 2)
-
-;; ── PROGN ────────────────────────────────────────────────────────
-
-(cl-test "progn: single" (ev "(progn 42)") 42)
-(cl-test "progn: multiple" (ev "(progn 1 2 3)") 3)
-(cl-test "progn: nil last" (ev "(progn 1 nil)") nil)
-
-;; ── AND / OR ─────────────────────────────────────────────────────
-
-(cl-test "and: empty" (ev "(and)") true)
-(cl-test "and: all true" (ev "(and 1 2 3)") 3)
-(cl-test "and: short-circuit" (ev "(and nil 99)") nil)
-(cl-test "and: returns last" (ev "(and 1 2)") 2)
-(cl-test "or: empty" (ev "(or)") nil)
-(cl-test "or: first truthy" (ev "(or 1 2)") 1)
-(cl-test "or: all nil" (ev "(or nil nil)") nil)
-(cl-test "or: short-circuit" (ev "(or nil 42)") 42)
-
-;; ── COND ─────────────────────────────────────────────────────────
-
-(cl-test "cond: first match" (ev "(cond (t 1) (t 2))") 1)
-(cl-test "cond: second match" (ev "(cond (nil 1) (t 2))") 2)
-(cl-test "cond: no match" (ev "(cond (nil 1) (nil 2))") nil)
-(cl-test "cond: returns test value" (ev "(cond (42))") 42)
-
-;; ── WHEN / UNLESS ─────────────────────────────────────────────────
-
-(cl-test "when: true" (ev "(when t 1 2 3)") 3)
-(cl-test "when: nil" (ev "(when nil 99)") nil)
-(cl-test "unless: nil runs" (ev "(unless nil 42)") 42)
-(cl-test "unless: true skips" (ev "(unless t 99)") nil)
-
-;; ── LET ──────────────────────────────────────────────────────────
-
-(cl-test "let: empty bindings" (ev "(let () 42)") 42)
-(cl-test "let: single binding" (ev "(let ((x 5)) x)") 5)
-(cl-test "let: two bindings" (ev "(let ((x 3) (y 4)) (+ x y))") 7)
-(cl-test "let: parallel" (ev "(let ((x 1)) (let ((x 2) (y x)) y))") 1)
-(cl-test "let: nested" (ev "(let ((x 1)) (let ((y 2)) (+ x y)))") 3)
-(cl-test "let: progn body" (ev "(let ((x 5)) (+ x 1) (* x 2))") 10)
-(cl-test "let: bare name nil" (ev "(let (x) x)") nil)
-
-;; ── LET* ─────────────────────────────────────────────────────────
-
-(cl-test "let*: sequential" (ev "(let* ((x 1) (y (+ x 1))) y)") 2)
-(cl-test "let*: chain" (ev "(let* ((a 2) (b (* a 3)) (c (+ b 1))) c)") 7)
-(cl-test "let*: shadow" (ev "(let ((x 1)) (let* ((x 2) (y x)) y))") 2)
-
-;; ── SETQ / SETF ──────────────────────────────────────────────────
-
-(cl-test "setq: basic" (ev "(let ((x 0)) (setq x 5) x)") 5)
-(cl-test "setq: returns value" (ev "(let ((x 0)) (setq x 99))") 99)
-(cl-test "setf: basic" (ev "(let ((x 0)) (setf x 7) x)") 7)
-
-;; ── LAMBDA ────────────────────────────────────────────────────────
-
-(cl-test "lambda: call" (ev "((lambda (x) x) 42)") 42)
-(cl-test "lambda: multi-arg" (ev "((lambda (x y) (+ x y)) 3 4)") 7)
-(cl-test "lambda: closure" (ev "(let ((n 10)) ((lambda (x) (+ x n)) 5))") 15)
-(cl-test "lambda: rest arg"
-  (ev "((lambda (x &rest xs) (cons x xs)) 1 2 3)")
-  {:cl-type "cons" :car 1 :cdr (list 2 3)})
-(cl-test "lambda: optional no default"
-  (ev "((lambda (&optional x) x))")
-  nil)
-(cl-test "lambda: optional with arg"
-  (ev "((lambda (&optional (x 99)) x) 42)")
-  42)
-(cl-test "lambda: optional default used"
-  (ev "((lambda (&optional (x 7)) x))")
-  7)
-
-;; ── FUNCTION ─────────────────────────────────────────────────────
-
-(cl-test "function: lambda" (get (ev "(function (lambda (x) x))") "cl-type") "function")
-
-;; ── DEFUN ────────────────────────────────────────────────────────
-
-(cl-test "defun: returns name" (evall "(defun sq (x) (* x x))") "SQ")
-(cl-test "defun: call" (evall "(defun sq (x) (* x x)) (sq 5)") 25)
-(cl-test "defun: multi-arg" (evall "(defun add (x y) (+ x y)) (add 3 4)") 7)
-(cl-test "defun: recursive factorial"
-  (evall "(defun fact (n) (if (<= n 1) 1 (* n (fact (- n 1))))) (fact 5)")
-  120)
-(cl-test "defun: multiple calls"
-  (evall "(defun double (x) (* x 2)) (+ (double 3) (double 5))")
-  16)
-
-;; ── FLET ─────────────────────────────────────────────────────────
-
-(cl-test "flet: basic"
-  (ev "(flet ((double (x) (* x 2))) (double 5))")
-  10)
-(cl-test "flet: sees outer vars"
-  (ev "(let ((n 3)) (flet ((add-n (x) (+ x n))) (add-n 7)))")
-  10)
-(cl-test "flet: non-recursive"
-  (ev "(flet ((f (x) (+ x 1))) (flet ((f (x) (f (f x)))) (f 5)))")
-  7)
-
-;; ── LABELS ────────────────────────────────────────────────────────
-
-(cl-test "labels: basic"
-  (ev "(labels ((greet (x) x)) (greet 42))")
-  42)
-(cl-test "labels: recursive"
-  (ev "(labels ((count (n) (if (<= n 0) 0 (+ 1 (count (- n 1)))))) (count 5))")
-  5)
-(cl-test "labels: mutual recursion"
-  (ev "(labels
-         ((even? (n) (if (= n 0) t  (odd? (- n 1))))
-          (odd?  (n) (if (= n 0) nil   (even? (- n 1)))))
-         (list (even? 4) (odd? 3)))")
-  (list true true))
-
-;; ── THE / LOCALLY / EVAL-WHEN ────────────────────────────────────
-
-(cl-test "the: passthrough" (ev "(the integer 42)") 42)
-(cl-test "the: string" (ev "(the string \"hi\")") "hi")
-(cl-test "locally: body" (ev "(locally 1 2 3)") 3)
-(cl-test "eval-when: execute" (ev "(eval-when (:execute) 99)") 99)
-(cl-test "eval-when: no execute" (ev "(eval-when (:compile-toplevel) 99)") nil)
-
-;; ── DEFVAR / DEFPARAMETER ────────────────────────────────────────
-
-(cl-test "defvar: returns name" (evall "(defvar *x* 10)") "*X*")
-(cl-test "defparameter: sets value" (evall "(defparameter *y* 42) *y*") 42)
-(cl-test "defvar: no reinit" (evall "(defvar *z* 1) (defvar *z* 99) *z*") 1)
-
-;; ── built-in arithmetic ───────────────────────────────────────────
-
-(cl-test "arith: +" (ev "(+ 1 2 3)") 6)
-(cl-test "arith: + zero" (ev "(+)") 0)
-(cl-test "arith: -" (ev "(- 10 3 2)") 5)
-(cl-test "arith: - negate" (ev "(- 5)") -5)
-(cl-test "arith: *" (ev "(* 2 3 4)") 24)
-(cl-test "arith: * one" (ev "(*)") 1)
-(cl-test "arith: /" (ev "(/ 12 3)") 4)
-(cl-test "arith: max" (ev "(max 3 1 4 1 5)") 5)
-(cl-test "arith: min" (ev "(min 3 1 4 1 5)") 1)
-(cl-test "arith: abs neg" (ev "(abs -7)") 7)
-(cl-test "arith: abs pos" (ev "(abs 7)") 7)
-
-;; ── built-in comparisons ──────────────────────────────────────────
-
-(cl-test "cmp: = true" (ev "(= 3 3)") true)
-(cl-test "cmp: = false" (ev "(= 3 4)") nil)
-(cl-test "cmp: /=" (ev "(/= 3 4)") true)
-(cl-test "cmp: <" (ev "(< 1 2)") true)
-(cl-test "cmp: > false" (ev "(> 1 2)") nil)
-(cl-test "cmp: <=" (ev "(<= 2 2)") true)
-
-;; ── built-in predicates ───────────────────────────────────────────
-
-(cl-test "pred: null nil" (ev "(null nil)") true)
-(cl-test "pred: null non-nil" (ev "(null 5)") nil)
-(cl-test "pred: not nil" (ev "(not nil)") true)
-(cl-test "pred: not truthy" (ev "(not 5)") nil)
-(cl-test "pred: numberp" (ev "(numberp 5)") true)
-(cl-test "pred: numberp str" (ev "(numberp \"x\")") nil)
-(cl-test "pred: stringp" (ev "(stringp \"hello\")") true)
-(cl-test "pred: listp list" (ev "(listp '(1))") true)
-(cl-test "pred: listp nil" (ev "(listp nil)") true)
-(cl-test "pred: zerop" (ev "(zerop 0)") true)
-(cl-test "pred: plusp" (ev "(plusp 3)") true)
-(cl-test "pred: evenp" (ev "(evenp 4)") true)
-(cl-test "pred: oddp" (ev "(oddp 3)") true)
-
-;; ── built-in list ops ─────────────────────────────────────────────
-
-(cl-test "list: car" (ev "(car '(1 2 3))") 1)
-(cl-test "list: cdr" (ev "(cdr '(1 2 3))") (list 2 3))
-(cl-test "list: cons" (get (ev "(cons 1 2)") "car") 1)
-(cl-test "list: list fn" (ev "(list 1 2 3)") (list 1 2 3))
-(cl-test "list: length" (ev "(length '(a b c))") 3)
-(cl-test "list: length nil" (ev "(length nil)") 0)
-(cl-test "list: append" (ev "(append '(1 2) '(3 4))") (list 1 2 3 4))
-(cl-test "list: first" (ev "(first '(10 20 30))") 10)
-(cl-test "list: second" (ev "(second '(10 20 30))") 20)
-(cl-test "list: third" (ev "(third '(10 20 30))") 30)
-(cl-test "list: rest" (ev "(rest '(1 2 3))") (list 2 3))
-(cl-test "list: nth" (ev "(nth 1 '(a b c))") "B")
-(cl-test "list: reverse" (ev "(reverse '(1 2 3))") (list 3 2 1))
-
-;; ── FUNCALL / APPLY / MAPCAR ─────────────────────────────────────
-
-(cl-test "funcall: lambda"
-  (ev "(funcall (lambda (x) (* x x)) 5)")
-  25)
-(cl-test "apply: basic"
-  (ev "(apply #'+ '(1 2 3))")
-  6)
-(cl-test "apply: leading args"
-  (ev "(apply #'+ 1 2 '(3 4))")
-  10)
-(cl-test "mapcar: basic"
-  (ev "(mapcar (lambda (x) (* x 2)) '(1 2 3))")
-  (list 2 4 6))
-
-;; ── BLOCK / RETURN-FROM / RETURN ─────────────────────────────────
-
-(cl-test "block: last form value"
-  (ev "(block done 1 2 3)")
-  3)
-(cl-test "block: empty body"
-  (ev "(block done)")
-  nil)
-(cl-test "block: single form"
-  (ev "(block foo 42)")
-  42)
-(cl-test "block: return-from"
-  (ev "(block done 1 (return-from done 99) 2)")
-  99)
-(cl-test "block: return-from nil block"
-  (ev "(block nil 1 (return-from nil 42) 3)")
-  42)
-(cl-test "block: return-from no value"
-  (ev "(block done (return-from done))")
-  nil)
-(cl-test "block: nested inner return stays inner"
-  (ev "(block outer (block inner (return-from inner 1) 2) 3)")
-  3)
-(cl-test "block: nested outer return"
-  (ev "(block outer (block inner 1 2) (return-from outer 99) 3)")
-  99)
-(cl-test "return: shorthand for nil block"
-  (ev "(block nil (return 77))")
-  77)
-(cl-test "return: no value"
-  (ev "(block nil 1 (return) 2)")
-  nil)
-(cl-test "block: return-from inside let"
-  (ev "(block done (let ((x 5)) (when (> x 3) (return-from done x))) 0)")
-  5)
-(cl-test "block: return-from inside progn"
-  (ev "(block done (progn (return-from done 7) 99))")
-  7)
-(cl-test "block: return-from through function"
-  (ev "(block done (flet ((f () (return-from done 42))) (f)) nil)")
-  42)
-
-;; ── TAGBODY / GO ─────────────────────────────────────────────────
-
-(cl-test "tagbody: empty returns nil"
-  (ev "(tagbody)")
-  nil)
-(cl-test "tagbody: forms only, returns nil"
-  (ev "(let ((x 0)) (tagbody (setq x 1) (setq x 2)) x)")
-  2)
-(cl-test "tagbody: tag only, returns nil"
-  (ev "(tagbody done)")
-  nil)
-(cl-test "tagbody: go skips forms"
-  (ev "(let ((x 0)) (tagbody (go done) (setq x 99) done) x)")
-  0)
-(cl-test "tagbody: go to later tag"
-  (ev "(let ((x 0)) (tagbody start (setq x (+ x 1)) (go done) (setq x 99) done) x)")
-  1)
-(cl-test "tagbody: loop with counter"
-  (ev "(let ((n 0)) (tagbody loop (when (>= n 3) (go done)) (setq n (+ n 1)) (go loop) done) n)")
-  3)
-(cl-test "tagbody: go inside when"
-  (ev "(let ((x 0)) (tagbody (setq x 1) (when t (go done)) (setq x 99) done) x)")
-  1)
-(cl-test "tagbody: go inside progn"
-  (ev "(let ((x 0)) (tagbody (progn (setq x 1) (go done)) (setq x 99) done) x)")
-  1)
-(cl-test "tagbody: go inside let"
-  (ev "(let ((acc 0)) (tagbody (let ((y 5)) (when (> y 3) (go done))) (setq acc 99) done) acc)")
-  0)
-(cl-test "tagbody: integer tags"
-  (ev "(let ((x 0)) (tagbody (go 2) 1 (setq x 1) (go 3) 2 (setq x 2) (go 3) 3) x)")
-  2)
-(cl-test "tagbody: block-return propagates out"
-  (ev "(block done (tagbody (return-from done 42)) nil)")
-  42)
-
-;; ── UNWIND-PROTECT ───────────────────────────────────────────────
-
-(cl-test "unwind-protect: normal returns protected"
-  (ev "(unwind-protect 42 nil)")
-  42)
-(cl-test "unwind-protect: cleanup runs"
-  (ev "(let ((x 0)) (unwind-protect 1 (setq x 99)) x)")
-  99)
-(cl-test "unwind-protect: cleanup result ignored"
-  (ev "(unwind-protect 42 777)")
-  42)
-(cl-test "unwind-protect: multiple cleanup forms"
-  (ev "(let ((x 0)) (unwind-protect 1 (setq x (+ x 1)) (setq x (+ x 1))) x)")
-  2)
-(cl-test "unwind-protect: cleanup on return-from"
-  (ev "(let ((x 0)) (block done (unwind-protect (return-from done 7) (setq x 99))) x)")
-  99)
-(cl-test "unwind-protect: return-from still propagates"
-  (ev "(block done (unwind-protect (return-from done 42) nil))")
-  42)
-(cl-test "unwind-protect: cleanup on go"
-  (ev "(let ((x 0)) (tagbody (unwind-protect (go done) (setq x 1)) done) x)")
-  1)
-(cl-test "unwind-protect: nested, inner cleanup first"
-  (ev "(let ((n 0)) (unwind-protect (unwind-protect 1 (setq n (+ n 10))) (setq n (+ n 1))) n)")
-  11)
-
-;; ── VALUES / MULTIPLE-VALUE-BIND / NTH-VALUE ────────────────────
-
-(cl-test "values: single returns plain"
-  (ev "(values 42)")
-  42)
-(cl-test "values: zero returns nil"
-  (ev "(values)")
-  nil)
-(cl-test "values: multi — primary via funcall"
-  (ev "(car (list (values 1 2)))")
-  1)
-(cl-test "multiple-value-bind: basic"
-  (ev "(multiple-value-bind (a b) (values 1 2) (+ a b))")
-  3)
-(cl-test "multiple-value-bind: extra vars get nil"
-  (ev "(multiple-value-bind (a b c) (values 10 20) (list a b c))")
-  (list 10 20 nil))
-(cl-test "multiple-value-bind: extra values ignored"
-  (ev "(multiple-value-bind (a) (values 1 2 3) a)")
-  1)
-(cl-test "multiple-value-bind: single value source"
-  (ev "(multiple-value-bind (a b) 42 (list a b))")
-  (list 42 nil))
-(cl-test "nth-value: 0"
-  (ev "(nth-value 0 (values 10 20 30))")
-  10)
-(cl-test "nth-value: 1"
-  (ev "(nth-value 1 (values 10 20 30))")
-  20)
-(cl-test "nth-value: out of range"
-  (ev "(nth-value 5 (values 10 20))")
-  nil)
-(cl-test "multiple-value-call: basic"
-  (ev "(multiple-value-call #'+ (values 1 2) (values 3 4))")
-  10)
-(cl-test "multiple-value-prog1: returns first"
-  (ev "(multiple-value-prog1 1 2 3)")
-  1)
-(cl-test "multiple-value-prog1: side effects run"
-  (ev "(let ((x 0)) (multiple-value-prog1 99 (setq x 7)) x)")
-  7)
-(cl-test "values: nil primary in if"
-  (ev "(if (values nil t) 'yes 'no)")
-  "NO")
-(cl-test "values: truthy primary in if"
-  (ev "(if (values 42 nil) 'yes 'no)")
-  "YES")

lib/common-lisp/tests/lambda.sx

@@ -1,204 +0,0 @@
-;; Lambda list parser tests
-
-(define cl-test-pass 0)
-(define cl-test-fail 0)
-(define cl-test-fails (list))
-
-;; Deep structural equality for dicts and lists
-(define
-  cl-deep=
-  (fn
-    (a b)
-    (cond
-      ((= a b) true)
-      ((and (dict? a) (dict? b))
-        (let
-          ((ak (keys a)) (bk (keys b)))
-          (if
-            (not (= (len ak) (len bk)))
-            false
-            (every?
-              (fn (k) (and (has-key? b k) (cl-deep= (get a k) (get b k))))
-              ak))))
-      ((and (list? a) (list? b))
-        (if
-          (not (= (len a) (len b)))
-          false
-          (let
-            ((i 0) (ok true))
-            (define
-              chk
-              (fn
-                ()
-                (when
-                  (and ok (< i (len a)))
-                  (do
-                    (when
-                      (not (cl-deep= (nth a i) (nth b i)))
-                      (set! ok false))
-                    (set! i (+ i 1))
-                    (chk)))))
-            (chk)
-            ok)))
-      (:else false))))
-
-(define
-  cl-test
-  (fn
-    (name actual expected)
-    (if
-      (cl-deep= actual expected)
-      (set! cl-test-pass (+ cl-test-pass 1))
-      (do
-        (set! cl-test-fail (+ cl-test-fail 1))
-        (append! cl-test-fails {:name name :expected expected :actual actual})))))
-
-;; Helper: parse lambda list from string "(x y ...)"
-(define ll (fn (src) (cl-parse-lambda-list-str src)))
-(define ll-req  (fn (src) (get (ll src) "required")))
-(define ll-opt  (fn (src) (get (ll src) "optional")))
-(define ll-rest (fn (src) (get (ll src) "rest")))
-(define ll-key  (fn (src) (get (ll src) "key")))
-(define ll-aok  (fn (src) (get (ll src) "allow-other-keys")))
-(define ll-aux  (fn (src) (get (ll src) "aux")))
-
-;; ── required parameters ───────────────────────────────────────────
-
-(cl-test "required: empty" (ll-req "()") (list))
-(cl-test "required: one" (ll-req "(x)") (list "X"))
-(cl-test "required: two" (ll-req "(x y)") (list "X" "Y"))
-(cl-test "required: three" (ll-req "(a b c)") (list "A" "B" "C"))
-(cl-test "required: upcased" (ll-req "(foo bar)") (list "FOO" "BAR"))
-
-;; ── &optional ─────────────────────────────────────────────────────
-
-(cl-test "optional: none" (ll-opt "(x)") (list))
-
-(cl-test
-  "optional: bare symbol"
-  (ll-opt "(x &optional z)")
-  (list {:name "Z" :default nil :supplied nil}))
-
-(cl-test
-  "optional: with default"
-  (ll-opt "(x &optional (z 0))")
-  (list {:name "Z" :default 0 :supplied nil}))
-
-(cl-test
-  "optional: with supplied-p"
-  (ll-opt "(x &optional (z 0 z-p))")
-  (list {:name "Z" :default 0 :supplied "Z-P"}))
-
-(cl-test
-  "optional: two params"
-  (ll-opt "(&optional a (b 1))")
-  (list {:name "A" :default nil :supplied nil} {:name "B" :default 1 :supplied nil}))
-
-(cl-test
-  "optional: string default"
-  (ll-opt "(&optional (name \"world\"))")
-  (list {:name "NAME" :default {:cl-type "string" :value "world"} :supplied nil}))
-
-;; ── &rest ─────────────────────────────────────────────────────────
-
-(cl-test "rest: none" (ll-rest "(x)") nil)
-(cl-test "rest: present" (ll-rest "(x &rest args)") "ARGS")
-(cl-test "rest: with required" (ll-rest "(a b &rest tail)") "TAIL")
-
-;; &body is an alias for &rest
-(cl-test "body: alias for rest" (ll-rest "(&body forms)") "FORMS")
-
-;; rest doesn't consume required params
-(cl-test "rest: required still there" (ll-req "(a b &rest rest)") (list "A" "B"))
-
-;; ── &key ──────────────────────────────────────────────────────────
-
-(cl-test "key: none" (ll-key "(x)") (list))
-
-(cl-test
-  "key: bare symbol"
-  (ll-key "(&key x)")
-  (list {:name "X" :keyword "X" :default nil :supplied nil}))
-
-(cl-test
-  "key: with default"
-  (ll-key "(&key (x 42))")
-  (list {:name "X" :keyword "X" :default 42 :supplied nil}))
-
-(cl-test
-  "key: with supplied-p"
-  (ll-key "(&key (x 42 x-p))")
-  (list {:name "X" :keyword "X" :default 42 :supplied "X-P"}))
-
-(cl-test
-  "key: two params"
-  (ll-key "(&key a b)")
-  (list
-    {:name "A" :keyword "A" :default nil :supplied nil}
-    {:name "B" :keyword "B" :default nil :supplied nil}))
-
-;; ── &allow-other-keys ─────────────────────────────────────────────
-
-(cl-test "aok: absent" (ll-aok "(x)") false)
-(cl-test "aok: present" (ll-aok "(&key x &allow-other-keys)") true)
-
-;; ── &aux ──────────────────────────────────────────────────────────
-
-(cl-test "aux: none" (ll-aux "(x)") (list))
-
-(cl-test
-  "aux: bare symbol"
-  (ll-aux "(&aux temp)")
-  (list {:name "TEMP" :init nil}))
-
-(cl-test
-  "aux: with init"
-  (ll-aux "(&aux (count 0))")
-  (list {:name "COUNT" :init 0}))
-
-(cl-test
-  "aux: two vars"
-  (ll-aux "(&aux a (b 1))")
-  (list {:name "A" :init nil} {:name "B" :init 1}))
-
-;; ── combined ──────────────────────────────────────────────────────
-
-(cl-test
-  "combined: full lambda list"
-  (let
-    ((parsed (ll "(x y &optional (z 0 z-p) &rest args &key a (b nil b-p) &aux temp)")))
-    (list
-      (get parsed "required")
-      (get (nth (get parsed "optional") 0) "name")
-      (get (nth (get parsed "optional") 0) "default")
-      (get (nth (get parsed "optional") 0) "supplied")
-      (get parsed "rest")
-      (get (nth (get parsed "key") 0) "name")
-      (get (nth (get parsed "key") 1) "supplied")
-      (get (nth (get parsed "aux") 0) "name")))
-  (list
-    (list "X" "Y")
-    "Z"
-    0
-    "Z-P"
-    "ARGS"
-    "A"
-    "B-P"
-    "TEMP"))
-
-(cl-test
-  "combined: required only stops before &"
-  (ll-req "(a b &optional c)")
-  (list "A" "B"))
-
-(cl-test
-  "combined: required only with &key"
-  (ll-req "(x &key y)")
-  (list "X"))
-
-(cl-test
-  "combined: &rest and &key together"
-  (let
-    ((parsed (ll "(&rest args &key verbose)")))
-    (list (get parsed "rest") (get (nth (get parsed "key") 0) "name")))
-  (list "ARGS" "VERBOSE"))

lib/common-lisp/tests/parse.sx

@@ -1,160 +0,0 @@
-;; Common Lisp reader/parser tests
-
-(define cl-test-pass 0)
-(define cl-test-fail 0)
-(define cl-test-fails (list))
-
-(define
-  cl-deep=
-  (fn
-    (a b)
-    (cond
-      ((= a b) true)
-      ((and (dict? a) (dict? b))
-        (let
-          ((ak (keys a)) (bk (keys b)))
-          (if
-            (not (= (len ak) (len bk)))
-            false
-            (every?
-              (fn (k) (and (has-key? b k) (cl-deep= (get a k) (get b k))))
-              ak))))
-      ((and (list? a) (list? b))
-        (if
-          (not (= (len a) (len b)))
-          false
-          (let
-            ((i 0) (ok true))
-            (define
-              chk
-              (fn
-                ()
-                (when
-                  (and ok (< i (len a)))
-                  (do
-                    (when
-                      (not (cl-deep= (nth a i) (nth b i)))
-                      (set! ok false))
-                    (set! i (+ i 1))
-                    (chk)))))
-            (chk)
-            ok)))
-      (:else false))))
-
-(define
-  cl-test
-  (fn
-    (name actual expected)
-    (if
-      (cl-deep= actual expected)
-      (set! cl-test-pass (+ cl-test-pass 1))
-      (do
-        (set! cl-test-fail (+ cl-test-fail 1))
-        (append! cl-test-fails {:name name :expected expected :actual actual})))))
-
-;; ── atoms ─────────────────────────────────────────────────────────
-
-(cl-test "integer: 42" (cl-read "42") 42)
-(cl-test "integer: 0" (cl-read "0") 0)
-(cl-test "integer: negative" (cl-read "-5") -5)
-(cl-test "integer: positive sign" (cl-read "+3") 3)
-(cl-test "integer: hex #xFF" (cl-read "#xFF") 255)
-(cl-test "integer: hex #xAB" (cl-read "#xAB") 171)
-(cl-test "integer: binary #b1010" (cl-read "#b1010") 10)
-(cl-test "integer: octal #o17" (cl-read "#o17") 15)
-
-(cl-test "float: type" (get (cl-read "3.14") "cl-type") "float")
-(cl-test "float: value" (get (cl-read "3.14") "value") "3.14")
-(cl-test "float: neg" (get (cl-read "-2.5") "value") "-2.5")
-(cl-test "float: exp" (get (cl-read "1.0e10") "value") "1.0e10")
-
-(cl-test "ratio: type" (get (cl-read "1/3") "cl-type") "ratio")
-(cl-test "ratio: value" (get (cl-read "1/3") "value") "1/3")
-(cl-test "ratio: 22/7" (get (cl-read "22/7") "value") "22/7")
-
-(cl-test "string: basic" (cl-read "\"hello\"") {:cl-type "string" :value "hello"})
-(cl-test "string: empty" (cl-read "\"\"") {:cl-type "string" :value ""})
-(cl-test "string: with escape" (cl-read "\"a\\nb\"") {:cl-type "string" :value "a\nb"})
-
-(cl-test "symbol: foo" (cl-read "foo") "FOO")
-(cl-test "symbol: BAR" (cl-read "BAR") "BAR")
-(cl-test "symbol: pkg:sym" (cl-read "cl:car") "CL:CAR")
-(cl-test "symbol: pkg::sym" (cl-read "pkg::foo") "PKG::FOO")
-
-(cl-test "nil: symbol" (cl-read "nil") nil)
-(cl-test "nil: uppercase" (cl-read "NIL") nil)
-(cl-test "t: symbol" (cl-read "t") true)
-(cl-test "t: uppercase" (cl-read "T") true)
-
-(cl-test "keyword: type" (get (cl-read ":foo") "cl-type") "keyword")
-(cl-test "keyword: name" (get (cl-read ":foo") "name") "FOO")
-(cl-test "keyword: :test" (get (cl-read ":test") "name") "TEST")
-
-(cl-test "char: type" (get (cl-read "#\\a") "cl-type") "char")
-(cl-test "char: value" (get (cl-read "#\\a") "value") "a")
-(cl-test "char: Space" (get (cl-read "#\\Space") "value") " ")
-(cl-test "char: Newline" (get (cl-read "#\\Newline") "value") "\n")
-
-(cl-test "uninterned: type" (get (cl-read "#:foo") "cl-type") "uninterned")
-(cl-test "uninterned: name" (get (cl-read "#:foo") "name") "FOO")
-
-;; ── lists ─────────────────────────────────────────────────────────
-
-(cl-test "list: empty" (cl-read "()") (list))
-(cl-test "list: one element" (cl-read "(foo)") (list "FOO"))
-(cl-test "list: two elements" (cl-read "(foo bar)") (list "FOO" "BAR"))
-(cl-test "list: nested" (cl-read "((a b) c)") (list (list "A" "B") "C"))
-(cl-test "list: with integer" (cl-read "(+ 1 2)") (list "+" 1 2))
-(cl-test "list: with string" (cl-read "(print \"hi\")") (list "PRINT" {:cl-type "string" :value "hi"}))
-(cl-test "list: nil element" (cl-read "(a nil b)") (list "A" nil "B"))
-(cl-test "list: t element" (cl-read "(a t b)") (list "A" true "B"))
-
-;; ── dotted pairs ──────────────────────────────────────────────<E29480><E29480>──
-
-(cl-test "dotted: type" (get (cl-read "(a . b)") "cl-type") "cons")
-(cl-test "dotted: car" (get (cl-read "(a . b)") "car") "A")
-(cl-test "dotted: cdr" (get (cl-read "(a . b)") "cdr") "B")
-(cl-test "dotted: number cdr" (get (cl-read "(x . 42)") "cdr") 42)
-
-;; ── reader macros ────────────────────────────────────────────────<E29480><E29480>
-
-(cl-test "quote: form" (cl-read "'x") (list "QUOTE" "X"))
-(cl-test "quote: list" (cl-read "'(a b)") (list "QUOTE" (list "A" "B")))
-(cl-test "backquote: form" (cl-read "`x") (list "QUASIQUOTE" "X"))
-(cl-test "unquote: form" (cl-read ",x") (list "UNQUOTE" "X"))
-(cl-test "comma-at: form" (cl-read ",@x") (list "UNQUOTE-SPLICING" "X"))
-(cl-test "function: form" (cl-read "#'foo") (list "FUNCTION" "FOO"))
-
-;; ── vector ────────────────────────────────────────────────────────
-
-(cl-test "vector: type" (get (cl-read "#(1 2 3)") "cl-type") "vector")
-(cl-test "vector: elements" (get (cl-read "#(1 2 3)") "elements") (list 1 2 3))
-(cl-test "vector: empty" (get (cl-read "#()") "elements") (list))
-(cl-test "vector: mixed" (get (cl-read "#(a 1 \"s\")") "elements") (list "A" 1 {:cl-type "string" :value "s"}))
-
-;; ── cl-read-all ───────────────────────────────────────────────────
-
-(cl-test
-  "read-all: empty"
-  (cl-read-all "")
-  (list))
-
-(cl-test
-  "read-all: two forms"
-  (cl-read-all "42 foo")
-  (list 42 "FOO"))
-
-(cl-test
-  "read-all: three forms"
-  (cl-read-all "(+ 1 2) (+ 3 4) hello")
-  (list (list "+" 1 2) (list "+" 3 4) "HELLO"))
-
-(cl-test
-  "read-all: with comments"
-  (cl-read-all "; this is a comment\n42 ; inline\nfoo")
-  (list 42 "FOO"))
-
-(cl-test
-  "read-all: defun form"
-  (nth (cl-read-all "(defun square (x) (* x x))") 0)
-  (list "DEFUN" "SQUARE" (list "X") (list "*" "X" "X")))

lib/common-lisp/tests/programs/interactive-debugger.sx

@@ -1,196 +0,0 @@
-;; interactive-debugger.sx — Condition debugger using *debugger-hook*
-;;
-;; Demonstrates the classic CL debugger pattern:
-;;   - *debugger-hook* is invoked when an unhandled error reaches the top level
-;;   - The hook receives the condition and a reference to itself
-;;   - It can offer restarts interactively (here simulated with a policy fn)
-;;
-;; In real CL the debugger reads from the terminal. Here we simulate
-;; the "user input" via a policy function passed in at call time.
-;;
-;; Depends on: lib/common-lisp/runtime.sx already loaded.
-
-;; ── *debugger-hook* global ────────────────────────────────────────────────
-;;
-;; CL: when error is unhandled, invoke *debugger-hook* with (condition hook).
-;; A nil hook means use the system default (which we simulate as re-raise).
-
-(define cl-debugger-hook nil)
-
-;; ── invoke-debugger ────────────────────────────────────────────────────────
-;;
-;; Called when cl-error finds no handler. Tries cl-debugger-hook first;
-;; falls back to a simple error report.
-
-(define
-  cl-invoke-debugger
-  (fn
-    (c)
-    (if
-      (nil? cl-debugger-hook)
-      (error (str "Debugger: " (cl-condition-message c)))
-      (begin
-        (let
-          ((hook cl-debugger-hook))
-          (set! cl-debugger-hook nil)
-          (let
-            ((result (hook c hook)))
-            (set! cl-debugger-hook hook)
-            result))))))
-
-;; ── cl-error/debugger — error that routes through invoke-debugger ─────────
-
-(define
-  cl-error-with-debugger
-  (fn
-    (c &rest args)
-    (let
-      ((obj (cond ((cl-condition? c) c) ((string? c) (cl-make-condition "simple-error" "format-control" c "format-arguments" args)) (:else (cl-make-condition "simple-error" "format-control" (str c))))))
-      (cl-signal-obj obj cl-handler-stack)
-      (cl-invoke-debugger obj))))
-
-;; ── simulated debugger session ────────────────────────────────────────────
-;;
-;; A debugger hook takes (condition hook) and "reads" user commands.
-;; We simulate this with a policy function: (fn (c restarts) restart-name)
-;; that picks a restart given the condition and available restarts.
-
-(define
-  make-policy-debugger
-  (fn
-    (policy)
-    (fn
-      (c hook)
-      (let
-        ((available (cl-compute-restarts)))
-        (let
-          ((choice (policy c available)))
-          (if
-            (and choice (not (nil? (cl-find-restart choice))))
-            (cl-invoke-restart choice)
-            (error
-              (str
-                "Debugger: no restart chosen for: "
-                (cl-condition-message c)))))))))
-
-;; ── tests ─────────────────────────────────────────────────────────────────
-
-(define passed 0)
-(define failed 0)
-(define failures (list))
-
-(define
-  check
-  (fn
-    (label got expected)
-    (if
-      (= got expected)
-      (set! passed (+ passed 1))
-      (begin
-        (set! failed (+ failed 1))
-        (set!
-          failures
-          (append
-            failures
-            (list
-              (str
-                "FAIL ["
-                label
-                "]: got="
-                (inspect got)
-                " expected="
-                (inspect expected)))))))))
-
-(define
-  reset-stacks!
-  (fn
-    ()
-    (set! cl-handler-stack (list))
-    (set! cl-restart-stack (list))
-    (set! cl-debugger-hook nil)))
-
-;; Test 1: debugger hook receives condition
-(reset-stacks!)
-(let
-  ((received-msg ""))
-  (begin
-    (set!
-      cl-debugger-hook
-      (fn (c hook) (set! received-msg (cl-condition-message c)) nil))
-    (cl-restart-case
-      (fn () (cl-error-with-debugger "something broke"))
-      (list "abort" (list) (fn () nil)))
-    (check "debugger hook receives condition" received-msg "something broke")))
-
-;; Test 2: policy-driven restart selection (use-zero)
-(reset-stacks!)
-(let
-  ((result (begin (set! cl-debugger-hook (make-policy-debugger (fn (c restarts) "use-zero"))) (cl-restart-case (fn () (cl-error-with-debugger (cl-make-condition "division-by-zero")) 999) (list "use-zero" (list) (fn () 0))))))
-  (check "policy debugger: use-zero restart" result 0))
-
-;; Test 3: policy selects abort
-(reset-stacks!)
-(let
-  ((result (begin (set! cl-debugger-hook (make-policy-debugger (fn (c restarts) "abort"))) (cl-restart-case (fn () (cl-error-with-debugger "aborting error") 999) (list "abort" (list) (fn () "aborted"))))))
-  (check "policy debugger: abort restart" result "aborted"))
-
-;; Test 4: compute-restarts inside debugger hook
-(reset-stacks!)
-(let
-  ((seen-restarts (list)))
-  (begin
-    (set!
-      cl-debugger-hook
-      (fn
-        (c hook)
-        (set! seen-restarts (cl-compute-restarts))
-        (cl-invoke-restart "continue")))
-    (cl-restart-case
-      (fn () (cl-error-with-debugger "test") 42)
-      (list "continue" (list) (fn () "ok"))
-      (list "abort" (list) (fn () "no")))
-    (check
-      "debugger: compute-restarts visible"
-      (= (len seen-restarts) 2)
-      true)))
-
-;; Test 5: hook not invoked when handler catches first
-(reset-stacks!)
-(let
-  ((hook-called false)
-    (result
-      (begin
-        (set! cl-debugger-hook (fn (c hook) (set! hook-called true) nil))
-        (cl-handler-case
-          (fn () (cl-error-with-debugger "handled"))
-          (list "error" (fn (c) "handler-won"))))))
-  (check "handler wins; hook not called" hook-called false)
-  (check "handler result returned" result "handler-won"))
-
-;; Test 6: debugger-hook nil after re-raise guard
-(reset-stacks!)
-(let
-  ((hook-calls 0))
-  (begin
-    (set!
-      cl-debugger-hook
-      (fn
-        (c hook)
-        (set! hook-calls (+ hook-calls 1))
-        (if
-          (> hook-calls 1)
-          (error "infinite loop guard")
-          (cl-invoke-restart "escape"))))
-    (cl-restart-case
-      (fn () (cl-error-with-debugger "once"))
-      (list "escape" (list) (fn () nil)))
-    (check
-      "hook called exactly once (no infinite recursion)"
-      hook-calls
-      1)))
-
-;; ── summary ────────────────────────────────────────────────────────────────
-
-(define debugger-passed passed)
-(define debugger-failed failed)
-(define debugger-failures failures)

lib/common-lisp/tests/programs/parse-recover.sx

@@ -1,163 +0,0 @@
-;; parse-recover.sx — Parser with skipped-token restart
-;;
-;; Classic CL pattern: a simple token parser that signals a condition
-;; when it encounters an unexpected token. The :skip-token restart
-;; allows the parser to continue past the offending token.
-;;
-;; Depends on: lib/common-lisp/runtime.sx already loaded.
-
-;; ── condition type ─────────────────────────────────────────────────────────
-
-(cl-define-condition "parse-error" (list "error") (list "token" "position"))
-
-;; ── simple token parser ────────────────────────────────────────────────────
-;;
-;; parse-numbers: given a list of tokens (strings), parse integers.
-;; Non-integer tokens signal parse-error with two restarts:
-;;   skip-token   — skip the bad token and continue
-;;   use-zero     — use 0 in place of the bad token
-
-(define
-  parse-numbers
-  (fn
-    (tokens)
-    (define result (list))
-    (define
-      process
-      (fn
-        (toks)
-        (if
-          (empty? toks)
-          result
-          (let
-            ((tok (first toks)) (rest-toks (rest toks)))
-            (let
-              ((n (string->number tok 10)))
-              (if
-                n
-                (begin
-                  (set! result (append result (list n)))
-                  (process rest-toks))
-                (cl-restart-case
-                  (fn
-                    ()
-                    (cl-signal
-                      (cl-make-condition
-                        "parse-error"
-                        "token"
-                        tok
-                        "position"
-                        (len result)))
-                    (set! result (append result (list 0)))
-                    (process rest-toks))
-                  (list "skip-token" (list) (fn () (process rest-toks)))
-                  (list
-                    "use-zero"
-                    (list)
-                    (fn
-                      ()
-                      (begin
-                        (set! result (append result (list 0)))
-                        (process rest-toks)))))))))))
-    (process tokens)
-    result))
-
-;; ── tests ─────────────────────────────────────────────────────────────────
-
-(define passed 0)
-(define failed 0)
-(define failures (list))
-
-(define
-  check
-  (fn
-    (label got expected)
-    (if
-      (= got expected)
-      (set! passed (+ passed 1))
-      (begin
-        (set! failed (+ failed 1))
-        (set!
-          failures
-          (append
-            failures
-            (list
-              (str
-                "FAIL ["
-                label
-                "]: got="
-                (inspect got)
-                " expected="
-                (inspect expected)))))))))
-
-(define
-  reset-stacks!
-  (fn () (set! cl-handler-stack (list)) (set! cl-restart-stack (list))))
-
-;; All valid tokens
-(reset-stacks!)
-(check
-  "all valid: 1 2 3"
-  (cl-handler-bind
-    (list (list "parse-error" (fn (c) (cl-invoke-restart "skip-token"))))
-    (fn () (parse-numbers (list "1" "2" "3"))))
-  (list 1 2 3))
-
-;; Skip bad token
-(reset-stacks!)
-(check
-  "skip bad token: 1 x 3 -> (1 3)"
-  (cl-handler-bind
-    (list (list "parse-error" (fn (c) (cl-invoke-restart "skip-token"))))
-    (fn () (parse-numbers (list "1" "x" "3"))))
-  (list 1 3))
-
-;; Use zero for bad token
-(reset-stacks!)
-(check
-  "use-zero for bad: 1 x 3 -> (1 0 3)"
-  (cl-handler-bind
-    (list (list "parse-error" (fn (c) (cl-invoke-restart "use-zero"))))
-    (fn () (parse-numbers (list "1" "x" "3"))))
-  (list 1 0 3))
-
-;; Multiple bad tokens, all skipped
-(reset-stacks!)
-(check
-  "skip multiple bad: a 2 b 4 -> (2 4)"
-  (cl-handler-bind
-    (list (list "parse-error" (fn (c) (cl-invoke-restart "skip-token"))))
-    (fn () (parse-numbers (list "a" "2" "b" "4"))))
-  (list 2 4))
-
-;; handler-case: abort on first bad token
-(reset-stacks!)
-(check
-  "handler-case: abort on first bad"
-  (cl-handler-case
-    (fn () (parse-numbers (list "1" "bad" "3")))
-    (list
-      "parse-error"
-      (fn
-        (c)
-        (str
-          "parse error at position "
-          (cl-condition-slot c "position")
-          ": "
-          (cl-condition-slot c "token")))))
-  "parse error at position 1: bad")
-
-;; Verify condition type hierarchy
-(reset-stacks!)
-(check
-  "parse-error isa error"
-  (cl-condition-of-type?
-    (cl-make-condition "parse-error" "token" "x" "position" 0)
-    "error")
-  true)
-
-;; ── summary ────────────────────────────────────────────────────────────────
-
-(define parse-passed passed)
-(define parse-failed failed)
-(define parse-failures failures)

lib/common-lisp/tests/programs/restart-demo.sx

@@ -1,141 +0,0 @@
-;; restart-demo.sx — Classic CL condition system demo
-;;
-;; Demonstrates resumable exceptions via restarts.
-;; The `safe-divide` function signals a division-by-zero condition
-;; and offers two restarts:
-;;   :use-zero  — return 0 as the result
-;;   :retry     — call safe-divide again with a corrected divisor
-;;
-;; Depends on: lib/common-lisp/runtime.sx already loaded.
-
-;; ── safe-divide ────────────────────────────────────────────────────────────
-;;
-;; Divides numerator by denominator.
-;; When denominator is 0, signals division-by-zero with two restarts.
-
-(define
-  safe-divide
-  (fn
-    (n d)
-    (if
-      (= d 0)
-      (cl-restart-case
-        (fn
-          ()
-          (cl-signal
-            (cl-make-condition
-              "division-by-zero"
-              "operation"
-              "/"
-              "operands"
-              (list n d)))
-          (error "division by zero — no restart invoked"))
-        (list "use-zero" (list) (fn () 0))
-        (list "retry" (list "d") (fn (d2) (safe-divide n d2))))
-      (/ n d))))
-
-;; ── tests ─────────────────────────────────────────────────────────────────
-
-(define passed 0)
-(define failed 0)
-(define failures (list))
-
-(define
-  check
-  (fn
-    (label got expected)
-    (if
-      (= got expected)
-      (set! passed (+ passed 1))
-      (begin
-        (set! failed (+ failed 1))
-        (set!
-          failures
-          (append
-            failures
-            (list
-              (str
-                "FAIL ["
-                label
-                "]: got="
-                (inspect got)
-                " expected="
-                (inspect expected)))))))))
-
-(define
-  reset-stacks!
-  (fn () (set! cl-handler-stack (list)) (set! cl-restart-stack (list))))
-
-;; Normal division
-(reset-stacks!)
-(check "10 / 2 = 5" (safe-divide 10 2) 5)
-
-;; Invoke use-zero restart
-(reset-stacks!)
-(check
-  "10 / 0 -> use-zero"
-  (cl-handler-bind
-    (list
-      (list "division-by-zero" (fn (c) (cl-invoke-restart "use-zero"))))
-    (fn () (safe-divide 10 0)))
-  0)
-
-;; Invoke retry restart with a corrected denominator
-(reset-stacks!)
-(check
-  "10 / 0 -> retry with 2"
-  (cl-handler-bind
-    (list
-      (list
-        "division-by-zero"
-        (fn (c) (cl-invoke-restart "retry" 2))))
-    (fn () (safe-divide 10 0)))
-  5)
-
-;; Nested calls: outer handles the inner divide-by-zero
-(reset-stacks!)
-(check
-  "nested: 20 / (0->4) = 5"
-  (cl-handler-bind
-    (list
-      (list
-        "division-by-zero"
-        (fn (c) (cl-invoke-restart "retry" 4))))
-    (fn () (let ((r1 (safe-divide 20 0))) r1)))
-  5)
-
-;; handler-case — unwinding version
-(reset-stacks!)
-(check
-  "handler-case: catches division-by-zero"
-  (cl-handler-case
-    (fn () (safe-divide 9 0))
-    (list "division-by-zero" (fn (c) "caught!")))
-  "caught!")
-
-;; Verify use-zero is idempotent (two uses)
-(reset-stacks!)
-(check
-  "two use-zero invocations"
-  (cl-handler-bind
-    (list
-      (list "division-by-zero" (fn (c) (cl-invoke-restart "use-zero"))))
-    (fn
-      ()
-      (+
-        (safe-divide 10 0)
-        (safe-divide 3 0))))
-  0)
-
-;; No restart needed for normal division
-(reset-stacks!)
-(check
-  "no restart needed for 8/4"
-  (safe-divide 8 4)
-  2)
-
-;; ── summary ────────────────────────────────────────────────────────────────
-
-(define demo-passed passed)
-(define demo-failed failed)
-(define demo-failures failures)

lib/common-lisp/tests/read.sx

@@ -1,180 +0,0 @@
-;; Common Lisp tokenizer tests
-
-(define cl-test-pass 0)
-(define cl-test-fail 0)
-(define cl-test-fails (list))
-
-(define
-  cl-test
-  (fn
-    (name actual expected)
-    (if
-      (= actual expected)
-      (set! cl-test-pass (+ cl-test-pass 1))
-      (do
-        (set! cl-test-fail (+ cl-test-fail 1))
-        (append! cl-test-fails {:name name :expected expected :actual actual})))))
-
-;; Helpers: extract types and values from token stream (drops eof)
-(define
-  cl-tok-types
-  (fn
-    (src)
-    (map
-      (fn (t) (get t "type"))
-      (filter (fn (t) (not (= (get t "type") "eof"))) (cl-tokenize src)))))
-
-(define
-  cl-tok-values
-  (fn
-    (src)
-    (map
-      (fn (t) (get t "value"))
-      (filter (fn (t) (not (= (get t "type") "eof"))) (cl-tokenize src)))))
-
-(define
-  cl-tok-first
-  (fn (src) (nth (cl-tokenize src) 0)))
-
-;; ── symbols ───────────────────────────────────────────────────────
-
-(cl-test "symbol: bare lowercase" (cl-tok-values "foo") (list "FOO"))
-(cl-test "symbol: uppercase" (cl-tok-values "BAR") (list "BAR"))
-(cl-test "symbol: mixed case folded" (cl-tok-values "FooBar") (list "FOOBAR"))
-(cl-test "symbol: with hyphen" (cl-tok-values "foo-bar") (list "FOO-BAR"))
-(cl-test "symbol: with star" (cl-tok-values "*special*") (list "*SPECIAL*"))
-(cl-test "symbol: with question" (cl-tok-values "null?") (list "NULL?"))
-(cl-test "symbol: with exclamation" (cl-tok-values "set!") (list "SET!"))
-(cl-test "symbol: plus sign alone" (cl-tok-values "+") (list "+"))
-(cl-test "symbol: minus sign alone" (cl-tok-values "-") (list "-"))
-(cl-test "symbol: type is symbol" (cl-tok-types "foo") (list "symbol"))
-
-;; ── package-qualified symbols ─────────────────────────────────────
-
-(cl-test "symbol: pkg:sym external" (cl-tok-values "cl:car") (list "CL:CAR"))
-(cl-test "symbol: pkg::sym internal" (cl-tok-values "pkg::foo") (list "PKG::FOO"))
-(cl-test "symbol: cl:car type" (cl-tok-types "cl:car") (list "symbol"))
-
-;; ── keywords ──────────────────────────────────────────────────────
-
-(cl-test "keyword: basic" (cl-tok-values ":foo") (list "FOO"))
-(cl-test "keyword: type" (cl-tok-types ":foo") (list "keyword"))
-(cl-test "keyword: upcase" (cl-tok-values ":hello-world") (list "HELLO-WORLD"))
-(cl-test "keyword: multiple" (cl-tok-types ":a :b :c") (list "keyword" "keyword" "keyword"))
-
-;; ── integers ──────────────────────────────────────────────────────
-
-(cl-test "integer: zero" (cl-tok-values "0") (list "0"))
-(cl-test "integer: positive" (cl-tok-values "42") (list "42"))
-(cl-test "integer: negative" (cl-tok-values "-5") (list "-5"))
-(cl-test "integer: positive-sign" (cl-tok-values "+3") (list "+3"))
-(cl-test "integer: type" (cl-tok-types "42") (list "integer"))
-(cl-test "integer: multi-digit" (cl-tok-values "12345678") (list "12345678"))
-
-;; ── hex, binary, octal ───────────────────────────────────────────
-
-(cl-test "hex: lowercase x" (cl-tok-values "#xFF") (list "#xFF"))
-(cl-test "hex: uppercase X" (cl-tok-values "#XFF") (list "#XFF"))
-(cl-test "hex: type" (cl-tok-types "#xFF") (list "integer"))
-(cl-test "hex: zero" (cl-tok-values "#x0") (list "#x0"))
-(cl-test "binary: #b" (cl-tok-values "#b1010") (list "#b1010"))
-(cl-test "binary: type" (cl-tok-types "#b1010") (list "integer"))
-(cl-test "octal: #o" (cl-tok-values "#o17") (list "#o17"))
-(cl-test "octal: type" (cl-tok-types "#o17") (list "integer"))
-
-;; ── floats ────────────────────────────────────────────────────────
-
-(cl-test "float: basic" (cl-tok-values "3.14") (list "3.14"))
-(cl-test "float: type" (cl-tok-types "3.14") (list "float"))
-(cl-test "float: negative" (cl-tok-values "-2.5") (list "-2.5"))
-(cl-test "float: exponent" (cl-tok-values "1.0e10") (list "1.0e10"))
-(cl-test "float: neg exponent" (cl-tok-values "1.5e-3") (list "1.5e-3"))
-(cl-test "float: leading dot" (cl-tok-values ".5") (list "0.5"))
-(cl-test "float: exp only" (cl-tok-values "1e5") (list "1e5"))
-
-;; ── ratios ────────────────────────────────────────────────────────
-
-(cl-test "ratio: 1/3" (cl-tok-values "1/3") (list "1/3"))
-(cl-test "ratio: type" (cl-tok-types "1/3") (list "ratio"))
-(cl-test "ratio: 22/7" (cl-tok-values "22/7") (list "22/7"))
-(cl-test "ratio: negative" (cl-tok-values "-1/2") (list "-1/2"))
-
-;; ── strings ───────────────────────────────────────────────────────
-
-(cl-test "string: empty" (cl-tok-values "\"\"") (list ""))
-(cl-test "string: basic" (cl-tok-values "\"hello\"") (list "hello"))
-(cl-test "string: type" (cl-tok-types "\"hello\"") (list "string"))
-(cl-test "string: with space" (cl-tok-values "\"hello world\"") (list "hello world"))
-(cl-test "string: escaped quote" (cl-tok-values "\"say \\\"hi\\\"\"") (list "say \"hi\""))
-(cl-test "string: escaped backslash" (cl-tok-values "\"a\\\\b\"") (list "a\\b"))
-(cl-test "string: newline escape" (cl-tok-values "\"a\\nb\"") (list "a\nb"))
-(cl-test "string: tab escape" (cl-tok-values "\"a\\tb\"") (list "a\tb"))
-
-;; ── characters ────────────────────────────────────────────────────
-
-(cl-test "char: lowercase a" (cl-tok-values "#\\a") (list "a"))
-(cl-test "char: uppercase A" (cl-tok-values "#\\A") (list "A"))
-(cl-test "char: digit" (cl-tok-values "#\\1") (list "1"))
-(cl-test "char: type" (cl-tok-types "#\\a") (list "char"))
-(cl-test "char: Space" (cl-tok-values "#\\Space") (list " "))
-(cl-test "char: Newline" (cl-tok-values "#\\Newline") (list "\n"))
-(cl-test "char: Tab" (cl-tok-values "#\\Tab") (list "\t"))
-(cl-test "char: Return" (cl-tok-values "#\\Return") (list "\r"))
-
-;; ── reader macros ─────────────────────────────────────────────────
-
-(cl-test "quote: type" (cl-tok-types "'x") (list "quote" "symbol"))
-(cl-test "backquote: type" (cl-tok-types "`x") (list "backquote" "symbol"))
-(cl-test "comma: type" (cl-tok-types ",x") (list "comma" "symbol"))
-(cl-test "comma-at: type" (cl-tok-types ",@x") (list "comma-at" "symbol"))
-(cl-test "hash-quote: type" (cl-tok-types "#'foo") (list "hash-quote" "symbol"))
-(cl-test "hash-paren: type" (cl-tok-types "#(1 2)") (list "hash-paren" "integer" "integer" "rparen"))
-
-;; ── uninterned ────────────────────────────────────────────────────
-
-(cl-test "uninterned: type" (cl-tok-types "#:foo") (list "uninterned"))
-(cl-test "uninterned: value upcase" (cl-tok-values "#:foo") (list "FOO"))
-(cl-test "uninterned: compound" (cl-tok-values "#:my-sym") (list "MY-SYM"))
-
-;; ── parens and structure ──────────────────────────────────────────
-
-(cl-test "paren: empty list" (cl-tok-types "()") (list "lparen" "rparen"))
-(cl-test "paren: nested" (cl-tok-types "((a))") (list "lparen" "lparen" "symbol" "rparen" "rparen"))
-(cl-test "dot: standalone" (cl-tok-types "(a . b)") (list "lparen" "symbol" "dot" "symbol" "rparen"))
-
-;; ── comments ──────────────────────────────────────────────────────
-
-(cl-test "comment: line" (cl-tok-types "; comment\nfoo") (list "symbol"))
-(cl-test "comment: inline" (cl-tok-values "foo ; bar\nbaz") (list "FOO" "BAZ"))
-(cl-test "block-comment: basic" (cl-tok-types "#| hello |# foo") (list "symbol"))
-(cl-test "block-comment: nested" (cl-tok-types "#| a #| b |# c |# x") (list "symbol"))
-
-;; ── combined ──────────────────────────────────────────────────────
-
-(cl-test
-  "combined: defun skeleton"
-  (cl-tok-types "(defun foo (x) x)")
-  (list "lparen" "symbol" "symbol" "lparen" "symbol" "rparen" "symbol" "rparen"))
-
-(cl-test
-  "combined: let form"
-  (cl-tok-types "(let ((x 1)) x)")
-  (list
-    "lparen"
-    "symbol"
-    "lparen"
-    "lparen"
-    "symbol"
-    "integer"
-    "rparen"
-    "rparen"
-    "symbol"
-    "rparen"))
-
-(cl-test
-  "combined: whitespace skip"
-  (cl-tok-values "  foo   bar   baz  ")
-  (list "FOO" "BAR" "BAZ"))
-
-(cl-test "eof: present" (get (nth (cl-tokenize "") 0) "type") "eof")
-(cl-test "eof: at end of tokens" (get (nth (cl-tokenize "x") 1) "type") "eof")

lib/erlang/bench_ring.sh

@@ -1,86 +0,0 @@
-#!/usr/bin/env bash
-# Erlang-on-SX ring benchmark.
-#
-# Spawns N processes in a ring, passes a token N hops (one full round),
-# and reports wall-clock time + throughput. Aspirational target from
-# the plan is 1M processes; current sync-scheduler architecture caps out
-# orders of magnitude lower — this script measures honestly across a
-# range of N so the result/scaling is recorded.
-#
-# Usage:
-#   bash lib/erlang/bench_ring.sh                # default ladder
-#   bash lib/erlang/bench_ring.sh 100 1000 5000  # custom Ns
-
-set -uo pipefail
-cd "$(git rev-parse --show-toplevel)"
-
-SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
-if [ ! -x "$SX_SERVER" ]; then
-  SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
-fi
-if [ ! -x "$SX_SERVER" ]; then
-  echo "ERROR: sx_server.exe not found." >&2
-  exit 1
-fi
-
-if [ "$#" -gt 0 ]; then
-  NS=("$@")
-else
-  NS=(10 100 500 1000)
-fi
-
-TMPFILE=$(mktemp)
-trap "rm -f $TMPFILE" EXIT
-
-# One-line Erlang program. Replaces __N__ with the size for each run.
-PROGRAM='Me = self(), N = __N__, Spawner = fun () -> receive {setup, Next} -> Loop = fun () -> receive {token, 0, Parent} -> Parent ! done; {token, K, Parent} -> Next ! {token, K-1, Parent}, Loop() end end, Loop() end end, BuildRing = fun (K, Acc) -> if K =:= 0 -> Acc; true -> BuildRing(K-1, [spawn(Spawner) | Acc]) end end, Pids = BuildRing(N, []), Wire = fun (Ps) -> case Ps of [P, Q | _] -> P ! {setup, Q}, Wire(tl(Ps)); [Last] -> Last ! {setup, hd(Pids)} end end, Wire(Pids), hd(Pids) ! {token, N, Me}, receive done -> done end'
-
-run_n() {
-  local n="$1"
-  local prog="${PROGRAM//__N__/$n}"
-  cat > "$TMPFILE" <<EPOCHS
-(epoch 1)
-(load "lib/erlang/tokenizer.sx")
-(load "lib/erlang/parser.sx")
-(load "lib/erlang/parser-core.sx")
-(load "lib/erlang/parser-expr.sx")
-(load "lib/erlang/parser-module.sx")
-(load "lib/erlang/transpile.sx")
-(load "lib/erlang/runtime.sx")
-(epoch 2)
-(eval "(erlang-eval-ast \"${prog//\"/\\\"}\")")
-EPOCHS
-
-  local start_s start_ns end_s end_ns elapsed_ms
-  start_s=$(date +%s)
-  start_ns=$(date +%N)
-  out=$(timeout 300 "$SX_SERVER" < "$TMPFILE" 2>&1)
-  end_s=$(date +%s)
-  end_ns=$(date +%N)
-
-  local ok="false"
-  if echo "$out" | grep -q ':name "done"'; then ok="true"; fi
-
-  # ms = (end_s - start_s)*1000 + (end_ns - start_ns)/1e6
-  elapsed_ms=$(awk -v s1="$start_s" -v n1="$start_ns" -v s2="$end_s" -v n2="$end_ns" \
-    'BEGIN { printf "%d", (s2 - s1) * 1000 + (n2 - n1) / 1000000 }')
-
-  if [ "$ok" = "true" ]; then
-    local hops_per_s
-    hops_per_s=$(awk -v n="$n" -v ms="$elapsed_ms" \
-      'BEGIN { if (ms == 0) ms = 1; printf "%.0f", n * 1000 / ms }')
-    printf "  N=%-8s  hops=%-8s  %sms  (%s hops/s)\n" "$n" "$n" "$elapsed_ms" "$hops_per_s"
-  else
-    printf "  N=%-8s  FAILED  %sms\n" "$n" "$elapsed_ms"
-  fi
-}
-
-echo "Ring benchmark — sx_server.exe (synchronous scheduler)"
-echo
-for n in "${NS[@]}"; do
-  run_n "$n"
-done
-echo
-echo "Note: 1M-process target from the plan is aspirational; the synchronous"
-echo "scheduler with shift-based suspension and dict-based env copies is not"
-echo "engineered for that scale. Numbers above are honest baselines."

lib/erlang/bench_ring_results.md

@@ -1,35 +0,0 @@
-# Ring Benchmark Results
-
-Generated by `lib/erlang/bench_ring.sh` against `sx_server.exe` on the
-synchronous Erlang-on-SX scheduler.
-
-| N (processes) | Hops | Wall-clock | Throughput |
-|---|---|---|---|
-| 10 | 10 | 907ms | 11 hops/s |
-| 50 | 50 | 2107ms | 24 hops/s |
-| 100 | 100 | 3827ms | 26 hops/s |
-| 500 | 500 | 17004ms | 29 hops/s |
-| 1000 | 1000 | 29832ms | 34 hops/s |
-
-(Each `Nm` row spawns N processes connected in a ring and passes a
-single token N hops total — i.e. the token completes one full lap.)
-
-## Status of the 1M-process target
-
-Phase 3's stretch goal in `plans/erlang-on-sx.md` is a million-process
-ring benchmark. **That target is not met** in the current synchronous
-scheduler; extrapolating from the table above, 1M hops would take
-~30 000 s. Correctness is fine — the program runs at every measured
-size — but throughput is bound by per-hop overhead.
-
-Per-hop cost is dominated by:
-- `er-env-copy` per fun clause attempt (whole-dict copy each time)
-- `call/cc` capture + `raise`/`guard` unwind on every `receive`
-- `er-q-delete-at!` rebuilds the mailbox backing list on every match
-- `dict-set!`/`dict-has?` lookups in the global processes table
-
-To reach 1M-process throughput in this architecture would need at
-least: persistent (path-copying) envs, an inline scheduler that
-doesn't call/cc on the common path (msg-already-in-mailbox), and a
-linked-list mailbox. None of those are in scope for the Phase 3
-checkbox — captured here as the floor we're starting from.

lib/erlang/conformance.sh

@@ -1,153 +0,0 @@
-#!/usr/bin/env bash
-# Erlang-on-SX conformance runner.
-#
-# Loads every erlang test suite via the epoch protocol, collects
-# pass/fail counts, and writes lib/erlang/scoreboard.json + .md.
-#
-# Usage:
-#   bash lib/erlang/conformance.sh           # run all suites
-#   bash lib/erlang/conformance.sh -v        # verbose per-suite
-
-set -uo pipefail
-cd "$(git rev-parse --show-toplevel)"
-
-SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
-if [ ! -x "$SX_SERVER" ]; then
-  SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
-fi
-if [ ! -x "$SX_SERVER" ]; then
-  echo "ERROR: sx_server.exe not found." >&2
-  exit 1
-fi
-
-VERBOSE="${1:-}"
-TMPFILE=$(mktemp)
-OUTFILE=$(mktemp)
-trap "rm -f $TMPFILE $OUTFILE" EXIT
-
-# Each suite: name | counter pass | counter total
-SUITES=(
-  "tokenize|er-test-pass|er-test-count"
-  "parse|er-parse-test-pass|er-parse-test-count"
-  "eval|er-eval-test-pass|er-eval-test-count"
-  "runtime|er-rt-test-pass|er-rt-test-count"
-  "ring|er-ring-test-pass|er-ring-test-count"
-  "ping-pong|er-pp-test-pass|er-pp-test-count"
-  "bank|er-bank-test-pass|er-bank-test-count"
-  "echo|er-echo-test-pass|er-echo-test-count"
-  "fib|er-fib-test-pass|er-fib-test-count"
-)
-
-cat > "$TMPFILE" << 'EPOCHS'
-(epoch 1)
-(load "lib/erlang/tokenizer.sx")
-(load "lib/erlang/parser.sx")
-(load "lib/erlang/parser-core.sx")
-(load "lib/erlang/parser-expr.sx")
-(load "lib/erlang/parser-module.sx")
-(load "lib/erlang/transpile.sx")
-(load "lib/erlang/runtime.sx")
-(load "lib/erlang/tests/tokenize.sx")
-(load "lib/erlang/tests/parse.sx")
-(load "lib/erlang/tests/eval.sx")
-(load "lib/erlang/tests/runtime.sx")
-(load "lib/erlang/tests/programs/ring.sx")
-(load "lib/erlang/tests/programs/ping_pong.sx")
-(load "lib/erlang/tests/programs/bank.sx")
-(load "lib/erlang/tests/programs/echo.sx")
-(load "lib/erlang/tests/programs/fib_server.sx")
-(epoch 100)
-(eval "(list er-test-pass er-test-count)")
-(epoch 101)
-(eval "(list er-parse-test-pass er-parse-test-count)")
-(epoch 102)
-(eval "(list er-eval-test-pass er-eval-test-count)")
-(epoch 103)
-(eval "(list er-rt-test-pass er-rt-test-count)")
-(epoch 104)
-(eval "(list er-ring-test-pass er-ring-test-count)")
-(epoch 105)
-(eval "(list er-pp-test-pass er-pp-test-count)")
-(epoch 106)
-(eval "(list er-bank-test-pass er-bank-test-count)")
-(epoch 107)
-(eval "(list er-echo-test-pass er-echo-test-count)")
-(epoch 108)
-(eval "(list er-fib-test-pass er-fib-test-count)")
-EPOCHS
-
-timeout 120 "$SX_SERVER" < "$TMPFILE" > "$OUTFILE" 2>&1
-
-# Parse "(N M)" from the line after each "(ok-len <epoch> ...)" marker.
-parse_pair() {
-  local epoch="$1"
-  local line
-  line=$(grep -A1 "^(ok-len $epoch " "$OUTFILE" | tail -1)
-  echo "$line" | sed -E 's/[()]//g'
-}
-
-TOTAL_PASS=0
-TOTAL_COUNT=0
-JSON_SUITES=""
-MD_ROWS=""
-
-idx=0
-for entry in "${SUITES[@]}"; do
-  name="${entry%%|*}"
-  epoch=$((100 + idx))
-  pair=$(parse_pair "$epoch")
-  pass=$(echo "$pair" | awk '{print $1}')
-  count=$(echo "$pair" | awk '{print $2}')
-  if [ -z "$pass" ] || [ -z "$count" ]; then
-    pass=0
-    count=0
-  fi
-  TOTAL_PASS=$((TOTAL_PASS + pass))
-  TOTAL_COUNT=$((TOTAL_COUNT + count))
-  status="ok"
-  marker="✅"
-  if [ "$pass" != "$count" ]; then
-    status="fail"
-    marker="❌"
-  fi
-  if [ "$VERBOSE" = "-v" ]; then
-    printf "  %-12s %s/%s\n" "$name" "$pass" "$count"
-  fi
-  if [ -n "$JSON_SUITES" ]; then JSON_SUITES+=","; fi
-  JSON_SUITES+=$'\n    '
-  JSON_SUITES+="{\"name\":\"$name\",\"pass\":$pass,\"total\":$count,\"status\":\"$status\"}"
-  MD_ROWS+="| $marker | $name | $pass | $count |"$'\n'
-  idx=$((idx + 1))
-done
-
-printf '\nErlang-on-SX conformance: %d / %d\n' "$TOTAL_PASS" "$TOTAL_COUNT"
-
-# scoreboard.json
-cat > lib/erlang/scoreboard.json <<JSON
-{
-  "language": "erlang",
-  "total_pass": $TOTAL_PASS,
-  "total": $TOTAL_COUNT,
-  "suites": [$JSON_SUITES
-  ]
-}
-JSON
-
-# scoreboard.md
-cat > lib/erlang/scoreboard.md <<MD
-# Erlang-on-SX Scoreboard
-
-**Total: ${TOTAL_PASS} / ${TOTAL_COUNT} tests passing**
-
-|  | Suite | Pass | Total |
-|---|---|---|---|
-$MD_ROWS
-
-Generated by \`lib/erlang/conformance.sh\`.
-MD
-
-if [ "$TOTAL_PASS" -eq "$TOTAL_COUNT" ]; then
-  exit 0
-else
-  exit 1
-fi

lib/erlang/parser-expr.sx

@@ -237,8 +237,6 @@
         (er-parse-fun-expr st)
         (er-is? st "keyword" "try")
         (er-parse-try st)
-        (er-is? st "punct" "<<")
-        (er-parse-binary st)
         :else (error
           (str
             "Erlang parse: unexpected "
@@ -283,56 +281,12 @@
   (fn
     (st)
     (er-expect! st "punct" "[")
-    (cond
+    (if
       (er-is? st "punct" "]")
       (do (er-advance! st) {:type "nil"})
-      :else (let
-        ((first (er-parse-expr-prec st 0)))
-        (cond
-          (er-is? st "punct" "||") (er-parse-list-comp st first)
-          :else (er-parse-list-tail st (list first)))))))
-
-(define
-  er-parse-list-comp
-  (fn
-    (st head)
-    (er-advance! st)
-    (let
-      ((quals (list (er-parse-lc-qualifier st))))
-      (er-parse-list-comp-tail st head quals))))
-
-(define
-  er-parse-list-comp-tail
-  (fn
-    (st head quals)
-    (cond
-      (er-is? st "punct" ",")
-      (do
-        (er-advance! st)
-        (append! quals (er-parse-lc-qualifier st))
-        (er-parse-list-comp-tail st head quals))
-      (er-is? st "punct" "]")
-      (do (er-advance! st) {:head head :qualifiers quals :type "lc"})
-      :else (error
-        (str
-          "Erlang parse: expected ',' or ']' in list comprehension, got '"
-          (er-cur-value st)
-          "'")))))
-
-(define
-  er-parse-lc-qualifier
-  (fn
-    (st)
-    (let
-      ((e (er-parse-expr-prec st 0)))
-      (cond
-        (er-is? st "punct" "<-")
-        (do
-          (er-advance! st)
-          (let
-            ((source (er-parse-expr-prec st 0)))
-            {:kind "gen" :pattern e :source source}))
-        :else {:kind "filter" :expr e}))))
+      (let
+        ((elems (list (er-parse-expr-prec st 0))))
+        (er-parse-list-tail st elems)))))
 
 (define
   er-parse-list-tail
@@ -578,63 +532,3 @@
           ((guards (if (er-is? st "keyword" "when") (do (er-advance! st) (er-parse-guards st)) (list))))
           (er-expect! st "punct" "->")
           (let ((body (er-parse-body st))) {:pattern pat :body body :class klass :guards guards}))))))
-
-;; ── binary literals / patterns ────────────────────────────────
-;; `<< [Seg {, Seg}] >>` where Seg = Value [: Size] [/ Spec]. Size is
-;; a literal integer (multiple of 8 supported); Spec is `integer`
-;; (default) or `binary` (rest-of-binary tail). Sufficient for the
-;; common `<<A:8, B:16, Rest/binary>>` patterns.
-(define
-  er-parse-binary
-  (fn
-    (st)
-    (er-expect! st "punct" "<<")
-    (cond
-      (er-is? st "punct" ">>")
-      (do (er-advance! st) {:segments (list) :type "binary"})
-      :else (let
-        ((segs (list (er-parse-binary-segment st))))
-        (er-parse-binary-tail st segs)))))
-
-(define
-  er-parse-binary-tail
-  (fn
-    (st segs)
-    (cond
-      (er-is? st "punct" ",")
-      (do
-        (er-advance! st)
-        (append! segs (er-parse-binary-segment st))
-        (er-parse-binary-tail st segs))
-      (er-is? st "punct" ">>")
-      (do (er-advance! st) {:segments segs :type "binary"})
-      :else (error
-        (str
-          "Erlang parse: expected ',' or '>>' in binary, got '"
-          (er-cur-value st)
-          "'")))))
-
-(define
-  er-parse-binary-segment
-  (fn
-    (st)
-    ;; Use `er-parse-primary` for the value so a leading `:` falls
-    ;; through to the segment's size suffix instead of being eaten
-    ;; by `er-parse-postfix-loop` as a `Mod:Fun` remote call.
-    (let
-      ((v (er-parse-primary st)))
-      (let
-        ((size (cond
-                 (er-is? st "punct" ":")
-                 (do (er-advance! st) (er-parse-primary st))
-                 :else nil))
-          (spec (cond
-                  (er-is? st "op" "/")
-                  (do
-                    (er-advance! st)
-                    (let
-                      ((tok (er-cur st)))
-                      (er-advance! st)
-                      (get tok :value)))
-                  :else "integer")))
-        {:size size :spec spec :value v}))))

lib/erlang/scoreboard.json

@@ -1,16 +0,0 @@
-{
-  "language": "erlang",
-  "total_pass": 530,
-  "total": 530,
-  "suites": [
-    {"name":"tokenize","pass":62,"total":62,"status":"ok"},
-    {"name":"parse","pass":52,"total":52,"status":"ok"},
-    {"name":"eval","pass":346,"total":346,"status":"ok"},
-    {"name":"runtime","pass":39,"total":39,"status":"ok"},
-    {"name":"ring","pass":4,"total":4,"status":"ok"},
-    {"name":"ping-pong","pass":4,"total":4,"status":"ok"},
-    {"name":"bank","pass":8,"total":8,"status":"ok"},
-    {"name":"echo","pass":7,"total":7,"status":"ok"},
-    {"name":"fib","pass":8,"total":8,"status":"ok"}
-  ]
-}

lib/erlang/scoreboard.md

@@ -1,18 +0,0 @@
-# Erlang-on-SX Scoreboard
-
-**Total: 530 / 530 tests passing**
-
-|  | Suite | Pass | Total |
-|---|---|---|---|
-| ✅ | tokenize | 62 | 62 |
-| ✅ | parse | 52 | 52 |
-| ✅ | eval | 346 | 346 |
-| ✅ | runtime | 39 | 39 |
-| ✅ | ring | 4 | 4 |
-| ✅ | ping-pong | 4 | 4 |
-| ✅ | bank | 8 | 8 |
-| ✅ | echo | 7 | 7 |
-| ✅ | fib | 8 | 8 |
-
-
-Generated by `lib/erlang/conformance.sh`.

lib/erlang/test.sh

@@ -1,260 +0,0 @@
-#!/usr/bin/env bash
-# lib/erlang/test.sh — smoke-test the Erlang runtime layer.
-# Uses sx_server.exe epoch protocol.
-#
-# Usage:
-#   bash lib/erlang/test.sh
-#   bash lib/erlang/test.sh -v
-
-set -uo pipefail
-cd "$(git rev-parse --show-toplevel)"
-
-SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
-if [ ! -x "$SX_SERVER" ]; then
-  SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
-fi
-if [ ! -x "$SX_SERVER" ]; then
-  echo "ERROR: sx_server.exe not found. Run: cd hosts/ocaml && dune build"
-  exit 1
-fi
-
-VERBOSE="${1:-}"
-PASS=0; FAIL=0; ERRORS=""
-TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
-
-cat > "$TMPFILE" << 'EPOCHS'
-(epoch 1)
-(load "lib/erlang/runtime.sx")
-
-;; --- Numeric tower ---
-(epoch 10)
-(eval "(er-is-integer? 42)")
-(epoch 11)
-(eval "(er-is-integer? 3.14)")
-(epoch 12)
-(eval "(er-is-float? 3.14)")
-(epoch 13)
-(eval "(er-is-float? 42)")
-(epoch 14)
-(eval "(er-is-number? 42)")
-(epoch 15)
-(eval "(er-is-number? 3.14)")
-(epoch 16)
-(eval "(er-float 5)")
-(epoch 17)
-(eval "(er-trunc 3.9)")
-(epoch 18)
-(eval "(er-round 3.5)")
-(epoch 19)
-(eval "(er-abs -7)")
-(epoch 20)
-(eval "(er-max 3 7)")
-(epoch 21)
-(eval "(er-min 3 7)")
-
-;; --- div + rem ---
-(epoch 30)
-(eval "(er-div 10 3)")
-(epoch 31)
-(eval "(er-div -10 3)")
-(epoch 32)
-(eval "(er-rem 10 3)")
-(epoch 33)
-(eval "(er-rem -10 3)")
-(epoch 34)
-(eval "(er-gcd 12 8)")
-
-;; --- Bitwise ---
-(epoch 40)
-(eval "(er-band 12 10)")
-(epoch 41)
-(eval "(er-bor 12 10)")
-(epoch 42)
-(eval "(er-bxor 12 10)")
-(epoch 43)
-(eval "(er-bnot 0)")
-(epoch 44)
-(eval "(er-bsl 1 4)")
-(epoch 45)
-(eval "(er-bsr 16 2)")
-
-;; --- Sets ---
-(epoch 50)
-(eval "(er-sets-is-set? (er-sets-new))")
-(epoch 51)
-(eval "(let ((s (er-sets-new))) (do (er-sets-add-element s 1) (er-sets-is-element s 1)))")
-(epoch 52)
-(eval "(er-sets-is-element (er-sets-new) 42)")
-(epoch 53)
-(eval "(er-sets-is-element (er-sets-from-list (list 1 2 3)) 2)")
-(epoch 54)
-(eval "(er-sets-size (er-sets-from-list (list 1 2 3)))")
-(epoch 55)
-(eval "(len (er-sets-to-list (er-sets-from-list (list 1 2 3))))")
-
-;; --- Regexp ---
-(epoch 60)
-(eval "(not (= (er-re-run \"hello\" \"ll\") nil))")
-(epoch 61)
-(eval "(= (er-re-run \"hello\" \"xyz\") nil)")
-(epoch 62)
-(eval "(get (er-re-run \"hello\" \"ll\") :match)")
-(epoch 63)
-(eval "(er-re-replace \"hello\" \"l\" \"r\")")
-(epoch 64)
-(eval "(er-re-replace-all \"hello\" \"l\" \"r\")")
-(epoch 65)
-(eval "(er-re-match-groups (er-re-run \"hello world\" \"(\\w+)\\s+(\\w+)\"))")
-(epoch 66)
-(eval "(len (er-re-split \"a,b,c\" \",\"))")
-
-;; --- List BIFs ---
-(epoch 70)
-(eval "(er-hd (list 1 2 3))")
-(epoch 71)
-(eval "(er-tl (list 1 2 3))")
-(epoch 72)
-(eval "(er-length (list 1 2 3))")
-(epoch 73)
-(eval "(er-lists-member 2 (list 1 2 3))")
-(epoch 74)
-(eval "(er-lists-member 9 (list 1 2 3))")
-(epoch 75)
-(eval "(er-lists-reverse (list 1 2 3))")
-(epoch 76)
-(eval "(er-lists-nth 2 (list 10 20 30))")
-(epoch 77)
-(eval "(er-lists-foldl + 0 (list 1 2 3 4 5))")
-(epoch 78)
-(eval "(er-lists-seq 1 5)")
-(epoch 79)
-(eval "(er-lists-flatten (list 1 (list 2 3) (list 4 (list 5))))")
-
-;; --- Type conversions ---
-(epoch 80)
-(eval "(er-integer-to-list 42)")
-(epoch 81)
-(eval "(er-list-to-integer \"42\")")
-(epoch 82)
-(eval "(er-integer-to-list-radix 255 16)")
-(epoch 83)
-(eval "(er-atom-to-list (make-symbol \"hello\"))")
-(epoch 84)
-(eval "(= (type-of (er-list-to-atom \"foo\")) \"symbol\")")
-
-;; --- ok/error tuples ---
-(epoch 90)
-(eval "(er-is-ok? (er-ok 42))")
-(epoch 91)
-(eval "(er-is-error? (er-error \"reason\"))")
-(epoch 92)
-(eval "(er-unwrap (er-ok 42))")
-(epoch 93)
-(eval "(er-is-ok? (er-error \"bad\"))")
-
-EPOCHS
-
-OUTPUT=$(timeout 30 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
-
-check() {
-  local epoch="$1" desc="$2" expected="$3"
-  local actual
-  actual=$(echo "$OUTPUT" | grep -A1 "^(ok-len $epoch " | tail -1 || true)
-  if echo "$actual" | grep -q "^(ok-len"; then actual=""; fi
-  if [ -z "$actual" ]; then
-    actual=$(echo "$OUTPUT" | grep "^(ok $epoch " | head -1 || true)
-  fi
-  if [ -z "$actual" ]; then
-    actual=$(echo "$OUTPUT" | grep "^(error $epoch " | head -1 || true)
-  fi
-  [ -z "$actual" ] && actual="<no output for epoch $epoch>"
-
-  if echo "$actual" | grep -qF -- "$expected"; then
-    PASS=$((PASS+1))
-    [ "$VERBOSE" = "-v" ] && echo "  ok $desc"
-  else
-    FAIL=$((FAIL+1))
-    ERRORS+="  FAIL [$desc] (epoch $epoch) expected: $expected | actual: $actual
-"
-  fi
-}
-
-# Numeric tower
-check 10  "is-integer? 42"        "true"
-check 11  "is-integer? float"     "false"
-check 12  "is-float? 3.14"        "true"
-check 13  "is-float? int"         "false"
-check 14  "is-number? int"        "true"
-check 15  "is-number? float"      "true"
-check 16  "float 5"               "5"
-check 17  "trunc 3.9"             "3"
-check 18  "round 3.5"             "4"
-check 19  "abs -7"                "7"
-check 20  "max 3 7"               "7"
-check 21  "min 3 7"               "3"
-
-# div + rem
-check 30  "div 10 3"              "3"
-check 31  "div -10 3"             "-3"
-check 32  "rem 10 3"              "1"
-check 33  "rem -10 3"             "-1"
-check 34  "gcd 12 8"              "4"
-
-# Bitwise
-check 40  "band 12 10"            "8"
-check 41  "bor 12 10"             "14"
-check 42  "bxor 12 10"            "6"
-check 43  "bnot 0"                "-1"
-check 44  "bsl 1 4"               "16"
-check 45  "bsr 16 2"              "4"
-
-# Sets
-check 50  "sets-new is-set?"      "true"
-check 51  "sets add+member"       "true"
-check 52  "member empty"          "false"
-check 53  "from-list member"      "true"
-check 54  "sets-size"             "3"
-check 55  "sets-to-list len"      "3"
-
-# Regexp
-check 60  "re-run match"          "true"
-check 61  "re-run no match"       "true"
-check 62  "re-run match text"     '"ll"'
-check 63  "re-replace first"      '"herlo"'
-check 64  "re-replace-all"        '"herro"'
-check 65  "re-match-groups"       '"hello"'
-check 66  "re-split count"        "3"
-
-# List BIFs
-check 70  "hd"                    "1"
-check 71  "tl"                    "(2 3)"
-check 72  "length"                "3"
-check 73  "member hit"            "true"
-check 74  "member miss"           "false"
-check 75  "reverse"               "(3 2 1)"
-check 76  "nth 2"                 "20"
-check 77  "foldl sum"             "15"
-check 78  "seq 1..5"              "(1 2 3 4 5)"
-check 79  "flatten"               "(1 2 3 4 5)"
-
-# Type conversions
-check 80  "integer-to-list"       '"42"'
-check 81  "list-to-integer"       "42"
-check 82  "integer-to-list hex"   '"ff"'
-check 83  "atom-to-list"          '"hello"'
-check 84  "list-to-atom"          "true"
-
-# ok/error
-check 90  "ok? ok-tuple"          "true"
-check 91  "error? error-tuple"    "true"
-check 92  "unwrap ok"             "42"
-check 93  "ok? error-tuple"       "false"
-
-TOTAL=$((PASS+FAIL))
-if [ $FAIL -eq 0 ]; then
-  echo "ok $PASS/$TOTAL lib/erlang tests passed"
-else
-  echo "FAIL $PASS/$TOTAL passed, $FAIL failed:"
-  echo "$ERRORS"
-fi
-[ $FAIL -eq 0 ]

lib/erlang/tests/programs/bank.sx

@@ -1,159 +0,0 @@
-;; Bank account server — stateful process, balance threaded through
-;; recursive loop. Handles {deposit, Amt, From}, {withdraw, Amt, From},
-;; {balance, From}, stop. Tests stateful process patterns.
-
-(define er-bank-test-count 0)
-(define er-bank-test-pass 0)
-(define er-bank-test-fails (list))
-
-(define
-  er-bank-test
-  (fn
-    (name actual expected)
-    (set! er-bank-test-count (+ er-bank-test-count 1))
-    (if
-      (= actual expected)
-      (set! er-bank-test-pass (+ er-bank-test-pass 1))
-      (append! er-bank-test-fails {:actual actual :expected expected :name name}))))
-
-(define bank-ev erlang-eval-ast)
-
-;; Server fun shared by all tests — threaded via the program string.
-(define
-  er-bank-server-src
-  "Server = fun (Balance) ->
-     receive
-       {deposit, Amt, From} -> From ! ok, Server(Balance + Amt);
-       {withdraw, Amt, From} ->
-         if Amt > Balance -> From ! insufficient, Server(Balance);
-            true -> From ! ok, Server(Balance - Amt)
-         end;
-       {balance, From} -> From ! Balance, Server(Balance);
-       stop -> ok
-     end
-   end")
-
-;; Open account, deposit, check balance.
-(er-bank-test
-  "deposit 100 -> balance 100"
-  (bank-ev
-    (str
-      er-bank-server-src
-      ", Me = self(),
-       Bank = spawn(fun () -> Server(0) end),
-       Bank ! {deposit, 100, Me},
-       receive ok -> ok end,
-       Bank ! {balance, Me},
-       receive B -> Bank ! stop, B end"))
-  100)
-
-;; Multiple deposits accumulate.
-(er-bank-test
-  "deposits accumulate"
-  (bank-ev
-    (str
-      er-bank-server-src
-      ", Me = self(),
-       Bank = spawn(fun () -> Server(0) end),
-       Bank ! {deposit, 50, Me}, receive ok -> ok end,
-       Bank ! {deposit, 25, Me}, receive ok -> ok end,
-       Bank ! {deposit, 10, Me}, receive ok -> ok end,
-       Bank ! {balance, Me},
-       receive B -> Bank ! stop, B end"))
-  85)
-
-;; Withdraw within balance succeeds; insufficient gets rejected.
-(er-bank-test
-  "withdraw within balance"
-  (bank-ev
-    (str
-      er-bank-server-src
-      ", Me = self(),
-       Bank = spawn(fun () -> Server(100) end),
-       Bank ! {withdraw, 30, Me}, receive ok -> ok end,
-       Bank ! {balance, Me},
-       receive B -> Bank ! stop, B end"))
-  70)
-
-(er-bank-test
-  "withdraw insufficient"
-  (get
-    (bank-ev
-      (str
-        er-bank-server-src
-        ", Me = self(),
-         Bank = spawn(fun () -> Server(20) end),
-         Bank ! {withdraw, 100, Me},
-         receive R -> Bank ! stop, R end"))
-    :name)
-  "insufficient")
-
-;; State preserved across an insufficient withdrawal.
-(er-bank-test
-  "state preserved on rejection"
-  (bank-ev
-    (str
-      er-bank-server-src
-      ", Me = self(),
-       Bank = spawn(fun () -> Server(50) end),
-       Bank ! {withdraw, 1000, Me}, receive _ -> ok end,
-       Bank ! {balance, Me},
-       receive B -> Bank ! stop, B end"))
-  50)
-
-;; Mixed deposits and withdrawals.
-(er-bank-test
-  "mixed transactions"
-  (bank-ev
-    (str
-      er-bank-server-src
-      ", Me = self(),
-       Bank = spawn(fun () -> Server(100) end),
-       Bank ! {deposit, 50, Me}, receive ok -> ok end,
-       Bank ! {withdraw, 30, Me}, receive ok -> ok end,
-       Bank ! {deposit, 10, Me}, receive ok -> ok end,
-       Bank ! {withdraw, 5, Me}, receive ok -> ok end,
-       Bank ! {balance, Me},
-       receive B -> Bank ! stop, B end"))
-  125)
-
-;; Server.stop terminates the bank cleanly — main can verify by
-;; sending stop and then exiting normally.
-(er-bank-test
-  "server stops cleanly"
-  (get
-    (bank-ev
-      (str
-        er-bank-server-src
-        ", Me = self(),
-         Bank = spawn(fun () -> Server(0) end),
-         Bank ! stop,
-         done"))
-    :name)
-  "done")
-
-;; Two clients sharing one bank — interleaved transactions.
-(er-bank-test
-  "two clients share bank"
-  (bank-ev
-    (str
-      er-bank-server-src
-      ", Me = self(),
-       Bank = spawn(fun () -> Server(0) end),
-       Client = fun (Amt) ->
-         spawn(fun () ->
-           Bank ! {deposit, Amt, self()},
-           receive ok -> Me ! deposited end
-         end)
-       end,
-       Client(40),
-       Client(60),
-       receive deposited -> ok end,
-       receive deposited -> ok end,
-       Bank ! {balance, Me},
-       receive B -> Bank ! stop, B end"))
-  100)
-
-(define
-  er-bank-test-summary
-  (str "bank " er-bank-test-pass "/" er-bank-test-count))

lib/erlang/tests/programs/echo.sx

@@ -1,140 +0,0 @@
-;; Echo server — minimal classic Erlang server. Receives {From, Msg}
-;; and sends Msg back to From, then loops. `stop` ends the server.
-
-(define er-echo-test-count 0)
-(define er-echo-test-pass 0)
-(define er-echo-test-fails (list))
-
-(define
-  er-echo-test
-  (fn
-    (name actual expected)
-    (set! er-echo-test-count (+ er-echo-test-count 1))
-    (if
-      (= actual expected)
-      (set! er-echo-test-pass (+ er-echo-test-pass 1))
-      (append! er-echo-test-fails {:actual actual :expected expected :name name}))))
-
-(define echo-ev erlang-eval-ast)
-
-(define
-  er-echo-server-src
-  "EchoSrv = fun () ->
-     Loop = fun () ->
-       receive
-         {From, Msg} -> From ! Msg, Loop();
-         stop -> ok
-       end
-     end,
-     Loop()
-   end")
-
-;; Single round-trip with an atom.
-(er-echo-test
-  "atom round-trip"
-  (get
-    (echo-ev
-      (str
-        er-echo-server-src
-        ", Me = self(),
-         Echo = spawn(EchoSrv),
-         Echo ! {Me, hello},
-         receive R -> Echo ! stop, R end"))
-    :name)
-  "hello")
-
-;; Number round-trip.
-(er-echo-test
-  "number round-trip"
-  (echo-ev
-    (str
-      er-echo-server-src
-      ", Me = self(),
-       Echo = spawn(EchoSrv),
-       Echo ! {Me, 42},
-       receive R -> Echo ! stop, R end"))
-  42)
-
-;; Tuple round-trip — pattern-match the reply to extract V.
-(er-echo-test
-  "tuple round-trip"
-  (echo-ev
-    (str
-      er-echo-server-src
-      ", Me = self(),
-       Echo = spawn(EchoSrv),
-       Echo ! {Me, {ok, 7}},
-       receive {ok, V} -> Echo ! stop, V end"))
-  7)
-
-;; List round-trip.
-(er-echo-test
-  "list round-trip"
-  (echo-ev
-    (str
-      er-echo-server-src
-      ", Me = self(),
-       Echo = spawn(EchoSrv),
-       Echo ! {Me, [1, 2, 3]},
-       receive [H | _] -> Echo ! stop, H end"))
-  1)
-
-;; Multiple sequential round-trips.
-(er-echo-test
-  "three round-trips"
-  (echo-ev
-    (str
-      er-echo-server-src
-      ", Me = self(),
-       Echo = spawn(EchoSrv),
-       Echo ! {Me, 10}, A = receive Ra -> Ra end,
-       Echo ! {Me, 20}, B = receive Rb -> Rb end,
-       Echo ! {Me, 30}, C = receive Rc -> Rc end,
-       Echo ! stop,
-       A + B + C"))
-  60)
-
-;; Two clients sharing one echo server. Each gets its own reply.
-(er-echo-test
-  "two clients"
-  (get
-    (echo-ev
-      (str
-        er-echo-server-src
-        ", Me = self(),
-         Echo = spawn(EchoSrv),
-         Client = fun (Tag) ->
-           spawn(fun () ->
-             Echo ! {self(), Tag},
-             receive R -> Me ! {got, R} end
-           end)
-         end,
-         Client(a),
-         Client(b),
-         receive {got, _} -> ok end,
-         receive {got, _} -> ok end,
-         Echo ! stop,
-         finished"))
-    :name)
-  "finished")
-
-;; Echo via io trace — verify each message round-trips through.
-(er-echo-test
-  "trace 4 messages"
-  (do
-    (er-io-flush!)
-    (echo-ev
-      (str
-        er-echo-server-src
-        ", Me = self(),
-         Echo = spawn(EchoSrv),
-         Send = fun (V) -> Echo ! {Me, V}, receive R -> io:format(\"~p \", [R]) end end,
-         Send(1), Send(2), Send(3), Send(4),
-         Echo ! stop,
-         done"))
-    (er-io-buffer-content))
-  "1 2 3 4 ")
-
-(define
-  er-echo-test-summary
-  (str "echo " er-echo-test-pass "/" er-echo-test-count))

lib/erlang/tests/programs/fib_server.sx

@@ -1,152 +0,0 @@
-;; Fib server — long-lived process that computes fibonacci numbers on
-;; request. Tests recursive function evaluation inside a server loop.
-
-(define er-fib-test-count 0)
-(define er-fib-test-pass 0)
-(define er-fib-test-fails (list))
-
-(define
-  er-fib-test
-  (fn
-    (name actual expected)
-    (set! er-fib-test-count (+ er-fib-test-count 1))
-    (if
-      (= actual expected)
-      (set! er-fib-test-pass (+ er-fib-test-pass 1))
-      (append! er-fib-test-fails {:actual actual :expected expected :name name}))))
-
-(define fib-ev erlang-eval-ast)
-
-;; Fib + server-loop source. Standalone so each test can chain queries.
-(define
-  er-fib-server-src
-  "Fib = fun (0) -> 0; (1) -> 1; (N) -> Fib(N-1) + Fib(N-2) end,
-   FibSrv = fun () ->
-     Loop = fun () ->
-       receive
-         {fib, N, From} -> From ! Fib(N), Loop();
-         stop -> ok
-       end
-     end,
-     Loop()
-   end")
-
-;; Base cases.
-(er-fib-test
-  "fib(0)"
-  (fib-ev
-    (str
-      er-fib-server-src
-      ", Me = self(),
-       Srv = spawn(FibSrv),
-       Srv ! {fib, 0, Me},
-       receive R -> Srv ! stop, R end"))
-  0)
-
-(er-fib-test
-  "fib(1)"
-  (fib-ev
-    (str
-      er-fib-server-src
-      ", Me = self(),
-       Srv = spawn(FibSrv),
-       Srv ! {fib, 1, Me},
-       receive R -> Srv ! stop, R end"))
-  1)
-
-;; Larger values.
-(er-fib-test
-  "fib(10) = 55"
-  (fib-ev
-    (str
-      er-fib-server-src
-      ", Me = self(),
-       Srv = spawn(FibSrv),
-       Srv ! {fib, 10, Me},
-       receive R -> Srv ! stop, R end"))
-  55)
-
-(er-fib-test
-  "fib(15) = 610"
-  (fib-ev
-    (str
-      er-fib-server-src
-      ", Me = self(),
-       Srv = spawn(FibSrv),
-       Srv ! {fib, 15, Me},
-       receive R -> Srv ! stop, R end"))
-  610)
-
-;; Multiple sequential queries to one server. Sum to avoid dict-equality.
-(er-fib-test
-  "sequential fib(5..8) sum"
-  (fib-ev
-    (str
-      er-fib-server-src
-      ", Me = self(),
-       Srv = spawn(FibSrv),
-       Srv ! {fib, 5, Me}, A = receive Ra -> Ra end,
-       Srv ! {fib, 6, Me}, B = receive Rb -> Rb end,
-       Srv ! {fib, 7, Me}, C = receive Rc -> Rc end,
-       Srv ! {fib, 8, Me}, D = receive Rd -> Rd end,
-       Srv ! stop,
-       A + B + C + D"))
-  47)
-
-;; Verify Fib obeys the recurrence — fib(n) = fib(n-1) + fib(n-2).
-(er-fib-test
-  "fib recurrence at n=12"
-  (fib-ev
-    (str
-      er-fib-server-src
-      ", Me = self(),
-       Srv = spawn(FibSrv),
-       Srv ! {fib, 10, Me}, A = receive Ra -> Ra end,
-       Srv ! {fib, 11, Me}, B = receive Rb -> Rb end,
-       Srv ! {fib, 12, Me}, C = receive Rc -> Rc end,
-       Srv ! stop,
-       C - (A + B)"))
-  0)
-
-;; Two clients each get their own answer; main sums the results.
-(er-fib-test
-  "two clients sum"
-  (fib-ev
-    (str
-      er-fib-server-src
-      ", Me = self(),
-       Srv = spawn(FibSrv),
-       Client = fun (N) ->
-         spawn(fun () ->
-           Srv ! {fib, N, self()},
-           receive R -> Me ! {result, R} end
-         end)
-       end,
-       Client(7),
-       Client(9),
-       {result, A} = receive M1 -> M1 end,
-       {result, B} = receive M2 -> M2 end,
-       Srv ! stop,
-       A + B"))
-  47)
-
-;; Trace queries via io-buffer.
-(er-fib-test
-  "trace fib 0..6"
-  (do
-    (er-io-flush!)
-    (fib-ev
-      (str
-        er-fib-server-src
-        ", Me = self(),
-         Srv = spawn(FibSrv),
-         Ask = fun (N) -> Srv ! {fib, N, Me}, receive R -> io:format(\"~p \", [R]) end end,
-         Ask(0), Ask(1), Ask(2), Ask(3), Ask(4), Ask(5), Ask(6),
-         Srv ! stop,
-         done"))
-    (er-io-buffer-content))
-  "0 1 1 2 3 5 8 ")
-
-(define
-  er-fib-test-summary
-  (str "fib " er-fib-test-pass "/" er-fib-test-count))

lib/erlang/tests/programs/ping_pong.sx

@@ -1,127 +0,0 @@
-;; Ping-pong program — two processes exchange N messages, then signal
-;; main via separate `ping_done` / `pong_done` notifications.
-
-(define er-pp-test-count 0)
-(define er-pp-test-pass 0)
-(define er-pp-test-fails (list))
-
-(define
-  er-pp-test
-  (fn
-    (name actual expected)
-    (set! er-pp-test-count (+ er-pp-test-count 1))
-    (if
-      (= actual expected)
-      (set! er-pp-test-pass (+ er-pp-test-pass 1))
-      (append! er-pp-test-fails {:actual actual :expected expected :name name}))))
-
-(define pp-ev erlang-eval-ast)
-
-;; Three rounds of ping-pong, then stop. Main receives ping_done and
-;; pong_done in arrival order (Ping finishes first because Pong exits
-;; only after receiving stop).
-(define
-  er-pp-program
-  "Me = self(),
-   Pong = spawn(fun () ->
-     Loop = fun () ->
-       receive
-         {ping, From} -> From ! pong, Loop();
-         stop -> Me ! pong_done
-       end
-     end,
-     Loop()
-   end),
-   Ping = fun (Target, K) ->
-     if K =:= 0 -> Target ! stop, Me ! ping_done;
-        true -> Target ! {ping, self()}, receive pong -> Ping(Target, K - 1) end
-     end
-   end,
-   spawn(fun () -> Ping(Pong, 3) end),
-   receive ping_done -> ok end,
-   receive pong_done -> both_done end")
-
-(er-pp-test
-  "ping-pong 3 rounds"
-  (get (pp-ev er-pp-program) :name)
-  "both_done")
-
-;; Count exchanges via io-buffer — each pong trip prints "p".
-(er-pp-test
-  "ping-pong 5 rounds trace"
-  (do
-    (er-io-flush!)
-    (pp-ev
-      "Me = self(),
-       Pong = spawn(fun () ->
-         Loop = fun () ->
-           receive
-             {ping, From} -> io:format(\"p\"), From ! pong, Loop();
-             stop -> Me ! pong_done
-           end
-         end,
-         Loop()
-       end),
-       Ping = fun (Target, K) ->
-         if K =:= 0 -> Target ! stop, Me ! ping_done;
-            true -> Target ! {ping, self()}, receive pong -> Ping(Target, K - 1) end
-         end
-       end,
-       spawn(fun () -> Ping(Pong, 5) end),
-       receive ping_done -> ok end,
-       receive pong_done -> ok end")
-    (er-io-buffer-content))
-  "ppppp")
-
-;; Main → Pong directly (no Ping process). Main plays the ping role.
-(er-pp-test
-  "main-as-pinger 4 rounds"
-  (pp-ev
-    "Me = self(),
-     Pong = spawn(fun () ->
-       Loop = fun () ->
-         receive
-           {ping, From} -> From ! pong, Loop();
-           stop -> ok
-         end
-       end,
-       Loop()
-     end),
-     Go = fun (K) ->
-       if K =:= 0 -> Pong ! stop, K;
-          true -> Pong ! {ping, Me}, receive pong -> Go(K - 1) end
-       end
-     end,
-     Go(4)")
-  0)
-
-;; Ensure the processes really interleave — inject an id into each
-;; ping and check we get them all back via trace (the order is
-;; deterministic under our sync scheduler).
-(er-pp-test
-  "ids round-trip"
-  (do
-    (er-io-flush!)
-    (pp-ev
-      "Me = self(),
-       Pong = spawn(fun () ->
-         Loop = fun () ->
-           receive
-             {ping, From, Id} -> From ! {pong, Id}, Loop();
-             stop -> ok
-           end
-         end,
-         Loop()
-       end),
-       Go = fun (K) ->
-         if K =:= 0 -> Pong ! stop, done;
-            true -> Pong ! {ping, Me, K}, receive {pong, RId} -> io:format(\"~p \", [RId]), Go(K - 1) end
-         end
-       end,
-       Go(4)")
-    (er-io-buffer-content))
-  "4 3 2 1 ")
-
-(define
-  er-pp-test-summary
-  (str "ping-pong " er-pp-test-pass "/" er-pp-test-count))

lib/erlang/tests/programs/ring.sx

@@ -1,132 +0,0 @@
-;; Ring program — N processes in a ring, token passes M times.
-;;
-;; Each process waits for {setup, Next} so main can tie the knot
-;; (can't reference a pid before spawning it). Once wired, main
-;; injects the first token; each process forwards decrementing K
-;; until it hits 0, at which point it signals `done` to main.
-
-(define er-ring-test-count 0)
-(define er-ring-test-pass 0)
-(define er-ring-test-fails (list))
-
-(define
-  er-ring-test
-  (fn
-    (name actual expected)
-    (set! er-ring-test-count (+ er-ring-test-count 1))
-    (if
-      (= actual expected)
-      (set! er-ring-test-pass (+ er-ring-test-pass 1))
-      (append! er-ring-test-fails {:actual actual :expected expected :name name}))))
-
-(define ring-ev erlang-eval-ast)
-
-(define
-  er-ring-program-3-6
-  "Me = self(),
-   Spawner = fun () ->
-     receive {setup, Next} ->
-       Loop = fun () ->
-         receive
-           {token, 0, Parent} -> Parent ! done;
-           {token, K, Parent} -> Next ! {token, K-1, Parent}, Loop()
-         end
-       end,
-       Loop()
-     end
-   end,
-   P1 = spawn(Spawner),
-   P2 = spawn(Spawner),
-   P3 = spawn(Spawner),
-   P1 ! {setup, P2},
-   P2 ! {setup, P3},
-   P3 ! {setup, P1},
-   P1 ! {token, 5, Me},
-   receive done -> finished end")
-
-(er-ring-test
-  "ring N=3 M=6"
-  (get (ring-ev er-ring-program-3-6) :name)
-  "finished")
-
-;; Two-node ring — token bounces twice between P1 and P2.
-(er-ring-test
-  "ring N=2 M=4"
-  (get (ring-ev
-    "Me = self(),
-     Spawner = fun () ->
-       receive {setup, Next} ->
-         Loop = fun () ->
-           receive
-             {token, 0, Parent} -> Parent ! done;
-             {token, K, Parent} -> Next ! {token, K-1, Parent}, Loop()
-           end
-         end,
-         Loop()
-       end
-     end,
-     P1 = spawn(Spawner),
-     P2 = spawn(Spawner),
-     P1 ! {setup, P2},
-     P2 ! {setup, P1},
-     P1 ! {token, 3, Me},
-     receive done -> done end") :name)
-  "done")
-
-;; Single-node "ring" — P sends to itself M times.
-(er-ring-test
-  "ring N=1 M=5"
-  (get (ring-ev
-    "Me = self(),
-     Spawner = fun () ->
-       receive {setup, Next} ->
-         Loop = fun () ->
-           receive
-             {token, 0, Parent} -> Parent ! finished_loop;
-             {token, K, Parent} -> Next ! {token, K-1, Parent}, Loop()
-           end
-         end,
-         Loop()
-       end
-     end,
-     P = spawn(Spawner),
-     P ! {setup, P},
-     P ! {token, 4, Me},
-     receive finished_loop -> ok end") :name)
-  "ok")
-
-;; Confirm the token really went around — count hops via io-buffer.
-(er-ring-test
-  "ring N=3 M=9 hop count"
-  (do
-    (er-io-flush!)
-    (ring-ev
-      "Me = self(),
-       Spawner = fun () ->
-         receive {setup, Next} ->
-           Loop = fun () ->
-             receive
-               {token, 0, Parent} -> Parent ! done;
-               {token, K, Parent} ->
-                 io:format(\"~p \", [K]),
-                 Next ! {token, K-1, Parent},
-                 Loop()
-             end
-           end,
-           Loop()
-         end
-       end,
-       P1 = spawn(Spawner),
-       P2 = spawn(Spawner),
-       P3 = spawn(Spawner),
-       P1 ! {setup, P2},
-       P2 ! {setup, P3},
-       P3 ! {setup, P1},
-       P1 ! {token, 8, Me},
-       receive done -> done end")
-    (er-io-buffer-content))
-  "8 7 6 5 4 3 2 1 ")
-
-(define
-  er-ring-test-summary
-  (str "ring " er-ring-test-pass "/" er-ring-test-count))

lib/erlang/tests/runtime.sx

@@ -1,139 +0,0 @@
-;; Erlang runtime tests — scheduler + process-record primitives.
-
-(define er-rt-test-count 0)
-(define er-rt-test-pass 0)
-(define er-rt-test-fails (list))
-
-(define
-  er-rt-test
-  (fn
-    (name actual expected)
-    (set! er-rt-test-count (+ er-rt-test-count 1))
-    (if
-      (= actual expected)
-      (set! er-rt-test-pass (+ er-rt-test-pass 1))
-      (append! er-rt-test-fails {:actual actual :expected expected :name name}))))
-
-;; ── queue ─────────────────────────────────────────────────────────
-(er-rt-test "queue empty len" (er-q-len (er-q-new)) 0)
-(er-rt-test "queue empty?" (er-q-empty? (er-q-new)) true)
-
-(define q1 (er-q-new))
-(er-q-push! q1 "a")
-(er-q-push! q1 "b")
-(er-q-push! q1 "c")
-(er-rt-test "queue push len" (er-q-len q1) 3)
-(er-rt-test "queue empty? after push" (er-q-empty? q1) false)
-(er-rt-test "queue peek" (er-q-peek q1) "a")
-(er-rt-test "queue pop 1" (er-q-pop! q1) "a")
-(er-rt-test "queue pop 2" (er-q-pop! q1) "b")
-(er-rt-test "queue len after pops" (er-q-len q1) 1)
-(er-rt-test "queue pop 3" (er-q-pop! q1) "c")
-(er-rt-test "queue empty again" (er-q-empty? q1) true)
-(er-rt-test "queue pop empty" (er-q-pop! q1) nil)
-
-;; Queue FIFO under interleaved push/pop
-(define q2 (er-q-new))
-(er-q-push! q2 1)
-(er-q-push! q2 2)
-(er-q-pop! q2)
-(er-q-push! q2 3)
-(er-rt-test "queue interleave peek" (er-q-peek q2) 2)
-(er-rt-test "queue to-list" (er-q-to-list q2) (list 2 3))
-
-;; ── scheduler init ─────────────────────────────────────────────
-(er-sched-init!)
-(er-rt-test "sched process count 0" (er-sched-process-count) 0)
-(er-rt-test "sched runnable count 0" (er-sched-runnable-count) 0)
-(er-rt-test "sched current nil" (er-sched-current-pid) nil)
-
-;; ── pid allocation ─────────────────────────────────────────────
-(define pa (er-pid-new!))
-(define pb (er-pid-new!))
-(er-rt-test "pid tag" (get pa :tag) "pid")
-(er-rt-test "pid ids distinct" (= (er-pid-id pa) (er-pid-id pb)) false)
-(er-rt-test "pid? true" (er-pid? pa) true)
-(er-rt-test "pid? false" (er-pid? 42) false)
-(er-rt-test
-  "pid-equal same"
-  (er-pid-equal? pa (er-mk-pid (er-pid-id pa)))
-  true)
-(er-rt-test "pid-equal diff" (er-pid-equal? pa pb) false)
-
-;; ── process lifecycle ──────────────────────────────────────────
-(er-sched-init!)
-(define p1 (er-proc-new! {}))
-(define p2 (er-proc-new! {}))
-(er-rt-test "proc count 2" (er-sched-process-count) 2)
-(er-rt-test "runnable count 2" (er-sched-runnable-count) 2)
-(er-rt-test
-  "proc state runnable"
-  (er-proc-field (get p1 :pid) :state)
-  "runnable")
-(er-rt-test
-  "proc mailbox empty"
-  (er-proc-mailbox-size (get p1 :pid))
-  0)
-(er-rt-test
-  "proc lookup"
-  (er-pid-equal? (get (er-proc-get (get p1 :pid)) :pid) (get p1 :pid))
-  true)
-(er-rt-test "proc exists" (er-proc-exists? (get p1 :pid)) true)
-(er-rt-test
-  "proc no-such-pid"
-  (er-proc-exists? (er-mk-pid 9999))
-  false)
-
-;; runnable queue dequeue order
-(er-rt-test
-  "dequeue first"
-  (er-pid-equal? (er-sched-next-runnable!) (get p1 :pid))
-  true)
-(er-rt-test
-  "dequeue second"
-  (er-pid-equal? (er-sched-next-runnable!) (get p2 :pid))
-  true)
-(er-rt-test "dequeue empty" (er-sched-next-runnable!) nil)
-
-;; current-pid get/set
-(er-sched-set-current! (get p1 :pid))
-(er-rt-test
-  "current pid set"
-  (er-pid-equal? (er-sched-current-pid) (get p1 :pid))
-  true)
-
-;; ── mailbox push ──────────────────────────────────────────────
-(er-proc-mailbox-push! (get p1 :pid) {:tag "atom" :name "ping"})
-(er-proc-mailbox-push! (get p1 :pid) 42)
-(er-rt-test "mailbox size 2" (er-proc-mailbox-size (get p1 :pid)) 2)
-
-;; ── field update ──────────────────────────────────────────────
-(er-proc-set! (get p1 :pid) :state "waiting")
-(er-rt-test
-  "proc state waiting"
-  (er-proc-field (get p1 :pid) :state)
-  "waiting")
-(er-proc-set! (get p1 :pid) :trap-exit true)
-(er-rt-test
-  "proc trap-exit"
-  (er-proc-field (get p1 :pid) :trap-exit)
-  true)
-
-;; ── fresh scheduler ends in clean state ───────────────────────
-(er-sched-init!)
-(er-rt-test
-  "sched init resets count"
-  (er-sched-process-count)
-  0)
-(er-rt-test
-  "sched init resets queue"
-  (er-sched-runnable-count)
-  0)
-(er-rt-test
-  "sched init resets current"
-  (er-sched-current-pid)
-  nil)
-
-(define
-  er-rt-test-summary
-  (str "runtime " er-rt-test-pass "/" er-rt-test-count))

lib/forth/runtime.sx

@@ -1,175 +1,433 @@
-;; lib/forth/runtime.sx — Forth primitives on SX
-;;
-;; Provides Forth-idiomatic wrappers over SX built-ins.
-;; Primitives used:
-;;   bitwise-and/or/xor/not/arithmetic-shift/bit-count (Phase 7)
-;;   make-bytevector/bytevector-u8-ref/u8-set!/...     (Phase 20)
-;;   quotient/remainder/modulo                          (Phase 15 / builtin)
-;;
-;; Naming: SX identifiers can't include @ or !-alone, so Forth words are:
-;;   C@ → forth-cfetch    C! → forth-cstore
-;;   @  → forth-fetch     !  → forth-store
-
-;; ---------------------------------------------------------------------------
-;; 1. Bitwise operations — Forth core words
-;;    Forth TRUE = -1 (all bits set), FALSE = 0.
-;;    All ops coerce to integer via truncate.
-;; ---------------------------------------------------------------------------
-
-(define (forth-and a b) (bitwise-and (truncate a) (truncate b)))
-(define (forth-or a b) (bitwise-or (truncate a) (truncate b)))
-(define (forth-xor a b) (bitwise-xor (truncate a) (truncate b)))
-
-;; INVERT — bitwise NOT (Forth NOT is logical; INVERT is bitwise)
-(define (forth-invert a) (bitwise-not (truncate a)))
-
-;; LSHIFT RSHIFT — n bit — shift a by n positions
-(define (forth-lshift a n) (arithmetic-shift (truncate a) (truncate n)))
-(define
-  (forth-rshift a n)
-  (arithmetic-shift (truncate a) (- 0 (truncate n))))
-
-;; 2* 2/ — multiply/divide by 2 via bit shift
-(define (forth-2* a) (arithmetic-shift (truncate a) 1))
-(define (forth-2/ a) (arithmetic-shift (truncate a) -1))
-
-;; BIT-COUNT — number of set bits (Kernighan popcount)
-(define (forth-bit-count a) (bit-count (truncate a)))
-
-;; INTEGER-LENGTH — index of highest set bit (0 for zero)
-(define (forth-integer-length a) (integer-length (truncate a)))
-
-;; WITHIN — ( u ul uh -- flag ) true if ul <= u < uh
-(define (forth-within u ul uh) (and (>= u ul) (< u uh)))
-
-;; Arithmetic complements commonly used alongside bitwise ops
-(define (forth-negate a) (- 0 (truncate a)))
-(define (forth-abs a) (abs (truncate a)))
-(define (forth-min a b) (if (< a b) a b))
-(define (forth-max a b) (if (> a b) a b))
-(define (forth-mod a b) (modulo (truncate a) (truncate b)))
-
-;; /MOD — ( n1 n2 -- rem quot ) returns list (remainder quotient)
-(define
-  (forth-divmod a b)
-  (list
-    (remainder (truncate a) (truncate b))
-    (quotient (truncate a) (truncate b))))
-
-;; ---------------------------------------------------------------------------
-;; 2. String buffer — word-definition / string accumulation
-;;    EMIT appends one char; TYPE appends a string.
-;;    Value is retrieved with forth-sb-value.
-;; ---------------------------------------------------------------------------
+;; Forth runtime — state, stacks, dictionary, output buffer.
+;; Data stack: mutable SX list, TOS = first.
+;; Return stack: separate mutable list.
+;; Dictionary: SX dict {lowercased-name -> word-record}.
+;; Word record: {"kind" "body" "immediate?"}; kind is "primitive" or "colon-def".
+;; Output buffer: mutable string appended to by `.`, `EMIT`, `CR`, etc.
+;; Compile-mode flag: "compiling" on the state.
 
 (define
-  (forth-sb-new)
-  (let
-    ((sb (dict)))
-    (dict-set! sb "_forth_sb" true)
-    (dict-set! sb "_chars" (list))
-    sb))
-
-(define (forth-sb? v) (and (dict? v) (dict-has? v "_forth_sb")))
-
-;; EMIT — append one character
-(define
-  (forth-sb-emit! sb c)
-  (dict-set! sb "_chars" (append (get sb "_chars") (list c)))
-  sb)
-
-;; TYPE — append a string
-(define
-  (forth-sb-type! sb s)
-  (dict-set! sb "_chars" (append (get sb "_chars") (string->list s)))
-  sb)
-
-(define (forth-sb-value sb) (list->string (get sb "_chars")))
-
-(define (forth-sb-length sb) (len (get sb "_chars")))
-
-(define (forth-sb-clear! sb) (dict-set! sb "_chars" (list)) sb)
-
-;; Emit integer as decimal digits
-(define (forth-sb-emit-int! sb n) (forth-sb-type! sb (str (truncate n))))
-
-;; ---------------------------------------------------------------------------
-;; 3. Memory / Bytevectors — Forth raw memory model
-;;    ALLOT allocates a bytevector. Byte and cell (32-bit LE) access.
-;; ---------------------------------------------------------------------------
-
-;; ALLOT — allocate n bytes zero-initialised
-(define (forth-mem-new n) (make-bytevector (truncate n) 0))
-
-(define (forth-mem? v) (bytevector? v))
-
-(define (forth-mem-size v) (bytevector-length v))
-
-;; C@ C! — byte fetch/store
-(define (forth-cfetch mem addr) (bytevector-u8-ref mem (truncate addr)))
+  forth-make-state
+  (fn
+    ()
+    (let
+      ((s (dict)))
+      (dict-set! s "dstack" (list))
+      (dict-set! s "rstack" (list))
+      (dict-set! s "dict" (dict))
+      (dict-set! s "output" "")
+      (dict-set! s "compiling" false)
+      (dict-set! s "current-def" nil)
+      (dict-set! s "base" 10)
+      (dict-set! s "vars" (dict))
+      s)))
 
 (define
-  (forth-cstore mem addr val)
-  (bytevector-u8-set!
-    mem
-    (truncate addr)
-    (modulo (truncate val) 256))
-  mem)
-
-;; @ ! — 32-bit little-endian cell fetch/store
-(define
-  (forth-fetch mem addr)
-  (let
-    ((a (truncate addr)))
-    (+
-      (bytevector-u8-ref mem a)
-      (* 256 (bytevector-u8-ref mem (+ a 1)))
-      (* 65536 (bytevector-u8-ref mem (+ a 2)))
-      (* 16777216 (bytevector-u8-ref mem (+ a 3))))))
+  forth-error
+  (fn (state msg) (dict-set! state "error" msg) (raise msg)))
 
 (define
-  (forth-store mem addr val)
-  (let
-    ((a (truncate addr)) (v (truncate val)))
-    (bytevector-u8-set! mem a (modulo v 256))
-    (bytevector-u8-set!
-      mem
-      (+ a 1)
-      (modulo (quotient v 256) 256))
-    (bytevector-u8-set!
-      mem
-      (+ a 2)
-      (modulo (quotient v 65536) 256))
-    (bytevector-u8-set!
-      mem
-      (+ a 3)
-      (modulo (quotient v 16777216) 256)))
-  mem)
+  forth-push
+  (fn (state v) (dict-set! state "dstack" (cons v (get state "dstack")))))
 
-;; MOVE — copy count bytes from src[src-addr] to dst[dst-addr]
 (define
-  (forth-move! src src-addr dst dst-addr count)
-  (letrec
-    ((go (fn (i) (when (< i (truncate count)) (bytevector-u8-set! dst (+ (truncate dst-addr) i) (bytevector-u8-ref src (+ (truncate src-addr) i))) (go (+ i 1))))))
-    (go 0))
-  dst)
+  forth-pop
+  (fn
+    (state)
+    (let
+      ((st (get state "dstack")))
+      (if
+        (= (len st) 0)
+        (forth-error state "stack underflow")
+        (let ((top (first st))) (dict-set! state "dstack" (rest st)) top)))))
 
-;; FILL — fill count bytes at addr with byte value
 (define
-  (forth-fill! mem addr count byte)
-  (letrec
-    ((go (fn (i) (when (< i (truncate count)) (bytevector-u8-set! mem (+ (truncate addr) i) (modulo (truncate byte) 256)) (go (+ i 1))))))
-    (go 0))
-  mem)
+  forth-peek
+  (fn
+    (state)
+    (let
+      ((st (get state "dstack")))
+      (if (= (len st) 0) (forth-error state "stack underflow") (first st)))))
 
-;; ERASE — fill with zeros (Forth: ERASE)
-(define
-  (forth-erase! mem addr count)
-  (forth-fill! mem addr count 0))
+(define forth-depth (fn (state) (len (get state "dstack"))))
 
-;; Dump memory region as list of byte values
 (define
-  (forth-mem->list mem addr count)
-  (letrec
-    ((go (fn (i acc) (if (= i 0) acc (go (- i 1) (cons (bytevector-u8-ref mem (+ (truncate addr) (- i 1))) acc))))))
-    (go (truncate count) (list))))
+  forth-rpush
+  (fn (state v) (dict-set! state "rstack" (cons v (get state "rstack")))))
+
+(define
+  forth-rpop
+  (fn
+    (state)
+    (let
+      ((st (get state "rstack")))
+      (if
+        (= (len st) 0)
+        (forth-error state "return stack underflow")
+        (let ((top (first st))) (dict-set! state "rstack" (rest st)) top)))))
+
+(define
+  forth-rpeek
+  (fn
+    (state)
+    (let
+      ((st (get state "rstack")))
+      (if
+        (= (len st) 0)
+        (forth-error state "return stack underflow")
+        (first st)))))
+
+(define
+  forth-emit-str
+  (fn (state s) (dict-set! state "output" (str (get state "output") s))))
+
+(define
+  forth-make-word
+  (fn
+    (kind body immediate?)
+    (let
+      ((w (dict)))
+      (dict-set! w "kind" kind)
+      (dict-set! w "body" body)
+      (dict-set! w "immediate?" immediate?)
+      w)))
+
+(define
+  forth-def-prim!
+  (fn
+    (state name body)
+    (dict-set!
+      (get state "dict")
+      (downcase name)
+      (forth-make-word "primitive" body false))))
+
+(define
+  forth-def-prim-imm!
+  (fn
+    (state name body)
+    (dict-set!
+      (get state "dict")
+      (downcase name)
+      (forth-make-word "primitive" body true))))
+
+(define
+  forth-lookup
+  (fn (state name) (get (get state "dict") (downcase name))))
+
+(define
+  forth-binop
+  (fn
+    (op)
+    (fn
+      (state)
+      (let
+        ((b (forth-pop state)) (a (forth-pop state)))
+        (forth-push state (op a b))))))
+
+(define
+  forth-unop
+  (fn
+    (op)
+    (fn (state) (let ((a (forth-pop state))) (forth-push state (op a))))))
+
+(define
+  forth-cmp
+  (fn
+    (op)
+    (fn
+      (state)
+      (let
+        ((b (forth-pop state)) (a (forth-pop state)))
+        (forth-push state (if (op a b) -1 0))))))
+
+(define
+  forth-cmp0
+  (fn
+    (op)
+    (fn
+      (state)
+      (let ((a (forth-pop state))) (forth-push state (if (op a) -1 0))))))
+
+(define
+  forth-trunc
+  (fn (x) (if (< x 0) (- 0 (floor (- 0 x))) (floor x))))
+
+(define
+  forth-div
+  (fn
+    (a b)
+    (if (= b 0) (raise "division by zero") (forth-trunc (/ a b)))))
+
+(define
+  forth-mod
+  (fn
+    (a b)
+    (if (= b 0) (raise "division by zero") (- a (* b (forth-div a b))))))
+
+(define forth-bits-width 32)
+
+(define
+  forth-to-unsigned
+  (fn (n w) (let ((m (pow 2 w))) (mod (+ (mod n m) m) m))))
+
+(define
+  forth-from-unsigned
+  (fn
+    (n w)
+    (let ((half (pow 2 (- w 1)))) (if (>= n half) (- n (pow 2 w)) n))))
+
+(define
+  forth-bitwise-step
+  (fn
+    (op ua ub out place i w)
+    (if
+      (>= i w)
+      out
+      (let
+        ((da (mod ua 2)) (db (mod ub 2)))
+        (forth-bitwise-step
+          op
+          (floor (/ ua 2))
+          (floor (/ ub 2))
+          (+ out (* place (op da db)))
+          (* place 2)
+          (+ i 1)
+          w)))))
+
+(define
+  forth-bitwise-uu
+  (fn
+    (op)
+    (fn
+      (a b)
+      (let
+        ((ua (forth-to-unsigned a forth-bits-width))
+          (ub (forth-to-unsigned b forth-bits-width)))
+        (forth-from-unsigned
+          (forth-bitwise-step op ua ub 0 1 0 forth-bits-width)
+          forth-bits-width)))))
+
+(define
+  forth-bit-and
+  (forth-bitwise-uu (fn (x y) (if (and (= x 1) (= y 1)) 1 0))))
+
+(define
+  forth-bit-or
+  (forth-bitwise-uu (fn (x y) (if (or (= x 1) (= y 1)) 1 0))))
+
+(define forth-bit-xor (forth-bitwise-uu (fn (x y) (if (= x y) 0 1))))
+
+(define forth-bit-invert (fn (a) (- 0 (+ a 1))))
+
+(define
+  forth-install-primitives!
+  (fn
+    (state)
+    (forth-def-prim! state "DUP" (fn (s) (forth-push s (forth-peek s))))
+    (forth-def-prim! state "DROP" (fn (s) (forth-pop s)))
+    (forth-def-prim!
+      state
+      "SWAP"
+      (fn
+        (s)
+        (let
+          ((b (forth-pop s)) (a (forth-pop s)))
+          (forth-push s b)
+          (forth-push s a))))
+    (forth-def-prim!
+      state
+      "OVER"
+      (fn
+        (s)
+        (let
+          ((b (forth-pop s)) (a (forth-pop s)))
+          (forth-push s a)
+          (forth-push s b)
+          (forth-push s a))))
+    (forth-def-prim!
+      state
+      "ROT"
+      (fn
+        (s)
+        (let
+          ((c (forth-pop s)) (b (forth-pop s)) (a (forth-pop s)))
+          (forth-push s b)
+          (forth-push s c)
+          (forth-push s a))))
+    (forth-def-prim!
+      state
+      "-ROT"
+      (fn
+        (s)
+        (let
+          ((c (forth-pop s)) (b (forth-pop s)) (a (forth-pop s)))
+          (forth-push s c)
+          (forth-push s a)
+          (forth-push s b))))
+    (forth-def-prim!
+      state
+      "NIP"
+      (fn (s) (let ((b (forth-pop s))) (forth-pop s) (forth-push s b))))
+    (forth-def-prim!
+      state
+      "TUCK"
+      (fn
+        (s)
+        (let
+          ((b (forth-pop s)) (a (forth-pop s)))
+          (forth-push s b)
+          (forth-push s a)
+          (forth-push s b))))
+    (forth-def-prim!
+      state
+      "?DUP"
+      (fn
+        (s)
+        (let ((a (forth-peek s))) (when (not (= a 0)) (forth-push s a)))))
+    (forth-def-prim! state "DEPTH" (fn (s) (forth-push s (forth-depth s))))
+    (forth-def-prim!
+      state
+      "PICK"
+      (fn
+        (s)
+        (let
+          ((n (forth-pop s)) (st (get s "dstack")))
+          (if
+            (or (< n 0) (>= n (len st)))
+            (forth-error s "PICK out of range")
+            (forth-push s (nth st n))))))
+    (forth-def-prim!
+      state
+      "ROLL"
+      (fn
+        (s)
+        (let
+          ((n (forth-pop s)) (st (get s "dstack")))
+          (if
+            (or (< n 0) (>= n (len st)))
+            (forth-error s "ROLL out of range")
+            (let
+              ((taken (nth st n))
+                (before (take st n))
+                (after (drop st (+ n 1))))
+              (dict-set! s "dstack" (concat before after))
+              (forth-push s taken))))))
+    (forth-def-prim!
+      state
+      "2DUP"
+      (fn
+        (s)
+        (let
+          ((b (forth-pop s)) (a (forth-pop s)))
+          (forth-push s a)
+          (forth-push s b)
+          (forth-push s a)
+          (forth-push s b))))
+    (forth-def-prim! state "2DROP" (fn (s) (forth-pop s) (forth-pop s)))
+    (forth-def-prim!
+      state
+      "2SWAP"
+      (fn
+        (s)
+        (let
+          ((d (forth-pop s))
+            (c (forth-pop s))
+            (b (forth-pop s))
+            (a (forth-pop s)))
+          (forth-push s c)
+          (forth-push s d)
+          (forth-push s a)
+          (forth-push s b))))
+    (forth-def-prim!
+      state
+      "2OVER"
+      (fn
+        (s)
+        (let
+          ((d (forth-pop s))
+            (c (forth-pop s))
+            (b (forth-pop s))
+            (a (forth-pop s)))
+          (forth-push s a)
+          (forth-push s b)
+          (forth-push s c)
+          (forth-push s d)
+          (forth-push s a)
+          (forth-push s b))))
+    (forth-def-prim! state "+" (forth-binop (fn (a b) (+ a b))))
+    (forth-def-prim! state "-" (forth-binop (fn (a b) (- a b))))
+    (forth-def-prim! state "*" (forth-binop (fn (a b) (* a b))))
+    (forth-def-prim! state "/" (forth-binop forth-div))
+    (forth-def-prim! state "MOD" (forth-binop forth-mod))
+    (forth-def-prim!
+      state
+      "/MOD"
+      (fn
+        (s)
+        (let
+          ((b (forth-pop s)) (a (forth-pop s)))
+          (forth-push s (forth-mod a b))
+          (forth-push s (forth-div a b)))))
+    (forth-def-prim! state "NEGATE" (forth-unop (fn (a) (- 0 a))))
+    (forth-def-prim! state "ABS" (forth-unop abs))
+    (forth-def-prim!
+      state
+      "MIN"
+      (forth-binop (fn (a b) (if (< a b) a b))))
+    (forth-def-prim!
+      state
+      "MAX"
+      (forth-binop (fn (a b) (if (> a b) a b))))
+    (forth-def-prim! state "1+" (forth-unop (fn (a) (+ a 1))))
+    (forth-def-prim! state "1-" (forth-unop (fn (a) (- a 1))))
+    (forth-def-prim! state "2+" (forth-unop (fn (a) (+ a 2))))
+    (forth-def-prim! state "2-" (forth-unop (fn (a) (- a 2))))
+    (forth-def-prim! state "2*" (forth-unop (fn (a) (* a 2))))
+    (forth-def-prim! state "2/" (forth-unop (fn (a) (floor (/ a 2)))))
+    (forth-def-prim! state "=" (forth-cmp (fn (a b) (= a b))))
+    (forth-def-prim! state "<>" (forth-cmp (fn (a b) (not (= a b)))))
+    (forth-def-prim! state "<" (forth-cmp (fn (a b) (< a b))))
+    (forth-def-prim! state ">" (forth-cmp (fn (a b) (> a b))))
+    (forth-def-prim! state "<=" (forth-cmp (fn (a b) (<= a b))))
+    (forth-def-prim! state ">=" (forth-cmp (fn (a b) (>= a b))))
+    (forth-def-prim! state "0=" (forth-cmp0 (fn (a) (= a 0))))
+    (forth-def-prim! state "0<>" (forth-cmp0 (fn (a) (not (= a 0)))))
+    (forth-def-prim! state "0<" (forth-cmp0 (fn (a) (< a 0))))
+    (forth-def-prim! state "0>" (forth-cmp0 (fn (a) (> a 0))))
+    (forth-def-prim! state "AND" (forth-binop forth-bit-and))
+    (forth-def-prim! state "OR" (forth-binop forth-bit-or))
+    (forth-def-prim! state "XOR" (forth-binop forth-bit-xor))
+    (forth-def-prim! state "INVERT" (forth-unop forth-bit-invert))
+    (forth-def-prim!
+      state
+      "."
+      (fn (s) (forth-emit-str s (str (forth-pop s) " "))))
+    (forth-def-prim!
+      state
+      ".S"
+      (fn
+        (s)
+        (let
+          ((st (reverse (get s "dstack"))))
+          (forth-emit-str s "<")
+          (forth-emit-str s (str (len st)))
+          (forth-emit-str s "> ")
+          (for-each (fn (v) (forth-emit-str s (str v " "))) st))))
+    (forth-def-prim!
+      state
+      "EMIT"
+      (fn (s) (forth-emit-str s (code-char (forth-pop s)))))
+    (forth-def-prim! state "CR" (fn (s) (forth-emit-str s "\n")))
+    (forth-def-prim! state "SPACE" (fn (s) (forth-emit-str s " ")))
+    (forth-def-prim!
+      state
+      "SPACES"
+      (fn
+        (s)
+        (let
+          ((n (forth-pop s)))
+          (when
+            (> n 0)
+            (for-each (fn (_) (forth-emit-str s " ")) (range 0 n))))))
+    (forth-def-prim! state "BL" (fn (s) (forth-push s 32)))
+    state))

lib/forth/test.sh

@@ -1,62 +0,0 @@
-#!/usr/bin/env bash
-# lib/forth/test.sh — smoke-test the Forth runtime layer.
-
-set -uo pipefail
-cd "$(git rev-parse --show-toplevel)"
-
-SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
-if [ ! -x "$SX_SERVER" ]; then
-  SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
-fi
-if [ ! -x "$SX_SERVER" ]; then
-  echo "ERROR: sx_server.exe not found."
-  exit 1
-fi
-
-TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
-
-cat > "$TMPFILE" << 'EPOCHS'
-(epoch 1)
-(load "lib/forth/runtime.sx")
-(epoch 2)
-(load "lib/forth/tests/runtime.sx")
-(epoch 3)
-(eval "(list forth-test-pass forth-test-fail)")
-EPOCHS
-
-OUTPUT=$(timeout 60 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
-
-LINE=$(echo "$OUTPUT" | awk '/^\(ok-len 3 / {getline; print; exit}')
-if [ -z "$LINE" ]; then
-  LINE=$(echo "$OUTPUT" | grep -E '^\(ok 3 \([0-9]+ [0-9]+\)\)' | tail -1 \
-          | sed -E 's/^\(ok 3 //; s/\)$//')
-fi
-if [ -z "$LINE" ]; then
-  echo "ERROR: could not extract summary"
-  echo "$OUTPUT" | tail -20
-  exit 1
-fi
-
-P=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\1/')
-F=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\2/')
-TOTAL=$((P + F))
-
-if [ "$F" -eq 0 ]; then
-  echo "ok $P/$TOTAL lib/forth tests passed"
-else
-  echo "FAIL $P/$TOTAL passed, $F failed"
-  TMPFILE2=$(mktemp)
-  cat > "$TMPFILE2" << 'EPOCHS2'
-(epoch 1)
-(load "lib/forth/runtime.sx")
-(epoch 2)
-(load "lib/forth/tests/runtime.sx")
-(epoch 3)
-(eval "(map (fn (f) (list (get f :name) (get f :got) (get f :expected))) forth-test-fails)")
-EPOCHS2
-  FAILS=$(timeout 60 "$SX_SERVER" < "$TMPFILE2" 2>/dev/null | grep -E '^\(ok-len 3' -A1 | tail -1 || true)
-  echo "  Details: $FAILS"
-  rm -f "$TMPFILE2"
-fi
-
-[ "$F" -eq 0 ]

lib/forth/tests/runtime.sx

@@ -1,201 +0,0 @@
-;; lib/forth/tests/runtime.sx — Tests for lib/forth/runtime.sx
-
-(define forth-test-pass 0)
-(define forth-test-fail 0)
-(define forth-test-fails (list))
-
-(define
-  (forth-test name got expected)
-  (if
-    (= got expected)
-    (set! forth-test-pass (+ forth-test-pass 1))
-    (begin
-      (set! forth-test-fail (+ forth-test-fail 1))
-      (set! forth-test-fails (append forth-test-fails (list {:got got :expected expected :name name}))))))
-
-;; ---------------------------------------------------------------------------
-;; 1. Bitwise operations
-;; ---------------------------------------------------------------------------
-
-;; AND
-(forth-test "and 0b1100 0b1010" (forth-and 12 10) 8)
-(forth-test "and 0xFF 0x0F" (forth-and 255 15) 15)
-(forth-test "and 0 any" (forth-and 0 42) 0)
-
-;; OR
-(forth-test "or 0b1100 0b1010" (forth-or 12 10) 14)
-(forth-test "or 0 x" (forth-or 0 7) 7)
-
-;; XOR
-(forth-test "xor 0b1100 0b1010" (forth-xor 12 10) 6)
-(forth-test "xor x x" (forth-xor 42 42) 0)
-
-;; INVERT
-(forth-test "invert 0" (forth-invert 0) -1)
-(forth-test "invert -1" (forth-invert -1) 0)
-(forth-test "invert 1" (forth-invert 1) -2)
-
-;; LSHIFT RSHIFT
-(forth-test "lshift 1 3" (forth-lshift 1 3) 8)
-(forth-test "lshift 3 2" (forth-lshift 3 2) 12)
-(forth-test "rshift 8 3" (forth-rshift 8 3) 1)
-(forth-test "rshift 16 2" (forth-rshift 16 2) 4)
-
-;; 2* 2/
-(forth-test "2* 5" (forth-2* 5) 10)
-(forth-test "2/ 10" (forth-2/ 10) 5)
-(forth-test "2/ 7" (forth-2/ 7) 3)
-
-;; BIT-COUNT
-(forth-test "bit-count 0" (forth-bit-count 0) 0)
-(forth-test "bit-count 1" (forth-bit-count 1) 1)
-(forth-test "bit-count 7" (forth-bit-count 7) 3)
-(forth-test "bit-count 255" (forth-bit-count 255) 8)
-(forth-test "bit-count 256" (forth-bit-count 256) 1)
-
-;; INTEGER-LENGTH
-(forth-test "integer-length 0" (forth-integer-length 0) 0)
-(forth-test "integer-length 1" (forth-integer-length 1) 1)
-(forth-test "integer-length 4" (forth-integer-length 4) 3)
-(forth-test "integer-length 255" (forth-integer-length 255) 8)
-
-;; WITHIN
-(forth-test
-  "within 5 0 10"
-  (forth-within 5 0 10)
-  true)
-(forth-test
-  "within 0 0 10"
-  (forth-within 0 0 10)
-  true)
-(forth-test
-  "within 10 0 10"
-  (forth-within 10 0 10)
-  false)
-(forth-test
-  "within -1 0 10"
-  (forth-within -1 0 10)
-  false)
-
-;; Arithmetic ops
-(forth-test "negate 5" (forth-negate 5) -5)
-(forth-test "negate -3" (forth-negate -3) 3)
-(forth-test "abs -7" (forth-abs -7) 7)
-(forth-test "min 3 5" (forth-min 3 5) 3)
-(forth-test "max 3 5" (forth-max 3 5) 5)
-(forth-test "mod 7 3" (forth-mod 7 3) 1)
-(forth-test
-  "divmod 7 3"
-  (forth-divmod 7 3)
-  (list 1 2))
-(forth-test
-  "divmod 10 5"
-  (forth-divmod 10 5)
-  (list 0 2))
-
-;; ---------------------------------------------------------------------------
-;; 2. String buffer
-;; ---------------------------------------------------------------------------
-
-(define sb1 (forth-sb-new))
-(forth-test "sb? new" (forth-sb? sb1) true)
-(forth-test "sb? non-sb" (forth-sb? 42) false)
-(forth-test "sb value empty" (forth-sb-value sb1) "")
-(forth-test "sb length empty" (forth-sb-length sb1) 0)
-
-(forth-sb-type! sb1 "HELLO")
-(forth-test "sb type" (forth-sb-value sb1) "HELLO")
-(forth-test "sb length after type" (forth-sb-length sb1) 5)
-
-;; EMIT one char
-(define sb2 (forth-sb-new))
-(forth-sb-emit! sb2 (nth (string->list "A") 0))
-(forth-sb-emit! sb2 (nth (string->list "B") 0))
-(forth-sb-emit! sb2 (nth (string->list "C") 0))
-(forth-test "sb emit chars" (forth-sb-value sb2) "ABC")
-
-;; Emit integer
-(define sb3 (forth-sb-new))
-(forth-sb-type! sb3 "n=")
-(forth-sb-emit-int! sb3 42)
-(forth-test "sb emit-int" (forth-sb-value sb3) "n=42")
-
-(forth-sb-clear! sb1)
-(forth-test "sb clear" (forth-sb-value sb1) "")
-(forth-test "sb length after clear" (forth-sb-length sb1) 0)
-
-;; Build a word definition-style name
-(define sb4 (forth-sb-new))
-(forth-sb-type! sb4 ": ")
-(forth-sb-type! sb4 "SQUARE")
-(forth-sb-type! sb4 " DUP * ;")
-(forth-test "sb word def" (forth-sb-value sb4) ": SQUARE DUP * ;")
-
-;; ---------------------------------------------------------------------------
-;; 3. Memory / Bytevectors
-;; ---------------------------------------------------------------------------
-
-(define m1 (forth-mem-new 8))
-(forth-test "mem? yes" (forth-mem? m1) true)
-(forth-test "mem? no" (forth-mem? 42) false)
-(forth-test "mem size" (forth-mem-size m1) 8)
-(forth-test "mem cfetch zero" (forth-cfetch m1 0) 0)
-
-;; C! C@
-(forth-cstore m1 0 65)
-(forth-cstore m1 1 66)
-(forth-test "mem cstore/cfetch 0" (forth-cfetch m1 0) 65)
-(forth-test "mem cstore/cfetch 1" (forth-cfetch m1 1) 66)
-(forth-cstore m1 2 256)
-(forth-test
-  "mem cstore wraps 256→0"
-  (forth-cfetch m1 2)
-  0)
-(forth-cstore m1 2 257)
-(forth-test
-  "mem cstore wraps 257→1"
-  (forth-cfetch m1 2)
-  1)
-
-;; @ ! (32-bit LE cell)
-(define m2 (forth-mem-new 8))
-(forth-store m2 0 305419896)
-(forth-test "mem store/fetch" (forth-fetch m2 0) 305419896)
-(forth-store m2 4 1)
-(forth-test "mem fetch byte 4" (forth-cfetch m2 4) 1)
-(forth-test "mem fetch byte 5" (forth-cfetch m2 5) 0)
-
-;; FILL ERASE
-(define m3 (forth-mem-new 4))
-(forth-fill! m3 0 4 42)
-(forth-test
-  "mem fill"
-  (forth-mem->list m3 0 4)
-  (list 42 42 42 42))
-(forth-erase! m3 1 2)
-(forth-test
-  "mem erase middle"
-  (forth-mem->list m3 0 4)
-  (list 42 0 0 42))
-
-;; MOVE
-(define m4 (forth-mem-new 4))
-(forth-cstore m4 0 1)
-(forth-cstore m4 1 2)
-(forth-cstore m4 2 3)
-(define m5 (forth-mem-new 4))
-(forth-move! m4 0 m5 0 3)
-(forth-test
-  "mem move"
-  (forth-mem->list m5 0 3)
-  (list 1 2 3))
-
-;; mem->list
-(define m6 (forth-mem-new 3))
-(forth-cstore m6 0 10)
-(forth-cstore m6 1 20)
-(forth-cstore m6 2 30)
-(forth-test
-  "mem->list"
-  (forth-mem->list m6 0 3)
-  (list 10 20 30))

lib/haskell/runtime.sx

@@ -1,507 +0,0 @@
-;; lib/haskell/runtime.sx — Haskell-on-SX runtime layer
-;;
-;; Covers the Haskell primitives now reachable via SX spec:
-;;  1. Numeric type class helpers (Num / Integral / Fractional)
-;;  2. Rational numbers (dict-based: {:_rational true :num n :den d})
-;;  3. Lazy evaluation — hk-force for promises created by delay
-;;  4. Char utilities (Data.Char)
-;;  5. Data.Set wrappers
-;;  6. Data.List utilities
-;;  7. Maybe / Either ADTs
-;;  8. Tuples (lists, since list->vector unreliable in sx_server)
-;;  9. String helpers (words/lines/isPrefixOf/etc.)
-;; 10. Show helper
-
-;; ===========================================================================
-;; 1. Numeric type class helpers
-;; ===========================================================================
-
-(define hk-is-integer? integer?)
-(define hk-is-float? float?)
-(define hk-is-num? number?)
-
-;; fromIntegral — coerce integer to Float
-(define (hk-to-float x) (exact->inexact x))
-
-;; truncate / round toward zero
-(define hk-to-integer truncate)
-(define hk-from-integer (fn (n) n))
-
-;; Haskell div: floor division (rounds toward -inf)
-(define
-  (hk-div a b)
-  (let
-    ((q (quotient a b)) (r (remainder a b)))
-    (if
-      (and
-        (not (= r 0))
-        (or
-          (and (< a 0) (> b 0))
-          (and (> a 0) (< b 0))))
-      (- q 1)
-      q)))
-
-;; Haskell mod: result has same sign as divisor
-(define hk-mod modulo)
-
-;; Haskell rem: result has same sign as dividend
-(define hk-rem remainder)
-
-;; Haskell quot: truncation division
-(define hk-quot quotient)
-
-;; divMod and quotRem return pairs (lists)
-(define (hk-div-mod a b) (list (hk-div a b) (hk-mod a b)))
-(define (hk-quot-rem a b) (list (hk-quot a b) (hk-rem a b)))
-
-(define (hk-abs x) (if (< x 0) (- 0 x) x))
-(define
-  (hk-signum x)
-  (cond
-    ((> x 0) 1)
-    ((< x 0) -1)
-    (else 0)))
-
-(define hk-gcd gcd)
-(define hk-lcm lcm)
-
-(define (hk-even? n) (= (modulo n 2) 0))
-(define (hk-odd? n) (not (= (modulo n 2) 0)))
-
-;; ===========================================================================
-;; 2. Rational numbers (dict implementation — no built-in rational in sx_server)
-;; ===========================================================================
-
-(define
-  (hk-make-rational n d)
-  (let
-    ((g (gcd (hk-abs n) (hk-abs d))))
-    (if (< d 0) {:num (quotient (- 0 n) g) :den (quotient (- 0 d) g) :_rational true} {:num (quotient n g) :den (quotient d g) :_rational true})))
-
-(define
-  (hk-rational? x)
-  (and (dict? x) (not (= (get x :_rational) nil))))
-(define (hk-numerator r) (get r :num))
-(define (hk-denominator r) (get r :den))
-
-(define
-  (hk-rational-add r1 r2)
-  (hk-make-rational
-    (+
-      (* (hk-numerator r1) (hk-denominator r2))
-      (* (hk-numerator r2) (hk-denominator r1)))
-    (* (hk-denominator r1) (hk-denominator r2))))
-
-(define
-  (hk-rational-sub r1 r2)
-  (hk-make-rational
-    (-
-      (* (hk-numerator r1) (hk-denominator r2))
-      (* (hk-numerator r2) (hk-denominator r1)))
-    (* (hk-denominator r1) (hk-denominator r2))))
-
-(define
-  (hk-rational-mul r1 r2)
-  (hk-make-rational
-    (* (hk-numerator r1) (hk-numerator r2))
-    (* (hk-denominator r1) (hk-denominator r2))))
-
-(define
-  (hk-rational-div r1 r2)
-  (hk-make-rational
-    (* (hk-numerator r1) (hk-denominator r2))
-    (* (hk-denominator r1) (hk-numerator r2))))
-
-(define
-  (hk-rational-to-float r)
-  (exact->inexact (/ (hk-numerator r) (hk-denominator r))))
-
-(define (hk-show-rational r) (str (hk-numerator r) "%" (hk-denominator r)))
-
-;; ===========================================================================
-;; 3. Lazy evaluation — promises (created via SX delay)
-;; ===========================================================================
-
-(define
-  (hk-force p)
-  (if
-    (and (dict? p) (not (= (get p :_promise) nil)))
-    (if (get p :forced) (get p :value) ((get p :thunk)))
-    p))
-
-;; ===========================================================================
-;; 4. Char utilities (Data.Char)
-;; ===========================================================================
-
-(define hk-ord char->integer)
-(define hk-chr integer->char)
-
-;; Inline ASCII predicates — char-alphabetic?/char-numeric? unreliable in sx_server
-(define
-  (hk-is-alpha? c)
-  (let
-    ((n (char->integer c)))
-    (or
-      (and (>= n 65) (<= n 90))
-      (and (>= n 97) (<= n 122)))))
-
-(define
-  (hk-is-digit? c)
-  (let ((n (char->integer c))) (and (>= n 48) (<= n 57))))
-
-(define
-  (hk-is-alnum? c)
-  (let
-    ((n (char->integer c)))
-    (or
-      (and (>= n 48) (<= n 57))
-      (and (>= n 65) (<= n 90))
-      (and (>= n 97) (<= n 122)))))
-
-(define
-  (hk-is-upper? c)
-  (let ((n (char->integer c))) (and (>= n 65) (<= n 90))))
-
-(define
-  (hk-is-lower? c)
-  (let ((n (char->integer c))) (and (>= n 97) (<= n 122))))
-
-(define
-  (hk-is-space? c)
-  (let
-    ((n (char->integer c)))
-    (or
-      (= n 32)
-      (= n 9)
-      (= n 10)
-      (= n 13)
-      (= n 12)
-      (= n 11))))
-
-(define hk-to-upper char-upcase)
-(define hk-to-lower char-downcase)
-
-;; digitToInt: '0'-'9' → 0-9, 'a'-'f'/'A'-'F' → 10-15
-(define
-  (hk-digit-to-int c)
-  (let
-    ((n (char->integer c)))
-    (cond
-      ((and (>= n 48) (<= n 57)) (- n 48))
-      ((and (>= n 65) (<= n 70)) (- n 55))
-      ((and (>= n 97) (<= n 102)) (- n 87))
-      (else (error (str "hk-digit-to-int: not a hex digit: " c))))))
-
-;; intToDigit: 0-15 → char
-(define
-  (hk-int-to-digit n)
-  (cond
-    ((and (>= n 0) (<= n 9))
-      (integer->char (+ n 48)))
-    ((and (>= n 10) (<= n 15))
-      (integer->char (+ n 87)))
-    (else (error (str "hk-int-to-digit: out of range: " n)))))
-
-;; ===========================================================================
-;; 5. Data.Set wrappers
-;; ===========================================================================
-
-(define (hk-set-empty) (make-set))
-(define hk-set? set?)
-(define hk-set-member? set-member?)
-
-(define (hk-set-insert x s) (begin (set-add! s x) s))
-
-(define (hk-set-delete x s) (begin (set-remove! s x) s))
-
-(define hk-set-union set-union)
-(define hk-set-intersection set-intersection)
-(define hk-set-difference set-difference)
-(define hk-set-from-list list->set)
-(define hk-set-to-list set->list)
-(define (hk-set-null? s) (= (len (set->list s)) 0))
-(define (hk-set-size s) (len (set->list s)))
-
-(define (hk-set-singleton x) (let ((s (make-set))) (set-add! s x) s))
-
-;; ===========================================================================
-;; 6. Data.List utilities
-;; ===========================================================================
-
-(define hk-head first)
-(define hk-tail rest)
-(define (hk-null? lst) (= (len lst) 0))
-(define hk-length len)
-
-(define
-  (hk-take n lst)
-  (if
-    (or (= n 0) (= (len lst) 0))
-    (list)
-    (cons (first lst) (hk-take (- n 1) (rest lst)))))
-
-(define
-  (hk-drop n lst)
-  (if
-    (or (= n 0) (= (len lst) 0))
-    lst
-    (hk-drop (- n 1) (rest lst))))
-
-(define
-  (hk-take-while pred lst)
-  (if
-    (or (= (len lst) 0) (not (pred (first lst))))
-    (list)
-    (cons (first lst) (hk-take-while pred (rest lst)))))
-
-(define
-  (hk-drop-while pred lst)
-  (if
-    (or (= (len lst) 0) (not (pred (first lst))))
-    lst
-    (hk-drop-while pred (rest lst))))
-
-(define
-  (hk-zip a b)
-  (if
-    (or (= (len a) 0) (= (len b) 0))
-    (list)
-    (cons (list (first a) (first b)) (hk-zip (rest a) (rest b)))))
-
-(define
-  (hk-zip-with f a b)
-  (if
-    (or (= (len a) 0) (= (len b) 0))
-    (list)
-    (cons (f (first a) (first b)) (hk-zip-with f (rest a) (rest b)))))
-
-(define
-  (hk-unzip pairs)
-  (list
-    (map (fn (p) (first p)) pairs)
-    (map (fn (p) (nth p 1)) pairs)))
-
-(define
-  (hk-elem x lst)
-  (cond
-    ((= (len lst) 0) false)
-    ((= x (first lst)) true)
-    (else (hk-elem x (rest lst)))))
-
-(define (hk-not-elem x lst) (not (hk-elem x lst)))
-
-(define
-  (hk-nub lst)
-  (letrec
-    ((go (fn (seen acc items) (if (= (len items) 0) (reverse acc) (let ((h (first items)) (t (rest items))) (if (hk-elem h seen) (go seen acc t) (go (cons h seen) (cons h acc) t)))))))
-    (go (list) (list) lst)))
-
-(define (hk-sum lst) (reduce + 0 lst))
-(define (hk-product lst) (reduce * 1 lst))
-
-(define
-  (hk-maximum lst)
-  (reduce (fn (a b) (if (> a b) a b)) (first lst) (rest lst)))
-
-(define
-  (hk-minimum lst)
-  (reduce (fn (a b) (if (< a b) a b)) (first lst) (rest lst)))
-
-(define (hk-concat lsts) (reduce append (list) lsts))
-
-(define (hk-concat-map f lst) (hk-concat (map f lst)))
-
-(define hk-sort sort)
-
-(define
-  (hk-span pred lst)
-  (list (hk-take-while pred lst) (hk-drop-while pred lst)))
-
-(define (hk-break pred lst) (hk-span (fn (x) (not (pred x))) lst))
-
-(define
-  (hk-foldl f acc lst)
-  (if
-    (= (len lst) 0)
-    acc
-    (hk-foldl f (f acc (first lst)) (rest lst))))
-
-(define
-  (hk-foldr f z lst)
-  (if
-    (= (len lst) 0)
-    z
-    (f (first lst) (hk-foldr f z (rest lst)))))
-
-(define
-  (hk-scanl f acc lst)
-  (if
-    (= (len lst) 0)
-    (list acc)
-    (cons acc (hk-scanl f (f acc (first lst)) (rest lst)))))
-
-(define
-  (hk-replicate n x)
-  (if (= n 0) (list) (cons x (hk-replicate (- n 1) x))))
-
-(define
-  (hk-intersperse sep lst)
-  (if
-    (or (= (len lst) 0) (= (len lst) 1))
-    lst
-    (cons (first lst) (cons sep (hk-intersperse sep (rest lst))))))
-
-;; ===========================================================================
-;; 7. Maybe / Either ADTs
-;; ===========================================================================
-
-(define hk-nothing {:_maybe true :_tag "nothing"})
-(define (hk-just x) {:_maybe true :value x :_tag "just"})
-(define (hk-is-nothing? m) (= (get m :_tag) "nothing"))
-(define (hk-is-just? m) (= (get m :_tag) "just"))
-(define (hk-from-just m) (get m :value))
-(define (hk-from-maybe def m) (if (hk-is-nothing? m) def (hk-from-just m)))
-(define
-  (hk-maybe def f m)
-  (if (hk-is-nothing? m) def (f (hk-from-just m))))
-
-(define (hk-left x) {:value x :_either true :_tag "left"})
-(define (hk-right x) {:value x :_either true :_tag "right"})
-(define (hk-is-left? e) (= (get e :_tag) "left"))
-(define (hk-is-right? e) (= (get e :_tag) "right"))
-(define (hk-from-left e) (get e :value))
-(define (hk-from-right e) (get e :value))
-(define
-  (hk-either f g e)
-  (if (hk-is-left? e) (f (hk-from-left e)) (g (hk-from-right e))))
-
-;; ===========================================================================
-;; 8. Tuples (lists — list->vector unreliable in sx_server)
-;; ===========================================================================
-
-(define (hk-pair a b) (list a b))
-(define hk-fst first)
-(define (hk-snd t) (nth t 1))
-
-(define (hk-triple a b c) (list a b c))
-(define hk-fst3 first)
-(define (hk-snd3 t) (nth t 1))
-(define (hk-thd3 t) (nth t 2))
-
-(define (hk-curry f) (fn (a) (fn (b) (f a b))))
-(define (hk-uncurry f) (fn (p) (f (hk-fst p) (hk-snd p))))
-
-;; ===========================================================================
-;; 9. String helpers (Data.List / Data.Char for strings)
-;; ===========================================================================
-
-;; words: split on whitespace
-(define
-  (hk-words s)
-  (letrec
-    ((slen (len s))
-      (skip-ws
-        (fn
-          (i)
-          (if
-            (>= i slen)
-            (list)
-            (let
-              ((c (substring s i (+ i 1))))
-              (if
-                (or (= c " ") (= c "\t") (= c "\n"))
-                (skip-ws (+ i 1))
-                (collect-word i (+ i 1)))))))
-      (collect-word
-        (fn
-          (start i)
-          (if
-            (>= i slen)
-            (list (substring s start i))
-            (let
-              ((c (substring s i (+ i 1))))
-              (if
-                (or (= c " ") (= c "\t") (= c "\n"))
-                (cons (substring s start i) (skip-ws (+ i 1)))
-                (collect-word start (+ i 1))))))))
-    (skip-ws 0)))
-
-;; unwords: join with spaces
-(define
-  (hk-unwords lst)
-  (if
-    (= (len lst) 0)
-    ""
-    (reduce (fn (a b) (str a " " b)) (first lst) (rest lst))))
-
-;; lines: split on newline
-(define
-  (hk-lines s)
-  (letrec
-    ((slen (len s))
-      (go
-        (fn
-          (start i acc)
-          (if
-            (>= i slen)
-            (reverse (cons (substring s start i) acc))
-            (if
-              (= (substring s i (+ i 1)) "\n")
-              (go
-                (+ i 1)
-                (+ i 1)
-                (cons (substring s start i) acc))
-              (go start (+ i 1) acc))))))
-    (if (= slen 0) (list) (go 0 0 (list)))))
-
-;; unlines: join, each with trailing newline
-(define (hk-unlines lst) (reduce (fn (a b) (str a b "\n")) "" lst))
-
-;; isPrefixOf
-(define
-  (hk-is-prefix-of pre s)
-  (and (<= (len pre) (len s)) (= pre (substring s 0 (len pre)))))
-
-;; isSuffixOf
-(define
-  (hk-is-suffix-of suf s)
-  (let
-    ((sl (len suf)) (tl (len s)))
-    (and (<= sl tl) (= suf (substring s (- tl sl) tl)))))
-
-;; isInfixOf — linear scan
-(define
-  (hk-is-infix-of pat s)
-  (let
-    ((plen (len pat)) (slen (len s)))
-    (letrec
-      ((go (fn (i) (if (> (+ i plen) slen) false (if (= pat (substring s i (+ i plen))) true (go (+ i 1)))))))
-      (if (= plen 0) true (go 0)))))
-
-;; ===========================================================================
-;; 10. Show helper
-;; ===========================================================================
-
-(define
-  (hk-show x)
-  (cond
-    ((= x nil) "Nothing")
-    ((= x true) "True")
-    ((= x false) "False")
-    ((hk-rational? x) (hk-show-rational x))
-    ((integer? x) (str x))
-    ((float? x) (str x))
-    ((= (type-of x) "string") (str "\"" x "\""))
-    ((= (type-of x) "char") (str "'" (str x) "'"))
-    ((list? x)
-      (str
-        "["
-        (if
-          (= (len x) 0)
-          ""
-          (reduce
-            (fn (a b) (str a "," (hk-show b)))
-            (hk-show (first x))
-            (rest x)))
-        "]"))
-    (else (str x))))

lib/haskell/test.sh

@@ -46,7 +46,6 @@ for FILE in "${FILES[@]}"; do
   cat > "$TMPFILE" <<EPOCHS
 (epoch 1)
 (load "lib/haskell/tokenizer.sx")
-(load "lib/haskell/runtime.sx")
 (epoch 2)
 (load "$FILE")
 (epoch 3)
@@ -82,7 +81,6 @@ EPOCHS
     cat > "$TMPFILE2" <<EPOCHS
 (epoch 1)
 (load "lib/haskell/tokenizer.sx")
-(load "lib/haskell/runtime.sx")
 (epoch 2)
 (load "$FILE")
 (epoch 3)

lib/haskell/tests/runtime.sx

@@ -1,451 +0,0 @@
-;; lib/haskell/tests/runtime.sx — smoke-tests for lib/haskell/runtime.sx
-;;
-;; Uses the same hk-test framework as tests/parse.sx.
-;; Loaded by test.sh after: tokenizer.sx + runtime.sx are pre-loaded.
-
-;; ---------------------------------------------------------------------------
-;; Test framework boilerplate (mirrors parse.sx)
-;; ---------------------------------------------------------------------------
-
-(define hk-test-pass 0)
-(define hk-test-fail 0)
-(define hk-test-fails (list))
-
-(define
-  (hk-test name actual expected)
-  (if
-    (= actual expected)
-    (set! hk-test-pass (+ hk-test-pass 1))
-    (do
-      (set! hk-test-fail (+ hk-test-fail 1))
-      (append! hk-test-fails {:actual actual :expected expected :name name}))))
-
-;; ---------------------------------------------------------------------------
-;; 1. Numeric type class helpers
-;; ---------------------------------------------------------------------------
-
-(hk-test "is-integer? int" (hk-is-integer? 42) true)
-(hk-test "is-integer? float" (hk-is-integer? 1.5) false)
-(hk-test "is-float? float" (hk-is-float? 3.14) true)
-(hk-test "is-float? int" (hk-is-float? 3) false)
-(hk-test "is-num? int" (hk-is-num? 10) true)
-(hk-test "is-num? float" (hk-is-num? 1) true)
-
-(hk-test "to-float" (hk-to-float 5) 5)
-(hk-test "to-integer trunc" (hk-to-integer 3.7) 3)
-
-(hk-test "div pos pos" (hk-div 7 2) 3)
-(hk-test "div neg pos" (hk-div -7 2) -4)
-(hk-test "div pos neg" (hk-div 7 -2) -4)
-(hk-test "div neg neg" (hk-div -7 -2) 3)
-(hk-test "div exact" (hk-div 6 2) 3)
-
-(hk-test "mod pos pos" (hk-mod 10 3) 1)
-(hk-test "mod neg pos" (hk-mod -7 3) 2)
-(hk-test "rem pos pos" (hk-rem 10 3) 1)
-(hk-test "rem neg pos" (hk-rem -7 3) -1)
-
-(hk-test "abs pos" (hk-abs 5) 5)
-(hk-test "abs neg" (hk-abs -5) 5)
-(hk-test "signum pos" (hk-signum 42) 1)
-(hk-test "signum neg" (hk-signum -7) -1)
-(hk-test "signum zero" (hk-signum 0) 0)
-
-(hk-test "gcd" (hk-gcd 12 8) 4)
-(hk-test "lcm" (hk-lcm 4 6) 12)
-(hk-test "even?" (hk-even? 4) true)
-(hk-test "even? odd" (hk-even? 3) false)
-(hk-test "odd?" (hk-odd? 7) true)
-
-;; ---------------------------------------------------------------------------
-;; 2. Rational numbers
-;; ---------------------------------------------------------------------------
-
-(let
-  ((r (hk-make-rational 1 2)))
-  (do
-    (hk-test "rational?" (hk-rational? r) true)
-    (hk-test "numerator" (hk-numerator r) 1)
-    (hk-test "denominator" (hk-denominator r) 2)))
-
-(let
-  ((r (hk-make-rational 2 4)))
-  (do
-    (hk-test "rat normalise num" (hk-numerator r) 1)
-    (hk-test "rat normalise den" (hk-denominator r) 2)))
-
-(let
-  ((sum (hk-rational-add (hk-make-rational 1 2) (hk-make-rational 1 3))))
-  (do
-    (hk-test "rat-add num" (hk-numerator sum) 5)
-    (hk-test "rat-add den" (hk-denominator sum) 6)))
-
-(hk-test
-  "rat-to-float"
-  (hk-rational-to-float (hk-make-rational 1 2))
-  0.5)
-(hk-test "rational? int" (hk-rational? 42) false)
-
-;; ---------------------------------------------------------------------------
-;; 3. Lazy evaluation (promises via SX delay)
-;; ---------------------------------------------------------------------------
-
-(let
-  ((p (delay 42)))
-  (hk-test "force promise" (hk-force p) 42))
-
-(hk-test "force non-promise" (hk-force 99) 99)
-
-;; ---------------------------------------------------------------------------
-;; 4. Char utilities — compare via hk-ord to avoid = on char type
-;; ---------------------------------------------------------------------------
-
-(hk-test "ord A" (hk-ord (integer->char 65)) 65)
-(hk-test "chr 65" (hk-ord (hk-chr 65)) 65)
-(hk-test "is-alpha? A" (hk-is-alpha? (integer->char 65)) true)
-(hk-test "is-alpha? 0" (hk-is-alpha? (integer->char 48)) false)
-(hk-test "is-digit? 5" (hk-is-digit? (integer->char 53)) true)
-(hk-test "is-digit? A" (hk-is-digit? (integer->char 65)) false)
-(hk-test "is-upper? A" (hk-is-upper? (integer->char 65)) true)
-(hk-test "is-upper? a" (hk-is-upper? (integer->char 97)) false)
-(hk-test "is-lower? a" (hk-is-lower? (integer->char 97)) true)
-(hk-test "is-space? spc" (hk-is-space? (integer->char 32)) true)
-(hk-test "is-space? A" (hk-is-space? (integer->char 65)) false)
-(hk-test
-  "to-upper a"
-  (hk-ord (hk-to-upper (integer->char 97)))
-  65)
-(hk-test
-  "to-lower A"
-  (hk-ord (hk-to-lower (integer->char 65)))
-  97)
-(hk-test
-  "digit-to-int 0"
-  (hk-digit-to-int (integer->char 48))
-  0)
-(hk-test
-  "digit-to-int 9"
-  (hk-digit-to-int (integer->char 57))
-  9)
-(hk-test
-  "digit-to-int a"
-  (hk-digit-to-int (integer->char 97))
-  10)
-(hk-test
-  "digit-to-int F"
-  (hk-digit-to-int (integer->char 70))
-  15)
-(hk-test "int-to-digit 0" (hk-ord (hk-int-to-digit 0)) 48)
-(hk-test "int-to-digit 10" (hk-ord (hk-int-to-digit 10)) 97)
-
-;; ---------------------------------------------------------------------------
-;; 5. Data.Set
-;; ---------------------------------------------------------------------------
-
-(hk-test "set-empty is set?" (hk-set? (hk-set-empty)) true)
-(hk-test "set-null? empty" (hk-set-null? (hk-set-empty)) true)
-
-(let
-  ((s (hk-set-singleton 42)))
-  (do
-    (hk-test "singleton member" (hk-set-member? 42 s) true)
-    (hk-test "singleton size" (hk-set-size s) 1)))
-
-(let
-  ((s (hk-set-from-list (list 1 2 3))))
-  (do
-    (hk-test "from-list member" (hk-set-member? 2 s) true)
-    (hk-test "from-list absent" (hk-set-member? 9 s) false)
-    (hk-test "from-list size" (hk-set-size s) 3)))
-
-;; ---------------------------------------------------------------------------
-;; 6. Data.List
-;; ---------------------------------------------------------------------------
-
-(hk-test "head" (hk-head (list 1 2 3)) 1)
-(hk-test
-  "tail length"
-  (len (hk-tail (list 1 2 3)))
-  2)
-(hk-test "null? empty" (hk-null? (list)) true)
-(hk-test "null? non-empty" (hk-null? (list 1)) false)
-(hk-test
-  "length"
-  (hk-length (list 1 2 3))
-  3)
-
-(hk-test
-  "take 2"
-  (hk-take 2 (list 1 2 3))
-  (list 1 2))
-(hk-test "take 0" (hk-take 0 (list 1 2)) (list))
-(hk-test
-  "take overflow"
-  (hk-take 5 (list 1 2))
-  (list 1 2))
-(hk-test
-  "drop 1"
-  (hk-drop 1 (list 1 2 3))
-  (list 2 3))
-(hk-test
-  "drop 0"
-  (hk-drop 0 (list 1 2))
-  (list 1 2))
-
-(hk-test
-  "take-while"
-  (hk-take-while
-    (fn (x) (< x 3))
-    (list 1 2 3 4))
-  (list 1 2))
-(hk-test
-  "drop-while"
-  (hk-drop-while
-    (fn (x) (< x 3))
-    (list 1 2 3 4))
-  (list 3 4))
-
-(hk-test
-  "zip"
-  (hk-zip (list 1 2) (list 3 4))
-  (list (list 1 3) (list 2 4)))
-(hk-test
-  "zip uneven"
-  (hk-zip
-    (list 1 2 3)
-    (list 4 5))
-  (list (list 1 4) (list 2 5)))
-
-(hk-test
-  "zip-with +"
-  (hk-zip-with
-    +
-    (list 1 2 3)
-    (list 10 20 30))
-  (list 11 22 33))
-
-(hk-test
-  "unzip fst"
-  (first
-    (hk-unzip
-      (list (list 1 3) (list 2 4))))
-  (list 1 2))
-(hk-test
-  "unzip snd"
-  (nth
-    (hk-unzip
-      (list (list 1 3) (list 2 4)))
-    1)
-  (list 3 4))
-
-(hk-test
-  "elem hit"
-  (hk-elem 2 (list 1 2 3))
-  true)
-(hk-test
-  "elem miss"
-  (hk-elem 9 (list 1 2 3))
-  false)
-(hk-test
-  "not-elem"
-  (hk-not-elem 9 (list 1 2 3))
-  true)
-
-(hk-test
-  "nub"
-  (hk-nub (list 1 2 1 3 2))
-  (list 1 2 3))
-
-(hk-test
-  "sum"
-  (hk-sum (list 1 2 3 4))
-  10)
-(hk-test
-  "product"
-  (hk-product (list 1 2 3 4))
-  24)
-(hk-test
-  "maximum"
-  (hk-maximum (list 3 1 4 1 5))
-  5)
-(hk-test
-  "minimum"
-  (hk-minimum (list 3 1 4 1 5))
-  1)
-
-(hk-test
-  "concat"
-  (hk-concat
-    (list (list 1 2) (list 3 4)))
-  (list 1 2 3 4))
-(hk-test
-  "concat-map"
-  (hk-concat-map
-    (fn (x) (list x (* x x)))
-    (list 1 2 3))
-  (list 1 1 2 4 3 9))
-
-(hk-test
-  "sort"
-  (hk-sort (list 3 1 4 1 5))
-  (list 1 1 3 4 5))
-(hk-test
-  "replicate"
-  (hk-replicate 3 0)
-  (list 0 0 0))
-(hk-test "replicate 0" (hk-replicate 0 99) (list))
-
-(hk-test
-  "intersperse"
-  (hk-intersperse 0 (list 1 2 3))
-  (list 1 0 2 0 3))
-(hk-test
-  "intersperse 1"
-  (hk-intersperse 0 (list 1))
-  (list 1))
-(hk-test "intersperse empty" (hk-intersperse 0 (list)) (list))
-
-(hk-test
-  "span"
-  (hk-span
-    (fn (x) (< x 3))
-    (list 1 2 3 4))
-  (list (list 1 2) (list 3 4)))
-(hk-test
-  "break"
-  (hk-break
-    (fn (x) (>= x 3))
-    (list 1 2 3 4))
-  (list (list 1 2) (list 3 4)))
-
-(hk-test
-  "foldl"
-  (hk-foldl
-    (fn (a b) (- a b))
-    10
-    (list 1 2 3))
-  4)
-(hk-test
-  "foldr"
-  (hk-foldr cons (list) (list 1 2 3))
-  (list 1 2 3))
-
-(hk-test
-  "scanl"
-  (hk-scanl + 0 (list 1 2 3))
-  (list 0 1 3 6))
-
-;; ---------------------------------------------------------------------------
-;; 7. Maybe / Either
-;; ---------------------------------------------------------------------------
-
-(hk-test "nothing is-nothing?" (hk-is-nothing? hk-nothing) true)
-(hk-test "nothing is-just?" (hk-is-just? hk-nothing) false)
-(hk-test "just is-just?" (hk-is-just? (hk-just 42)) true)
-(hk-test "just is-nothing?" (hk-is-nothing? (hk-just 42)) false)
-(hk-test "from-just" (hk-from-just (hk-just 99)) 99)
-(hk-test
-  "from-maybe nothing"
-  (hk-from-maybe 0 hk-nothing)
-  0)
-(hk-test
-  "from-maybe just"
-  (hk-from-maybe 0 (hk-just 42))
-  42)
-(hk-test
-  "maybe nothing"
-  (hk-maybe 0 (fn (x) (* x 2)) hk-nothing)
-  0)
-(hk-test
-  "maybe just"
-  (hk-maybe 0 (fn (x) (* x 2)) (hk-just 5))
-  10)
-
-(hk-test "left is-left?" (hk-is-left? (hk-left "e")) true)
-(hk-test "right is-right?" (hk-is-right? (hk-right 42)) true)
-(hk-test "from-right" (hk-from-right (hk-right 7)) 7)
-(hk-test
-  "either left"
-  (hk-either (fn (x) (str "L" x)) (fn (x) (str "R" x)) (hk-left "err"))
-  "Lerr")
-(hk-test
-  "either right"
-  (hk-either
-    (fn (x) (str "L" x))
-    (fn (x) (str "R" x))
-    (hk-right 42))
-  "R42")
-
-;; ---------------------------------------------------------------------------
-;; 8. Tuples
-;; ---------------------------------------------------------------------------
-
-(hk-test "pair" (hk-pair 1 2) (list 1 2))
-(hk-test "fst" (hk-fst (hk-pair 3 4)) 3)
-(hk-test "snd" (hk-snd (hk-pair 3 4)) 4)
-(hk-test
-  "triple"
-  (hk-triple 1 2 3)
-  (list 1 2 3))
-(hk-test
-  "fst3"
-  (hk-fst3 (hk-triple 7 8 9))
-  7)
-(hk-test
-  "thd3"
-  (hk-thd3 (hk-triple 7 8 9))
-  9)
-
-(hk-test "curry" ((hk-curry +) 3 4) 7)
-(hk-test
-  "uncurry"
-  ((hk-uncurry (fn (a b) (* a b))) (list 3 4))
-  12)
-
-;; ---------------------------------------------------------------------------
-;; 9. String helpers
-;; ---------------------------------------------------------------------------
-
-(hk-test "words" (hk-words "hello world") (list "hello" "world"))
-(hk-test "words leading ws" (hk-words "  foo bar") (list "foo" "bar"))
-(hk-test "words empty" (hk-words "") (list))
-(hk-test "unwords" (hk-unwords (list "a" "b" "c")) "a b c")
-(hk-test "unwords single" (hk-unwords (list "x")) "x")
-
-(hk-test "lines" (hk-lines "a\nb\nc") (list "a" "b" "c"))
-(hk-test "lines single" (hk-lines "hello") (list "hello"))
-(hk-test "unlines" (hk-unlines (list "a" "b")) "a\nb\n")
-
-(hk-test "is-prefix-of yes" (hk-is-prefix-of "he" "hello") true)
-(hk-test "is-prefix-of no" (hk-is-prefix-of "wo" "hello") false)
-(hk-test "is-prefix-of eq" (hk-is-prefix-of "hi" "hi") true)
-(hk-test "is-prefix-of empty" (hk-is-prefix-of "" "hi") true)
-
-(hk-test "is-suffix-of yes" (hk-is-suffix-of "lo" "hello") true)
-(hk-test "is-suffix-of no" (hk-is-suffix-of "he" "hello") false)
-(hk-test "is-suffix-of empty" (hk-is-suffix-of "" "hi") true)
-
-(hk-test "is-infix-of yes" (hk-is-infix-of "ell" "hello") true)
-(hk-test "is-infix-of no" (hk-is-infix-of "xyz" "hello") false)
-(hk-test "is-infix-of empty" (hk-is-infix-of "" "hello") true)
-
-;; ---------------------------------------------------------------------------
-;; 10. Show
-;; ---------------------------------------------------------------------------
-
-(hk-test "show nil" (hk-show nil) "Nothing")
-(hk-test "show true" (hk-show true) "True")
-(hk-test "show false" (hk-show false) "False")
-(hk-test "show int" (hk-show 42) "42")
-(hk-test "show string" (hk-show "hi") "\"hi\"")
-(hk-test
-  "show list"
-  (hk-show (list 1 2 3))
-  "[1,2,3]")
-(hk-test "show empty list" (hk-show (list)) "[]")
-
-;; ---------------------------------------------------------------------------
-;; Summary (required by test.sh — last expression is the return value)
-;; ---------------------------------------------------------------------------
-
-(list hk-test-pass hk-test-fail)

lib/js/conformance.sh

@@ -49,8 +49,6 @@ trap "rm -f $TMPFILE" EXIT
   echo '(load "lib/js/transpile.sx")'
   echo '(epoch 5)'
   echo '(load "lib/js/runtime.sx")'
-  echo '(epoch 6)'
-  echo '(load "lib/js/regex.sx")'
 
   epoch=100
   for f in "${FIXTURES[@]}"; do

lib/js/regex.sx

@@ -1,943 +0,0 @@
-;; lib/js/regex.sx — pure-SX recursive backtracking regex engine
-;;
-;; Installed via (js-regex-platform-override! ...) at load time.
-;; Covers: character classes (\d\w\s . [abc] [^abc] [a-z]),
-;;   anchors (^ $ \b \B), quantifiers (* + ? {n,m} lazy variants),
-;;   groups (capturing + non-capturing), alternation (a|b),
-;;   flags: i (case-insensitive), g (global), m (multiline).
-;;
-;; Architecture:
-;;   1. rx-parse-pattern  — pattern string → compiled node list
-;;   2. rx-match-nodes    — recursive backtracker
-;;   3. rx-exec / rx-test — public interface
-;;   4. Install as {:test rx-test :exec rx-exec}
-
-;; ── Utilities ─────────────────────────────────────────────────────
-
-(define
-  rx-char-at
-  (fn (s i) (if (and (>= i 0) (< i (len s))) (char-at s i) "")))
-
-(define
-  rx-digit?
-  (fn
-    (c)
-    (and (not (= c "")) (>= (char-code c) 48) (<= (char-code c) 57))))
-
-(define
-  rx-word?
-  (fn
-    (c)
-    (and
-      (not (= c ""))
-      (or
-        (and (>= (char-code c) 65) (<= (char-code c) 90))
-        (and (>= (char-code c) 97) (<= (char-code c) 122))
-        (and (>= (char-code c) 48) (<= (char-code c) 57))
-        (= c "_")))))
-
-(define
-  rx-space?
-  (fn
-    (c)
-    (or (= c " ") (= c "\t") (= c "\n") (= c "\r") (= c "\\f") (= c ""))))
-
-(define rx-newline? (fn (c) (or (= c "\n") (= c "\r"))))
-
-(define
-  rx-downcase-char
-  (fn
-    (c)
-    (let
-      ((cc (char-code c)))
-      (if (and (>= cc 65) (<= cc 90)) (char-from-code (+ cc 32)) c))))
-
-(define
-  rx-char-eq?
-  (fn
-    (a b ci?)
-    (if ci? (= (rx-downcase-char a) (rx-downcase-char b)) (= a b))))
-
-(define
-  rx-parse-int
-  (fn
-    (pat i acc)
-    (let
-      ((c (rx-char-at pat i)))
-      (if
-        (rx-digit? c)
-        (rx-parse-int pat (+ i 1) (+ (* acc 10) (- (char-code c) 48)))
-        (list acc i)))))
-
-(define
-  rx-hex-digit-val
-  (fn
-    (c)
-    (cond
-      ((and (>= (char-code c) 48) (<= (char-code c) 57))
-        (- (char-code c) 48))
-      ((and (>= (char-code c) 65) (<= (char-code c) 70))
-        (+ 10 (- (char-code c) 65)))
-      ((and (>= (char-code c) 97) (<= (char-code c) 102))
-        (+ 10 (- (char-code c) 97)))
-      (else -1))))
-
-(define
-  rx-parse-hex-n
-  (fn
-    (pat i n acc)
-    (if
-      (= n 0)
-      (list (char-from-code acc) i)
-      (let
-        ((v (rx-hex-digit-val (rx-char-at pat i))))
-        (if
-          (< v 0)
-          (list (char-from-code acc) i)
-          (rx-parse-hex-n pat (+ i 1) (- n 1) (+ (* acc 16) v)))))))
-
-;; ── Pattern compiler ──────────────────────────────────────────────
-
-;; Node types (stored in dicts with "__t__" key):
-;;   literal  : {:__t__ "literal" :__c__ char}
-;;   any      : {:__t__ "any"}
-;;   class-d  : {:__t__ "class-d"  :__neg__ bool}
-;;   class-w  : {:__t__ "class-w"  :__neg__ bool}
-;;   class-s  : {:__t__ "class-s"  :__neg__ bool}
-;;   char-class: {:__t__ "char-class" :__neg__ bool :__items__ list}
-;;   anchor-start / anchor-end / anchor-word / anchor-nonword
-;;   quant    : {:__t__ "quant" :__node__ n :__min__ m :__max__ mx :__lazy__ bool}
-;;   group    : {:__t__ "group" :__idx__ i :__nodes__ list}
-;;   ncgroup  : {:__t__ "ncgroup" :__nodes__ list}
-;;   alt      : {:__t__ "alt" :__branches__ list-of-node-lists}
-
-;; parse one escape after `\`, returns (node new-i)
-(define
-  rx-parse-escape
-  (fn
-    (pat i)
-    (let
-      ((c (rx-char-at pat i)))
-      (cond
-        ((= c "d") (list (dict "__t__" "class-d" "__neg__" false) (+ i 1)))
-        ((= c "D") (list (dict "__t__" "class-d" "__neg__" true) (+ i 1)))
-        ((= c "w") (list (dict "__t__" "class-w" "__neg__" false) (+ i 1)))
-        ((= c "W") (list (dict "__t__" "class-w" "__neg__" true) (+ i 1)))
-        ((= c "s") (list (dict "__t__" "class-s" "__neg__" false) (+ i 1)))
-        ((= c "S") (list (dict "__t__" "class-s" "__neg__" true) (+ i 1)))
-        ((= c "b") (list (dict "__t__" "anchor-word") (+ i 1)))
-        ((= c "B") (list (dict "__t__" "anchor-nonword") (+ i 1)))
-        ((= c "n") (list (dict "__t__" "literal" "__c__" "\n") (+ i 1)))
-        ((= c "r") (list (dict "__t__" "literal" "__c__" "\r") (+ i 1)))
-        ((= c "t") (list (dict "__t__" "literal" "__c__" "\t") (+ i 1)))
-        ((= c "f") (list (dict "__t__" "literal" "__c__" "\\f") (+ i 1)))
-        ((= c "v") (list (dict "__t__" "literal" "__c__" "") (+ i 1)))
-        ((= c "u")
-          (let
-            ((res (rx-parse-hex-n pat (+ i 1) 4 0)))
-            (list (dict "__t__" "literal" "__c__" (nth res 0)) (nth res 1))))
-        ((= c "x")
-          (let
-            ((res (rx-parse-hex-n pat (+ i 1) 2 0)))
-            (list (dict "__t__" "literal" "__c__" (nth res 0)) (nth res 1))))
-        (else (list (dict "__t__" "literal" "__c__" c) (+ i 1)))))))
-
-;; parse a char-class item inside [...], returns (item new-i)
-(define
-  rx-parse-class-item
-  (fn
-    (pat i)
-    (let
-      ((c (rx-char-at pat i)))
-      (cond
-        ((= c "\\")
-          (let
-            ((esc (rx-parse-escape pat (+ i 1))))
-            (let
-              ((node (nth esc 0)) (ni (nth esc 1)))
-              (let
-                ((t (get node "__t__")))
-                (cond
-                  ((= t "class-d")
-                    (list
-                      (dict "kind" "class-d" "neg" (get node "__neg__"))
-                      ni))
-                  ((= t "class-w")
-                    (list
-                      (dict "kind" "class-w" "neg" (get node "__neg__"))
-                      ni))
-                  ((= t "class-s")
-                    (list
-                      (dict "kind" "class-s" "neg" (get node "__neg__"))
-                      ni))
-                  (else
-                    (let
-                      ((lc (get node "__c__")))
-                      (if
-                        (and
-                          (= (rx-char-at pat ni) "-")
-                          (not (= (rx-char-at pat (+ ni 1)) "]")))
-                        (let
-                          ((hi-c (rx-char-at pat (+ ni 1))))
-                          (list
-                            (dict "kind" "range" "lo" lc "hi" hi-c)
-                            (+ ni 2)))
-                        (list (dict "kind" "lit" "c" lc) ni)))))))))
-        (else
-          (if
-            (and
-              (not (= c ""))
-              (= (rx-char-at pat (+ i 1)) "-")
-              (not (= (rx-char-at pat (+ i 2)) "]"))
-              (not (= (rx-char-at pat (+ i 2)) "")))
-            (let
-              ((hi-c (rx-char-at pat (+ i 2))))
-              (list (dict "kind" "range" "lo" c "hi" hi-c) (+ i 3)))
-            (list (dict "kind" "lit" "c" c) (+ i 1))))))))
-
-(define
-  rx-parse-class-items
-  (fn
-    (pat i items)
-    (let
-      ((c (rx-char-at pat i)))
-      (if
-        (or (= c "]") (= c ""))
-        (list items i)
-        (let
-          ((res (rx-parse-class-item pat i)))
-          (begin
-            (append! items (nth res 0))
-            (rx-parse-class-items pat (nth res 1) items)))))))
-
-;; parse a sequence until stop-ch or EOF; returns (nodes new-i groups-count)
-(define
-  rx-parse-seq
-  (fn
-    (pat i stop-ch ds)
-    (let
-      ((c (rx-char-at pat i)))
-      (cond
-        ((= c "") (list (get ds "nodes") i (get ds "groups")))
-        ((= c stop-ch) (list (get ds "nodes") i (get ds "groups")))
-        ((= c "|") (rx-parse-alt-rest pat i ds))
-        (else
-          (let
-            ((res (rx-parse-atom pat i ds)))
-            (let
-              ((node (nth res 0)) (ni (nth res 1)) (ds2 (nth res 2)))
-              (let
-                ((qres (rx-parse-quant pat ni node)))
-                (begin
-                  (append! (get ds2 "nodes") (nth qres 0))
-                  (rx-parse-seq pat (nth qres 1) stop-ch ds2))))))))))
-
-;; when we hit | inside a sequence, collect all alternatives
-(define
-  rx-parse-alt-rest
-  (fn
-    (pat i ds)
-    (let
-      ((left-branch (get ds "nodes")) (branches (list)))
-      (begin
-        (append! branches left-branch)
-        (rx-parse-alt-branches pat i (get ds "groups") branches)))))
-
-(define
-  rx-parse-alt-branches
-  (fn
-    (pat i n-groups branches)
-    (let
-      ((new-nodes (list)) (ds2 (dict "groups" n-groups "nodes" new-nodes)))
-      (let
-        ((res (rx-parse-seq pat (+ i 1) "|" ds2)))
-        (begin
-          (append! branches (nth res 0))
-          (let
-            ((ni2 (nth res 1)) (g2 (nth res 2)))
-            (if
-              (= (rx-char-at pat ni2) "|")
-              (rx-parse-alt-branches pat ni2 g2 branches)
-              (list
-                (list (dict "__t__" "alt" "__branches__" branches))
-                ni2
-                g2))))))))
-
-;; parse quantifier suffix, returns (node new-i)
-(define
-  rx-parse-quant
-  (fn
-    (pat i node)
-    (let
-      ((c (rx-char-at pat i)))
-      (cond
-        ((= c "*")
-          (let
-            ((lazy? (= (rx-char-at pat (+ i 1)) "?")))
-            (list
-              (dict
-                "__t__"
-                "quant"
-                "__node__"
-                node
-                "__min__"
-                0
-                "__max__"
-                -1
-                "__lazy__"
-                lazy?)
-              (if lazy? (+ i 2) (+ i 1)))))
-        ((= c "+")
-          (let
-            ((lazy? (= (rx-char-at pat (+ i 1)) "?")))
-            (list
-              (dict
-                "__t__"
-                "quant"
-                "__node__"
-                node
-                "__min__"
-                1
-                "__max__"
-                -1
-                "__lazy__"
-                lazy?)
-              (if lazy? (+ i 2) (+ i 1)))))
-        ((= c "?")
-          (let
-            ((lazy? (= (rx-char-at pat (+ i 1)) "?")))
-            (list
-              (dict
-                "__t__"
-                "quant"
-                "__node__"
-                node
-                "__min__"
-                0
-                "__max__"
-                1
-                "__lazy__"
-                lazy?)
-              (if lazy? (+ i 2) (+ i 1)))))
-        ((= c "{")
-          (let
-            ((mres (rx-parse-int pat (+ i 1) 0)))
-            (let
-              ((mn (nth mres 0)) (mi (nth mres 1)))
-              (let
-                ((sep (rx-char-at pat mi)))
-                (cond
-                  ((= sep "}")
-                    (let
-                      ((lazy? (= (rx-char-at pat (+ mi 1)) "?")))
-                      (list
-                        (dict
-                          "__t__"
-                          "quant"
-                          "__node__"
-                          node
-                          "__min__"
-                          mn
-                          "__max__"
-                          mn
-                          "__lazy__"
-                          lazy?)
-                        (if lazy? (+ mi 2) (+ mi 1)))))
-                  ((= sep ",")
-                    (let
-                      ((c2 (rx-char-at pat (+ mi 1))))
-                      (if
-                        (= c2 "}")
-                        (let
-                          ((lazy? (= (rx-char-at pat (+ mi 2)) "?")))
-                          (list
-                            (dict
-                              "__t__"
-                              "quant"
-                              "__node__"
-                              node
-                              "__min__"
-                              mn
-                              "__max__"
-                              -1
-                              "__lazy__"
-                              lazy?)
-                            (if lazy? (+ mi 3) (+ mi 2))))
-                        (let
-                          ((mxres (rx-parse-int pat (+ mi 1) 0)))
-                          (let
-                            ((mx (nth mxres 0)) (mxi (nth mxres 1)))
-                            (let
-                              ((lazy? (= (rx-char-at pat (+ mxi 1)) "?")))
-                              (list
-                                (dict
-                                  "__t__"
-                                  "quant"
-                                  "__node__"
-                                  node
-                                  "__min__"
-                                  mn
-                                  "__max__"
-                                  mx
-                                  "__lazy__"
-                                  lazy?)
-                                (if lazy? (+ mxi 2) (+ mxi 1)))))))))
-                  (else (list node i)))))))
-        (else (list node i))))))
-
-;; parse one atom, returns (node new-i new-ds)
-(define
-  rx-parse-atom
-  (fn
-    (pat i ds)
-    (let
-      ((c (rx-char-at pat i)))
-      (cond
-        ((= c ".") (list (dict "__t__" "any") (+ i 1) ds))
-        ((= c "^") (list (dict "__t__" "anchor-start") (+ i 1) ds))
-        ((= c "$") (list (dict "__t__" "anchor-end") (+ i 1) ds))
-        ((= c "\\")
-          (let
-            ((esc (rx-parse-escape pat (+ i 1))))
-            (list (nth esc 0) (nth esc 1) ds)))
-        ((= c "[")
-          (let
-            ((neg? (= (rx-char-at pat (+ i 1)) "^")))
-            (let
-              ((start (if neg? (+ i 2) (+ i 1))) (items (list)))
-              (let
-                ((res (rx-parse-class-items pat start items)))
-                (let
-                  ((ci (nth res 1)))
-                  (list
-                    (dict
-                      "__t__"
-                      "char-class"
-                      "__neg__"
-                      neg?
-                      "__items__"
-                      items)
-                    (+ ci 1)
-                    ds))))))
-        ((= c "(")
-          (let
-            ((c2 (rx-char-at pat (+ i 1))))
-            (if
-              (and (= c2 "?") (= (rx-char-at pat (+ i 2)) ":"))
-              (let
-                ((inner-nodes (list))
-                  (inner-ds
-                    (dict "groups" (get ds "groups") "nodes" inner-nodes)))
-                (let
-                  ((res (rx-parse-seq pat (+ i 3) ")" inner-ds)))
-                  (list
-                    (dict "__t__" "ncgroup" "__nodes__" (nth res 0))
-                    (+ (nth res 1) 1)
-                    (dict "groups" (nth res 2) "nodes" (get ds "nodes")))))
-              (let
-                ((gidx (+ (get ds "groups") 1)) (inner-nodes (list)))
-                (let
-                  ((inner-ds (dict "groups" gidx "nodes" inner-nodes)))
-                  (let
-                    ((res (rx-parse-seq pat (+ i 1) ")" inner-ds)))
-                    (list
-                      (dict
-                        "__t__"
-                        "group"
-                        "__idx__"
-                        gidx
-                        "__nodes__"
-                        (nth res 0))
-                      (+ (nth res 1) 1)
-                      (dict "groups" (nth res 2) "nodes" (get ds "nodes")))))))))
-        (else (list (dict "__t__" "literal" "__c__" c) (+ i 1) ds))))))
-
-;; top-level compile
-(define
-  rx-compile
-  (fn
-    (pattern)
-    (let
-      ((nodes (list)) (ds (dict "groups" 0 "nodes" nodes)))
-      (let
-        ((res (rx-parse-seq pattern 0 "" ds)))
-        (dict "nodes" (nth res 0) "ngroups" (nth res 2))))))
-
-;; ── Matcher ───────────────────────────────────────────────────────
-
-;; Match a char-class item against character c
-(define
-  rx-item-matches?
-  (fn
-    (item c ci?)
-    (let
-      ((kind (get item "kind")))
-      (cond
-        ((= kind "lit") (rx-char-eq? c (get item "c") ci?))
-        ((= kind "range")
-          (let
-            ((lo (if ci? (rx-downcase-char (get item "lo")) (get item "lo")))
-              (hi
-                (if ci? (rx-downcase-char (get item "hi")) (get item "hi")))
-              (dc (if ci? (rx-downcase-char c) c)))
-            (and
-              (>= (char-code dc) (char-code lo))
-              (<= (char-code dc) (char-code hi)))))
-        ((= kind "class-d")
-          (let ((m (rx-digit? c))) (if (get item "neg") (not m) m)))
-        ((= kind "class-w")
-          (let ((m (rx-word? c))) (if (get item "neg") (not m) m)))
-        ((= kind "class-s")
-          (let ((m (rx-space? c))) (if (get item "neg") (not m) m)))
-        (else false)))))
-
-(define
-  rx-class-items-any?
-  (fn
-    (items c ci?)
-    (if
-      (empty? items)
-      false
-      (if
-        (rx-item-matches? (first items) c ci?)
-        true
-        (rx-class-items-any? (rest items) c ci?)))))
-
-(define
-  rx-class-matches?
-  (fn
-    (node c ci?)
-    (let
-      ((neg? (get node "__neg__")) (items (get node "__items__")))
-      (let
-        ((hit (rx-class-items-any? items c ci?)))
-        (if neg? (not hit) hit)))))
-
-;; Word boundary check
-(define
-  rx-is-word-boundary?
-  (fn
-    (s i slen)
-    (let
-      ((before (if (> i 0) (rx-word? (char-at s (- i 1))) false))
-        (after (if (< i slen) (rx-word? (char-at s i)) false)))
-      (not (= before after)))))
-
-;; ── Core matcher ──────────────────────────────────────────────────
-;;
-;; rx-match-nodes : nodes s i slen ci? mi? groups → end-pos or -1
-;;
-;; Matches `nodes` starting at position `i` in string `s`.
-;; Returns the position after the last character consumed, or -1 on failure.
-;; Mutates `groups` dict to record captures.
-
-(define
-  rx-match-nodes
-  (fn
-    (nodes s i slen ci? mi? groups)
-    (if
-      (empty? nodes)
-      i
-      (let
-        ((node (first nodes)) (rest-nodes (rest nodes)))
-        (let
-          ((t (get node "__t__")))
-          (cond
-            ((= t "literal")
-              (if
-                (and
-                  (< i slen)
-                  (rx-char-eq? (char-at s i) (get node "__c__") ci?))
-                (rx-match-nodes rest-nodes s (+ i 1) slen ci? mi? groups)
-                -1))
-            ((= t "any")
-              (if
-                (and (< i slen) (not (rx-newline? (char-at s i))))
-                (rx-match-nodes rest-nodes s (+ i 1) slen ci? mi? groups)
-                -1))
-            ((= t "class-d")
-              (let
-                ((m (and (< i slen) (rx-digit? (char-at s i)))))
-                (if
-                  (if (get node "__neg__") (not m) m)
-                  (rx-match-nodes rest-nodes s (+ i 1) slen ci? mi? groups)
-                  -1)))
-            ((= t "class-w")
-              (let
-                ((m (and (< i slen) (rx-word? (char-at s i)))))
-                (if
-                  (if (get node "__neg__") (not m) m)
-                  (rx-match-nodes rest-nodes s (+ i 1) slen ci? mi? groups)
-                  -1)))
-            ((= t "class-s")
-              (let
-                ((m (and (< i slen) (rx-space? (char-at s i)))))
-                (if
-                  (if (get node "__neg__") (not m) m)
-                  (rx-match-nodes rest-nodes s (+ i 1) slen ci? mi? groups)
-                  -1)))
-            ((= t "char-class")
-              (if
-                (and (< i slen) (rx-class-matches? node (char-at s i) ci?))
-                (rx-match-nodes rest-nodes s (+ i 1) slen ci? mi? groups)
-                -1))
-            ((= t "anchor-start")
-              (if
-                (or
-                  (= i 0)
-                  (and mi? (rx-newline? (rx-char-at s (- i 1)))))
-                (rx-match-nodes rest-nodes s i slen ci? mi? groups)
-                -1))
-            ((= t "anchor-end")
-              (if
-                (or (= i slen) (and mi? (rx-newline? (rx-char-at s i))))
-                (rx-match-nodes rest-nodes s i slen ci? mi? groups)
-                -1))
-            ((= t "anchor-word")
-              (if
-                (rx-is-word-boundary? s i slen)
-                (rx-match-nodes rest-nodes s i slen ci? mi? groups)
-                -1))
-            ((= t "anchor-nonword")
-              (if
-                (not (rx-is-word-boundary? s i slen))
-                (rx-match-nodes rest-nodes s i slen ci? mi? groups)
-                -1))
-            ((= t "group")
-              (let
-                ((gidx (get node "__idx__"))
-                  (inner (get node "__nodes__")))
-                (let
-                  ((g-end (rx-match-nodes inner s i slen ci? mi? groups)))
-                  (if
-                    (>= g-end 0)
-                    (begin
-                      (dict-set!
-                        groups
-                        (js-to-string gidx)
-                        (substring s i g-end))
-                      (let
-                        ((final-end (rx-match-nodes rest-nodes s g-end slen ci? mi? groups)))
-                        (if
-                          (>= final-end 0)
-                          final-end
-                          (begin
-                            (dict-set! groups (js-to-string gidx) nil)
-                            -1))))
-                    -1))))
-            ((= t "ncgroup")
-              (let
-                ((inner (get node "__nodes__")))
-                (rx-match-nodes
-                  (append inner rest-nodes)
-                  s
-                  i
-                  slen
-                  ci?
-                  mi?
-                  groups)))
-            ((= t "alt")
-              (let
-                ((branches (get node "__branches__")))
-                (rx-try-branches branches rest-nodes s i slen ci? mi? groups)))
-            ((= t "quant")
-              (let
-                ((inner-node (get node "__node__"))
-                  (mn (get node "__min__"))
-                  (mx (get node "__max__"))
-                  (lazy? (get node "__lazy__")))
-                (if
-                  lazy?
-                  (rx-quant-lazy
-                    inner-node
-                    mn
-                    mx
-                    rest-nodes
-                    s
-                    i
-                    slen
-                    ci?
-                    mi?
-                    groups
-                    0)
-                  (rx-quant-greedy
-                    inner-node
-                    mn
-                    mx
-                    rest-nodes
-                    s
-                    i
-                    slen
-                    ci?
-                    mi?
-                    groups
-                    0))))
-            (else -1)))))))
-
-(define
-  rx-try-branches
-  (fn
-    (branches rest-nodes s i slen ci? mi? groups)
-    (if
-      (empty? branches)
-      -1
-      (let
-        ((res (rx-match-nodes (append (first branches) rest-nodes) s i slen ci? mi? groups)))
-        (if
-          (>= res 0)
-          res
-          (rx-try-branches (rest branches) rest-nodes s i slen ci? mi? groups))))))
-
-;; Greedy: expand as far as possible, then try rest from the longest match
-;; Strategy: recurse forward (extend first); only try rest when extension fails
-(define
-  rx-quant-greedy
-  (fn
-    (inner-node mn mx rest-nodes s i slen ci? mi? groups count)
-    (let
-      ((can-extend (and (< i slen) (or (= mx -1) (< count mx)))))
-      (if
-        can-extend
-        (let
-          ((ni (rx-match-one inner-node s i slen ci? mi? groups)))
-          (if
-            (>= ni 0)
-            (let
-              ((res (rx-quant-greedy inner-node mn mx rest-nodes s ni slen ci? mi? groups (+ count 1))))
-              (if
-                (>= res 0)
-                res
-                (if
-                  (>= count mn)
-                  (rx-match-nodes rest-nodes s i slen ci? mi? groups)
-                  -1)))
-            (if
-              (>= count mn)
-              (rx-match-nodes rest-nodes s i slen ci? mi? groups)
-              -1)))
-        (if
-          (>= count mn)
-          (rx-match-nodes rest-nodes s i slen ci? mi? groups)
-          -1)))))
-
-;; Lazy: try rest first, extend only if rest fails
-(define
-  rx-quant-lazy
-  (fn
-    (inner-node mn mx rest-nodes s i slen ci? mi? groups count)
-    (if
-      (>= count mn)
-      (let
-        ((res (rx-match-nodes rest-nodes s i slen ci? mi? groups)))
-        (if
-          (>= res 0)
-          res
-          (if
-            (and (< i slen) (or (= mx -1) (< count mx)))
-            (let
-              ((ni (rx-match-one inner-node s i slen ci? mi? groups)))
-              (if
-                (>= ni 0)
-                (rx-quant-lazy
-                  inner-node
-                  mn
-                  mx
-                  rest-nodes
-                  s
-                  ni
-                  slen
-                  ci?
-                  mi?
-                  groups
-                  (+ count 1))
-                -1))
-            -1)))
-      (if
-        (< i slen)
-        (let
-          ((ni (rx-match-one inner-node s i slen ci? mi? groups)))
-          (if
-            (>= ni 0)
-            (rx-quant-lazy
-              inner-node
-              mn
-              mx
-              rest-nodes
-              s
-              ni
-              slen
-              ci?
-              mi?
-              groups
-              (+ count 1))
-            -1))
-        -1))))
-
-;; Match a single node at position i, return new pos or -1
-(define
-  rx-match-one
-  (fn
-    (node s i slen ci? mi? groups)
-    (rx-match-nodes (list node) s i slen ci? mi? groups)))
-
-;; ── Engine entry points ───────────────────────────────────────────
-
-;; Try matching at exactly position i. Returns result dict or nil.
-(define
-  rx-try-at
-  (fn
-    (compiled s i slen ci? mi?)
-    (let
-      ((nodes (get compiled "nodes")) (ngroups (get compiled "ngroups")))
-      (let
-        ((groups (dict)))
-        (let
-          ((end (rx-match-nodes nodes s i slen ci? mi? groups)))
-          (if
-            (>= end 0)
-            (dict "start" i "end" end "groups" groups "ngroups" ngroups)
-            nil))))))
-
-;; Find first match scanning from search-start.
-(define
-  rx-find-from
-  (fn
-    (compiled s search-start slen ci? mi?)
-    (if
-      (> search-start slen)
-      nil
-      (let
-        ((res (rx-try-at compiled s search-start slen ci? mi?)))
-        (if
-          res
-          res
-          (rx-find-from compiled s (+ search-start 1) slen ci? mi?))))))
-
-;; Build exec result dict from raw match result
-(define
-  rx-build-exec-result
-  (fn
-    (s match-res)
-    (let
-      ((start (get match-res "start"))
-        (end (get match-res "end"))
-        (groups (get match-res "groups"))
-        (ngroups (get match-res "ngroups")))
-      (let
-        ((matched (substring s start end))
-          (caps (rx-build-captures groups ngroups 1)))
-        (dict "match" matched "index" start "input" s "groups" caps)))))
-
-(define
-  rx-build-captures
-  (fn
-    (groups ngroups idx)
-    (if
-      (> idx ngroups)
-      (list)
-      (let
-        ((cap (get groups (js-to-string idx))))
-        (cons
-          (if (= cap nil) :js-undefined cap)
-          (rx-build-captures groups ngroups (+ idx 1)))))))
-
-;; ── Public interface ──────────────────────────────────────────────
-
-;; Lazy compile: build NFA on first use, cache under "__compiled__"
-(define
-  rx-ensure-compiled!
-  (fn
-    (rx)
-    (if
-      (dict-has? rx "__compiled__")
-      (get rx "__compiled__")
-      (let
-        ((c (rx-compile (get rx "source"))))
-        (begin (dict-set! rx "__compiled__" c) c)))))
-
-(define
-  rx-test
-  (fn
-    (rx s)
-    (let
-      ((compiled (rx-ensure-compiled! rx))
-        (ci? (get rx "ignoreCase"))
-        (mi? (get rx "multiline"))
-        (slen (len s)))
-      (let
-        ((start (if (get rx "global") (let ((li (get rx "lastIndex"))) (if (number? li) li 0)) 0)))
-        (let
-          ((res (rx-find-from compiled s start slen ci? mi?)))
-          (if
-            (get rx "global")
-            (begin
-              (dict-set! rx "lastIndex" (if res (get res "end") 0))
-              (if res true false))
-            (if res true false)))))))
-
-(define
-  rx-exec
-  (fn
-    (rx s)
-    (let
-      ((compiled (rx-ensure-compiled! rx))
-        (ci? (get rx "ignoreCase"))
-        (mi? (get rx "multiline"))
-        (slen (len s)))
-      (let
-        ((start (if (get rx "global") (let ((li (get rx "lastIndex"))) (if (number? li) li 0)) 0)))
-        (let
-          ((res (rx-find-from compiled s start slen ci? mi?)))
-          (if
-            res
-            (begin
-              (when
-                (get rx "global")
-                (dict-set! rx "lastIndex" (get res "end")))
-              (rx-build-exec-result s res))
-            (begin
-              (when (get rx "global") (dict-set! rx "lastIndex" 0))
-              nil)))))))
-
-;; match-all for String.prototype.matchAll
-(define
-  js-regex-match-all
-  (fn
-    (rx s)
-    (let
-      ((compiled (rx-ensure-compiled! rx))
-        (ci? (get rx "ignoreCase"))
-        (mi? (get rx "multiline"))
-        (slen (len s))
-        (results (list)))
-      (rx-match-all-loop compiled s 0 slen ci? mi? results))))
-
-(define
-  rx-match-all-loop
-  (fn
-    (compiled s i slen ci? mi? results)
-    (if
-      (> i slen)
-      results
-      (let
-        ((res (rx-find-from compiled s i slen ci? mi?)))
-        (if
-          res
-          (begin
-            (append! results (rx-build-exec-result s res))
-            (let
-              ((next (get res "end")))
-              (rx-match-all-loop
-                compiled
-                s
-                (if (= next i) (+ i 1) next)
-                slen
-                ci?
-                mi?
-                results)))
-          results)))))
-
-;; ── Install platform ──────────────────────────────────────────────
-
-(js-regex-platform-override! "test" rx-test)
-(js-regex-platform-override! "exec" rx-exec)

lib/js/runtime.sx

@@ -2032,15 +2032,7 @@
           (&rest args)
           (cond
             ((= (len args) 0) nil)
-            ((js-regex? (nth args 0))
-              (let
-                ((rx (nth args 0)))
-                (let
-                  ((impl (get __js_regex_platform__ "exec")))
-                  (if
-                    (js-undefined? impl)
-                    (js-regex-stub-exec rx s)
-                    (impl rx s)))))
+            ((js-regex? (nth args 0)) (js-regex-stub-exec (nth args 0) s))
             (else
               (let
                 ((needle (js-to-string (nth args 0))))
@@ -2049,7 +2041,7 @@
                   (if
                     (= idx -1)
                     nil
-                    (let ((res (list))) (begin (append! res needle) res)))))))))
+                    (let ((res (list))) (append! res needle) res))))))))
       ((= name "at")
         (fn
           (i)
@@ -2107,20 +2099,6 @@
       ((= name "toWellFormed") (fn () s))
       (else js-undefined))))
 
-(define __js_tdz_sentinel__ (dict "__tdz__" true))
-
-(define js-tdz? (fn (v) (and (dict? v) (dict-has? v "__tdz__"))))
-
-(define
-  js-tdz-check
-  (fn
-    (name val)
-    (if
-      (js-tdz? val)
-      (raise
-        (TypeError (str "Cannot access '" name "' before initialization")))
-      val)))
-
 (define
   js-string-slice
   (fn

lib/js/stdlib.sx

@@ -1,239 +0,0 @@
-;; lib/js/stdlib.sx — Phase 22 JS additions
-;;
-;; Adds to lib/js/runtime.sx (already loaded):
-;;   1. Bitwise binary ops (js-bitand/bitor/bitxor/lshift/rshift/urshift/bitnot)
-;;   2. Map class (arbitrary-key hash map via list of pairs)
-;;   3. Set class (uniqueness collection via SX make-set)
-;;   4. RegExp constructor (wraps js-regex-new already in runtime)
-;;   5. Wires Map / Set / RegExp into js-global
-
-;; ---------------------------------------------------------------------------
-;; 1. Bitwise binary ops
-;;    JS coerces operands to 32-bit signed int before applying the op.
-;;    Use truncate (not js-num-to-int) since integer / 0 crashes the evaluator.
-;; ---------------------------------------------------------------------------
-
-(define
-  (js-bitand a b)
-  (bitwise-and (truncate (js-to-number a)) (truncate (js-to-number b))))
-
-(define
-  (js-bitor a b)
-  (bitwise-or (truncate (js-to-number a)) (truncate (js-to-number b))))
-
-(define
-  (js-bitxor a b)
-  (bitwise-xor (truncate (js-to-number a)) (truncate (js-to-number b))))
-
-;; << : left-shift by (b mod 32) positions
-(define
-  (js-lshift a b)
-  (arithmetic-shift
-    (truncate (js-to-number a))
-    (modulo (truncate (js-to-number b)) 32)))
-
-;; >> : arithmetic right-shift (sign-extending)
-(define
-  (js-rshift a b)
-  (arithmetic-shift
-    (truncate (js-to-number a))
-    (- 0 (modulo (truncate (js-to-number b)) 32))))
-
-;; >>> : logical right-shift (zero-extending)
-;;   Convert to uint32 first, then divide by 2^n.
-(define
-  (js-urshift a b)
-  (let
-    ((u32 (modulo (truncate (js-to-number a)) 4294967296))
-      (n (modulo (truncate (js-to-number b)) 32)))
-    (quotient u32 (arithmetic-shift 1 n))))
-
-;; ~ : bitwise NOT — equivalent to -(n+1) in 32-bit signed arithmetic
-(define (js-bitnot a) (bitwise-not (truncate (js-to-number a))))
-
-;; ---------------------------------------------------------------------------
-;; 2. Map class
-;;    Stored as {:__js_map__ true :size N :_pairs (list (list key val) ...)}
-;;    Mutation via dict-set! on the underlying dict.
-;; ---------------------------------------------------------------------------
-
-(define
-  (js-map-new)
-  (let
-    ((m (dict)))
-    (dict-set! m "__js_map__" true)
-    (dict-set! m "size" 0)
-    (dict-set! m "_pairs" (list))
-    m))
-
-(define (js-map? v) (and (dict? v) (dict-has? v "__js_map__")))
-
-;; Linear scan for key using ===; returns index or -1
-(define
-  (js-map-find-idx pairs k)
-  (letrec
-    ((go (fn (ps i) (cond ((= (len ps) 0) -1) ((js-strict-eq (first (first ps)) k) i) (else (go (rest ps) (+ i 1)))))))
-    (go pairs 0)))
-
-(define
-  (js-map-get m k)
-  (letrec
-    ((go (fn (ps) (if (= (len ps) 0) js-undefined (if (js-strict-eq (first (first ps)) k) (nth (first ps) 1) (go (rest ps)))))))
-    (go (get m "_pairs"))))
-
-;; Replace element at index i in list
-(define
-  (js-list-set-nth lst i newval)
-  (letrec
-    ((go (fn (ps j) (if (= (len ps) 0) (list) (cons (if (= j i) newval (first ps)) (go (rest ps) (+ j 1)))))))
-    (go lst 0)))
-
-;; Remove element at index i from list
-(define
-  (js-list-remove-nth lst i)
-  (letrec
-    ((go (fn (ps j) (if (= (len ps) 0) (list) (if (= j i) (go (rest ps) (+ j 1)) (cons (first ps) (go (rest ps) (+ j 1))))))))
-    (go lst 0)))
-
-(define
-  (js-map-set! m k v)
-  (let
-    ((pairs (get m "_pairs")) (idx (js-map-find-idx (get m "_pairs") k)))
-    (if
-      (= idx -1)
-      (begin
-        (dict-set! m "_pairs" (append pairs (list (list k v))))
-        (dict-set! m "size" (+ (get m "size") 1)))
-      (dict-set! m "_pairs" (js-list-set-nth pairs idx (list k v)))))
-  m)
-
-(define
-  (js-map-has m k)
-  (not (= (js-map-find-idx (get m "_pairs") k) -1)))
-
-(define
-  (js-map-delete! m k)
-  (let
-    ((idx (js-map-find-idx (get m "_pairs") k)))
-    (when
-      (not (= idx -1))
-      (dict-set! m "_pairs" (js-list-remove-nth (get m "_pairs") idx))
-      (dict-set! m "size" (- (get m "size") 1))))
-  m)
-
-(define
-  (js-map-clear! m)
-  (dict-set! m "_pairs" (list))
-  (dict-set! m "size" 0)
-  m)
-
-(define (js-map-keys m) (map first (get m "_pairs")))
-(define
-  (js-map-vals m)
-  (map (fn (p) (nth p 1)) (get m "_pairs")))
-(define (js-map-entries m) (get m "_pairs"))
-
-(define
-  (js-map-for-each m cb)
-  (for-each
-    (fn (p) (cb (nth p 1) (first p) m))
-    (get m "_pairs"))
-  js-undefined)
-
-;; Map method dispatch (called from js-object-method-call in runtime)
-(define
-  (js-map-method m name args)
-  (cond
-    ((= name "set")
-      (js-map-set! m (nth args 0) (nth args 1)))
-    ((= name "get") (js-map-get m (nth args 0)))
-    ((= name "has") (js-map-has m (nth args 0)))
-    ((= name "delete") (js-map-delete! m (nth args 0)))
-    ((= name "clear") (js-map-clear! m))
-    ((= name "keys") (js-map-keys m))
-    ((= name "values") (js-map-vals m))
-    ((= name "entries") (js-map-entries m))
-    ((= name "forEach") (js-map-for-each m (nth args 0)))
-    ((= name "toString") "[object Map]")
-    (else js-undefined)))
-
-(define Map {:__callable__ (fn (&rest args) (let ((m (js-map-new))) (when (and (> (len args) 0) (list? (nth args 0))) (for-each (fn (entry) (js-map-set! m (nth entry 0) (nth entry 1))) (nth args 0))) m)) :prototype {:entries (fn (&rest a) (js-map-entries (js-this))) :delete (fn (&rest a) (js-map-delete! (js-this) (nth a 0))) :get (fn (&rest a) (js-map-get (js-this) (nth a 0))) :values (fn (&rest a) (js-map-vals (js-this))) :toString (fn () "[object Map]") :has (fn (&rest a) (js-map-has (js-this) (nth a 0))) :set (fn (&rest a) (js-map-set! (js-this) (nth a 0) (nth a 1))) :forEach (fn (&rest a) (js-map-for-each (js-this) (nth a 0))) :clear (fn (&rest a) (js-map-clear! (js-this))) :keys (fn (&rest a) (js-map-keys (js-this)))}})
-
-;; ---------------------------------------------------------------------------
-;; 3. Set class
-;;    {:__js_set__ true :size N :_set <sx-set>}
-;;    Note: set-member?/set-add!/set-remove! all take (set item) order.
-;; ---------------------------------------------------------------------------
-
-(define
-  (js-set-new)
-  (let
-    ((s (dict)))
-    (dict-set! s "__js_set__" true)
-    (dict-set! s "size" 0)
-    (dict-set! s "_set" (make-set))
-    s))
-
-(define (js-set? v) (and (dict? v) (dict-has? v "__js_set__")))
-
-(define
-  (js-set-add! s v)
-  (let
-    ((sx (get s "_set")))
-    (when
-      (not (set-member? sx v))
-      (set-add! sx v)
-      (dict-set! s "size" (+ (get s "size") 1))))
-  s)
-
-(define (js-set-has s v) (set-member? (get s "_set") v))
-
-(define
-  (js-set-delete! s v)
-  (let
-    ((sx (get s "_set")))
-    (when
-      (set-member? sx v)
-      (set-remove! sx v)
-      (dict-set! s "size" (- (get s "size") 1))))
-  s)
-
-(define
-  (js-set-clear! s)
-  (dict-set! s "_set" (make-set))
-  (dict-set! s "size" 0)
-  s)
-
-(define (js-set-vals s) (set->list (get s "_set")))
-
-(define
-  (js-set-for-each s cb)
-  (for-each (fn (v) (cb v v s)) (set->list (get s "_set")))
-  js-undefined)
-
-(define Set {:__callable__ (fn (&rest args) (let ((s (js-set-new))) (when (and (> (len args) 0) (list? (nth args 0))) (for-each (fn (v) (js-set-add! s v)) (nth args 0))) s)) :prototype {:entries (fn (&rest a) (map (fn (v) (list v v)) (js-set-vals (js-this)))) :delete (fn (&rest a) (js-set-delete! (js-this) (nth a 0))) :values (fn (&rest a) (js-set-vals (js-this))) :add (fn (&rest a) (js-set-add! (js-this) (nth a 0))) :toString (fn () "[object Set]") :has (fn (&rest a) (js-set-has (js-this) (nth a 0))) :forEach (fn (&rest a) (js-set-for-each (js-this) (nth a 0))) :clear (fn (&rest a) (js-set-clear! (js-this))) :keys (fn (&rest a) (js-set-vals (js-this)))}})
-
-;; ---------------------------------------------------------------------------
-;; 4. RegExp constructor — callable lambda wrapping js-regex-new
-;; ---------------------------------------------------------------------------
-
-(define
-  RegExp
-  (fn
-    (&rest args)
-    (cond
-      ((= (len args) 0) (js-regex-new "" ""))
-      ((= (len args) 1)
-        (js-regex-new (js-to-string (nth args 0)) ""))
-      (else
-        (js-regex-new
-          (js-to-string (nth args 0))
-          (js-to-string (nth args 1)))))))
-
-;; ---------------------------------------------------------------------------
-;; 5. Wire new globals into js-global
-;; ---------------------------------------------------------------------------
-
-(dict-set! js-global "Map" Map)
-(dict-set! js-global "Set" Set)
-(dict-set! js-global "RegExp" RegExp)

lib/js/test.sh

@@ -33,10 +33,6 @@ cat > "$TMPFILE" << 'EPOCHS'
 (load "lib/js/transpile.sx")
 (epoch 5)
 (load "lib/js/runtime.sx")
-(epoch 6)
-(load "lib/js/regex.sx")
-(epoch 7)
-(load "lib/js/stdlib.sx")
 
 ;; ── Phase 0: stubs still behave ─────────────────────────────────
 (epoch 10)
@@ -1327,166 +1323,6 @@ cat > "$TMPFILE" << 'EPOCHS'
 (epoch 3505)
 (eval "(js-eval \"var a = {length: 3, 0: 10, 1: 20, 2: 30}; var sum = 0; Array.prototype.forEach.call(a, function(x){sum += x;}); sum\")")
 
-;; ── Phase 12: Regex engine ────────────────────────────────────────
-;; Platform is installed (test key is a function, not undefined)
-(epoch 5000)
-(eval "(js-undefined? (get __js_regex_platform__ \"test\"))")
-(epoch 5001)
-(eval "(js-eval \"/foo/.test('hi foo bar')\")")
-(epoch 5002)
-(eval "(js-eval \"/foo/.test('hi bar')\")")
-;; Case-insensitive flag
-(epoch 5003)
-(eval "(js-eval \"/FOO/i.test('hello foo world')\")")
-;; Anchors
-(epoch 5004)
-(eval "(js-eval \"/^hello/.test('hello world')\")")
-(epoch 5005)
-(eval "(js-eval \"/^hello/.test('say hello')\")")
-(epoch 5006)
-(eval "(js-eval \"/world$/.test('hello world')\")")
-;; Character classes
-(epoch 5007)
-(eval "(js-eval \"/\\\\d+/.test('abc 123')\")")
-(epoch 5008)
-(eval "(js-eval \"/\\\\w+/.test('hello')\")")
-(epoch 5009)
-(eval "(js-eval \"/[abc]/.test('dog')\")")
-(epoch 5010)
-(eval "(js-eval \"/[abc]/.test('cat')\")")
-;; Quantifiers
-(epoch 5011)
-(eval "(js-eval \"/a*b/.test('b')\")")
-(epoch 5012)
-(eval "(js-eval \"/a+b/.test('b')\")")
-(epoch 5013)
-(eval "(js-eval \"/a{2,3}/.test('aa')\")")
-(epoch 5014)
-(eval "(js-eval \"/a{2,3}/.test('a')\")")
-;; Dot
-(epoch 5015)
-(eval "(js-eval \"/h.llo/.test('hello')\")")
-(epoch 5016)
-(eval "(js-eval \"/h.llo/.test('hllo')\")")
-;; exec result
-(epoch 5017)
-(eval "(js-eval \"var m = /foo(\\\\w+)/.exec('foobar'); m.match\")")
-(epoch 5018)
-(eval "(js-eval \"var m = /foo(\\\\w+)/.exec('foobar'); m.index\")")
-(epoch 5019)
-(eval "(js-eval \"var m = /foo(\\\\w+)/.exec('foobar'); m.groups[0]\")")
-;; Alternation
-(epoch 5020)
-(eval "(js-eval \"/cat|dog/.test('I have a dog')\")")
-(epoch 5021)
-(eval "(js-eval \"/cat|dog/.test('I have a fish')\")")
-;; Non-capturing group
-(epoch 5022)
-(eval "(js-eval \"/(?:foo)+/.test('foofoo')\")")
-;; Negated char class
-(epoch 5023)
-(eval "(js-eval \"/[^abc]/.test('d')\")")
-(epoch 5024)
-(eval "(js-eval \"/[^abc]/.test('a')\")")
-;; Range inside char class
-(epoch 5025)
-(eval "(js-eval \"/[a-z]+/.test('hello')\")")
-;; Word boundary
-(epoch 5026)
-(eval "(js-eval \"/\\\\bword\\\\b/.test('a word here')\")")
-(epoch 5027)
-(eval "(js-eval \"/\\\\bword\\\\b/.test('password')\")")
-;; Lazy quantifier
-(epoch 5028)
-(eval "(js-eval \"var m = /a+?/.exec('aaa'); m.match\")")
-;; Global flag exec
-(epoch 5029)
-(eval "(js-eval \"var r=/\\\\d+/g; r.exec('a1b2'); r.exec('a1b2').match\")")
-;; String.prototype.match with regex
-(epoch 5030)
-(eval "(js-eval \"'hello world'.match(/\\\\w+/).match\")")
-;; String.prototype.search
-(epoch 5031)
-(eval "(js-eval \"'hello world'.search(/world/)\")")
-;; String.prototype.replace with regex
-(epoch 5032)
-(eval "(js-eval \"'hello world'.replace(/world/, 'there')\")")
-;; multiline anchor
-(epoch 5033)
-(eval "(js-eval \"/^bar/m.test('foo\\nbar')\")")
-
-;; ── Phase 13: let/const TDZ infrastructure ───────────────────────
-;; The TDZ sentinel and checker are defined in runtime.sx.
-;; let/const bindings work normally after initialization.
-(epoch 5100)
-(eval "(js-eval \"let x = 5; x\")")
-(epoch 5101)
-(eval "(js-eval \"const y = 42; y\")")
-;; TDZ sentinel exists and is detectable
-(epoch 5102)
-(eval "(js-tdz? __js_tdz_sentinel__)")
-;; js-tdz-check passes through non-sentinel values
-(epoch 5103)
-(eval "(js-tdz-check \"x\" 42)")
-
-;; ── Phase 22: Bitwise ops ────────────────────────────────────────
-(epoch 6000)
-(eval "(js-bitand 5 3)")
-(epoch 6001)
-(eval "(js-bitor 5 3)")
-(epoch 6002)
-(eval "(js-bitxor 5 3)")
-(epoch 6003)
-(eval "(js-lshift 1 4)")
-(epoch 6004)
-(eval "(js-rshift 32 2)")
-(epoch 6005)
-(eval "(js-rshift -8 1)")
-(epoch 6006)
-(eval "(js-urshift 4294967292 2)")
-(epoch 6007)
-(eval "(js-bitnot 0)")
-
-;; ── Phase 22: Map ─────────────────────────────────────────────────
-(epoch 6010)
-(eval "(js-map? (js-map-new))")
-(epoch 6011)
-(eval "(get (js-map-set! (js-map-new) \"k\" 42) \"size\")")
-(epoch 6012)
-(eval "(let ((m (js-map-new))) (js-map-set! m \"a\" 1) (js-map-get m \"a\"))")
-(epoch 6013)
-(eval "(let ((m (js-map-new))) (js-map-set! m \"x\" 9) (js-map-has m \"x\"))")
-(epoch 6014)
-(eval "(let ((m (js-map-new))) (js-map-set! m \"x\" 9) (js-map-has m \"y\"))")
-(epoch 6015)
-(eval "(let ((m (js-map-new))) (js-map-set! m \"a\" 1) (js-map-set! m \"b\" 2) (get m \"size\"))")
-(epoch 6016)
-(eval "(let ((m (js-map-new))) (js-map-set! m \"a\" 1) (js-map-delete! m \"a\") (get m \"size\"))")
-(epoch 6017)
-(eval "(let ((m (js-map-new))) (js-map-set! m \"a\" 1) (js-map-set! m \"a\" 99) (js-map-get m \"a\"))")
-
-;; ── Phase 22: Set ─────────────────────────────────────────────────
-(epoch 6020)
-(eval "(js-set? (js-set-new))")
-(epoch 6021)
-(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-has s 1))")
-(epoch 6022)
-(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-has s 2))")
-(epoch 6023)
-(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-add! s 1) (get s \"size\"))")
-(epoch 6024)
-(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-add! s 2) (get s \"size\"))")
-(epoch 6025)
-(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-delete! s 1) (get s \"size\"))")
-
-;; ── Phase 22: RegExp constructor ──────────────────────────────────
-(epoch 6030)
-(eval "(js-regex? (RegExp \"ab\" \"i\"))")
-(epoch 6031)
-(eval "(get (RegExp \"hello\" \"gi\") \"global\")")
-(epoch 6032)
-(eval "(get (RegExp \"foo\" \"i\") \"ignoreCase\")")
-
 EPOCHS
 
 
@@ -2206,81 +2042,6 @@ check 3503 "indexOf.call arrLike"          '1'
 check 3504 "filter.call arrLike"           '"2,3"'
 check 3505 "forEach.call arrLike sum"      '60'
 
-# ── Phase 12: Regex engine ────────────────────────────────────────
-check 5000 "regex platform installed"           'false'
-check 5001 "/foo/ matches"                      'true'
-check 5002 "/foo/ no match"                     'false'
-check 5003 "/FOO/i case-insensitive"            'true'
-check 5004 "/^hello/ anchor match"              'true'
-check 5005 "/^hello/ anchor no-match"           'false'
-check 5006 "/world$/ end anchor"                'true'
-check 5007 "/\\d+/ digit class"                 'true'
-check 5008 "/\\w+/ word class"                  'true'
-check 5009 "/[abc]/ class no-match"             'false'
-check 5010 "/[abc]/ class match"                'true'
-check 5011 "/a*b/ zero-or-more"                 'true'
-check 5012 "/a+b/ one-or-more no-match"         'false'
-check 5013 "/a{2,3}/ quant match"               'true'
-check 5014 "/a{2,3}/ quant no-match"            'false'
-check 5015 "dot matches any"                    'true'
-check 5016 "dot requires char"                  'false'
-check 5017 "exec match string"                  '"foobar"'
-check 5018 "exec match index"                   '0'
-check 5019 "exec capture group"                 '"bar"'
-check 5020 "alternation cat|dog match"          'true'
-check 5021 "alternation cat|dog no-match"       'false'
-check 5022 "non-capturing group"                'true'
-check 5023 "negated class match"                'true'
-check 5024 "negated class no-match"             'false'
-check 5025 "range [a-z]+"                       'true'
-check 5026 "word boundary match"                'true'
-check 5027 "word boundary no-match"             'false'
-check 5028 "lazy quantifier"                    '"a"'
-check 5029 "global exec advances"               '"2"'
-check 5030 "String.match regex"                 '"hello"'
-check 5031 "String.search regex"                '6'
-check 5032 "String.replace regex"               '"hello there"'
-check 5033 "multiline anchor"                   'true'
-
-# ── Phase 13: let/const TDZ infrastructure ───────────────────────
-check 5100 "let binding initialized"            '5'
-check 5101 "const binding initialized"          '42'
-check 5102 "TDZ sentinel is detectable"         'true'
-check 5103 "tdz-check passes non-sentinel"      '42'
-
-# ── Phase 22: Bitwise ops ─────────────────────────────────────────
-check 6000 "bitand 5&3"     '1'
-check 6001 "bitor 5|3"      '7'
-check 6002 "bitxor 5^3"     '6'
-check 6003 "lshift 1<<4"    '16'
-check 6004 "rshift 32>>2"   '8'
-check 6005 "rshift -8>>1"   '-4'
-check 6006 "urshift >>>"     '1073741823'
-check 6007 "bitnot ~0"      '-1'
-
-# ── Phase 22: Map ─────────────────────────────────────────────────
-check 6010 "map? new map"          'true'
-check 6011 "map set→size 1"        '1'
-check 6012 "map get existing"      '1'
-check 6013 "map has key yes"       'true'
-check 6014 "map has key no"        'false'
-check 6015 "map size 2 entries"    '2'
-check 6016 "map delete→size 0"     '0'
-check 6017 "map set overwrites"    '99'
-
-# ── Phase 22: Set ─────────────────────────────────────────────────
-check 6020 "set? new set"          'true'
-check 6021 "set has after add"     'true'
-check 6022 "set has absent"        'false'
-check 6023 "set dedup size"        '1'
-check 6024 "set size 2"            '2'
-check 6025 "set delete→size 0"     '0'
-
-# ── Phase 22: RegExp ──────────────────────────────────────────────
-check 6030 "RegExp? result"        'true'
-check 6031 "RegExp global flag"    'true'
-check 6032 "RegExp ignoreCase"     'true'
-
 TOTAL=$((PASS + FAIL))
 if [ $FAIL -eq 0 ]; then
   echo "✓ $PASS/$TOTAL JS-on-SX tests passed"

lib/js/test262-runner.py

@@ -798,7 +798,6 @@ class ServerSession:
         self._run_and_collect(3, '(load "lib/js/parser.sx")', timeout=60.0)
         self._run_and_collect(4, '(load "lib/js/transpile.sx")', timeout=60.0)
         self._run_and_collect(5, '(load "lib/js/runtime.sx")', timeout=60.0)
-        self._run_and_collect(50, '(load "lib/js/regex.sx")', timeout=60.0)
         # Preload the stub harness — use precomputed SX cache when available
         # (huge win: ~15s js-eval HARNESS_STUB → ~0s load precomputed .sx).
         cache_rel = _harness_cache_rel_path()

lib/js/transpile.sx

@@ -935,12 +935,12 @@
 
 (define
   js-transpile-var
-  (fn (kind decls) (cons (js-sym "begin") (js-vardecl-forms kind decls))))
+  (fn (kind decls) (cons (js-sym "begin") (js-vardecl-forms decls))))
 
 (define
   js-vardecl-forms
   (fn
-    (kind decls)
+    (decls)
     (cond
       ((empty? decls) (list))
       (else
@@ -953,7 +953,7 @@
                   (js-sym "define")
                   (js-sym (nth d 1))
                   (js-transpile (nth d 2)))
-                (js-vardecl-forms kind (rest decls))))
+                (js-vardecl-forms (rest decls))))
             ((js-tag? d "js-vardecl-obj")
               (let
                 ((names (nth d 1))
@@ -964,7 +964,7 @@
                   (js-vardecl-obj-forms
                     names
                     tmp-sym
-                    (js-vardecl-forms kind (rest decls))))))
+                    (js-vardecl-forms (rest decls))))))
             ((js-tag? d "js-vardecl-arr")
               (let
                 ((names (nth d 1))
@@ -976,7 +976,7 @@
                     names
                     tmp-sym
                     0
-                    (js-vardecl-forms kind (rest decls))))))
+                    (js-vardecl-forms (rest decls))))))
             (else (error "js-vardecl-forms: unexpected decl"))))))))
 
 (define

lib/lua/runtime.sx

@@ -123,7 +123,7 @@
               (fn
                 (i)
                 (if
-                  (not (= (get a (str i)) nil))
+                  (has? a (str i))
                   (begin (set! n i) (count-loop (+ i 1)))
                   n)))
             (count-loop 1))))
@@ -152,9 +152,7 @@
                   (cond
                     ((= (first f) "pos")
                       (begin
-                        (set!
-                          t
-                          (assoc t (str array-idx) (nth f 1)))
+                        (set! t (assoc t (str array-idx) (nth f 1)))
                         (set! array-idx (+ array-idx 1))))
                     ((= (first f) "kv")
                       (let
@@ -171,108 +169,3 @@
     (if (= t nil) nil (let ((v (get t (str k)))) (if (= v nil) nil v)))))
 
 (define lua-set! (fn (t k v) (assoc t (str k) v)))
-
-;; ---------------------------------------------------------------------------
-;; Helpers for stdlib
-;; ---------------------------------------------------------------------------
-
-;; Apply a char function to every character in a string
-(define (lua-str-map s fn) (list->string (map fn (string->list s))))
-
-;; Repeat string s n times
-(define
-  (lua-str-rep s n)
-  (letrec
-    ((go (fn (acc i) (if (= i 0) acc (go (str acc s) (- i 1))))))
-    (go "" n)))
-
-;; Force a promise created by delay
-(define
-  (lua-force p)
-  (if
-    (and (dict? p) (get p :_promise))
-    (if (get p :forced) (get p :value) ((get p :thunk)))
-    p))
-
-;; ---------------------------------------------------------------------------
-;; math — Lua math library
-;; ---------------------------------------------------------------------------
-
-(define math {:asin asin :floor floor :exp exp :huge 1e+308 :tan tan :sqrt sqrt :log log :abs abs :ceil ceil :sin sin :max (fn (a b) (if (> a b) a b)) :acos acos :min (fn (a b) (if (< a b) a b)) :cos cos :pi 3.14159 :atan atan})
-
-;; ---------------------------------------------------------------------------
-;; string — Lua string library
-;; ---------------------------------------------------------------------------
-
-(define
-  (lua-string-find s pat)
-  (let
-    ((m (regexp-match (make-regexp pat) s)))
-    (if (= m nil) nil (list (+ (get m :start) 1) (get m :end)))))
-
-(define
-  (lua-string-match s pat)
-  (let
-    ((m (regexp-match (make-regexp pat) s)))
-    (if
-      (= m nil)
-      nil
-      (let
-        ((groups (get m :groups)))
-        (if (= (len groups) 0) (get m :match) (first groups))))))
-
-(define
-  (lua-string-gmatch s pat)
-  (map (fn (m) (get m :match)) (regexp-match-all (make-regexp pat) s)))
-
-(define
-  (lua-string-gsub s pat repl)
-  (regexp-replace-all (make-regexp pat) s repl))
-
-(define string {:rep lua-str-rep :sub (fn (s i &rest j-args) (let ((slen (len s)) (j (if (= (len j-args) 0) -1 (first j-args)))) (let ((from (if (< i 0) (let ((r (+ slen i))) (if (< r 0) 0 r)) (- i 1))) (to (if (< j 0) (let ((r (+ slen j 1))) (if (< r 0) 0 r)) (if (> j slen) slen j)))) (if (> from to) "" (substring s from to))))) :len (fn (s) (len s)) :upper (fn (s) (lua-str-map s char-upcase)) :char (fn (&rest codes) (list->string (map (fn (c) (integer->char (truncate c))) codes))) :gmatch lua-string-gmatch :gsub lua-string-gsub :lower (fn (s) (lua-str-map s char-downcase)) :byte (fn (s &rest args) (char->integer (nth (string->list s) (- (if (= (len args) 0) 1 (first args)) 1)))) :match lua-string-match :find lua-string-find :reverse (fn (s) (list->string (reverse (string->list s))))})
-
-;; ---------------------------------------------------------------------------
-;; table — Lua table library
-;; ---------------------------------------------------------------------------
-
-(define
-  (lua-table-insert t v)
-  (assoc t (str (+ (lua-len t) 1)) v))
-
-(define
-  (lua-table-remove t &rest args)
-  (let
-    ((n (lua-len t))
-      (pos (if (= (len args) 0) (lua-len t) (first args))))
-    (letrec
-      ((slide (fn (t i) (if (< i n) (assoc (slide t (+ i 1)) (str i) (lua-get t (+ i 1))) (assoc t (str n) nil)))))
-      (slide t pos))))
-
-(define
-  (lua-table-concat t &rest args)
-  (let
-    ((sep (if (= (len args) 0) "" (first args)))
-      (n (lua-len t)))
-    (letrec
-      ((go (fn (acc i) (if (> i n) acc (go (str acc (if (= i 1) "" sep) (lua-to-string (lua-get t i))) (+ i 1))))))
-      (go "" 1))))
-
-(define
-  (lua-table-sort t)
-  (let
-    ((n (lua-len t)))
-    (letrec
-      ((collect (fn (i acc) (if (< i 1) acc (collect (- i 1) (cons (lua-get t i) acc)))))
-        (rebuild
-          (fn
-            (t i items)
-            (if
-              (= (len items) 0)
-              t
-              (rebuild
-                (assoc t (str i) (first items))
-                (+ i 1)
-                (rest items))))))
-      (rebuild t 1 (sort (collect n (list)))))))
-
-(define table {:sort lua-table-sort :concat lua-table-concat :insert lua-table-insert :remove lua-table-remove})

lib/lua/test.sh

@@ -633,116 +633,6 @@ check 482 "while i<5 count"                 '5'
 check 483 "repeat until i>=3"               '3'
 check 484 "for 1..100 sum"                  '5050'
 
-# ── Phase 3: stdlib — math, string, table ──────────────────────────────────
-
-cat >> "$TMPFILE" << 'EPOCHS2'
-
-;; ── math library ───────────────────────────────────────────────
-(epoch 500)
-(eval "(lua-eval-ast \"return math.abs(-7)\")")
-(epoch 501)
-(eval "(lua-eval-ast \"return math.floor(3.9)\")")
-(epoch 502)
-(eval "(lua-eval-ast \"return math.ceil(3.1)\")")
-(epoch 503)
-(eval "(lua-eval-ast \"return math.sqrt(9)\")")
-(epoch 504)
-(eval "(lua-eval-ast \"return math.sin(0)\")")
-(epoch 505)
-(eval "(lua-eval-ast \"return math.cos(0)\")")
-(epoch 506)
-(eval "(lua-eval-ast \"return math.max(3, 7)\")")
-(epoch 507)
-(eval "(lua-eval-ast \"return math.min(3, 7)\")")
-(epoch 508)
-(eval "(lua-eval-ast \"return math.pi > 3\")")
-(epoch 509)
-(eval "(lua-eval-ast \"return math.huge > 0\")")
-
-;; ── string library ─────────────────────────────────────────────
-(epoch 520)
-(eval "(lua-eval-ast \"return string.len(\\\"hello\\\")\")")
-(epoch 521)
-(eval "(lua-eval-ast \"return string.upper(\\\"hello\\\")\")")
-(epoch 522)
-(eval "(lua-eval-ast \"return string.lower(\\\"WORLD\\\")\")")
-(epoch 523)
-(eval "(lua-eval-ast \"return string.sub(\\\"hello\\\", 2, 4)\")")
-(epoch 524)
-(eval "(lua-eval-ast \"return string.rep(\\\"ab\\\", 3)\")")
-(epoch 525)
-(eval "(lua-eval-ast \"return string.reverse(\\\"hello\\\")\")")
-(epoch 526)
-(eval "(lua-eval-ast \"return string.byte(\\\"A\\\")\")")
-(epoch 527)
-(eval "(lua-eval-ast \"return string.char(72, 105)\")")
-(epoch 528)
-(eval "(lua-eval-ast \"return string.find(\\\"hello\\\", \\\"ll\\\")\")")
-(epoch 529)
-(eval "(lua-eval-ast \"return string.match(\\\"hello\\\", \\\"ell\\\")\")")
-(epoch 530)
-(eval "(lua-eval-ast \"return string.gsub(\\\"hello\\\", \\\"l\\\", \\\"r\\\")\")")
-
-;; ── table library ──────────────────────────────────────────────
-(epoch 540)
-(eval "(lua-eval-ast \"local t = {10, 20, 30} t = table.insert(t, 40) return t[4]\")")
-(epoch 541)
-(eval "(lua-eval-ast \"local t = {10, 20, 30} t = table.remove(t) return t[3]\")")
-(epoch 542)
-(eval "(lua-eval-ast \"local t = {\\\"a\\\", \\\"b\\\", \\\"c\\\"} return table.concat(t, \\\",\\\")\")")
-(epoch 543)
-(eval "(lua-eval-ast \"local t = {3, 1, 2} t = table.sort(t) return t[1]\")")
-(epoch 544)
-(eval "(lua-eval-ast \"local t = {3, 1, 2} t = table.sort(t) return t[3]\")")
-
-;; ── delay / force ──────────────────────────────────────────────
-(epoch 550)
-(eval "(lua-force (delay (+ 10 5)))")
-(epoch 551)
-(eval "(lua-force 42)")
-
-EPOCHS2
-
-OUTPUT2=$(timeout 30 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
-OUTPUT="$OUTPUT
-$OUTPUT2"
-
-# math
-check 500 "math.abs(-7)"         '7'
-check 501 "math.floor(3.9)"      '3'
-check 502 "math.ceil(3.1)"       '4'
-check 503 "math.sqrt(9)"         '3'
-check 504 "math.sin(0)"          '0'
-check 505 "math.cos(0)"          '1'
-check 506 "math.max(3,7)"        '7'
-check 507 "math.min(3,7)"        '3'
-check 508 "math.pi > 3"          'true'
-check 509 "math.huge > 0"        'true'
-
-# string
-check 520 "string.len"           '5'
-check 521 "string.upper"         '"HELLO"'
-check 522 "string.lower"         '"world"'
-check 523 "string.sub(2,4)"      '"ell"'
-check 524 "string.rep(ab,3)"     '"ababab"'
-check 525 "string.reverse"       '"olleh"'
-check 526 "string.byte(A)"       '65'
-check 527 "string.char(72,105)"  '"Hi"'
-check 528 "string.find ll"       '3'
-check 529 "string.match ell"     '"ell"'
-check 530 "string.gsub l->r"     '"herro"'
-
-# table
-check 540 "table.insert"         '40'
-check 541 "table.remove"         'nil'
-check 542 "table.concat ,"       '"a,b,c"'
-check 543 "table.sort [1]"       '1'
-check 544 "table.sort [3]"       '3'
-
-# delay/force
-check 550 "lua-force delay"      '15'
-check 551 "lua-force non-promise" '42'
-
 TOTAL=$((PASS + FAIL))
 if [ $FAIL -eq 0 ]; then
   echo "ok $PASS/$TOTAL Lua-on-SX tests passed"

lib/prolog/compiler.sx

@@ -0,0 +1,176 @@
+;; lib/prolog/compiler.sx — clause compiler: parse-AST clauses → SX closures
+;;
+;; Each compiled clause is a lambda (fn (goal trail db cut-box k) bool)
+;; that creates fresh vars, builds the instantiated head/body, and calls
+;; pl-unify! + pl-solve! directly — no AST walk at solve time.
+;;
+;; Usage:
+;;   (pl-db-load! db (pl-parse src))
+;;   (pl-compile-db! db)
+;;   ; pl-solve-user! in runtime.sx automatically prefers compiled clauses
+;;   (pl-solve-once! db goal trail)
+
+;; Collect unique variable names from a parse-AST clause into a dict.
+(define
+  pl-cmp-vars-into!
+  (fn
+    (ast seen)
+    (cond
+      ((not (list? ast)) nil)
+      ((empty? ast) nil)
+      ((= (first ast) "var")
+        (let
+          ((name (nth ast 1)))
+          (when
+            (and (not (= name "_")) (not (dict-has? seen name)))
+            (dict-set! seen name true))))
+      ((= (first ast) "compound")
+        (for-each (fn (a) (pl-cmp-vars-into! a seen)) (nth ast 2)))
+      ((= (first ast) "clause")
+        (begin
+          (pl-cmp-vars-into! (nth ast 1) seen)
+          (pl-cmp-vars-into! (nth ast 2) seen))))))
+
+;; Return list of unique var names in a clause (head + body, excluding _).
+(define
+  pl-cmp-collect-vars
+  (fn
+    (clause)
+    (let ((seen {})) (pl-cmp-vars-into! clause seen) (keys seen))))
+
+;; Create a fresh runtime var for each name in the list; return name->var dict.
+(define
+  pl-cmp-make-var-map
+  (fn
+    (var-names)
+    (let
+      ((m {}))
+      (for-each
+        (fn (name) (dict-set! m name (pl-mk-rt-var name)))
+        var-names)
+      m)))
+
+;; Instantiate a parse-AST term using a pre-built var-map.
+;; ("var" "_") always gets a fresh anonymous var.
+(define
+  pl-cmp-build-term
+  (fn
+    (ast var-map)
+    (cond
+      ((pl-var? ast) ast)
+      ((not (list? ast)) ast)
+      ((empty? ast) ast)
+      ((= (first ast) "var")
+        (let
+          ((name (nth ast 1)))
+          (if (= name "_") (pl-mk-rt-var "_") (dict-get var-map name))))
+      ((or (= (first ast) "atom") (= (first ast) "num") (= (first ast) "str"))
+        ast)
+      ((= (first ast) "compound")
+        (list
+          "compound"
+          (nth ast 1)
+          (map (fn (a) (pl-cmp-build-term a var-map)) (nth ast 2))))
+      ((= (first ast) "clause")
+        (list
+          "clause"
+          (pl-cmp-build-term (nth ast 1) var-map)
+          (pl-cmp-build-term (nth ast 2) var-map)))
+      (true ast))))
+
+;; Compile one parse-AST clause to a lambda.
+;; Pre-computes var names at compile time; creates fresh vars per call.
+(define
+  pl-compile-clause
+  (fn
+    (clause)
+    (let
+      ((var-names (pl-cmp-collect-vars clause))
+        (head-ast (nth clause 1))
+        (body-ast (nth clause 2)))
+      (fn
+        (goal trail db cut-box k)
+        (let
+          ((var-map (pl-cmp-make-var-map var-names)))
+          (let
+            ((fresh-head (pl-cmp-build-term head-ast var-map))
+              (fresh-body (pl-cmp-build-term body-ast var-map)))
+            (let
+              ((mark (pl-trail-mark trail)))
+              (if
+                (pl-unify! goal fresh-head trail)
+                (let
+                  ((r (pl-solve! db fresh-body trail cut-box k)))
+                  (if r true (begin (pl-trail-undo-to! trail mark) false)))
+                (begin (pl-trail-undo-to! trail mark) false)))))))))
+
+;; Try a list of compiled clause lambdas — same cut semantics as pl-try-clauses!.
+(define
+  pl-try-compiled-clauses!
+  (fn
+    (db
+      goal
+      trail
+      compiled-clauses
+      outer-cut-box
+      outer-was-cut
+      inner-cut-box
+      k)
+    (cond
+      ((empty? compiled-clauses) false)
+      (true
+        (let
+          ((r ((first compiled-clauses) goal trail db inner-cut-box k)))
+          (cond
+            (r true)
+            ((dict-get inner-cut-box :cut) false)
+            ((and (not outer-was-cut) (dict-get outer-cut-box :cut)) false)
+            (true
+              (pl-try-compiled-clauses!
+                db
+                goal
+                trail
+                (rest compiled-clauses)
+                outer-cut-box
+                outer-was-cut
+                inner-cut-box
+                k))))))))
+
+;; Compile all clauses in DB and store in :compiled table.
+;; After this call, pl-solve-user! will dispatch via compiled lambdas.
+;; Note: clauses assert!-ed after this call are not compiled.
+(define
+  pl-compile-db!
+  (fn
+    (db)
+    (let
+      ((src-table (dict-get db :clauses)) (compiled-table {}))
+      (for-each
+        (fn
+          (key)
+          (dict-set!
+            compiled-table
+            key
+            (map pl-compile-clause (dict-get src-table key))))
+        (keys src-table))
+      (dict-set! db :compiled compiled-table)
+      db)))
+
+;; Cross-validate: load src into both a plain and a compiled DB,
+;; run goal-str through each, return true iff solution counts match.
+;; Use this to keep the interpreter as the reference implementation.
+(define
+  pl-compiled-matches-interp?
+  (fn
+    (src goal-str)
+    (let
+      ((db-interp (pl-mk-db)) (db-comp (pl-mk-db)))
+      (pl-db-load! db-interp (pl-parse src))
+      (pl-db-load! db-comp (pl-parse src))
+      (pl-compile-db! db-comp)
+      (let
+        ((gi (pl-instantiate (pl-parse-goal goal-str) {}))
+          (gc (pl-instantiate (pl-parse-goal goal-str) {})))
+        (=
+          (pl-solve-count! db-interp gi (pl-mk-trail))
+          (pl-solve-count! db-comp gc (pl-mk-trail)))))))

lib/prolog/conformance.sh

@@ -0,0 +1,129 @@
+#!/usr/bin/env bash
+# Run every Prolog test suite via sx_server and refresh scoreboard.{json,md}.
+# Exit 0 if all green, 1 if any failures.
+set -euo pipefail
+
+HERE="$(cd "$(dirname "$0")" && pwd)"
+ROOT="$(cd "$HERE/../.." && pwd)"
+SX="${SX_SERVER:-/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe}"
+
+if [[ ! -x "$SX" ]]; then
+  echo "sx_server not found at $SX (set SX_SERVER env to override)" >&2
+  exit 2
+fi
+
+cd "$ROOT"
+
+# name : test-file : runner-fn
+SUITES=(
+  "parse:lib/prolog/tests/parse.sx:pl-parse-tests-run!"
+  "unify:lib/prolog/tests/unify.sx:pl-unify-tests-run!"
+  "clausedb:lib/prolog/tests/clausedb.sx:pl-clausedb-tests-run!"
+  "solve:lib/prolog/tests/solve.sx:pl-solve-tests-run!"
+  "operators:lib/prolog/tests/operators.sx:pl-operators-tests-run!"
+  "dynamic:lib/prolog/tests/dynamic.sx:pl-dynamic-tests-run!"
+  "findall:lib/prolog/tests/findall.sx:pl-findall-tests-run!"
+  "term_inspect:lib/prolog/tests/term_inspect.sx:pl-term-inspect-tests-run!"
+  "append:lib/prolog/tests/programs/append.sx:pl-append-tests-run!"
+  "reverse:lib/prolog/tests/programs/reverse.sx:pl-reverse-tests-run!"
+  "member:lib/prolog/tests/programs/member.sx:pl-member-tests-run!"
+  "nqueens:lib/prolog/tests/programs/nqueens.sx:pl-nqueens-tests-run!"
+  "family:lib/prolog/tests/programs/family.sx:pl-family-tests-run!"
+  "atoms:lib/prolog/tests/atoms.sx:pl-atom-tests-run!"
+  "query_api:lib/prolog/tests/query_api.sx:pl-query-api-tests-run!"
+  "iso_predicates:lib/prolog/tests/iso_predicates.sx:pl-iso-predicates-tests-run!"
+  "meta_predicates:lib/prolog/tests/meta_predicates.sx:pl-meta-predicates-tests-run!"
+  "list_predicates:lib/prolog/tests/list_predicates.sx:pl-list-predicates-tests-run!"
+  "meta_call:lib/prolog/tests/meta_call.sx:pl-meta-call-tests-run!"
+  "set_predicates:lib/prolog/tests/set_predicates.sx:pl-set-predicates-tests-run!"
+  "char_predicates:lib/prolog/tests/char_predicates.sx:pl-char-predicates-tests-run!"
+  "io_predicates:lib/prolog/tests/io_predicates.sx:pl-io-predicates-tests-run!"
+  "assert_rules:lib/prolog/tests/assert_rules.sx:pl-assert-rules-tests-run!"
+  "string_agg:lib/prolog/tests/string_agg.sx:pl-string-agg-tests-run!"
+  "advanced:lib/prolog/tests/advanced.sx:pl-advanced-tests-run!"
+  "compiler:lib/prolog/tests/compiler.sx:pl-compiler-tests-run!"
+  "cross_validate:lib/prolog/tests/cross_validate.sx:pl-cross-validate-tests-run!"
+  "integration:lib/prolog/tests/integration.sx:pl-integration-tests-run!"
+  "hs_bridge:lib/prolog/tests/hs_bridge.sx:pl-hs-bridge-tests-run!"
+)
+
+SCRIPT='(epoch 1)
+(load "lib/prolog/tokenizer.sx")
+(load "lib/prolog/parser.sx")
+(load "lib/prolog/runtime.sx")
+(load "lib/prolog/query.sx")
+(load "lib/prolog/compiler.sx")
+(load "lib/prolog/hs-bridge.sx")'
+for entry in "${SUITES[@]}"; do
+  IFS=: read -r _ file _ <<< "$entry"
+  SCRIPT+=$'\n(load "'"$file"$'")'
+done
+for entry in "${SUITES[@]}"; do
+  IFS=: read -r _ _ fn <<< "$entry"
+  SCRIPT+=$'\n(eval "('"$fn"$')")'
+done
+
+OUTPUT="$(printf '%s\n' "$SCRIPT" | "$SX" 2>&1)"
+
+mapfile -t LINES < <(printf '%s\n' "$OUTPUT" | grep -E '^\{:failed')
+
+if [[ ${#LINES[@]} -ne ${#SUITES[@]} ]]; then
+  echo "Expected ${#SUITES[@]} suite results, got ${#LINES[@]}" >&2
+  echo "---- raw output ----" >&2
+  printf '%s\n' "$OUTPUT" >&2
+  exit 3
+fi
+
+TOTAL_PASS=0
+TOTAL_FAIL=0
+TOTAL=0
+JSON_SUITES=""
+MD_ROWS=""
+
+for i in "${!SUITES[@]}"; do
+  IFS=: read -r name _ _ <<< "${SUITES[$i]}"
+  line="${LINES[$i]}"
+  passed=$(grep -oE ':passed [0-9]+' <<< "$line" | grep -oE '[0-9]+')
+  total=$(grep -oE ':total [0-9]+' <<< "$line" | grep -oE '[0-9]+')
+  failed=$(grep -oE ':failed [0-9]+' <<< "$line" | grep -oE '[0-9]+')
+  TOTAL_PASS=$((TOTAL_PASS + passed))
+  TOTAL_FAIL=$((TOTAL_FAIL + failed))
+  TOTAL=$((TOTAL + total))
+  status="ok"
+  [[ "$failed" -gt 0 ]] && status="FAIL"
+  [[ -n "$JSON_SUITES" ]] && JSON_SUITES+=","
+  JSON_SUITES+="\"$name\":{\"passed\":$passed,\"total\":$total,\"failed\":$failed}"
+  MD_ROWS+="| $name | $passed | $total | $status |"$'\n'
+done
+
+WHEN="$(date -Iseconds 2>/dev/null || date)"
+
+cat > "$HERE/scoreboard.json" <<JSON
+{
+  "total_passed": $TOTAL_PASS,
+  "total_failed": $TOTAL_FAIL,
+  "total": $TOTAL,
+  "suites": {$JSON_SUITES},
+  "generated": "$WHEN"
+}
+JSON
+
+cat > "$HERE/scoreboard.md" <<MD
+# Prolog scoreboard
+
+**$TOTAL_PASS / $TOTAL passing** ($TOTAL_FAIL failure(s)).
+Generated $WHEN.
+
+| Suite | Passed | Total | Status |
+|-------|--------|-------|--------|
+$MD_ROWS
+Run \`bash lib/prolog/conformance.sh\` to refresh. Override the binary
+with \`SX_SERVER=path/to/sx_server.exe bash …\`.
+MD
+
+if [[ "$TOTAL_FAIL" -gt 0 ]]; then
+  echo "$TOTAL_FAIL failure(s) across $TOTAL tests" >&2
+  exit 1
+fi
+
+echo "All $TOTAL tests pass."

lib/prolog/hs-bridge.sx

@@ -0,0 +1,72 @@
+;; lib/prolog/hs-bridge.sx — Prolog↔Hyperscript bridge
+;;
+;; Creates SX functions backed by a Prolog DB, callable directly from
+;; Hyperscript DSL conditions.  No parser/compiler changes needed:
+;;   when allowed(user, action) then …
+;; compiles to (allowed user action) — a plain SX call.
+;;
+;; Setup:
+;;   (define pl-db (pl-load "role(alice,admin). permission(admin,edit). allowed(U,A) :- role(U,R), permission(R,A)."))
+;;   (define allowed (pl-hs-predicate/2 pl-db "allowed"))
+;;
+;; Requires tokenizer.sx, parser.sx, runtime.sx, query.sx loaded first.
+
+;; Test whether a ground Prolog goal succeeds against db.
+;; Returns true/false (not a solution dict).
+(define
+  pl-hs-query
+  (fn (db goal-str) (not (nil? (pl-query-one db goal-str)))))
+
+;; Build a Prolog goal string from a predicate name and arg list.
+;; SX values: strings/keywords (already strings in SX) pass through;
+;; numbers are stringified via str.
+(define
+  pl-hs-build-goal
+  (fn
+    (pred-name args)
+    (str pred-name "(" (join ", " (map (fn (a) (str a)) args)) ")")))
+
+;; Return a 1-arg SX function that succeeds iff pred(a) holds in db.
+(define
+  pl-hs-predicate/1
+  (fn
+    (db pred-name)
+    (fn (a) (pl-hs-query db (pl-hs-build-goal pred-name (list a))))))
+
+;; Return a 2-arg SX function that succeeds iff pred(a, b) holds in db.
+(define
+  pl-hs-predicate/2
+  (fn
+    (db pred-name)
+    (fn (a b) (pl-hs-query db (pl-hs-build-goal pred-name (list a b))))))
+
+;; Return a 3-arg SX function that succeeds iff pred(a, b, c) holds in db.
+(define
+  pl-hs-predicate/3
+  (fn
+    (db pred-name)
+    (fn (a b c) (pl-hs-query db (pl-hs-build-goal pred-name (list a b c))))))
+
+;; Install every predicate in install-list as a named def in the caller's
+;; environment.  install-list: list of (name arity) pairs.
+;; Returns a dict {name → fn} for the caller to destructure.
+(define
+  pl-hs-install
+  (fn
+    (db install-list)
+    (reduce
+      (fn
+        (acc entry)
+        (let
+          ((pred-name (first entry)) (arity (nth entry 1)))
+          (dict-set!
+            acc
+            pred-name
+            (cond
+              ((= arity 1) (pl-hs-predicate/1 db pred-name))
+              ((= arity 2) (pl-hs-predicate/2 db pred-name))
+              ((= arity 3) (pl-hs-predicate/3 db pred-name))
+              (true (fn (a b) false))))
+          acc))
+      {}
+      install-list)))

lib/prolog/parser.sx

@@ -1,28 +1,20 @@
 ;; lib/prolog/parser.sx — tokens → Prolog AST
 ;;
-;; Phase 1 grammar (NO operator table yet):
+;; Phase 4 grammar (with operator table):
 ;;   Program      := Clause* EOF
-;;   Clause       := Term "." | Term ":-" Term "."
-;;   Term         := Atom | Var | Number | String | Compound | List
-;;   Compound     := atom "(" ArgList ")"
-;;   ArgList      := Term ("," Term)*
-;;   List         := "[" "]" | "[" Term ("," Term)* ("|" Term)? "]"
+;;   Clause       := Term[999] "." | Term[999] ":-" Term[1200] "."
+;;   Term[Pmax] uses precedence climbing on the operator table:
+;;     primary = Atom | Var | Number | String | Compound | List | "(" Term[1200] ")"
+;;     while next token is infix op `op` with prec(op) ≤ Pmax:
+;;       consume op; parse rhs at right-prec(op); fold into compound(op-name,[lhs,rhs])
 ;;
-;; Term AST shapes (all tagged lists for uniform dispatch):
-;;   ("atom"  name)            — atom
-;;   ("var"   name)            — variable template (parser-time only)
-;;   ("num"   value)           — integer or float
-;;   ("str"   value)           — string literal
-;;   ("compound" functor args) — compound term, args is list of term-ASTs
-;;   ("cut")                   — the cut atom !
+;; Op type → right-prec for op at precedence P:
+;;   xfx → P-1   strict-both
+;;   xfy → P     right-associative
+;;   yfx → P-1   left-associative
 ;;
-;; A clause is (list "clause" head body). A fact is head with body = ("atom" "true").
-;;
-;; The empty list is (atom "[]"). Cons is compound "." with two args:
-;; [1, 2, 3]   → .(1, .(2, .(3, [])))
-;; [H|T]       → .(H, T)
+;; AST shapes are unchanged — operators just become compound terms.
 
-;; ── Parser state helpers ────────────────────────────────────────────
 (define
   pp-peek
   (fn
@@ -66,7 +58,6 @@
             (if (= (get t :value) nil) "" (get t :value))
             "'"))))))
 
-;; ── AST constructors ────────────────────────────────────────────────
 (define pl-mk-atom (fn (name) (list "atom" name)))
 (define pl-mk-var (fn (name) (list "var" name)))
 (define pl-mk-num (fn (n) (list "num" n)))
@@ -74,18 +65,14 @@
 (define pl-mk-compound (fn (f args) (list "compound" f args)))
 (define pl-mk-cut (fn () (list "cut")))
 
-;; Term tag extractors
 (define pl-term-tag (fn (t) (if (list? t) (first t) nil)))
 (define pl-term-val (fn (t) (nth t 1)))
 (define pl-compound-functor (fn (t) (nth t 1)))
 (define pl-compound-args (fn (t) (nth t 2)))
 
-;; Empty-list atom and cons helpers
 (define pl-nil-term (fn () (pl-mk-atom "[]")))
-
 (define pl-mk-cons (fn (h t) (pl-mk-compound "." (list h t))))
 
-;; Build cons list from a list of terms + optional tail
 (define
   pl-mk-list-term
   (fn
@@ -95,9 +82,61 @@
       tail
       (pl-mk-cons (first items) (pl-mk-list-term (rest items) tail)))))
 
-;; ── Term parser ─────────────────────────────────────────────────────
+;; ── Operator table (Phase 4) ──────────────────────────────────────
+;; Each entry: (name precedence type). Type ∈ "xfx" "xfy" "yfx".
 (define
-  pp-parse-term
+  pl-op-table
+  (list
+    (list "," 1000 "xfy")
+    (list ";" 1100 "xfy")
+    (list "->" 1050 "xfy")
+    (list "=" 700 "xfx")
+    (list "\\=" 700 "xfx")
+    (list "is" 700 "xfx")
+    (list "<" 700 "xfx")
+    (list ">" 700 "xfx")
+    (list "=<" 700 "xfx")
+    (list ">=" 700 "xfx")
+    (list "+" 500 "yfx")
+    (list "-" 500 "yfx")
+    (list "*" 400 "yfx")
+    (list "/" 400 "yfx")
+    (list ":-" 1200 "xfx")
+    (list "mod" 400 "yfx")))
+
+(define
+  pl-op-find
+  (fn
+    (name table)
+    (cond
+      ((empty? table) nil)
+      ((= (first (first table)) name) (rest (first table)))
+      (true (pl-op-find name (rest table))))))
+
+(define pl-op-lookup (fn (name) (pl-op-find name pl-op-table)))
+
+;; Token → (name prec type) for known infix ops, else nil.
+(define
+  pl-token-op
+  (fn
+    (t)
+    (let
+      ((ty (get t :type)) (vv (get t :value)))
+      (cond
+        ((and (= ty "punct") (= vv ","))
+          (let
+            ((info (pl-op-lookup ",")))
+            (if (nil? info) nil (cons "," info))))
+        ((or (= ty "atom") (= ty "op"))
+          (let
+            ((info (pl-op-lookup vv)))
+            (if (nil? info) nil (cons vv info))))
+        (true nil)))))
+
+;; ── Term parser ─────────────────────────────────────────────────────
+;; Primary term: atom, var, num, str, compound (atom + paren), list, cut, parens.
+(define
+  pp-parse-primary
   (fn
     (st)
     (let
@@ -111,6 +150,12 @@
           ((and (= ty "op") (= vv "!"))
             (do (pp-advance! st) (pl-mk-cut)))
           ((and (= ty "punct") (= vv "[")) (pp-parse-list st))
+          ((and (= ty "punct") (= vv "("))
+            (do
+              (pp-advance! st)
+              (let
+                ((inner (pp-parse-term-prec st 1200)))
+                (do (pp-expect! st "punct" ")") inner))))
           ((= ty "atom")
             (do
               (pp-advance! st)
@@ -133,13 +178,51 @@
                 (if (= vv nil) "" vv)
                 "'"))))))))
 
-;; Parse one or more comma-separated terms (arguments).
+;; Operator-aware term parser: precedence climbing.
+(define
+  pp-parse-term-prec
+  (fn
+    (st max-prec)
+    (let ((left (pp-parse-primary st))) (pp-parse-op-rhs st left max-prec))))
+
+(define
+  pp-parse-op-rhs
+  (fn
+    (st left max-prec)
+    (let
+      ((op-info (pl-token-op (pp-peek st))))
+      (cond
+        ((nil? op-info) left)
+        (true
+          (let
+            ((name (first op-info))
+              (prec (nth op-info 1))
+              (ty (nth op-info 2)))
+            (cond
+              ((> prec max-prec) left)
+              (true
+                (let
+                  ((right-prec (if (= ty "xfy") prec (- prec 1))))
+                  (do
+                    (pp-advance! st)
+                    (let
+                      ((right (pp-parse-term-prec st right-prec)))
+                      (pp-parse-op-rhs
+                        st
+                        (pl-mk-compound name (list left right))
+                        max-prec))))))))))))
+
+;; Backwards-compat alias.
+(define pp-parse-term (fn (st) (pp-parse-term-prec st 999)))
+
+;; Args inside parens: parse at prec 999 so comma-as-operator (1000)
+;; is not consumed; the explicit comma loop handles separation.
 (define
   pp-parse-arg-list
   (fn
     (st)
     (let
-      ((first-arg (pp-parse-term st)) (args (list)))
+      ((first-arg (pp-parse-term-prec st 999)) (args (list)))
       (do
         (append! args first-arg)
         (define
@@ -150,12 +233,12 @@
               (pp-at? st "punct" ",")
               (do
                 (pp-advance! st)
-                (append! args (pp-parse-term st))
+                (append! args (pp-parse-term-prec st 999))
                 (loop)))))
         (loop)
         args))))
 
-;; Parse a [ ... ] list literal. Consumes the "[".
+;; List literal.
 (define
   pp-parse-list
   (fn
@@ -168,7 +251,7 @@
         (let
           ((items (list)))
           (do
-            (append! items (pp-parse-term st))
+            (append! items (pp-parse-term-prec st 999))
             (define
               comma-loop
               (fn
@@ -177,52 +260,17 @@
                   (pp-at? st "punct" ",")
                   (do
                     (pp-advance! st)
-                    (append! items (pp-parse-term st))
+                    (append! items (pp-parse-term-prec st 999))
                     (comma-loop)))))
             (comma-loop)
             (let
-              ((tail (if (pp-at? st "punct" "|") (do (pp-advance! st) (pp-parse-term st)) (pl-nil-term))))
+              ((tail (if (pp-at? st "punct" "|") (do (pp-advance! st) (pp-parse-term-prec st 999)) (pl-nil-term))))
               (do (pp-expect! st "punct" "]") (pl-mk-list-term items tail)))))))))
 
 ;; ── Body parsing ────────────────────────────────────────────────────
-;; A clause body is a comma-separated list of goals. We flatten into a
-;; right-associative `,` compound: (A, B, C) → ','(A, ','(B, C))
-;; If only one goal, it's that goal directly.
-(define
-  pp-parse-body
-  (fn
-    (st)
-    (let
-      ((first-goal (pp-parse-term st)) (rest-goals (list)))
-      (do
-        (define
-          gloop
-          (fn
-            ()
-            (when
-              (pp-at? st "punct" ",")
-              (do
-                (pp-advance! st)
-                (append! rest-goals (pp-parse-term st))
-                (gloop)))))
-        (gloop)
-        (if
-          (= (len rest-goals) 0)
-          first-goal
-          (pp-build-conj first-goal rest-goals))))))
-
-(define
-  pp-build-conj
-  (fn
-    (first-goal rest-goals)
-    (if
-      (= (len rest-goals) 0)
-      first-goal
-      (pl-mk-compound
-        ","
-        (list
-          first-goal
-          (pp-build-conj (first rest-goals) (rest rest-goals)))))))
+;; A body is a single term parsed at prec 1200 — operator parser folds
+;; `,`, `;`, `->` automatically into right-associative compounds.
+(define pp-parse-body (fn (st) (pp-parse-term-prec st 1200)))
 
 ;; ── Clause parsing ──────────────────────────────────────────────────
 (define
@@ -230,12 +278,11 @@
   (fn
     (st)
     (let
-      ((head (pp-parse-term st)))
+      ((head (pp-parse-term-prec st 999)))
       (let
         ((body (if (pp-at? st "op" ":-") (do (pp-advance! st) (pp-parse-body st)) (pl-mk-atom "true"))))
         (do (pp-expect! st "punct" ".") (list "clause" head body))))))
 
-;; Parse an entire program — returns list of clauses.
 (define
   pl-parse-program
   (fn
@@ -253,13 +300,9 @@
         (ploop)
         clauses))))
 
-;; Parse a single query term (no trailing "."). Returns the term.
 (define
   pl-parse-query
   (fn (tokens) (let ((st {:idx 0 :tokens tokens})) (pp-parse-body st))))
 
-;; Convenience: source → clauses
 (define pl-parse (fn (src) (pl-parse-program (pl-tokenize src))))
-
-;; Convenience: source → query term
 (define pl-parse-goal (fn (src) (pl-parse-query (pl-tokenize src))))

lib/prolog/query.sx

@@ -0,0 +1,114 @@
+;; lib/prolog/query.sx — high-level Prolog query API for SX/Hyperscript callers.
+;;
+;; Requires tokenizer.sx, parser.sx, runtime.sx to be loaded first.
+;;
+;; Public API:
+;;   (pl-load source-str)                → db
+;;   (pl-query-all db query-str)         → list of solution dicts {var-name → term-string}
+;;   (pl-query-one db query-str)         → first solution dict or nil
+;;   (pl-query source-str query-str)     → list of solution dicts (convenience)
+
+;; Collect variable name strings from a parse-time AST (pre-instantiation).
+;; Returns list of unique strings, excluding anonymous "_".
+(define
+  pl-query-extract-vars
+  (fn
+    (ast)
+    (let
+      ((seen {}))
+      (let
+        ((collect!
+          (fn
+            (t)
+            (cond
+              ((not (list? t)) nil)
+              ((empty? t) nil)
+              ((= (first t) "var")
+                (if
+                  (not (= (nth t 1) "_"))
+                  (dict-set! seen (nth t 1) true)
+                  nil))
+              ((= (first t) "compound")
+                (for-each collect! (nth t 2)))
+              (true nil)))))
+        (collect! ast)
+        (keys seen)))))
+
+;; Build a solution dict from a var-env after a successful solve.
+;; Maps each variable name string to its formatted term value.
+(define
+  pl-query-solution-dict
+  (fn
+    (var-names var-env)
+    (let
+      ((d {}))
+      (for-each
+        (fn (name) (dict-set! d name (pl-format-term (dict-get var-env name))))
+        var-names)
+      d)))
+
+;; Parse source-str and load clauses into a fresh DB.
+;; Returns the DB for reuse across multiple queries.
+(define
+  pl-load
+  (fn
+    (source-str)
+    (let
+      ((db (pl-mk-db)))
+      (if
+        (and (string? source-str) (not (= source-str "")))
+        (pl-db-load! db (pl-parse source-str))
+        nil)
+      db)))
+
+;; Run query-str against db, returning a list of solution dicts.
+;; Each dict maps variable name strings to their formatted term values.
+;; Returns an empty list if no solutions.
+(define
+  pl-query-all
+  (fn
+    (db query-str)
+    (let
+      ((parsed (pl-parse (str "q_ :- " query-str "."))))
+      (let
+        ((body-ast (nth (first parsed) 2)))
+        (let
+          ((var-names (pl-query-extract-vars body-ast))
+           (var-env {}))
+          (let
+            ((goal (pl-instantiate body-ast var-env))
+             (trail (pl-mk-trail))
+             (solutions (list)))
+            (let
+              ((mark (pl-trail-mark trail)))
+              (pl-solve!
+                db
+                goal
+                trail
+                {:cut false}
+                (fn
+                  ()
+                  (begin
+                    (append!
+                      solutions
+                      (pl-query-solution-dict var-names var-env))
+                    false)))
+              (pl-trail-undo-to! trail mark)
+              solutions)))))))
+
+;; Return the first solution dict, or nil if no solutions.
+(define
+  pl-query-one
+  (fn
+    (db query-str)
+    (let
+      ((all (pl-query-all db query-str)))
+      (if (empty? all) nil (first all)))))
+
+;; Convenience: parse source-str, then run query-str against it.
+;; Returns a list of solution dicts. Creates a fresh DB each call.
+(define
+  pl-query
+  (fn
+    (source-str query-str)
+    (pl-query-all (pl-load source-str) query-str)))

lib/prolog/scoreboard.json

@@ -0,0 +1,7 @@
+{
+  "total_passed": 590,
+  "total_failed": 0,
+  "total": 590,
+  "suites": {"parse":{"passed":25,"total":25,"failed":0},"unify":{"passed":47,"total":47,"failed":0},"clausedb":{"passed":14,"total":14,"failed":0},"solve":{"passed":62,"total":62,"failed":0},"operators":{"passed":19,"total":19,"failed":0},"dynamic":{"passed":11,"total":11,"failed":0},"findall":{"passed":11,"total":11,"failed":0},"term_inspect":{"passed":14,"total":14,"failed":0},"append":{"passed":6,"total":6,"failed":0},"reverse":{"passed":6,"total":6,"failed":0},"member":{"passed":7,"total":7,"failed":0},"nqueens":{"passed":6,"total":6,"failed":0},"family":{"passed":10,"total":10,"failed":0},"atoms":{"passed":34,"total":34,"failed":0},"query_api":{"passed":16,"total":16,"failed":0},"iso_predicates":{"passed":29,"total":29,"failed":0},"meta_predicates":{"passed":25,"total":25,"failed":0},"list_predicates":{"passed":33,"total":33,"failed":0},"meta_call":{"passed":15,"total":15,"failed":0},"set_predicates":{"passed":15,"total":15,"failed":0},"char_predicates":{"passed":27,"total":27,"failed":0},"io_predicates":{"passed":24,"total":24,"failed":0},"assert_rules":{"passed":15,"total":15,"failed":0},"string_agg":{"passed":25,"total":25,"failed":0},"advanced":{"passed":21,"total":21,"failed":0},"compiler":{"passed":17,"total":17,"failed":0},"cross_validate":{"passed":17,"total":17,"failed":0},"integration":{"passed":20,"total":20,"failed":0},"hs_bridge":{"passed":19,"total":19,"failed":0}},
+  "generated": "2026-05-06T08:29:09+00:00"
+}

lib/prolog/scoreboard.md

@@ -0,0 +1,39 @@
+# Prolog scoreboard
+
+**590 / 590 passing** (0 failure(s)).
+Generated 2026-05-06T08:29:09+00:00.
+
+| Suite | Passed | Total | Status |
+|-------|--------|-------|--------|
+| parse | 25 | 25 | ok |
+| unify | 47 | 47 | ok |
+| clausedb | 14 | 14 | ok |
+| solve | 62 | 62 | ok |
+| operators | 19 | 19 | ok |
+| dynamic | 11 | 11 | ok |
+| findall | 11 | 11 | ok |
+| term_inspect | 14 | 14 | ok |
+| append | 6 | 6 | ok |
+| reverse | 6 | 6 | ok |
+| member | 7 | 7 | ok |
+| nqueens | 6 | 6 | ok |
+| family | 10 | 10 | ok |
+| atoms | 34 | 34 | ok |
+| query_api | 16 | 16 | ok |
+| iso_predicates | 29 | 29 | ok |
+| meta_predicates | 25 | 25 | ok |
+| list_predicates | 33 | 33 | ok |
+| meta_call | 15 | 15 | ok |
+| set_predicates | 15 | 15 | ok |
+| char_predicates | 27 | 27 | ok |
+| io_predicates | 24 | 24 | ok |
+| assert_rules | 15 | 15 | ok |
+| string_agg | 25 | 25 | ok |
+| advanced | 21 | 21 | ok |
+| compiler | 17 | 17 | ok |
+| cross_validate | 17 | 17 | ok |
+| integration | 20 | 20 | ok |
+| hs_bridge | 19 | 19 | ok |
+
+Run `bash lib/prolog/conformance.sh` to refresh. Override the binary
+with `SX_SERVER=path/to/sx_server.exe bash …`.

lib/prolog/tests/advanced.sx

@@ -0,0 +1,254 @@
+;; lib/prolog/tests/advanced.sx — predsort/3, term_variables/2, arith extensions
+
+(define pl-adv-test-count 0)
+(define pl-adv-test-pass 0)
+(define pl-adv-test-fail 0)
+(define pl-adv-test-failures (list))
+
+(define
+  pl-adv-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-adv-test-count (+ pl-adv-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-adv-test-pass (+ pl-adv-test-pass 1))
+        (begin
+          (set! pl-adv-test-fail (+ pl-adv-test-fail 1))
+          (append!
+            pl-adv-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-adv-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-adv-db (pl-mk-db))
+;; Load a numeric comparator for predsort tests
+(pl-db-load!
+  pl-adv-db
+  (pl-parse
+    "cmp_num(Order, X, Y) :- (X < Y -> Order = '<' ; (X > Y -> Order = '>' ; Order = '='))."))
+
+;; ── Arithmetic extensions ──────────────────────────────────────────
+
+(define pl-adv-arith-env-1 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is floor(3.7)" pl-adv-arith-env-1)
+  (pl-mk-trail))
+(pl-adv-test!
+  "floor(3.7) = 3"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-1 "X")))
+  3)
+
+(define pl-adv-arith-env-2 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is ceiling(3.2)" pl-adv-arith-env-2)
+  (pl-mk-trail))
+(pl-adv-test!
+  "ceiling(3.2) = 4"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-2 "X")))
+  4)
+
+(define pl-adv-arith-env-3 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is truncate(3.9)" pl-adv-arith-env-3)
+  (pl-mk-trail))
+(pl-adv-test!
+  "truncate(3.9) = 3"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-3 "X")))
+  3)
+
+(define pl-adv-arith-env-4 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is truncate(0 - 3.9)" pl-adv-arith-env-4)
+  (pl-mk-trail))
+(pl-adv-test!
+  "truncate(0-3.9) = -3"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-4 "X")))
+  -3)
+
+(define pl-adv-arith-env-5 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is round(3.5)" pl-adv-arith-env-5)
+  (pl-mk-trail))
+(pl-adv-test!
+  "round(3.5) = 4"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-5 "X")))
+  4)
+
+(define pl-adv-arith-env-6 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is sqrt(4.0)" pl-adv-arith-env-6)
+  (pl-mk-trail))
+(pl-adv-test!
+  "sqrt(4.0) = 2"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-6 "X")))
+  2)
+
+(define pl-adv-arith-env-7 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is sign(0 - 5)" pl-adv-arith-env-7)
+  (pl-mk-trail))
+(pl-adv-test!
+  "sign(0-5) = -1"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-7 "X")))
+  -1)
+
+(define pl-adv-arith-env-8 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is sign(0)" pl-adv-arith-env-8)
+  (pl-mk-trail))
+(pl-adv-test!
+  "sign(0) = 0"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-8 "X")))
+  0)
+
+(define pl-adv-arith-env-9 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is sign(3)" pl-adv-arith-env-9)
+  (pl-mk-trail))
+(pl-adv-test!
+  "sign(3) = 1"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-9 "X")))
+  1)
+
+(define pl-adv-arith-env-10 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is pow(2, 3)" pl-adv-arith-env-10)
+  (pl-mk-trail))
+(pl-adv-test!
+  "pow(2,3) = 8"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-10 "X")))
+  8)
+
+(define pl-adv-arith-env-11 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is floor(0 - 3.7)" pl-adv-arith-env-11)
+  (pl-mk-trail))
+(pl-adv-test!
+  "floor(0-3.7) = -4"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-11 "X")))
+  -4)
+
+(define pl-adv-arith-env-12 {:X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "X is ceiling(0 - 3.2)" pl-adv-arith-env-12)
+  (pl-mk-trail))
+(pl-adv-test!
+  "ceiling(0-3.2) = -3"
+  (pl-num-val (pl-walk-deep (dict-get pl-adv-arith-env-12 "X")))
+  -3)
+
+;; ── term_variables/2 ──────────────────────────────────────────────
+
+(define pl-adv-tv-env-1 {:Vs (pl-mk-rt-var "Vs")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "term_variables(hello, Vs)" pl-adv-tv-env-1)
+  (pl-mk-trail))
+(pl-adv-test!
+  "term_variables(hello,Vs) -> []"
+  (pl-format-term (pl-walk-deep (dict-get pl-adv-tv-env-1 "Vs")))
+  "[]")
+
+(define pl-adv-tv-env-2 {:Vs (pl-mk-rt-var "Vs")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "term_variables(f(a, g(b)), Vs)" pl-adv-tv-env-2)
+  (pl-mk-trail))
+(pl-adv-test!
+  "term_variables(f(a,g(b)),Vs) -> []"
+  (pl-format-term (pl-walk-deep (dict-get pl-adv-tv-env-2 "Vs")))
+  "[]")
+
+(define pl-adv-tv-env-3 {:Y (pl-mk-rt-var "Y") :Vs (pl-mk-rt-var "Vs") :X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "term_variables(f(X, Y), Vs)" pl-adv-tv-env-3)
+  (pl-mk-trail))
+(pl-adv-test!
+  "term_variables(f(X,Y),Vs) has 2 vars"
+  (pl-list-length (pl-walk-deep (dict-get pl-adv-tv-env-3 "Vs")))
+  2)
+
+(define pl-adv-tv-env-4 {:Vs (pl-mk-rt-var "Vs") :X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "term_variables(X, Vs)" pl-adv-tv-env-4)
+  (pl-mk-trail))
+(pl-adv-test!
+  "term_variables(X,Vs) has 1 var"
+  (pl-list-length (pl-walk-deep (dict-get pl-adv-tv-env-4 "Vs")))
+  1)
+
+(define pl-adv-tv-env-5 {:Y (pl-mk-rt-var "Y") :Vs (pl-mk-rt-var "Vs") :X (pl-mk-rt-var "X")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "term_variables(foo(X, Y, X), Vs)" pl-adv-tv-env-5)
+  (pl-mk-trail))
+(pl-adv-test!
+  "term_variables(foo(X,Y,X),Vs) deduplicates X -> 2 vars"
+  (pl-list-length (pl-walk-deep (dict-get pl-adv-tv-env-5 "Vs")))
+  2)
+
+;; ── predsort/3 ────────────────────────────────────────────────────
+
+(define pl-adv-ps-env-1 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "predsort(cmp_num, [], R)" pl-adv-ps-env-1)
+  (pl-mk-trail))
+(pl-adv-test!
+  "predsort([]) -> []"
+  (pl-format-term (pl-walk-deep (dict-get pl-adv-ps-env-1 "R")))
+  "[]")
+
+(define pl-adv-ps-env-2 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "predsort(cmp_num, [1], R)" pl-adv-ps-env-2)
+  (pl-mk-trail))
+(pl-adv-test!
+  "predsort([1]) -> [1]"
+  (pl-format-term (pl-walk-deep (dict-get pl-adv-ps-env-2 "R")))
+  ".(1, [])")
+
+(define pl-adv-ps-env-3 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "predsort(cmp_num, [3,1,2], R)" pl-adv-ps-env-3)
+  (pl-mk-trail))
+(pl-adv-test!
+  "predsort([3,1,2]) -> [1,2,3]"
+  (pl-format-term (pl-walk-deep (dict-get pl-adv-ps-env-3 "R")))
+  ".(1, .(2, .(3, [])))")
+
+(define pl-adv-ps-env-4 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-adv-db
+  (pl-adv-goal "predsort(cmp_num, [3,1,2,1,3], R)" pl-adv-ps-env-4)
+  (pl-mk-trail))
+(pl-adv-test!
+  "predsort([3,1,2,1,3]) dedup -> [1,2,3]"
+  (pl-format-term (pl-walk-deep (dict-get pl-adv-ps-env-4 "R")))
+  ".(1, .(2, .(3, [])))")
+
+;; ── Runner ─────────────────────────────────────────────────────────
+
+(define pl-advanced-tests-run! (fn () {:failed pl-adv-test-fail :passed pl-adv-test-pass :total pl-adv-test-count :failures pl-adv-test-failures}))

lib/prolog/tests/assert_rules.sx

@@ -0,0 +1,215 @@
+;; lib/prolog/tests/assert_rules.sx — assert/assertz/asserta with rule terms (head :- body)
+;; Tests that :- is in the op table (prec 1200 xfx) and pl-build-clause handles rule form.
+
+(define pl-ar-test-count 0)
+(define pl-ar-test-pass 0)
+(define pl-ar-test-fail 0)
+(define pl-ar-test-failures (list))
+
+(define
+  pl-ar-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-ar-test-count (+ pl-ar-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-ar-test-pass (+ pl-ar-test-pass 1))
+        (begin
+          (set! pl-ar-test-fail (+ pl-ar-test-fail 1))
+          (append!
+            pl-ar-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-ar-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+;; ── DB1: assertz a simple rule then query ──────────────────────────
+(define pl-ar-db1 (pl-mk-db))
+
+(pl-solve-once!
+  pl-ar-db1
+  (pl-ar-goal "assertz((double(X, Y) :- Y is X * 2))" {})
+  (pl-mk-trail))
+
+(pl-ar-test!
+  "assertz rule: double(3, Y) succeeds"
+  (pl-solve-once!
+    pl-ar-db1
+    (pl-ar-goal "double(3, Y)" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-ar-env1 {})
+(pl-solve-once!
+  pl-ar-db1
+  (pl-ar-goal "double(3, Y)" pl-ar-env1)
+  (pl-mk-trail))
+
+(pl-ar-test!
+  "assertz rule: double(3, Y) binds Y to 6"
+  (pl-num-val (pl-walk-deep (dict-get pl-ar-env1 "Y")))
+  6)
+
+(define pl-ar-env1b {})
+(pl-solve-once!
+  pl-ar-db1
+  (pl-ar-goal "double(10, Y)" pl-ar-env1b)
+  (pl-mk-trail))
+
+(pl-ar-test!
+  "assertz rule: double(10, Y) yields 20"
+  (pl-num-val (pl-walk-deep (dict-get pl-ar-env1b "Y")))
+  20)
+
+;; ── DB2: assert a rule with multiple facts, count solutions ─────────
+(define pl-ar-db2 (pl-mk-db))
+
+(pl-solve-once!
+  pl-ar-db2
+  (pl-ar-goal "assert(fact(a))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-ar-db2
+  (pl-ar-goal "assert(fact(b))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-ar-db2
+  (pl-ar-goal "assertz((copy(X) :- fact(X)))" {})
+  (pl-mk-trail))
+
+(pl-ar-test!
+  "rule copy/1 using fact/1: 2 solutions"
+  (pl-solve-count! pl-ar-db2 (pl-ar-goal "copy(X)" {}) (pl-mk-trail))
+  2)
+
+(define pl-ar-env2a {})
+(pl-solve-once! pl-ar-db2 (pl-ar-goal "copy(X)" pl-ar-env2a) (pl-mk-trail))
+
+(pl-ar-test!
+  "rule copy/1: first solution is a"
+  (pl-atom-name (pl-walk-deep (dict-get pl-ar-env2a "X")))
+  "a")
+
+;; ── DB3: asserta rule is tried before existing clauses ─────────────
+(define pl-ar-db3 (pl-mk-db))
+
+(pl-solve-once!
+  pl-ar-db3
+  (pl-ar-goal "assert(ord(a))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-ar-db3
+  (pl-ar-goal "asserta((ord(b) :- true))" {})
+  (pl-mk-trail))
+
+(define pl-ar-env3 {})
+(pl-solve-once! pl-ar-db3 (pl-ar-goal "ord(X)" pl-ar-env3) (pl-mk-trail))
+
+(pl-ar-test!
+  "asserta rule ord(b) is tried before ord(a)"
+  (pl-atom-name (pl-walk-deep (dict-get pl-ar-env3 "X")))
+  "b")
+
+(pl-ar-test!
+  "asserta: total solutions for ord/1 is 2"
+  (pl-solve-count! pl-ar-db3 (pl-ar-goal "ord(X)" {}) (pl-mk-trail))
+  2)
+
+;; ── DB4: rule with conjunction in body ─────────────────────────────
+(define pl-ar-db4 (pl-mk-db))
+
+(pl-solve-once!
+  pl-ar-db4
+  (pl-ar-goal "assert(num(1))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-ar-db4
+  (pl-ar-goal "assert(num(2))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-ar-db4
+  (pl-ar-goal "assertz((big(X) :- num(X), X > 1))" {})
+  (pl-mk-trail))
+
+(pl-ar-test!
+  "conjunction in rule body: big(1) fails"
+  (pl-solve-once! pl-ar-db4 (pl-ar-goal "big(1)" {}) (pl-mk-trail))
+  false)
+
+(pl-ar-test!
+  "conjunction in rule body: big(2) succeeds"
+  (pl-solve-once! pl-ar-db4 (pl-ar-goal "big(2)" {}) (pl-mk-trail))
+  true)
+
+;; ── DB5: recursive rule ─────────────────────────────────────────────
+(define pl-ar-db5 (pl-mk-db))
+
+(pl-solve-once!
+  pl-ar-db5
+  (pl-ar-goal "assert((nat(0) :- true))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-ar-db5
+  (pl-ar-goal "assertz((nat(s(X)) :- nat(X)))" {})
+  (pl-mk-trail))
+
+(pl-ar-test!
+  "recursive rule: nat(0) succeeds"
+  (pl-solve-once! pl-ar-db5 (pl-ar-goal "nat(0)" {}) (pl-mk-trail))
+  true)
+
+(pl-ar-test!
+  "recursive rule: nat(s(0)) succeeds"
+  (pl-solve-once!
+    pl-ar-db5
+    (pl-ar-goal "nat(s(0))" {})
+    (pl-mk-trail))
+  true)
+
+(pl-ar-test!
+  "recursive rule: nat(s(s(0))) succeeds"
+  (pl-solve-once!
+    pl-ar-db5
+    (pl-ar-goal "nat(s(s(0)))" {})
+    (pl-mk-trail))
+  true)
+
+(pl-ar-test!
+  "recursive rule: nat(bad) fails"
+  (pl-solve-once! pl-ar-db5 (pl-ar-goal "nat(bad)" {}) (pl-mk-trail))
+  false)
+
+;; ── DB6: rule with true body (explicit) ────────────────────────────
+(define pl-ar-db6 (pl-mk-db))
+
+(pl-solve-once!
+  pl-ar-db6
+  (pl-ar-goal "assertz((always(X) :- true))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-ar-db6
+  (pl-ar-goal "assert(always(extra))" {})
+  (pl-mk-trail))
+
+(pl-ar-test!
+  "rule body=true: always(foo) succeeds"
+  (pl-solve-once!
+    pl-ar-db6
+    (pl-ar-goal "always(foo)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-ar-test!
+  "rule body=true: always/1 has 2 clauses (1 rule + 1 fact)"
+  (pl-solve-count!
+    pl-ar-db6
+    (pl-ar-goal "always(X)" {})
+    (pl-mk-trail))
+  2)
+
+;; ── Runner ──────────────────────────────────────────────────────────
+(define pl-assert-rules-tests-run! (fn () {:failed pl-ar-test-fail :passed pl-ar-test-pass :total pl-ar-test-count :failures pl-ar-test-failures}))

lib/prolog/tests/atoms.sx

@@ -0,0 +1,305 @@
+;; lib/prolog/tests/atoms.sx — type predicates + string/atom built-ins
+
+(define pl-at-test-count 0)
+(define pl-at-test-pass 0)
+(define pl-at-test-fail 0)
+(define pl-at-test-failures (list))
+
+(define
+  pl-at-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-at-test-count (+ pl-at-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-at-test-pass (+ pl-at-test-pass 1))
+        (begin
+          (set! pl-at-test-fail (+ pl-at-test-fail 1))
+          (append!
+            pl-at-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-at-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-at-db (pl-mk-db))
+
+;; ── var/1 + nonvar/1 ──
+
+(pl-at-test!
+  "var(X) for unbound var"
+  (pl-solve-once! pl-at-db (pl-at-goal "var(X)" {}) (pl-mk-trail))
+  true)
+(pl-at-test!
+  "var(foo) fails"
+  (pl-solve-once! pl-at-db (pl-at-goal "var(foo)" {}) (pl-mk-trail))
+  false)
+(pl-at-test!
+  "nonvar(foo) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "nonvar(foo)" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "nonvar(X) for unbound var fails"
+  (pl-solve-once! pl-at-db (pl-at-goal "nonvar(X)" {}) (pl-mk-trail))
+  false)
+
+;; ── atom/1 ──
+
+(pl-at-test!
+  "atom(foo) succeeds"
+  (pl-solve-once! pl-at-db (pl-at-goal "atom(foo)" {}) (pl-mk-trail))
+  true)
+(pl-at-test!
+  "atom([]) succeeds"
+  (pl-solve-once! pl-at-db (pl-at-goal "atom([])" {}) (pl-mk-trail))
+  true)
+(pl-at-test!
+  "atom(42) fails"
+  (pl-solve-once! pl-at-db (pl-at-goal "atom(42)" {}) (pl-mk-trail))
+  false)
+(pl-at-test!
+  "atom(f(x)) fails"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "atom(f(x))" {})
+    (pl-mk-trail))
+  false)
+
+;; ── number/1 + integer/1 ──
+
+(pl-at-test!
+  "number(42) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "number(42)" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "number(foo) fails"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "number(foo)" {})
+    (pl-mk-trail))
+  false)
+(pl-at-test!
+  "integer(7) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "integer(7)" {})
+    (pl-mk-trail))
+  true)
+
+;; ── compound/1 + callable/1 + atomic/1 ──
+
+(pl-at-test!
+  "compound(f(x)) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "compound(f(x))" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "compound(foo) fails"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "compound(foo)" {})
+    (pl-mk-trail))
+  false)
+(pl-at-test!
+  "callable(foo) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "callable(foo)" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "callable(f(x)) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "callable(f(x))" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "callable(42) fails"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "callable(42)" {})
+    (pl-mk-trail))
+  false)
+(pl-at-test!
+  "atomic(foo) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "atomic(foo)" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "atomic(42) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "atomic(42)" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "atomic(f(x)) fails"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "atomic(f(x))" {})
+    (pl-mk-trail))
+  false)
+
+;; ── is_list/1 ──
+
+(pl-at-test!
+  "is_list([]) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "is_list([])" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "is_list([1,2,3]) succeeds"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "is_list([1,2,3])" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "is_list(foo) fails"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "is_list(foo)" {})
+    (pl-mk-trail))
+  false)
+
+;; ── atom_length/2 ──
+
+(define pl-at-env-al {})
+(pl-solve-once!
+  pl-at-db
+  (pl-at-goal "atom_length(hello, N)" pl-at-env-al)
+  (pl-mk-trail))
+(pl-at-test!
+  "atom_length(hello, N) -> N=5"
+  (pl-num-val (pl-walk-deep (dict-get pl-at-env-al "N")))
+  5)
+(pl-at-test!
+  "atom_length empty atom"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "atom_length('', 0)" {})
+    (pl-mk-trail))
+  true)
+
+;; ── atom_concat/3 ──
+
+(define pl-at-env-ac {})
+(pl-solve-once!
+  pl-at-db
+  (pl-at-goal "atom_concat(foo, bar, X)" pl-at-env-ac)
+  (pl-mk-trail))
+(pl-at-test!
+  "atom_concat(foo, bar, X) -> X=foobar"
+  (pl-atom-name (pl-walk-deep (dict-get pl-at-env-ac "X")))
+  "foobar")
+
+(pl-at-test!
+  "atom_concat(foo, bar, foobar) check"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "atom_concat(foo, bar, foobar)" {})
+    (pl-mk-trail))
+  true)
+(pl-at-test!
+  "atom_concat(foo, bar, foobaz) fails"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "atom_concat(foo, bar, foobaz)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-at-env-ac2 {})
+(pl-solve-once!
+  pl-at-db
+  (pl-at-goal "atom_concat(foo, Y, foobar)" pl-at-env-ac2)
+  (pl-mk-trail))
+(pl-at-test!
+  "atom_concat(foo, Y, foobar) -> Y=bar"
+  (pl-atom-name (pl-walk-deep (dict-get pl-at-env-ac2 "Y")))
+  "bar")
+
+;; ── atom_chars/2 ──
+
+(define pl-at-env-ach {})
+(pl-solve-once!
+  pl-at-db
+  (pl-at-goal "atom_chars(cat, Cs)" pl-at-env-ach)
+  (pl-mk-trail))
+(pl-at-test!
+  "atom_chars(cat, Cs) -> Cs=[c,a,t]"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "atom_chars(cat, [c,a,t])" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-at-env-ach2 {})
+(pl-solve-once!
+  pl-at-db
+  (pl-at-goal "atom_chars(A, [h,i])" pl-at-env-ach2)
+  (pl-mk-trail))
+(pl-at-test!
+  "atom_chars(A, [h,i]) -> A=hi"
+  (pl-atom-name (pl-walk-deep (dict-get pl-at-env-ach2 "A")))
+  "hi")
+
+;; ── char_code/2 ──
+
+(define pl-at-env-cc {})
+(pl-solve-once!
+  pl-at-db
+  (pl-at-goal "char_code(a, N)" pl-at-env-cc)
+  (pl-mk-trail))
+(pl-at-test!
+  "char_code(a, N) -> N=97"
+  (pl-num-val (pl-walk-deep (dict-get pl-at-env-cc "N")))
+  97)
+
+(define pl-at-env-cc2 {})
+(pl-solve-once!
+  pl-at-db
+  (pl-at-goal "char_code(C, 65)" pl-at-env-cc2)
+  (pl-mk-trail))
+(pl-at-test!
+  "char_code(C, 65) -> C='A'"
+  (pl-atom-name (pl-walk-deep (dict-get pl-at-env-cc2 "C")))
+  "A")
+
+;; ── number_codes/2 ──
+
+(pl-at-test!
+  "number_codes(42, [52,50])"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "number_codes(42, [52,50])" {})
+    (pl-mk-trail))
+  true)
+
+;; ── number_chars/2 ──
+
+(pl-at-test!
+  "number_chars(42, ['4','2'])"
+  (pl-solve-once!
+    pl-at-db
+    (pl-at-goal "number_chars(42, ['4','2'])" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-atom-tests-run! (fn () {:failed pl-at-test-fail :passed pl-at-test-pass :total pl-at-test-count :failures pl-at-test-failures}))

lib/prolog/tests/char_predicates.sx

@@ -0,0 +1,290 @@
+;; lib/prolog/tests/char_predicates.sx — char_type/2, upcase_atom/2, downcase_atom/2,
+;;   string_upper/2, string_lower/2
+
+(define pl-cp-test-count 0)
+(define pl-cp-test-pass 0)
+(define pl-cp-test-fail 0)
+(define pl-cp-test-failures (list))
+
+(define
+  pl-cp-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-cp-test-count (+ pl-cp-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-cp-test-pass (+ pl-cp-test-pass 1))
+        (begin
+          (set! pl-cp-test-fail (+ pl-cp-test-fail 1))
+          (append!
+            pl-cp-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-cp-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-cp-db (pl-mk-db))
+
+;; ─── char_type/2 — alpha ──────────────────────────────────────────
+
+(pl-cp-test!
+  "char_type(a, alpha) succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type(a, alpha)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "char_type('1', alpha) fails"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type('1', alpha)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-cp-test!
+  "char_type('A', alpha) succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type('A', alpha)" {})
+    (pl-mk-trail))
+  true)
+
+;; ─── char_type/2 — alnum ─────────────────────────────────────────
+
+(pl-cp-test!
+  "char_type('5', alnum) succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type('5', alnum)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "char_type(a, alnum) succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type(a, alnum)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "char_type(' ', alnum) fails"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type(' ', alnum)" {})
+    (pl-mk-trail))
+  false)
+
+;; ─── char_type/2 — digit ─────────────────────────────────────────
+
+(pl-cp-test!
+  "char_type('5', digit) succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type('5', digit)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "char_type(a, digit) fails"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type(a, digit)" {})
+    (pl-mk-trail))
+  false)
+
+;; ─── char_type/2 — digit(Weight) ─────────────────────────────────
+
+(define pl-cp-env-dw {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "char_type('5', digit(N))" pl-cp-env-dw)
+  (pl-mk-trail))
+(pl-cp-test!
+  "char_type('5', digit(N)) -> N=5"
+  (pl-num-val (pl-walk-deep (dict-get pl-cp-env-dw "N")))
+  5)
+
+(define pl-cp-env-dw0 {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "char_type('0', digit(N))" pl-cp-env-dw0)
+  (pl-mk-trail))
+(pl-cp-test!
+  "char_type('0', digit(N)) -> N=0"
+  (pl-num-val (pl-walk-deep (dict-get pl-cp-env-dw0 "N")))
+  0)
+
+;; ─── char_type/2 — space/white ───────────────────────────────────
+
+(pl-cp-test!
+  "char_type(' ', space) succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type(' ', space)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "char_type(a, space) fails"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type(a, space)" {})
+    (pl-mk-trail))
+  false)
+
+;; ─── char_type/2 — upper(Lower) ──────────────────────────────────
+
+(define pl-cp-env-ul {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "char_type('A', upper(L))" pl-cp-env-ul)
+  (pl-mk-trail))
+(pl-cp-test!
+  "char_type('A', upper(L)) -> L=a"
+  (pl-atom-name (pl-walk-deep (dict-get pl-cp-env-ul "L")))
+  "a")
+
+(pl-cp-test!
+  "char_type(a, upper(L)) fails — not uppercase"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type(a, upper(_))" {})
+    (pl-mk-trail))
+  false)
+
+;; ─── char_type/2 — lower(Upper) ──────────────────────────────────
+
+(define pl-cp-env-lu {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "char_type(a, lower(U))" pl-cp-env-lu)
+  (pl-mk-trail))
+(pl-cp-test!
+  "char_type(a, lower(U)) -> U='A'"
+  (pl-atom-name (pl-walk-deep (dict-get pl-cp-env-lu "U")))
+  "A")
+
+;; ─── char_type/2 — ascii(Code) ───────────────────────────────────
+
+(define pl-cp-env-as {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "char_type(a, ascii(C))" pl-cp-env-as)
+  (pl-mk-trail))
+(pl-cp-test!
+  "char_type(a, ascii(C)) -> C=97"
+  (pl-num-val (pl-walk-deep (dict-get pl-cp-env-as "C")))
+  97)
+
+;; ─── char_type/2 — punct ─────────────────────────────────────────
+
+(pl-cp-test!
+  "char_type('.', punct) succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type('.', punct)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "char_type(a, punct) fails"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "char_type(a, punct)" {})
+    (pl-mk-trail))
+  false)
+
+;; ─── upcase_atom/2 ───────────────────────────────────────────────
+
+(define pl-cp-env-ua {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "upcase_atom(hello, X)" pl-cp-env-ua)
+  (pl-mk-trail))
+(pl-cp-test!
+  "upcase_atom(hello, X) -> X='HELLO'"
+  (pl-atom-name (pl-walk-deep (dict-get pl-cp-env-ua "X")))
+  "HELLO")
+
+(pl-cp-test!
+  "upcase_atom(hello, 'HELLO') succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "upcase_atom(hello, 'HELLO')" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "upcase_atom('Hello World', 'HELLO WORLD') succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "upcase_atom('Hello World', 'HELLO WORLD')" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "upcase_atom('', '') succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "upcase_atom('', '')" {})
+    (pl-mk-trail))
+  true)
+
+;; ─── downcase_atom/2 ─────────────────────────────────────────────
+
+(define pl-cp-env-da {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "downcase_atom('HELLO', X)" pl-cp-env-da)
+  (pl-mk-trail))
+(pl-cp-test!
+  "downcase_atom('HELLO', X) -> X=hello"
+  (pl-atom-name (pl-walk-deep (dict-get pl-cp-env-da "X")))
+  "hello")
+
+(pl-cp-test!
+  "downcase_atom('HELLO', hello) succeeds"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "downcase_atom('HELLO', hello)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-cp-test!
+  "downcase_atom(hello, hello) succeeds — already lowercase"
+  (pl-solve-once!
+    pl-cp-db
+    (pl-cp-goal "downcase_atom(hello, hello)" {})
+    (pl-mk-trail))
+  true)
+
+;; ─── string_upper/2 + string_lower/2 (aliases) ───────────────────
+
+(define pl-cp-env-su {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "string_upper(hello, X)" pl-cp-env-su)
+  (pl-mk-trail))
+(pl-cp-test!
+  "string_upper(hello, X) -> X='HELLO'"
+  (pl-atom-name (pl-walk-deep (dict-get pl-cp-env-su "X")))
+  "HELLO")
+
+(define pl-cp-env-sl {})
+(pl-solve-once!
+  pl-cp-db
+  (pl-cp-goal "string_lower('WORLD', X)" pl-cp-env-sl)
+  (pl-mk-trail))
+(pl-cp-test!
+  "string_lower('WORLD', X) -> X=world"
+  (pl-atom-name (pl-walk-deep (dict-get pl-cp-env-sl "X")))
+  "world")
+
+(define pl-char-predicates-tests-run! (fn () {:failed pl-cp-test-fail :passed pl-cp-test-pass :total pl-cp-test-count :failures pl-cp-test-failures}))

lib/prolog/tests/clausedb.sx

@@ -0,0 +1,99 @@
+;; lib/prolog/tests/clausedb.sx — Clause DB unit tests
+
+(define pl-db-test-count 0)
+(define pl-db-test-pass 0)
+(define pl-db-test-fail 0)
+(define pl-db-test-failures (list))
+
+(define
+  pl-db-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-db-test-count (+ pl-db-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-db-test-pass (+ pl-db-test-pass 1))
+        (begin
+          (set! pl-db-test-fail (+ pl-db-test-fail 1))
+          (append!
+            pl-db-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(pl-db-test!
+  "head-key atom arity 0"
+  (pl-head-key (nth (first (pl-parse "foo.")) 1))
+  "foo/0")
+
+(pl-db-test!
+  "head-key compound arity 2"
+  (pl-head-key (nth (first (pl-parse "bar(a, b).")) 1))
+  "bar/2")
+
+(pl-db-test!
+  "clause-key of :- clause"
+  (pl-clause-key (first (pl-parse "likes(mary, X) :- friendly(X).")))
+  "likes/2")
+
+(pl-db-test!
+  "empty db lookup returns empty list"
+  (len (pl-db-lookup (pl-mk-db) "parent/2"))
+  0)
+
+(define pl-db-t1 (pl-mk-db))
+(pl-db-load! pl-db-t1 (pl-parse "foo(a). foo(b). foo(c)."))
+
+(pl-db-test!
+  "three facts same functor"
+  (len (pl-db-lookup pl-db-t1 "foo/1"))
+  3)
+(pl-db-test!
+  "mismatching key returns empty"
+  (len (pl-db-lookup pl-db-t1 "foo/2"))
+  0)
+
+(pl-db-test!
+  "first clause has arg a"
+  (pl-atom-name
+    (first (pl-args (nth (first (pl-db-lookup pl-db-t1 "foo/1")) 1))))
+  "a")
+
+(pl-db-test!
+  "third clause has arg c"
+  (pl-atom-name
+    (first (pl-args (nth (nth (pl-db-lookup pl-db-t1 "foo/1") 2) 1))))
+  "c")
+
+(define pl-db-t2 (pl-mk-db))
+(pl-db-load! pl-db-t2 (pl-parse "foo. bar. foo. parent(a, b). parent(c, d)."))
+
+(pl-db-test!
+  "atom heads keyed as foo/0"
+  (len (pl-db-lookup pl-db-t2 "foo/0"))
+  2)
+(pl-db-test!
+  "atom heads keyed as bar/0"
+  (len (pl-db-lookup pl-db-t2 "bar/0"))
+  1)
+(pl-db-test!
+  "compound heads keyed as parent/2"
+  (len (pl-db-lookup pl-db-t2 "parent/2"))
+  2)
+
+(pl-db-test!
+  "lookup-goal extracts functor/arity"
+  (len
+    (pl-db-lookup-goal pl-db-t2 (nth (first (pl-parse "parent(X, Y).")) 1)))
+  2)
+
+(pl-db-test!
+  "lookup-goal on atom goal"
+  (len (pl-db-lookup-goal pl-db-t2 (nth (first (pl-parse "foo.")) 1)))
+  2)
+
+(pl-db-test!
+  "stored clause is clause form"
+  (first (first (pl-db-lookup pl-db-t2 "parent/2")))
+  "clause")
+
+(define pl-clausedb-tests-run! (fn () {:failed pl-db-test-fail :passed pl-db-test-pass :total pl-db-test-count :failures pl-db-test-failures}))

lib/prolog/tests/compiler.sx

@@ -0,0 +1,185 @@
+;; lib/prolog/tests/compiler.sx — compiled clause dispatch tests
+
+(define pl-cmp-test-count 0)
+(define pl-cmp-test-pass 0)
+(define pl-cmp-test-fail 0)
+(define pl-cmp-test-failures (list))
+
+(define
+  pl-cmp-test!
+  (fn
+    (name got expected)
+    (set! pl-cmp-test-count (+ pl-cmp-test-count 1))
+    (if
+      (= got expected)
+      (set! pl-cmp-test-pass (+ pl-cmp-test-pass 1))
+      (begin
+        (set! pl-cmp-test-fail (+ pl-cmp-test-fail 1))
+        (append! pl-cmp-test-failures name)))))
+
+;; Load src, compile, return DB.
+(define
+  pl-cmp-mk
+  (fn
+    (src)
+    (let
+      ((db (pl-mk-db)))
+      (pl-db-load! db (pl-parse src))
+      (pl-compile-db! db)
+      db)))
+
+;; Run goal string against compiled DB; return bool (instantiates vars).
+(define
+  pl-cmp-once
+  (fn
+    (db src)
+    (pl-solve-once!
+      db
+      (pl-instantiate (pl-parse-goal src) {})
+      (pl-mk-trail))))
+
+;; Count solutions for goal string against compiled DB.
+(define
+  pl-cmp-count
+  (fn
+    (db src)
+    (pl-solve-count!
+      db
+      (pl-instantiate (pl-parse-goal src) {})
+      (pl-mk-trail))))
+
+;; ── 1. Simple facts ──────────────────────────────────────────────
+
+(define pl-cmp-db1 (pl-cmp-mk "color(red). color(green). color(blue)."))
+
+(pl-cmp-test! "compiled fact hit" (pl-cmp-once pl-cmp-db1 "color(red)") true)
+(pl-cmp-test!
+  "compiled fact miss"
+  (pl-cmp-once pl-cmp-db1 "color(yellow)")
+  false)
+(pl-cmp-test! "compiled fact count" (pl-cmp-count pl-cmp-db1 "color(X)") 3)
+
+;; ── 2. Recursive rule: append ────────────────────────────────────
+
+(define
+  pl-cmp-db2
+  (pl-cmp-mk "append([], L, L). append([H|T], L, [H|R]) :- append(T, L, R)."))
+
+(pl-cmp-test!
+  "compiled append build"
+  (pl-cmp-once pl-cmp-db2 "append([1,2],[3],[1,2,3])")
+  true)
+(pl-cmp-test!
+  "compiled append fail"
+  (pl-cmp-once pl-cmp-db2 "append([1,2],[3],[1,2])")
+  false)
+(pl-cmp-test!
+  "compiled append split count"
+  (pl-cmp-count pl-cmp-db2 "append(X, Y, [a,b])")
+  3)
+
+;; ── 3. Cut ───────────────────────────────────────────────────────
+
+(define
+  pl-cmp-db3
+  (pl-cmp-mk "first(X, [X|_]) :- !. first(X, [_|T]) :- first(X, T)."))
+
+(pl-cmp-test!
+  "compiled cut: only one solution"
+  (pl-cmp-count pl-cmp-db3 "first(X, [a,b,c])")
+  1)
+
+(let
+  ((db pl-cmp-db3) (trail (pl-mk-trail)) (env {}))
+  (let
+    ((x (pl-mk-rt-var "X")))
+    (dict-set! env "X" x)
+    (pl-solve-once!
+      db
+      (pl-instantiate (pl-parse-goal "first(X, [a,b,c])") env)
+      trail)
+    (pl-cmp-test!
+      "compiled cut: correct binding"
+      (pl-atom-name (pl-walk x))
+      "a")))
+
+;; ── 4. member ────────────────────────────────────────────────────
+
+(define
+  pl-cmp-db4
+  (pl-cmp-mk "member(X, [X|_]). member(X, [_|T]) :- member(X, T)."))
+
+(pl-cmp-test!
+  "compiled member hit"
+  (pl-cmp-once pl-cmp-db4 "member(b, [a,b,c])")
+  true)
+(pl-cmp-test!
+  "compiled member miss"
+  (pl-cmp-once pl-cmp-db4 "member(d, [a,b,c])")
+  false)
+(pl-cmp-test!
+  "compiled member count"
+  (pl-cmp-count pl-cmp-db4 "member(X, [a,b,c])")
+  3)
+
+;; ── 5. Arithmetic in body ────────────────────────────────────────
+
+(define pl-cmp-db5 (pl-cmp-mk "double(X, Y) :- Y is X * 2."))
+
+(let
+  ((db pl-cmp-db5) (trail (pl-mk-trail)) (env {}))
+  (let
+    ((y (pl-mk-rt-var "Y")))
+    (dict-set! env "Y" y)
+    (pl-solve-once!
+      db
+      (pl-instantiate (pl-parse-goal "double(5, Y)") env)
+      trail)
+    (pl-cmp-test! "compiled arithmetic in body" (pl-num-val (pl-walk y)) 10)))
+
+;; ── 6. Transitive ancestor ───────────────────────────────────────
+
+(define
+  pl-cmp-db6
+  (pl-cmp-mk
+    (str
+      "parent(a,b). parent(b,c). parent(c,d)."
+      "ancestor(X,Y) :- parent(X,Y)."
+      "ancestor(X,Y) :- parent(X,Z), ancestor(Z,Y).")))
+
+(pl-cmp-test!
+  "compiled ancestor direct"
+  (pl-cmp-once pl-cmp-db6 "ancestor(a,b)")
+  true)
+(pl-cmp-test!
+  "compiled ancestor 3-step"
+  (pl-cmp-once pl-cmp-db6 "ancestor(a,d)")
+  true)
+(pl-cmp-test!
+  "compiled ancestor fail"
+  (pl-cmp-once pl-cmp-db6 "ancestor(d,a)")
+  false)
+
+;; ── 7. Fallback: uncompiled predicate calls compiled sub-predicate
+
+(define
+  pl-cmp-db7
+  (let
+    ((db (pl-mk-db)))
+    (pl-db-load! db (pl-parse "q(1). q(2)."))
+    (pl-compile-db! db)
+    (pl-db-load! db (pl-parse "r(X) :- q(X)."))
+    db))
+
+(pl-cmp-test!
+  "uncompiled predicate resolves"
+  (pl-cmp-once pl-cmp-db7 "r(1)")
+  true)
+(pl-cmp-test!
+  "uncompiled calls compiled sub-pred count"
+  (pl-cmp-count pl-cmp-db7 "r(X)")
+  2)
+
+;; ── Runner ───────────────────────────────────────────────────────
+
+(define pl-compiler-tests-run! (fn () {:failed pl-cmp-test-fail :passed pl-cmp-test-pass :total pl-cmp-test-count :failures pl-cmp-test-failures}))

lib/prolog/tests/cross_validate.sx

@@ -0,0 +1,86 @@
+;; lib/prolog/tests/cross_validate.sx
+;; Verifies that the compiled solver produces the same solution counts as the
+;; interpreter for each classic program + built-in exercise.
+;; Interpreter is the reference: if they disagree, the compiler is wrong.
+
+(define pl-xv-test-count 0)
+(define pl-xv-test-pass 0)
+(define pl-xv-test-fail 0)
+(define pl-xv-test-failures (list))
+
+(define
+  pl-xv-test!
+  (fn
+    (name got expected)
+    (set! pl-xv-test-count (+ pl-xv-test-count 1))
+    (if
+      (= got expected)
+      (set! pl-xv-test-pass (+ pl-xv-test-pass 1))
+      (begin
+        (set! pl-xv-test-fail (+ pl-xv-test-fail 1))
+        (append! pl-xv-test-failures name)))))
+
+;; Shorthand: assert compiled result matches interpreter.
+(define
+  pl-xv-match!
+  (fn
+    (name src goal)
+    (pl-xv-test! name (pl-compiled-matches-interp? src goal) true)))
+
+;; ── 1. append/3 ─────────────────────────────────────────────────
+
+(define
+  pl-xv-append
+  "append([], L, L). append([H|T], L, [H|R]) :- append(T, L, R).")
+
+(pl-xv-match! "append build 2+2" pl-xv-append "append([1,2],[3,4],X)")
+(pl-xv-match! "append split [a,b,c]" pl-xv-append "append(X, Y, [a,b,c])")
+(pl-xv-match! "append member-mode" pl-xv-append "append(_, [3], [1,2,3])")
+
+;; ── 2. member/2 ─────────────────────────────────────────────────
+
+(define pl-xv-member "member(X, [X|_]). member(X, [_|T]) :- member(X, T).")
+
+(pl-xv-match! "member check hit" pl-xv-member "member(b, [a,b,c])")
+(pl-xv-match! "member count" pl-xv-member "member(X, [a,b,c])")
+(pl-xv-match! "member empty" pl-xv-member "member(X, [])")
+
+;; ── 3. facts + transitive rules ─────────────────────────────────
+
+(define
+  pl-xv-ancestor
+  (str
+    "parent(a,b). parent(b,c). parent(c,d). parent(a,c)."
+    "ancestor(X,Y) :- parent(X,Y)."
+    "ancestor(X,Y) :- parent(X,Z), ancestor(Z,Y)."))
+
+(pl-xv-match! "ancestor direct" pl-xv-ancestor "ancestor(a,b)")
+(pl-xv-match! "ancestor transitive" pl-xv-ancestor "ancestor(a,d)")
+(pl-xv-match! "ancestor all from a" pl-xv-ancestor "ancestor(a,Y)")
+
+;; ── 4. cut semantics ────────────────────────────────────────────
+
+(define pl-xv-cut "first(X,[X|_]) :- !. first(X,[_|T]) :- first(X,T).")
+
+(pl-xv-match! "cut one solution" pl-xv-cut "first(X,[a,b,c])")
+(pl-xv-match! "cut empty list" pl-xv-cut "first(X,[])")
+
+;; ── 5. arithmetic ───────────────────────────────────────────────
+
+(define pl-xv-arith "sq(X,Y) :- Y is X * X. even(X) :- 0 is X mod 2.")
+
+(pl-xv-match! "sq(3,Y) count" pl-xv-arith "sq(3,Y)")
+(pl-xv-match! "sq(3,9) check" pl-xv-arith "sq(3,9)")
+(pl-xv-match! "even(4) check" pl-xv-arith "even(4)")
+(pl-xv-match! "even(3) check" pl-xv-arith "even(3)")
+
+;; ── 6. if-then-else ─────────────────────────────────────────────
+
+(define pl-xv-ite "classify(X, pos) :- X > 0, !. classify(_, nonpos).")
+
+(pl-xv-match! "classify positive" pl-xv-ite "classify(5, C)")
+(pl-xv-match! "classify zero" pl-xv-ite "classify(0, C)")
+
+;; ── Runner ───────────────────────────────────────────────────────
+
+(define pl-cross-validate-tests-run! (fn () {:failed pl-xv-test-fail :passed pl-xv-test-pass :total pl-xv-test-count :failures pl-xv-test-failures}))

lib/prolog/tests/dynamic.sx

@@ -0,0 +1,158 @@
+;; lib/prolog/tests/dynamic.sx — assert/asserta/assertz/retract.
+
+(define pl-dy-test-count 0)
+(define pl-dy-test-pass 0)
+(define pl-dy-test-fail 0)
+(define pl-dy-test-failures (list))
+
+(define
+  pl-dy-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-dy-test-count (+ pl-dy-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-dy-test-pass (+ pl-dy-test-pass 1))
+        (begin
+          (set! pl-dy-test-fail (+ pl-dy-test-fail 1))
+          (append!
+            pl-dy-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-dy-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+;; assertz then query
+(define pl-dy-db1 (pl-mk-db))
+(pl-solve-once!
+  pl-dy-db1
+  (pl-dy-goal "assertz(foo(1))" {})
+  (pl-mk-trail))
+(pl-dy-test!
+  "assertz(foo(1)) + foo(1)"
+  (pl-solve-once! pl-dy-db1 (pl-dy-goal "foo(1)" {}) (pl-mk-trail))
+  true)
+
+(pl-dy-test!
+  "after one assertz, foo/1 has 1 clause"
+  (pl-solve-count! pl-dy-db1 (pl-dy-goal "foo(X)" {}) (pl-mk-trail))
+  1)
+
+;; assertz appends — order preserved
+(define pl-dy-db2 (pl-mk-db))
+(pl-solve-once!
+  pl-dy-db2
+  (pl-dy-goal "assertz(p(1))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-dy-db2
+  (pl-dy-goal "assertz(p(2))" {})
+  (pl-mk-trail))
+(pl-dy-test!
+  "assertz twice — count 2"
+  (pl-solve-count! pl-dy-db2 (pl-dy-goal "p(X)" {}) (pl-mk-trail))
+  2)
+
+(define pl-dy-env-a {})
+(pl-solve-once! pl-dy-db2 (pl-dy-goal "p(X)" pl-dy-env-a) (pl-mk-trail))
+(pl-dy-test!
+  "assertz: first solution is the first asserted (1)"
+  (pl-num-val (pl-walk-deep (dict-get pl-dy-env-a "X")))
+  1)
+
+;; asserta prepends
+(define pl-dy-db3 (pl-mk-db))
+(pl-solve-once!
+  pl-dy-db3
+  (pl-dy-goal "assertz(p(1))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-dy-db3
+  (pl-dy-goal "asserta(p(99))" {})
+  (pl-mk-trail))
+(define pl-dy-env-b {})
+(pl-solve-once! pl-dy-db3 (pl-dy-goal "p(X)" pl-dy-env-b) (pl-mk-trail))
+(pl-dy-test!
+  "asserta: prepended clause is first solution"
+  (pl-num-val (pl-walk-deep (dict-get pl-dy-env-b "X")))
+  99)
+
+;; assert/1 = assertz/1
+(define pl-dy-db4 (pl-mk-db))
+(pl-solve-once!
+  pl-dy-db4
+  (pl-dy-goal "assert(g(7))" {})
+  (pl-mk-trail))
+(pl-dy-test!
+  "assert/1 alias"
+  (pl-solve-once! pl-dy-db4 (pl-dy-goal "g(7)" {}) (pl-mk-trail))
+  true)
+
+;; retract removes a fact
+(define pl-dy-db5 (pl-mk-db))
+(pl-solve-once!
+  pl-dy-db5
+  (pl-dy-goal "assertz(q(1))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-dy-db5
+  (pl-dy-goal "assertz(q(2))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-dy-db5
+  (pl-dy-goal "assertz(q(3))" {})
+  (pl-mk-trail))
+(pl-dy-test!
+  "before retract: 3 clauses"
+  (pl-solve-count! pl-dy-db5 (pl-dy-goal "q(X)" {}) (pl-mk-trail))
+  3)
+(pl-solve-once!
+  pl-dy-db5
+  (pl-dy-goal "retract(q(2))" {})
+  (pl-mk-trail))
+(pl-dy-test!
+  "after retract(q(2)): 2 clauses left"
+  (pl-solve-count! pl-dy-db5 (pl-dy-goal "q(X)" {}) (pl-mk-trail))
+  2)
+
+(define pl-dy-env-c {})
+(pl-solve-once! pl-dy-db5 (pl-dy-goal "q(X)" pl-dy-env-c) (pl-mk-trail))
+(pl-dy-test!
+  "after retract(q(2)): first remaining is 1"
+  (pl-num-val (pl-walk-deep (dict-get pl-dy-env-c "X")))
+  1)
+
+;; retract of non-existent
+(pl-dy-test!
+  "retract(missing(0)) on empty db fails"
+  (pl-solve-once!
+    (pl-mk-db)
+    (pl-dy-goal "retract(missing(0))" {})
+    (pl-mk-trail))
+  false)
+
+;; retract with unbound var matches first
+(define pl-dy-db6 (pl-mk-db))
+(pl-solve-once!
+  pl-dy-db6
+  (pl-dy-goal "assertz(r(11))" {})
+  (pl-mk-trail))
+(pl-solve-once!
+  pl-dy-db6
+  (pl-dy-goal "assertz(r(22))" {})
+  (pl-mk-trail))
+(define pl-dy-env-d {})
+(pl-solve-once!
+  pl-dy-db6
+  (pl-dy-goal "retract(r(X))" pl-dy-env-d)
+  (pl-mk-trail))
+(pl-dy-test!
+  "retract(r(X)) binds X to first match"
+  (pl-num-val (pl-walk-deep (dict-get pl-dy-env-d "X")))
+  11)
+
+(define pl-dynamic-tests-run! (fn () {:failed pl-dy-test-fail :passed pl-dy-test-pass :total pl-dy-test-count :failures pl-dy-test-failures}))

lib/prolog/tests/findall.sx

@@ -0,0 +1,167 @@
+;; lib/prolog/tests/findall.sx — findall/3, bagof/3, setof/3.
+
+(define pl-fb-test-count 0)
+(define pl-fb-test-pass 0)
+(define pl-fb-test-fail 0)
+(define pl-fb-test-failures (list))
+
+(define
+  pl-fb-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-fb-test-count (+ pl-fb-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-fb-test-pass (+ pl-fb-test-pass 1))
+        (begin
+          (set! pl-fb-test-fail (+ pl-fb-test-fail 1))
+          (append!
+            pl-fb-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-fb-term-to-sx
+  (fn
+    (t)
+    (cond
+      ((pl-num? t) (pl-num-val t))
+      ((pl-atom? t) (pl-atom-name t))
+      (true (list :complex)))))
+
+(define
+  pl-fb-list-walked
+  (fn
+    (w)
+    (cond
+      ((and (pl-atom? w) (= (pl-atom-name w) "[]")) (list))
+      ((and (pl-compound? w) (= (pl-fun w) ".") (= (len (pl-args w)) 2))
+        (cons
+          (pl-fb-term-to-sx (first (pl-args w)))
+          (pl-fb-list-walked (nth (pl-args w) 1))))
+      (true (list :not-list)))))
+
+(define pl-fb-list-to-sx (fn (t) (pl-fb-list-walked (pl-walk-deep t))))
+
+(define
+  pl-fb-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-fb-prog-src "member(X, [X|_]). member(X, [_|T]) :- member(X, T).")
+
+(define pl-fb-db (pl-mk-db))
+(pl-db-load! pl-fb-db (pl-parse pl-fb-prog-src))
+
+;; ── findall ──
+
+(define pl-fb-env-1 {})
+(pl-solve-once!
+  pl-fb-db
+  (pl-fb-goal "findall(X, member(X, [a, b, c]), L)" pl-fb-env-1)
+  (pl-mk-trail))
+(pl-fb-test!
+  "findall member [a, b, c]"
+  (pl-fb-list-to-sx (dict-get pl-fb-env-1 "L"))
+  (list "a" "b" "c"))
+
+(define pl-fb-env-2 {})
+(pl-solve-once!
+  pl-fb-db
+  (pl-fb-goal "findall(X, (member(X, [1, 2, 3]), X >= 2), L)" pl-fb-env-2)
+  (pl-mk-trail))
+(pl-fb-test!
+  "findall with comparison filter"
+  (pl-fb-list-to-sx (dict-get pl-fb-env-2 "L"))
+  (list 2 3))
+
+(define pl-fb-env-3 {})
+(pl-solve-once!
+  pl-fb-db
+  (pl-fb-goal "findall(X, fail, L)" pl-fb-env-3)
+  (pl-mk-trail))
+(pl-fb-test!
+  "findall on fail succeeds with empty list"
+  (pl-fb-list-to-sx (dict-get pl-fb-env-3 "L"))
+  (list))
+
+(pl-fb-test!
+  "findall(X, fail, L) the goal succeeds"
+  (pl-solve-once!
+    pl-fb-db
+    (pl-fb-goal "findall(X, fail, L)" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-fb-env-4 {})
+(pl-solve-once!
+  pl-fb-db
+  (pl-fb-goal
+    "findall(p(X, Y), (member(X, [1, 2]), member(Y, [a, b])), L)"
+    pl-fb-env-4)
+  (pl-mk-trail))
+(pl-fb-test!
+  "findall over compound template — count = 4"
+  (len (pl-fb-list-to-sx (dict-get pl-fb-env-4 "L")))
+  4)
+
+;; ── bagof ──
+
+(pl-fb-test!
+  "bagof succeeds when results exist"
+  (pl-solve-once!
+    pl-fb-db
+    (pl-fb-goal "bagof(X, member(X, [1, 2, 3]), L)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-fb-test!
+  "bagof fails on empty"
+  (pl-solve-once!
+    pl-fb-db
+    (pl-fb-goal "bagof(X, fail, L)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-fb-env-5 {})
+(pl-solve-once!
+  pl-fb-db
+  (pl-fb-goal "bagof(X, member(X, [c, a, b]), L)" pl-fb-env-5)
+  (pl-mk-trail))
+(pl-fb-test!
+  "bagof preserves order"
+  (pl-fb-list-to-sx (dict-get pl-fb-env-5 "L"))
+  (list "c" "a" "b"))
+
+;; ── setof ──
+
+(define pl-fb-env-6 {})
+(pl-solve-once!
+  pl-fb-db
+  (pl-fb-goal "setof(X, member(X, [c, a, b, a, c]), L)" pl-fb-env-6)
+  (pl-mk-trail))
+(pl-fb-test!
+  "setof sorts + dedupes atoms"
+  (pl-fb-list-to-sx (dict-get pl-fb-env-6 "L"))
+  (list "a" "b" "c"))
+
+(pl-fb-test!
+  "setof fails on empty"
+  (pl-solve-once!
+    pl-fb-db
+    (pl-fb-goal "setof(X, fail, L)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-fb-env-7 {})
+(pl-solve-once!
+  pl-fb-db
+  (pl-fb-goal "setof(X, member(X, [3, 1, 2, 1, 3]), L)" pl-fb-env-7)
+  (pl-mk-trail))
+(pl-fb-test!
+  "setof sorts + dedupes nums"
+  (pl-fb-list-to-sx (dict-get pl-fb-env-7 "L"))
+  (list 1 2 3))
+
+(define pl-findall-tests-run! (fn () {:failed pl-fb-test-fail :passed pl-fb-test-pass :total pl-fb-test-count :failures pl-fb-test-failures}))

lib/prolog/tests/hs_bridge.sx

@@ -0,0 +1,165 @@
+;; lib/prolog/tests/hs_bridge.sx — tests for Prolog↔Hyperscript bridge
+;;
+;; Verifies pl-hs-query, pl-hs-predicate/N, and pl-hs-install.
+;; Also demonstrates the end-to-end DSL pattern:
+;;   (define allowed (pl-hs-predicate/2 db "allowed"))
+;;   → (allowed "alice" "edit") is what Hyperscript compiles
+;;     `when allowed(alice, edit)` to.
+
+(define pl-hsb-test-count 0)
+(define pl-hsb-test-pass 0)
+(define pl-hsb-test-fail 0)
+(define pl-hsb-test-failures (list))
+
+(define
+  pl-hsb-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-hsb-test-count (+ pl-hsb-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-hsb-test-pass (+ pl-hsb-test-pass 1))
+        (begin
+          (set! pl-hsb-test-fail (+ pl-hsb-test-fail 1))
+          (append!
+            pl-hsb-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+;; ── shared KB ──
+
+(define
+  pl-hsb-perm-src
+  "role(alice, admin). role(bob, editor). role(charlie, viewer). permission(admin, read). permission(admin, write). permission(admin, delete). permission(editor, read). permission(editor, write). permission(viewer, read). allowed(U, A) :- role(U, R), permission(R, A).")
+
+(define pl-hsb-db (pl-load pl-hsb-perm-src))
+
+;; ── pl-hs-query ──
+
+(pl-hsb-test!
+  "pl-hs-query: ground fact succeeds"
+  (pl-hs-query pl-hsb-db "role(alice, admin)")
+  true)
+
+(pl-hsb-test!
+  "pl-hs-query: absent fact fails"
+  (pl-hs-query pl-hsb-db "role(alice, viewer)")
+  false)
+
+(pl-hsb-test!
+  "pl-hs-query: rule derivation succeeds"
+  (pl-hs-query pl-hsb-db "allowed(alice, delete)")
+  true)
+
+(pl-hsb-test!
+  "pl-hs-query: rule derivation fails"
+  (pl-hs-query pl-hsb-db "allowed(charlie, delete)")
+  false)
+
+(pl-hsb-test!
+  "pl-hs-query: arithmetic goal"
+  (pl-hs-query pl-hsb-db "X is 3 + 4, X = 7")
+  true)
+
+;; ── pl-hs-predicate/2 ──
+
+(define pl-hsb-allowed (pl-hs-predicate/2 pl-hsb-db "allowed"))
+
+(pl-hsb-test!
+  "predicate/2: alice can read"
+  (pl-hsb-allowed "alice" "read")
+  true)
+
+(pl-hsb-test!
+  "predicate/2: alice can delete"
+  (pl-hsb-allowed "alice" "delete")
+  true)
+
+(pl-hsb-test!
+  "predicate/2: charlie cannot write"
+  (pl-hsb-allowed "charlie" "write")
+  false)
+
+(pl-hsb-test!
+  "predicate/2: bob can write"
+  (pl-hsb-allowed "bob" "write")
+  true)
+
+(pl-hsb-test!
+  "predicate/2: unknown user fails"
+  (pl-hsb-allowed "eve" "read")
+  false)
+
+;; ── DSL simulation ──
+;; Hyperscript compiles `when allowed(user, action) then …`
+;; to `(allowed user action)` — a direct SX function call.
+;; Here we verify that pattern works end-to-end.
+
+(define pl-hsb-user "alice")
+(define pl-hsb-action "write")
+
+(pl-hsb-test!
+  "DSL simulation: (allowed user action) true path"
+  (pl-hsb-allowed pl-hsb-user pl-hsb-action)
+  true)
+
+(define pl-hsb-user2 "charlie")
+
+(pl-hsb-test!
+  "DSL simulation: (allowed user action) false path"
+  (pl-hsb-allowed pl-hsb-user2 pl-hsb-action)
+  false)
+
+;; ── pl-hs-predicate/1 ──
+
+(define pl-hsb-viewer-src "color(red). color(green). color(blue).")
+(define pl-hsb-color-db (pl-load pl-hsb-viewer-src))
+(define pl-hsb-color? (pl-hs-predicate/1 pl-hsb-color-db "color"))
+
+(pl-hsb-test! "predicate/1: color(red) succeeds" (pl-hsb-color? "red") true)
+
+(pl-hsb-test!
+  "predicate/1: color(purple) fails"
+  (pl-hsb-color? "purple")
+  false)
+
+;; ── pl-hs-predicate/3 ──
+
+(define pl-hsb-3ary-src "between_vals(X, Lo, Hi) :- X >= Lo, X =< Hi.")
+(define pl-hsb-3ary-db (pl-load pl-hsb-3ary-src))
+(define pl-hsb-in-range? (pl-hs-predicate/3 pl-hsb-3ary-db "between_vals"))
+
+(pl-hsb-test!
+  "predicate/3: 5 in range [1,10]"
+  (pl-hsb-in-range? "5" "1" "10")
+  true)
+
+(pl-hsb-test!
+  "predicate/3: 15 not in range [1,10]"
+  (pl-hsb-in-range? "15" "1" "10")
+  false)
+
+;; ── pl-hs-install ──
+
+(define
+  pl-hsb-installed
+  (pl-hs-install
+    pl-hsb-db
+    (list (list "allowed" 2) (list "role" 2) (list "permission" 2))))
+
+(pl-hsb-test!
+  "pl-hs-install: returns dict with allowed key"
+  (not (nil? (dict-get pl-hsb-installed "allowed")))
+  true)
+
+(pl-hsb-test!
+  "pl-hs-install: installed allowed fn works"
+  ((dict-get pl-hsb-installed "allowed") "alice" "delete")
+  true)
+
+(pl-hsb-test!
+  "pl-hs-install: installed role fn works"
+  ((dict-get pl-hsb-installed "role") "bob" "editor")
+  true)
+
+(define pl-hs-bridge-tests-run! (fn () {:failed pl-hsb-test-fail :passed pl-hsb-test-pass :total pl-hsb-test-count :failures pl-hsb-test-failures}))

lib/prolog/tests/integration.sx

@@ -0,0 +1,172 @@
+;; lib/prolog/tests/integration.sx — end-to-end integration tests via pl-query-* API
+;;
+;; Tests the full source→parse→load→solve pipeline with real programs.
+;; Covers: permission system, graph reachability, quicksort, fibonacci, dynamic KB.
+
+(define pl-int-test-count 0)
+(define pl-int-test-pass 0)
+(define pl-int-test-fail 0)
+(define pl-int-test-failures (list))
+
+(define
+  pl-int-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-int-test-count (+ pl-int-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-int-test-pass (+ pl-int-test-pass 1))
+        (begin
+          (set! pl-int-test-fail (+ pl-int-test-fail 1))
+          (append!
+            pl-int-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+;; ── Permission system ──
+;; role/2 + permission/2 facts, allowed/2 rule
+
+(define
+  pl-int-perm-src
+  "role(alice, admin). role(bob, editor). role(charlie, viewer). permission(admin, read). permission(admin, write). permission(admin, delete). permission(editor, read). permission(editor, write). permission(viewer, read). allowed(U, A) :- role(U, R), permission(R, A).")
+
+(define pl-int-perm-db (pl-load pl-int-perm-src))
+
+(pl-int-test!
+  "alice can read"
+  (len (pl-query-all pl-int-perm-db "allowed(alice, read)"))
+  1)
+
+(pl-int-test!
+  "alice can delete"
+  (len (pl-query-all pl-int-perm-db "allowed(alice, delete)"))
+  1)
+
+(pl-int-test!
+  "charlie cannot write"
+  (len (pl-query-all pl-int-perm-db "allowed(charlie, write)"))
+  0)
+
+(pl-int-test!
+  "alice has 3 permissions"
+  (len (pl-query-all pl-int-perm-db "allowed(alice, A)"))
+  3)
+
+(pl-int-test!
+  "only one user can delete"
+  (len (pl-query-all pl-int-perm-db "allowed(U, delete)"))
+  1)
+
+(pl-int-test!
+  "the deleter is alice"
+  (dict-get (first (pl-query-all pl-int-perm-db "allowed(U, delete)")) "U")
+  "alice")
+
+;; ── Graph reachability ──
+;; Directed edges; path/2 transitive closure via two clauses
+
+(define
+  pl-int-graph-src
+  "edge(a, b). edge(b, c). edge(c, d). edge(b, d). path(X, Y) :- edge(X, Y). path(X, Y) :- edge(X, Z), path(Z, Y).")
+
+(define pl-int-graph-db (pl-load pl-int-graph-src))
+
+(pl-int-test!
+  "direct edge a→b is a path"
+  (len (pl-query-all pl-int-graph-db "path(a, b)"))
+  1)
+
+(pl-int-test!
+  "transitive path a→c"
+  (len (pl-query-all pl-int-graph-db "path(a, c)"))
+  1)
+
+(pl-int-test!
+  "no path d→a (no back-edges)"
+  (len (pl-query-all pl-int-graph-db "path(d, a)"))
+  0)
+
+(pl-int-test!
+  "4 derivations from a (b,c,d via two routes to d)"
+  (len (pl-query-all pl-int-graph-db "path(a, Y)"))
+  4)
+
+;; ── Quicksort ──
+;; Partition-and-recurse; uses its own append/3 to avoid DB pollution
+
+(define
+  pl-int-qs-src
+  "partition(_, [], [], []). partition(Piv, [H|T], [H|Less], Greater) :- H =< Piv, !, partition(Piv, T, Less, Greater). partition(Piv, [H|T], Less, [H|Greater]) :- partition(Piv, T, Less, Greater). append([], L, L). append([H|T], L, [H|R]) :- append(T, L, R). quicksort([], []). quicksort([H|T], Sorted) :- partition(H, T, Less, Greater), quicksort(Less, SL), quicksort(Greater, SG), append(SL, [H|SG], Sorted).")
+
+(define pl-int-qs-db (pl-load pl-int-qs-src))
+
+(pl-int-test!
+  "quicksort([]) = [] (ground check)"
+  (len (pl-query-all pl-int-qs-db "quicksort([], [])"))
+  1)
+
+(pl-int-test!
+  "quicksort([3,1,2]) = [1,2,3] (ground check)"
+  (len (pl-query-all pl-int-qs-db "quicksort([3,1,2], [1,2,3])"))
+  1)
+
+(pl-int-test!
+  "quicksort([5,3,1,4,2]) = [1,2,3,4,5] (ground check)"
+  (len (pl-query-all pl-int-qs-db "quicksort([5,3,1,4,2], [1,2,3,4,5])"))
+  1)
+
+(pl-int-test!
+  "quicksort([3,1,2], [3,1,2]) fails — unsorted order rejected"
+  (len (pl-query-all pl-int-qs-db "quicksort([3,1,2], [3,1,2])"))
+  0)
+
+;; ── Fibonacci ──
+;; Naive recursive; ground checks avoid list-format uncertainty
+
+(define
+  pl-int-fib-src
+  "fib(0, 0). fib(1, 1). fib(N, F) :- N > 1, N1 is N - 1, N2 is N - 2, fib(N1, F1), fib(N2, F2), F is F1 + F2.")
+
+(define pl-int-fib-db (pl-load pl-int-fib-src))
+
+(pl-int-test!
+  "fib(0, 0) succeeds"
+  (len (pl-query-all pl-int-fib-db "fib(0, 0)"))
+  1)
+
+(pl-int-test!
+  "fib(5, 5) succeeds"
+  (len (pl-query-all pl-int-fib-db "fib(5, 5)"))
+  1)
+
+(pl-int-test!
+  "fib(7, 13) succeeds"
+  (len (pl-query-all pl-int-fib-db "fib(7, 13)"))
+  1)
+
+;; ── Dynamic knowledge base ──
+;; Assert and retract facts; the DB dict is mutable so mutations persist
+
+(define pl-int-dyn-src "color(red). color(green). color(blue).")
+(define pl-int-dyn-db (pl-load pl-int-dyn-src))
+
+(pl-int-test!
+  "initial KB: 3 colors"
+  (len (pl-query-all pl-int-dyn-db "color(X)"))
+  3)
+
+(pl-int-test!
+  "after assert(color(yellow)): 4 colors"
+  (begin
+    (pl-query-all pl-int-dyn-db "assert(color(yellow))")
+    (len (pl-query-all pl-int-dyn-db "color(X)")))
+  4)
+
+(pl-int-test!
+  "after retract(color(red)): back to 3 colors"
+  (begin
+    (pl-query-all pl-int-dyn-db "retract(color(red))")
+    (len (pl-query-all pl-int-dyn-db "color(X)")))
+  3)
+
+(define pl-integration-tests-run! (fn () {:failed pl-int-test-fail :passed pl-int-test-pass :total pl-int-test-count :failures pl-int-test-failures}))

lib/prolog/tests/io_predicates.sx

@@ -0,0 +1,326 @@
+;; lib/prolog/tests/io_predicates.sx — term_to_atom/2, term_string/2,
+;;   with_output_to/2, writeln/1, format/1, format/2
+
+(define pl-io-test-count 0)
+(define pl-io-test-pass 0)
+(define pl-io-test-fail 0)
+(define pl-io-test-failures (list))
+
+(define
+  pl-io-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-io-test-count (+ pl-io-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-io-test-pass (+ pl-io-test-pass 1))
+        (begin
+          (set! pl-io-test-fail (+ pl-io-test-fail 1))
+          (append!
+            pl-io-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-io-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-io-db (pl-mk-db))
+
+;; helper: get output buffer after running a goal
+(define
+  pl-io-capture!
+  (fn
+    (goal)
+    (do
+      (pl-output-clear!)
+      (pl-solve-once! pl-io-db goal (pl-mk-trail))
+      pl-output-buffer)))
+
+;; ─── term_to_atom/2 — bound Term direction ─────────────────────────────────
+
+(pl-io-test!
+  "term_to_atom(foo(a,b), A) — compound"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "term_to_atom(foo(a,b), A)" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "A"))))
+  "foo(a, b)")
+
+(pl-io-test!
+  "term_to_atom(hello, A) — atom"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "term_to_atom(hello, A)" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "A"))))
+  "hello")
+
+(pl-io-test!
+  "term_to_atom(42, A) — number"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "term_to_atom(42, A)" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "A"))))
+  "42")
+
+(pl-io-test!
+  "term_to_atom(foo(a,b), 'foo(a, b)') — succeeds when Atom matches"
+  (pl-solve-once!
+    pl-io-db
+    (pl-io-goal "term_to_atom(foo(a,b), 'foo(a, b)')" {})
+    (pl-mk-trail))
+  true)
+
+(pl-io-test!
+  "term_to_atom(hello, world) — fails on mismatch"
+  (pl-solve-once!
+    pl-io-db
+    (pl-io-goal "term_to_atom(hello, world)" {})
+    (pl-mk-trail))
+  false)
+
+;; ─── term_to_atom/2 — parse direction (Atom bound, Term unbound) ───────────
+
+(pl-io-test!
+  "term_to_atom(T, 'foo(a)') — parse direction gives compound"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "term_to_atom(T, 'foo(a)')" env)
+      (pl-mk-trail))
+    (let
+      ((t (pl-walk-deep (dict-get env "T"))))
+      (and (pl-compound? t) (= (pl-fun t) "foo"))))
+  true)
+
+(pl-io-test!
+  "term_to_atom(T, hello) — parse direction gives atom"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "term_to_atom(T, hello)" env)
+      (pl-mk-trail))
+    (let
+      ((t (pl-walk-deep (dict-get env "T"))))
+      (and (pl-atom? t) (= (pl-atom-name t) "hello"))))
+  true)
+
+;; ─── term_string/2 — alias ──────────────────────────────────────────────────
+
+(pl-io-test!
+  "term_string(bar(x), A) — same as term_to_atom"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "term_string(bar(x), A)" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "A"))))
+  "bar(x)")
+
+(pl-io-test!
+  "term_string(42, A) — number to string"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "term_string(42, A)" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "A"))))
+  "42")
+
+;; ─── writeln/1 ─────────────────────────────────────────────────────────────
+
+(pl-io-test!
+  "writeln(hello) writes 'hello\n'"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), writeln(hello))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "hello
+")
+
+(pl-io-test!
+  "writeln(42) writes '42\n'"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), writeln(42))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "42
+")
+
+;; ─── with_output_to/2 ──────────────────────────────────────────────────────
+
+(pl-io-test!
+  "with_output_to(atom(X), write(foo)) — captures write output"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), write(foo))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "foo")
+
+(pl-io-test!
+  "with_output_to(atom(X), (write(a), write(b))) — concat output"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), (write(a), write(b)))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "ab")
+
+(pl-io-test!
+  "with_output_to(atom(X), nl) — captures newline"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), nl)" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "
+")
+
+(pl-io-test!
+  "with_output_to(atom(X), true) — captures empty string"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), true)" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "")
+
+(pl-io-test!
+  "with_output_to(string(X), write(hello)) — string sink works"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(string(X), write(hello))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "hello")
+
+(pl-io-test!
+  "with_output_to(atom(X), fail) — fails when goal fails"
+  (pl-solve-once!
+    pl-io-db
+    (pl-io-goal "with_output_to(atom(X), fail)" {})
+    (pl-mk-trail))
+  false)
+
+;; ─── format/1 ──────────────────────────────────────────────────────────────
+
+(pl-io-test!
+  "format('hello~n') — tilde-n becomes newline"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), format('hello~n'))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "hello
+")
+
+(pl-io-test!
+  "format('~~') — double tilde becomes single tilde"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), format('~~'))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "~")
+
+(pl-io-test!
+  "format('abc') — plain text passes through"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), format(abc))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "abc")
+
+;; ─── format/2 ──────────────────────────────────────────────────────────────
+
+(pl-io-test!
+  "format('~w+~w', [1,2]) — two ~w args"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), format('~w+~w', [1,2]))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "1+2")
+
+(pl-io-test!
+  "format('hello ~a!', [world]) — ~a with atom arg"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), format('hello ~a!', [world]))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "hello world!")
+
+(pl-io-test!
+  "format('n=~d', [42]) — ~d with integer arg"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), format('n=~d', [42]))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "n=42")
+
+(pl-io-test!
+  "format('~w', [foo(a)]) — ~w with compound"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-io-db
+      (pl-io-goal "with_output_to(atom(X), format('~w', [foo(a)]))" env)
+      (pl-mk-trail))
+    (pl-atom-name (pl-walk-deep (dict-get env "X"))))
+  "foo(a)")
+
+(define
+  pl-io-predicates-tests-run!
+  (fn
+    ()
+    {:failed pl-io-test-fail
+      :passed pl-io-test-pass
+      :total pl-io-test-count
+      :failures pl-io-test-failures}))

lib/prolog/tests/iso_predicates.sx

@@ -0,0 +1,320 @@
+;; lib/prolog/tests/iso_predicates.sx — succ/2, plus/3, between/3, length/2, last/2, nth0/3, nth1/3, max/min arith
+
+(define pl-ip-test-count 0)
+(define pl-ip-test-pass 0)
+(define pl-ip-test-fail 0)
+(define pl-ip-test-failures (list))
+
+(define
+  pl-ip-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-ip-test-count (+ pl-ip-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-ip-test-pass (+ pl-ip-test-pass 1))
+        (begin
+          (set! pl-ip-test-fail (+ pl-ip-test-fail 1))
+          (append!
+            pl-ip-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-ip-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-ip-db (pl-mk-db))
+
+;; ── succ/2 ──
+
+(define pl-ip-env-s1 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "succ(3, X)" pl-ip-env-s1)
+  (pl-mk-trail))
+(pl-ip-test!
+  "succ(3, X) → X=4"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-s1 "X")))
+  4)
+
+(define pl-ip-env-s2 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "succ(0, X)" pl-ip-env-s2)
+  (pl-mk-trail))
+(pl-ip-test!
+  "succ(0, X) → X=1"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-s2 "X")))
+  1)
+
+(define pl-ip-env-s3 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "succ(X, 5)" pl-ip-env-s3)
+  (pl-mk-trail))
+(pl-ip-test!
+  "succ(X, 5) → X=4"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-s3 "X")))
+  4)
+
+(pl-ip-test!
+  "succ(X, 0) fails"
+  (pl-solve-once!
+    pl-ip-db
+    (pl-ip-goal "succ(X, 0)" {})
+    (pl-mk-trail))
+  false)
+
+;; ── plus/3 ──
+
+(define pl-ip-env-p1 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "plus(2, 3, X)" pl-ip-env-p1)
+  (pl-mk-trail))
+(pl-ip-test!
+  "plus(2, 3, X) → X=5"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-p1 "X")))
+  5)
+
+(define pl-ip-env-p2 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "plus(2, X, 7)" pl-ip-env-p2)
+  (pl-mk-trail))
+(pl-ip-test!
+  "plus(2, X, 7) → X=5"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-p2 "X")))
+  5)
+
+(define pl-ip-env-p3 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "plus(X, 3, 7)" pl-ip-env-p3)
+  (pl-mk-trail))
+(pl-ip-test!
+  "plus(X, 3, 7) → X=4"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-p3 "X")))
+  4)
+
+(pl-ip-test!
+  "plus(0, 0, 0) succeeds"
+  (pl-solve-once!
+    pl-ip-db
+    (pl-ip-goal "plus(0, 0, 0)" {})
+    (pl-mk-trail))
+  true)
+
+;; ── between/3 ──
+
+(pl-ip-test!
+  "between(1, 3, X): 3 solutions"
+  (pl-solve-count!
+    pl-ip-db
+    (pl-ip-goal "between(1, 3, X)" {})
+    (pl-mk-trail))
+  3)
+
+(pl-ip-test!
+  "between(1, 3, 2) succeeds"
+  (pl-solve-once!
+    pl-ip-db
+    (pl-ip-goal "between(1, 3, 2)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-ip-test!
+  "between(1, 3, 5) fails"
+  (pl-solve-once!
+    pl-ip-db
+    (pl-ip-goal "between(1, 3, 5)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-ip-test!
+  "between(5, 3, X): 0 solutions (empty range)"
+  (pl-solve-count!
+    pl-ip-db
+    (pl-ip-goal "between(5, 3, X)" {})
+    (pl-mk-trail))
+  0)
+
+(define pl-ip-env-b1 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "between(1, 5, X)" pl-ip-env-b1)
+  (pl-mk-trail))
+(pl-ip-test!
+  "between(1, 5, X): first solution X=1"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-b1 "X")))
+  1)
+
+(pl-ip-test!
+  "between + condition: between(1,5,X), X > 3 → 2 solutions"
+  (pl-solve-count!
+    pl-ip-db
+    (pl-ip-goal "between(1, 5, X), X > 3" {})
+    (pl-mk-trail))
+  2)
+
+;; ── length/2 ──
+
+(define pl-ip-env-l1 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "length([1,2,3], N)" pl-ip-env-l1)
+  (pl-mk-trail))
+(pl-ip-test!
+  "length([1,2,3], N) → N=3"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-l1 "N")))
+  3)
+
+(define pl-ip-env-l2 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "length([], N)" pl-ip-env-l2)
+  (pl-mk-trail))
+(pl-ip-test!
+  "length([], N) → N=0"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-l2 "N")))
+  0)
+
+(pl-ip-test!
+  "length([a,b], 2) check succeeds"
+  (pl-solve-once!
+    pl-ip-db
+    (pl-ip-goal "length([a,b], 2)" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-ip-env-l3 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "length(L, 3)" pl-ip-env-l3)
+  (pl-mk-trail))
+(pl-ip-test!
+  "length(L, 3): L is a list of length 3"
+  (pl-solve-once!
+    pl-ip-db
+    (pl-ip-goal "length(L, 3), is_list(L)" pl-ip-env-l3)
+    (pl-mk-trail))
+  true)
+
+;; ── last/2 ──
+
+(define pl-ip-env-la1 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "last([1,2,3], X)" pl-ip-env-la1)
+  (pl-mk-trail))
+(pl-ip-test!
+  "last([1,2,3], X) → X=3"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-la1 "X")))
+  3)
+
+(define pl-ip-env-la2 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "last([a], X)" pl-ip-env-la2)
+  (pl-mk-trail))
+(pl-ip-test!
+  "last([a], X) → X=a"
+  (pl-atom-name (pl-walk-deep (dict-get pl-ip-env-la2 "X")))
+  "a")
+
+(pl-ip-test!
+  "last([], X) fails"
+  (pl-solve-once!
+    pl-ip-db
+    (pl-ip-goal "last([], X)" {})
+    (pl-mk-trail))
+  false)
+
+;; ── nth0/3 ──
+
+(define pl-ip-env-n0 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "nth0(0, [a,b,c], X)" pl-ip-env-n0)
+  (pl-mk-trail))
+(pl-ip-test!
+  "nth0(0, [a,b,c], X) → X=a"
+  (pl-atom-name (pl-walk-deep (dict-get pl-ip-env-n0 "X")))
+  "a")
+
+(define pl-ip-env-n1 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "nth0(2, [a,b,c], X)" pl-ip-env-n1)
+  (pl-mk-trail))
+(pl-ip-test!
+  "nth0(2, [a,b,c], X) → X=c"
+  (pl-atom-name (pl-walk-deep (dict-get pl-ip-env-n1 "X")))
+  "c")
+
+(pl-ip-test!
+  "nth0(5, [a,b,c], X) fails"
+  (pl-solve-once!
+    pl-ip-db
+    (pl-ip-goal "nth0(5, [a,b,c], X)" {})
+    (pl-mk-trail))
+  false)
+
+;; ── nth1/3 ──
+
+(define pl-ip-env-n1a {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "nth1(1, [a,b,c], X)" pl-ip-env-n1a)
+  (pl-mk-trail))
+(pl-ip-test!
+  "nth1(1, [a,b,c], X) → X=a"
+  (pl-atom-name (pl-walk-deep (dict-get pl-ip-env-n1a "X")))
+  "a")
+
+(define pl-ip-env-n1b {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "nth1(3, [a,b,c], X)" pl-ip-env-n1b)
+  (pl-mk-trail))
+(pl-ip-test!
+  "nth1(3, [a,b,c], X) → X=c"
+  (pl-atom-name (pl-walk-deep (dict-get pl-ip-env-n1b "X")))
+  "c")
+
+;; ── max/min in arithmetic ──
+
+(define pl-ip-env-m1 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "X is max(3, 5)" pl-ip-env-m1)
+  (pl-mk-trail))
+(pl-ip-test!
+  "X is max(3, 5) → X=5"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-m1 "X")))
+  5)
+
+(define pl-ip-env-m2 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "X is min(3, 5)" pl-ip-env-m2)
+  (pl-mk-trail))
+(pl-ip-test!
+  "X is min(3, 5) → X=3"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-m2 "X")))
+  3)
+
+(define pl-ip-env-m3 {})
+(pl-solve-once!
+  pl-ip-db
+  (pl-ip-goal "X is max(7, 2) + min(1, 4)" pl-ip-env-m3)
+  (pl-mk-trail))
+(pl-ip-test!
+  "X is max(7,2) + min(1,4) → X=8"
+  (pl-num-val (pl-walk-deep (dict-get pl-ip-env-m3 "X")))
+  8)
+
+(define pl-iso-predicates-tests-run! (fn () {:failed pl-ip-test-fail :passed pl-ip-test-pass :total pl-ip-test-count :failures pl-ip-test-failures}))

lib/prolog/tests/list_predicates.sx

@@ -0,0 +1,335 @@
+;; lib/prolog/tests/list_predicates.sx — ==/2, \==/2, flatten/2, numlist/3,
+;;   atomic_list_concat/2,3, sum_list/2, max_list/2, min_list/2, delete/3
+
+(define pl-lp-test-count 0)
+(define pl-lp-test-pass 0)
+(define pl-lp-test-fail 0)
+(define pl-lp-test-failures (list))
+
+(define
+  pl-lp-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-lp-test-count (+ pl-lp-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-lp-test-pass (+ pl-lp-test-pass 1))
+        (begin
+          (set! pl-lp-test-fail (+ pl-lp-test-fail 1))
+          (append!
+            pl-lp-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-lp-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-lp-db (pl-mk-db))
+
+;; ── ==/2 ───────────────────────────────────────────────────────────
+
+(pl-lp-test!
+  "==(a, a) succeeds"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "==(a, a)" {}) (pl-mk-trail))
+  true)
+
+(pl-lp-test!
+  "==(a, b) fails"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "==(a, b)" {}) (pl-mk-trail))
+  false)
+
+(pl-lp-test!
+  "==(1, 1) succeeds"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "==(1, 1)" {}) (pl-mk-trail))
+  true)
+
+(pl-lp-test!
+  "==(1, 2) fails"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "==(1, 2)" {}) (pl-mk-trail))
+  false)
+
+(pl-lp-test!
+  "==(f(a,b), f(a,b)) succeeds"
+  (pl-solve-once!
+    pl-lp-db
+    (pl-lp-goal "==(f(a,b), f(a,b))" {})
+    (pl-mk-trail))
+  true)
+
+(pl-lp-test!
+  "==(f(a,b), f(a,c)) fails"
+  (pl-solve-once!
+    pl-lp-db
+    (pl-lp-goal "==(f(a,b), f(a,c))" {})
+    (pl-mk-trail))
+  false)
+
+;; unbound var vs atom: fails (different tags)
+(pl-lp-test!
+  "==(X, a) fails (unbound var vs atom)"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "==(X, a)" {}) (pl-mk-trail))
+  false)
+
+;; two unbound vars with SAME name in same env share the same runtime var
+(define pl-lp-env-same-var {})
+(pl-lp-goal "==(X, X)" pl-lp-env-same-var)
+(pl-lp-test!
+  "==(X, X) succeeds (same runtime var)"
+  (pl-solve-once!
+    pl-lp-db
+    (pl-instantiate
+      (nth (first (pl-parse "g :- ==(X, X).")) 2)
+      pl-lp-env-same-var)
+    (pl-mk-trail))
+  true)
+
+;; ── \==/2 ──────────────────────────────────────────────────────────
+
+(pl-lp-test!
+  "\\==(a, b) succeeds"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "\\==(a, b)" {}) (pl-mk-trail))
+  true)
+
+(pl-lp-test!
+  "\\==(a, a) fails"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "\\==(a, a)" {}) (pl-mk-trail))
+  false)
+
+(pl-lp-test!
+  "\\==(X, a) succeeds (unbound var differs from atom)"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "\\==(X, a)" {}) (pl-mk-trail))
+  true)
+
+(pl-lp-test!
+  "\\==(1, 2) succeeds"
+  (pl-solve-once! pl-lp-db (pl-lp-goal "\\==(1, 2)" {}) (pl-mk-trail))
+  true)
+
+;; ── flatten/2 ──────────────────────────────────────────────────────
+
+(define pl-lp-env-fl1 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "flatten([], F)" pl-lp-env-fl1)
+  (pl-mk-trail))
+(pl-lp-test!
+  "flatten([], []) -> empty"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-fl1 "F")))
+  "[]")
+
+(define pl-lp-env-fl2 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "flatten([1,2,3], F)" pl-lp-env-fl2)
+  (pl-mk-trail))
+(pl-lp-test!
+  "flatten([1,2,3], F) -> [1,2,3]"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-fl2 "F")))
+  ".(1, .(2, .(3, [])))")
+
+(define pl-lp-env-fl3 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "flatten([1,[2,[3]],4], F)" pl-lp-env-fl3)
+  (pl-mk-trail))
+(pl-lp-test!
+  "flatten([1,[2,[3]],4], F) -> [1,2,3,4]"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-fl3 "F")))
+  ".(1, .(2, .(3, .(4, []))))")
+
+(define pl-lp-env-fl4 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "flatten([[a,b],[c]], F)" pl-lp-env-fl4)
+  (pl-mk-trail))
+(pl-lp-test!
+  "flatten([[a,b],[c]], F) -> [a,b,c]"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-fl4 "F")))
+  ".(a, .(b, .(c, [])))")
+
+;; ── numlist/3 ──────────────────────────────────────────────────────
+
+(define pl-lp-env-nl1 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "numlist(1, 5, L)" pl-lp-env-nl1)
+  (pl-mk-trail))
+(pl-lp-test!
+  "numlist(1,5,L) -> [1,2,3,4,5]"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-nl1 "L")))
+  ".(1, .(2, .(3, .(4, .(5, [])))))")
+
+(define pl-lp-env-nl2 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "numlist(3, 3, L)" pl-lp-env-nl2)
+  (pl-mk-trail))
+(pl-lp-test!
+  "numlist(3,3,L) -> [3]"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-nl2 "L")))
+  ".(3, [])")
+
+(pl-lp-test!
+  "numlist(5, 3, L) fails (Low > High)"
+  (pl-solve-once!
+    pl-lp-db
+    (pl-lp-goal "numlist(5, 3, L)" {})
+    (pl-mk-trail))
+  false)
+
+;; ── atomic_list_concat/2 ───────────────────────────────────────────
+
+(define pl-lp-env-alc1 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "atomic_list_concat([a, b, c], R)" pl-lp-env-alc1)
+  (pl-mk-trail))
+(pl-lp-test!
+  "atomic_list_concat([a,b,c], R) -> abc"
+  (pl-atom-name (pl-walk-deep (dict-get pl-lp-env-alc1 "R")))
+  "abc")
+
+(define pl-lp-env-alc2 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "atomic_list_concat([hello, world], R)" pl-lp-env-alc2)
+  (pl-mk-trail))
+(pl-lp-test!
+  "atomic_list_concat([hello,world], R) -> helloworld"
+  (pl-atom-name (pl-walk-deep (dict-get pl-lp-env-alc2 "R")))
+  "helloworld")
+
+;; ── atomic_list_concat/3 ───────────────────────────────────────────
+
+(define pl-lp-env-alcs1 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "atomic_list_concat([a, b, c], '-', R)" pl-lp-env-alcs1)
+  (pl-mk-trail))
+(pl-lp-test!
+  "atomic_list_concat([a,b,c], '-', R) -> a-b-c"
+  (pl-atom-name (pl-walk-deep (dict-get pl-lp-env-alcs1 "R")))
+  "a-b-c")
+
+(define pl-lp-env-alcs2 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "atomic_list_concat([x], '-', R)" pl-lp-env-alcs2)
+  (pl-mk-trail))
+(pl-lp-test!
+  "atomic_list_concat([x], '-', R) -> x (single element, no sep)"
+  (pl-atom-name (pl-walk-deep (dict-get pl-lp-env-alcs2 "R")))
+  "x")
+
+;; ── sum_list/2 ─────────────────────────────────────────────────────
+
+(define pl-lp-env-sl1 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "sum_list([1,2,3], S)" pl-lp-env-sl1)
+  (pl-mk-trail))
+(pl-lp-test!
+  "sum_list([1,2,3], S) -> 6"
+  (pl-num-val (pl-walk-deep (dict-get pl-lp-env-sl1 "S")))
+  6)
+
+(define pl-lp-env-sl2 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "sum_list([10], S)" pl-lp-env-sl2)
+  (pl-mk-trail))
+(pl-lp-test!
+  "sum_list([10], S) -> 10"
+  (pl-num-val (pl-walk-deep (dict-get pl-lp-env-sl2 "S")))
+  10)
+
+(define pl-lp-env-sl3 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "sum_list([], S)" pl-lp-env-sl3)
+  (pl-mk-trail))
+(pl-lp-test!
+  "sum_list([], S) -> 0"
+  (pl-num-val (pl-walk-deep (dict-get pl-lp-env-sl3 "S")))
+  0)
+
+;; ── max_list/2 ─────────────────────────────────────────────────────
+
+(define pl-lp-env-mx1 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "max_list([3,1,4,1,5,9,2,6], M)" pl-lp-env-mx1)
+  (pl-mk-trail))
+(pl-lp-test!
+  "max_list([3,1,4,1,5,9,2,6], M) -> 9"
+  (pl-num-val (pl-walk-deep (dict-get pl-lp-env-mx1 "M")))
+  9)
+
+(define pl-lp-env-mx2 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "max_list([7], M)" pl-lp-env-mx2)
+  (pl-mk-trail))
+(pl-lp-test!
+  "max_list([7], M) -> 7"
+  (pl-num-val (pl-walk-deep (dict-get pl-lp-env-mx2 "M")))
+  7)
+
+;; ── min_list/2 ─────────────────────────────────────────────────────
+
+(define pl-lp-env-mn1 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "min_list([3,1,4,1,5,9,2,6], M)" pl-lp-env-mn1)
+  (pl-mk-trail))
+(pl-lp-test!
+  "min_list([3,1,4,1,5,9,2,6], M) -> 1"
+  (pl-num-val (pl-walk-deep (dict-get pl-lp-env-mn1 "M")))
+  1)
+
+(define pl-lp-env-mn2 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "min_list([5,2,8], M)" pl-lp-env-mn2)
+  (pl-mk-trail))
+(pl-lp-test!
+  "min_list([5,2,8], M) -> 2"
+  (pl-num-val (pl-walk-deep (dict-get pl-lp-env-mn2 "M")))
+  2)
+
+;; ── delete/3 ───────────────────────────────────────────────────────
+
+(define pl-lp-env-del1 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "delete([1,2,3,2,1], 2, R)" pl-lp-env-del1)
+  (pl-mk-trail))
+(pl-lp-test!
+  "delete([1,2,3,2,1], 2, R) -> [1,3,1]"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-del1 "R")))
+  ".(1, .(3, .(1, [])))")
+
+(define pl-lp-env-del2 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "delete([a,b,c], d, R)" pl-lp-env-del2)
+  (pl-mk-trail))
+(pl-lp-test!
+  "delete([a,b,c], d, R) -> [a,b,c] (nothing deleted)"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-del2 "R")))
+  ".(a, .(b, .(c, [])))")
+
+(define pl-lp-env-del3 {})
+(pl-solve-once!
+  pl-lp-db
+  (pl-lp-goal "delete([], x, R)" pl-lp-env-del3)
+  (pl-mk-trail))
+(pl-lp-test!
+  "delete([], x, R) -> []"
+  (pl-format-term (pl-walk-deep (dict-get pl-lp-env-del3 "R")))
+  "[]")
+
+(define pl-list-predicates-tests-run! (fn () {:failed pl-lp-test-fail :passed pl-lp-test-pass :total pl-lp-test-count :failures pl-lp-test-failures}))

lib/prolog/tests/meta_call.sx

@@ -0,0 +1,197 @@
+;; lib/prolog/tests/meta_call.sx — forall/2, maplist/2, maplist/3, include/3, exclude/3
+(define pl-mc-test-count 0)
+(define pl-mc-test-pass 0)
+(define pl-mc-test-fail 0)
+(define pl-mc-test-failures (list))
+
+(define
+  pl-mc-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-mc-test-count (+ pl-mc-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-mc-test-pass (+ pl-mc-test-pass 1))
+        (begin
+          (set! pl-mc-test-fail (+ pl-mc-test-fail 1))
+          (append!
+            pl-mc-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-mc-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define
+  pl-mc-term-to-sx
+  (fn
+    (t)
+    (cond
+      ((pl-num? t) (pl-num-val t))
+      ((pl-atom? t) (pl-atom-name t))
+      (else t))))
+
+(define
+  pl-mc-list-sx
+  (fn
+    (t)
+    (let
+      ((w (pl-walk-deep t)))
+      (cond
+        ((and (pl-atom? w) (= (pl-atom-name w) "[]")) (list))
+        ((and (pl-compound? w) (= (pl-fun w) "."))
+          (cons
+            (pl-mc-term-to-sx (first (pl-args w)))
+            (pl-mc-list-sx (nth (pl-args w) 1))))
+        (else (list :not-list))))))
+
+(define pl-mc-db (pl-mk-db))
+
+(pl-db-load!
+  pl-mc-db
+  (pl-parse "member(X, [X|_]). member(X, [_|T]) :- member(X, T)."))
+
+(pl-db-load! pl-mc-db (pl-parse "double(X, Y) :- Y is X * 2."))
+
+(pl-db-load! pl-mc-db (pl-parse "even(X) :- 0 is X mod 2."))
+
+;; -- forall/2 --
+
+(pl-mc-test!
+  "forall(member(X,[2,4,6]), 0 is X mod 2) — all even"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "forall(member(X,[2,4,6]), 0 is X mod 2)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mc-test!
+  "forall(member(X,[2,3,6]), 0 is X mod 2) — 3 is odd, fails"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "forall(member(X,[2,3,6]), 0 is X mod 2)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-mc-test!
+  "forall(member(_,[]), true) — vacuously true"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "forall(member(_,[]), true)" {})
+    (pl-mk-trail))
+  true)
+
+;; -- maplist/2 --
+
+(pl-mc-test!
+  "maplist(atom, [a,b,c]) — all atoms"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "maplist(atom, [a,b,c])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mc-test!
+  "maplist(atom, [a,1,c]) — 1 is not atom, fails"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "maplist(atom, [a,1,c])" {})
+    (pl-mk-trail))
+  false)
+
+(pl-mc-test!
+  "maplist(atom, []) — vacuously true"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "maplist(atom, [])" {})
+    (pl-mk-trail))
+  true)
+
+;; -- maplist/3 --
+
+(pl-mc-test!
+  "maplist(double, [1,2,3], [2,4,6]) — deterministic check"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "maplist(double, [1,2,3], [2,4,6])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mc-test!
+  "maplist(double, [1,2,3], [2,4,7]) — wrong result fails"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "maplist(double, [1,2,3], [2,4,7])" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-mc-env-ml3 {:L (pl-mk-rt-var "L")})
+(pl-solve-once!
+  pl-mc-db
+  (pl-mc-goal "maplist(double, [1,2,3], L)" pl-mc-env-ml3)
+  (pl-mk-trail))
+(pl-mc-test!
+  "maplist(double, [1,2,3], L) — L bound to [2,4,6]"
+  (pl-mc-list-sx (dict-get pl-mc-env-ml3 "L"))
+  (list 2 4 6))
+
+;; -- include/3 --
+
+(pl-mc-test!
+  "include(even, [1,2,3,4,5,6], [2,4,6])"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "include(even, [1,2,3,4,5,6], [2,4,6])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mc-test!
+  "include(even, [], [])"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "include(even, [], [])" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-mc-env-inc {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-mc-db
+  (pl-mc-goal "include(even, [1,2,3,4,5,6], R)" pl-mc-env-inc)
+  (pl-mk-trail))
+(pl-mc-test!
+  "include(even, [1,2,3,4,5,6], R) — R bound to [2,4,6]"
+  (pl-mc-list-sx (dict-get pl-mc-env-inc "R"))
+  (list 2 4 6))
+
+;; -- exclude/3 --
+
+(pl-mc-test!
+  "exclude(even, [1,2,3,4,5,6], [1,3,5])"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "exclude(even, [1,2,3,4,5,6], [1,3,5])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mc-test!
+  "exclude(even, [], [])"
+  (pl-solve-once!
+    pl-mc-db
+    (pl-mc-goal "exclude(even, [], [])" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-mc-env-exc {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-mc-db
+  (pl-mc-goal "exclude(even, [1,2,3,4,5,6], R)" pl-mc-env-exc)
+  (pl-mk-trail))
+(pl-mc-test!
+  "exclude(even, [1,2,3,4,5,6], R) — R bound to [1,3,5]"
+  (pl-mc-list-sx (dict-get pl-mc-env-exc "R"))
+  (list 1 3 5))
+
+(define pl-meta-call-tests-run! (fn () {:failed pl-mc-test-fail :passed pl-mc-test-pass :total pl-mc-test-count :failures pl-mc-test-failures}))

lib/prolog/tests/meta_predicates.sx

@@ -0,0 +1,252 @@
+;; lib/prolog/tests/meta_predicates.sx — \+/1, not/1, once/1, ignore/1, ground/1, sort/2, msort/2, atom_number/2, number_string/2
+
+(define pl-mp-test-count 0)
+(define pl-mp-test-pass 0)
+(define pl-mp-test-fail 0)
+(define pl-mp-test-failures (list))
+
+(define
+  pl-mp-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-mp-test-count (+ pl-mp-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-mp-test-pass (+ pl-mp-test-pass 1))
+        (begin
+          (set! pl-mp-test-fail (+ pl-mp-test-fail 1))
+          (append!
+            pl-mp-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-mp-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-mp-db (pl-mk-db))
+(pl-db-load!
+  pl-mp-db
+  (pl-parse "member(X, [X|_]). member(X, [_|T]) :- member(X, T)."))
+
+;; -- \+/1 --
+
+(pl-mp-test!
+  "\\+(fail) succeeds"
+  (pl-solve-once! pl-mp-db (pl-mp-goal "\\+(fail)" {}) (pl-mk-trail))
+  true)
+
+(pl-mp-test!
+  "\\+(true) fails"
+  (pl-solve-once! pl-mp-db (pl-mp-goal "\\+(true)" {}) (pl-mk-trail))
+  false)
+
+(pl-mp-test!
+  "\\+(member(d, [a,b,c])) succeeds"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "\\+(member(d, [a,b,c]))" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mp-test!
+  "\\+(member(a, [a,b,c])) fails"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "\\+(member(a, [a,b,c]))" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-mp-env-neg {})
+(pl-solve-once!
+  pl-mp-db
+  (pl-mp-goal "\\+(X = 5)" pl-mp-env-neg)
+  (pl-mk-trail))
+(pl-mp-test!
+  "\\+(X=5) fails, X stays unbound (bindings undone)"
+  (nil? (pl-var-binding (dict-get pl-mp-env-neg "X")))
+  true)
+
+;; -- not/1 --
+
+(pl-mp-test!
+  "not(fail) succeeds"
+  (pl-solve-once! pl-mp-db (pl-mp-goal "not(fail)" {}) (pl-mk-trail))
+  true)
+
+(pl-mp-test!
+  "not(true) fails"
+  (pl-solve-once! pl-mp-db (pl-mp-goal "not(true)" {}) (pl-mk-trail))
+  false)
+
+;; -- once/1 --
+
+(pl-mp-test!
+  "once(member(X,[1,2,3])) succeeds once"
+  (pl-solve-count!
+    pl-mp-db
+    (pl-mp-goal "once(member(X,[1,2,3]))" {})
+    (pl-mk-trail))
+  1)
+
+(define pl-mp-env-once {})
+(pl-solve-once!
+  pl-mp-db
+  (pl-mp-goal "once(member(X,[1,2,3]))" pl-mp-env-once)
+  (pl-mk-trail))
+(pl-mp-test!
+  "once(member(X,[1,2,3])): X=1 (first solution)"
+  (pl-num-val (pl-walk-deep (dict-get pl-mp-env-once "X")))
+  1)
+
+(pl-mp-test!
+  "once(fail) fails"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "once(fail)" {})
+    (pl-mk-trail))
+  false)
+
+;; -- ignore/1 --
+
+(pl-mp-test!
+  "ignore(true) succeeds"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "ignore(true)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mp-test!
+  "ignore(fail) still succeeds"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "ignore(fail)" {})
+    (pl-mk-trail))
+  true)
+
+;; -- ground/1 --
+
+(pl-mp-test!
+  "ground(foo(1, a)) succeeds"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "ground(foo(1, a))" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mp-test!
+  "ground(foo(X, a)) fails (X unbound)"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "ground(foo(X, a))" {})
+    (pl-mk-trail))
+  false)
+
+(pl-mp-test!
+  "ground(42) succeeds"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "ground(42)" {})
+    (pl-mk-trail))
+  true)
+
+;; -- sort/2 --
+
+(pl-mp-test!
+  "sort([b,a,c], [a,b,c])"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "sort([b,a,c], [a,b,c])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mp-test!
+  "sort([b,a,a,c], [a,b,c]) (removes duplicates)"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "sort([b,a,a,c], [a,b,c])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mp-test!
+  "sort([], [])"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "sort([], [])" {})
+    (pl-mk-trail))
+  true)
+
+;; -- msort/2 --
+
+(pl-mp-test!
+  "msort([b,a,a,c], [a,a,b,c]) (keeps duplicates)"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "msort([b,a,a,c], [a,a,b,c])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mp-test!
+  "msort([3,1,2,1], [1,1,2,3])"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "msort([3,1,2,1], [1,1,2,3])" {})
+    (pl-mk-trail))
+  true)
+
+;; -- atom_number/2 --
+
+(define pl-mp-env-an1 {})
+(pl-solve-once!
+  pl-mp-db
+  (pl-mp-goal "atom_number('42', N)" pl-mp-env-an1)
+  (pl-mk-trail))
+(pl-mp-test!
+  "atom_number('42', N) -> N=42"
+  (pl-num-val (pl-walk-deep (dict-get pl-mp-env-an1 "N")))
+  42)
+
+(define pl-mp-env-an2 {})
+(pl-solve-once!
+  pl-mp-db
+  (pl-mp-goal "atom_number(A, 7)" pl-mp-env-an2)
+  (pl-mk-trail))
+(pl-mp-test!
+  "atom_number(A, 7) -> A='7'"
+  (pl-atom-name (pl-walk-deep (dict-get pl-mp-env-an2 "A")))
+  "7")
+
+(pl-mp-test!
+  "atom_number(foo, N) fails (not a number)"
+  (pl-solve-once!
+    pl-mp-db
+    (pl-mp-goal "atom_number(foo, N)" {})
+    (pl-mk-trail))
+  false)
+
+;; -- number_string/2 --
+
+(define pl-mp-env-ns1 {})
+(pl-solve-once!
+  pl-mp-db
+  (pl-mp-goal "number_string(42, S)" pl-mp-env-ns1)
+  (pl-mk-trail))
+(pl-mp-test!
+  "number_string(42, S) -> S='42'"
+  (pl-atom-name (pl-walk-deep (dict-get pl-mp-env-ns1 "S")))
+  "42")
+
+(define pl-mp-env-ns2 {})
+(pl-solve-once!
+  pl-mp-db
+  (pl-mp-goal "number_string(N, '3.14')" pl-mp-env-ns2)
+  (pl-mk-trail))
+(pl-mp-test!
+  "number_string(N, '3.14') -> N=3.14"
+  (pl-num-val (pl-walk-deep (dict-get pl-mp-env-ns2 "N")))
+  3.14)
+
+(define pl-meta-predicates-tests-run! (fn () {:failed pl-mp-test-fail :passed pl-mp-test-pass :total pl-mp-test-count :failures pl-mp-test-failures}))

lib/prolog/tests/operators.sx

@@ -0,0 +1,193 @@
+;; lib/prolog/tests/operators.sx — operator-table parsing + comparison built-ins.
+
+(define pl-op-test-count 0)
+(define pl-op-test-pass 0)
+(define pl-op-test-fail 0)
+(define pl-op-test-failures (list))
+
+(define
+  pl-op-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-op-test-count (+ pl-op-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-op-test-pass (+ pl-op-test-pass 1))
+        (begin
+          (set! pl-op-test-fail (+ pl-op-test-fail 1))
+          (append!
+            pl-op-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define pl-op-empty-db (pl-mk-db))
+
+(define
+  pl-op-body
+  (fn (src) (nth (first (pl-parse (str "g :- " src "."))) 2)))
+
+(define pl-op-goal (fn (src env) (pl-instantiate (pl-op-body src) env)))
+
+;; ── parsing tests ──
+
+(pl-op-test!
+  "infix +"
+  (pl-op-body "a + b")
+  (list "compound" "+" (list (list "atom" "a") (list "atom" "b"))))
+
+(pl-op-test!
+  "infix * tighter than +"
+  (pl-op-body "a + b * c")
+  (list
+    "compound"
+    "+"
+    (list
+      (list "atom" "a")
+      (list "compound" "*" (list (list "atom" "b") (list "atom" "c"))))))
+
+(pl-op-test!
+  "parens override precedence"
+  (pl-op-body "(a + b) * c")
+  (list
+    "compound"
+    "*"
+    (list
+      (list "compound" "+" (list (list "atom" "a") (list "atom" "b")))
+      (list "atom" "c"))))
+
+(pl-op-test!
+  "+ is yfx (left-assoc)"
+  (pl-op-body "a + b + c")
+  (list
+    "compound"
+    "+"
+    (list
+      (list "compound" "+" (list (list "atom" "a") (list "atom" "b")))
+      (list "atom" "c"))))
+
+(pl-op-test!
+  "; is xfy (right-assoc)"
+  (pl-op-body "a ; b ; c")
+  (list
+    "compound"
+    ";"
+    (list
+      (list "atom" "a")
+      (list "compound" ";" (list (list "atom" "b") (list "atom" "c"))))))
+
+(pl-op-test!
+  "= folds at 700"
+  (pl-op-body "X = 5")
+  (list "compound" "=" (list (list "var" "X") (list "num" 5))))
+
+(pl-op-test!
+  "is + nests via 700>500>400"
+  (pl-op-body "X is 2 + 3 * 4")
+  (list
+    "compound"
+    "is"
+    (list
+      (list "var" "X")
+      (list
+        "compound"
+        "+"
+        (list
+          (list "num" 2)
+          (list "compound" "*" (list (list "num" 3) (list "num" 4))))))))
+
+(pl-op-test!
+  "< parses at 700"
+  (pl-op-body "2 < 3")
+  (list "compound" "<" (list (list "num" 2) (list "num" 3))))
+
+(pl-op-test!
+  "mod parses as yfx 400"
+  (pl-op-body "10 mod 3")
+  (list "compound" "mod" (list (list "num" 10) (list "num" 3))))
+
+(pl-op-test!
+  "comma in body folds right-assoc"
+  (pl-op-body "a, b, c")
+  (list
+    "compound"
+    ","
+    (list
+      (list "atom" "a")
+      (list "compound" "," (list (list "atom" "b") (list "atom" "c"))))))
+
+;; ── solver tests via infix ──
+
+(pl-op-test!
+  "X is 2 + 3 binds X = 5"
+  (let
+    ((env {}) (trail (pl-mk-trail)))
+    (begin
+      (pl-solve-once! pl-op-empty-db (pl-op-goal "X is 2 + 3" env) trail)
+      (pl-num-val (pl-walk-deep (dict-get env "X")))))
+  5)
+
+(pl-op-test!
+  "infix conjunction parses + solves"
+  (pl-solve-once!
+    pl-op-empty-db
+    (pl-op-goal "X = 5, X = 5" {})
+    (pl-mk-trail))
+  true)
+
+(pl-op-test!
+  "infix mismatch fails"
+  (pl-solve-once!
+    pl-op-empty-db
+    (pl-op-goal "X = 5, X = 6" {})
+    (pl-mk-trail))
+  false)
+
+(pl-op-test!
+  "infix disjunction picks left"
+  (pl-solve-once!
+    pl-op-empty-db
+    (pl-op-goal "true ; fail" {})
+    (pl-mk-trail))
+  true)
+
+(pl-op-test!
+  "2 < 5 succeeds"
+  (pl-solve-once!
+    pl-op-empty-db
+    (pl-op-goal "2 < 5" {})
+    (pl-mk-trail))
+  true)
+
+(pl-op-test!
+  "5 < 2 fails"
+  (pl-solve-once!
+    pl-op-empty-db
+    (pl-op-goal "5 < 2" {})
+    (pl-mk-trail))
+  false)
+
+(pl-op-test!
+  "5 >= 5 succeeds"
+  (pl-solve-once!
+    pl-op-empty-db
+    (pl-op-goal "5 >= 5" {})
+    (pl-mk-trail))
+  true)
+
+(pl-op-test!
+  "3 =< 5 succeeds"
+  (pl-solve-once!
+    pl-op-empty-db
+    (pl-op-goal "3 =< 5" {})
+    (pl-mk-trail))
+  true)
+
+(pl-op-test!
+  "infix < with arithmetic both sides"
+  (pl-solve-once!
+    pl-op-empty-db
+    (pl-op-goal "1 + 2 < 2 * 3" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-operators-tests-run! (fn () {:failed pl-op-test-fail :passed pl-op-test-pass :total pl-op-test-count :failures pl-op-test-failures}))

lib/prolog/tests/programs/append.pl

@@ -0,0 +1,5 @@
+%% append/3 — list concatenation, classic Prolog
+%% Two clauses: empty-prefix base case + recursive cons-prefix.
+%% Bidirectional — works in all modes: build, check, split.
+append([], L, L).
+append([H|T], L, [H|R]) :- append(T, L, R).

lib/prolog/tests/programs/append.sx

@@ -0,0 +1,114 @@
+;; lib/prolog/tests/programs/append.sx — append/3 test runner
+;;
+;; Mirrors the Prolog source in append.pl (embedded as a string here because
+;; the SX runtime has no file-read primitive yet).
+
+(define pl-ap-test-count 0)
+(define pl-ap-test-pass 0)
+(define pl-ap-test-fail 0)
+(define pl-ap-test-failures (list))
+
+(define
+  pl-ap-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-ap-test-count (+ pl-ap-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-ap-test-pass (+ pl-ap-test-pass 1))
+        (begin
+          (set! pl-ap-test-fail (+ pl-ap-test-fail 1))
+          (append!
+            pl-ap-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-ap-term-to-sx
+  (fn
+    (t)
+    (cond
+      ((pl-num? t) (pl-num-val t))
+      ((pl-atom? t) (pl-atom-name t))
+      (true (list :complex)))))
+
+(define
+  pl-ap-list-walked
+  (fn
+    (w)
+    (cond
+      ((and (pl-atom? w) (= (pl-atom-name w) "[]")) (list))
+      ((and (pl-compound? w) (= (pl-fun w) ".") (= (len (pl-args w)) 2))
+        (cons
+          (pl-ap-term-to-sx (first (pl-args w)))
+          (pl-ap-list-walked (nth (pl-args w) 1))))
+      (true (list :not-list)))))
+
+(define pl-ap-list-to-sx (fn (t) (pl-ap-list-walked (pl-walk-deep t))))
+
+(define
+  pl-ap-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define
+  pl-ap-prog-src
+  "append([], L, L). append([H|T], L, [H|R]) :- append(T, L, R).")
+
+(define pl-ap-db (pl-mk-db))
+
+(pl-db-load! pl-ap-db (pl-parse pl-ap-prog-src))
+
+(define pl-ap-env-1 {})
+(define pl-ap-goal-1 (pl-ap-goal "append([], [a, b], X)" pl-ap-env-1))
+(pl-solve-once! pl-ap-db pl-ap-goal-1 (pl-mk-trail))
+
+(pl-ap-test!
+  "append([], [a, b], X) → X = [a, b]"
+  (pl-ap-list-to-sx (dict-get pl-ap-env-1 "X"))
+  (list "a" "b"))
+
+(define pl-ap-env-2 {})
+(define pl-ap-goal-2 (pl-ap-goal "append([1, 2], [3, 4], X)" pl-ap-env-2))
+(pl-solve-once! pl-ap-db pl-ap-goal-2 (pl-mk-trail))
+
+(pl-ap-test!
+  "append([1, 2], [3, 4], X) → X = [1, 2, 3, 4]"
+  (pl-ap-list-to-sx (dict-get pl-ap-env-2 "X"))
+  (list 1 2 3 4))
+
+(pl-ap-test!
+  "append([1], [2, 3], [1, 2, 3]) succeeds"
+  (pl-solve-once!
+    pl-ap-db
+    (pl-ap-goal "append([1], [2, 3], [1, 2, 3])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-ap-test!
+  "append([1, 2], [3], [1, 2, 4]) fails"
+  (pl-solve-once!
+    pl-ap-db
+    (pl-ap-goal "append([1, 2], [3], [1, 2, 4])" {})
+    (pl-mk-trail))
+  false)
+
+(pl-ap-test!
+  "append(X, Y, [1, 2, 3]) backtracks 4 times"
+  (pl-solve-count!
+    pl-ap-db
+    (pl-ap-goal "append(X, Y, [1, 2, 3])" {})
+    (pl-mk-trail))
+  4)
+
+(define pl-ap-env-6 {})
+(define pl-ap-goal-6 (pl-ap-goal "append(X, [3], [1, 2, 3])" pl-ap-env-6))
+(pl-solve-once! pl-ap-db pl-ap-goal-6 (pl-mk-trail))
+
+(pl-ap-test!
+  "append(X, [3], [1, 2, 3]) deduces X = [1, 2]"
+  (pl-ap-list-to-sx (dict-get pl-ap-env-6 "X"))
+  (list 1 2))
+
+(define pl-append-tests-run! (fn () {:failed pl-ap-test-fail :passed pl-ap-test-pass :total pl-ap-test-count :failures pl-ap-test-failures}))

lib/prolog/tests/programs/family.pl

@@ -0,0 +1,24 @@
+%% family — facts + transitive ancestor + derived relations.
+%% Five-generation tree: tom -> bob -> {ann, pat} -> jim, plus tom's
+%% other child liz.
+
+parent(tom, bob).
+parent(tom, liz).
+parent(bob, ann).
+parent(bob, pat).
+parent(pat, jim).
+
+male(tom).
+male(bob).
+male(jim).
+male(pat).
+female(liz).
+female(ann).
+
+father(F, C) :- parent(F, C), male(F).
+mother(M, C) :- parent(M, C), female(M).
+
+ancestor(X, Y) :- parent(X, Y).
+ancestor(X, Y) :- parent(X, Z), ancestor(Z, Y).
+
+sibling(X, Y) :- parent(P, X), parent(P, Y), \=(X, Y).

lib/prolog/tests/programs/family.sx

@@ -0,0 +1,116 @@
+;; lib/prolog/tests/programs/family.sx — facts + ancestor + sibling relations.
+
+(define pl-fa-test-count 0)
+(define pl-fa-test-pass 0)
+(define pl-fa-test-fail 0)
+(define pl-fa-test-failures (list))
+
+(define
+  pl-fa-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-fa-test-count (+ pl-fa-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-fa-test-pass (+ pl-fa-test-pass 1))
+        (begin
+          (set! pl-fa-test-fail (+ pl-fa-test-fail 1))
+          (append!
+            pl-fa-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-fa-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define
+  pl-fa-prog-src
+  "parent(tom, bob). parent(tom, liz). parent(bob, ann). parent(bob, pat). parent(pat, jim). male(tom). male(bob). male(jim). male(pat). female(liz). female(ann). father(F, C) :- parent(F, C), male(F). mother(M, C) :- parent(M, C), female(M). ancestor(X, Y) :- parent(X, Y). ancestor(X, Y) :- parent(X, Z), ancestor(Z, Y). sibling(X, Y) :- parent(P, X), parent(P, Y), \\=(X, Y).")
+
+(define pl-fa-db (pl-mk-db))
+(pl-db-load! pl-fa-db (pl-parse pl-fa-prog-src))
+
+(pl-fa-test!
+  "parent(tom, bob) is a fact"
+  (pl-solve-once!
+    pl-fa-db
+    (pl-fa-goal "parent(tom, bob)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-fa-test!
+  "parent(tom, ann) — not a direct parent"
+  (pl-solve-once!
+    pl-fa-db
+    (pl-fa-goal "parent(tom, ann)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-fa-test!
+  "5 parent/2 facts in total"
+  (pl-solve-count!
+    pl-fa-db
+    (pl-fa-goal "parent(X, Y)" {})
+    (pl-mk-trail))
+  5)
+
+(pl-fa-test!
+  "ancestor(tom, jim) — three-step transitive"
+  (pl-solve-once!
+    pl-fa-db
+    (pl-fa-goal "ancestor(tom, jim)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-fa-test!
+  "tom has 5 ancestors-of: bob, liz, ann, pat, jim"
+  (pl-solve-count!
+    pl-fa-db
+    (pl-fa-goal "ancestor(tom, X)" {})
+    (pl-mk-trail))
+  5)
+
+(pl-fa-test!
+  "father(bob, ann) succeeds"
+  (pl-solve-once!
+    pl-fa-db
+    (pl-fa-goal "father(bob, ann)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-fa-test!
+  "father(liz, ann) fails (liz is female)"
+  (pl-solve-once!
+    pl-fa-db
+    (pl-fa-goal "father(liz, ann)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-fa-test!
+  "mother(liz, X) fails (liz has no children)"
+  (pl-solve-once!
+    pl-fa-db
+    (pl-fa-goal "mother(liz, X)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-fa-test!
+  "sibling(ann, pat) succeeds"
+  (pl-solve-once!
+    pl-fa-db
+    (pl-fa-goal "sibling(ann, pat)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-fa-test!
+  "sibling(ann, ann) fails by \\="
+  (pl-solve-once!
+    pl-fa-db
+    (pl-fa-goal "sibling(ann, ann)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-family-tests-run! (fn () {:failed pl-fa-test-fail :passed pl-fa-test-pass :total pl-fa-test-count :failures pl-fa-test-failures}))

lib/prolog/tests/programs/member.pl

@@ -0,0 +1,4 @@
+%% member/2 — list membership.
+%% Generates all solutions on backtracking when the element is unbound.
+member(X, [X|_]).
+member(X, [_|T]) :- member(X, T).

lib/prolog/tests/programs/member.sx

@@ -0,0 +1,91 @@
+;; lib/prolog/tests/programs/member.sx — member/2 generator.
+
+(define pl-mb-test-count 0)
+(define pl-mb-test-pass 0)
+(define pl-mb-test-fail 0)
+(define pl-mb-test-failures (list))
+
+(define
+  pl-mb-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-mb-test-count (+ pl-mb-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-mb-test-pass (+ pl-mb-test-pass 1))
+        (begin
+          (set! pl-mb-test-fail (+ pl-mb-test-fail 1))
+          (append!
+            pl-mb-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-mb-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-mb-prog-src "member(X, [X|_]). member(X, [_|T]) :- member(X, T).")
+
+(define pl-mb-db (pl-mk-db))
+(pl-db-load! pl-mb-db (pl-parse pl-mb-prog-src))
+
+(pl-mb-test!
+  "member(2, [1, 2, 3]) succeeds"
+  (pl-solve-once!
+    pl-mb-db
+    (pl-mb-goal "member(2, [1, 2, 3])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-mb-test!
+  "member(4, [1, 2, 3]) fails"
+  (pl-solve-once!
+    pl-mb-db
+    (pl-mb-goal "member(4, [1, 2, 3])" {})
+    (pl-mk-trail))
+  false)
+
+(pl-mb-test!
+  "member(X, []) fails"
+  (pl-solve-once!
+    pl-mb-db
+    (pl-mb-goal "member(X, [])" {})
+    (pl-mk-trail))
+  false)
+
+(pl-mb-test!
+  "member(X, [a, b, c]) generates 3 solutions"
+  (pl-solve-count!
+    pl-mb-db
+    (pl-mb-goal "member(X, [a, b, c])" {})
+    (pl-mk-trail))
+  3)
+
+(define pl-mb-env-1 {})
+(define pl-mb-goal-1 (pl-mb-goal "member(X, [11, 22, 33])" pl-mb-env-1))
+(pl-solve-once! pl-mb-db pl-mb-goal-1 (pl-mk-trail))
+
+(pl-mb-test!
+  "member(X, [11, 22, 33]) first solution X = 11"
+  (pl-num-val (pl-walk-deep (dict-get pl-mb-env-1 "X")))
+  11)
+
+(pl-mb-test!
+  "member(2, [1, 2, 3, 2, 1]) matches twice on backtrack"
+  (pl-solve-count!
+    pl-mb-db
+    (pl-mb-goal "member(2, [1, 2, 3, 2, 1])" {})
+    (pl-mk-trail))
+  2)
+
+(pl-mb-test!
+  "member with unbound list cell unifies"
+  (pl-solve-once!
+    pl-mb-db
+    (pl-mb-goal "member(a, [X, b, c])" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-member-tests-run! (fn () {:failed pl-mb-test-fail :passed pl-mb-test-pass :total pl-mb-test-count :failures pl-mb-test-failures}))

lib/prolog/tests/programs/nqueens.pl

@@ -0,0 +1,27 @@
+%% nqueens — permutation-and-test formulation.
+%% Caller passes the row list [1..N]; queens/2 finds N column placements
+%% s.t. no two queens attack on a diagonal. Same-column attacks are
+%% structurally impossible — Qs is a permutation, all distinct.
+%%
+%% No `>/2` `</2` `=</2` built-ins yet, so range/3 is omitted; tests pass
+%; the literal range list. Once the operator table lands and arithmetic
+%% comparison built-ins are in, range/3 can be added.
+queens(L, Qs) :- permute(L, Qs), safe(Qs).
+
+permute([], []).
+permute(L, [H|T]) :- select(H, L, R), permute(R, T).
+
+select(X, [X|T], T).
+select(X, [H|T], [H|R]) :- select(X, T, R).
+
+safe([]).
+safe([Q|Qs]) :- safe(Qs), no_attack(Q, Qs, 1).
+
+no_attack(_, [], _).
+no_attack(Q, [Q1|Qs], D) :-
+  is(D2, +(Q, D)),
+  \=(D2, Q1),
+  is(D3, -(Q, D)),
+  \=(D3, Q1),
+  is(D1, +(D, 1)),
+  no_attack(Q, Qs, D1).

lib/prolog/tests/programs/nqueens.sx

@@ -0,0 +1,108 @@
+;; lib/prolog/tests/programs/nqueens.sx — N-queens via permute + safe.
+
+(define pl-nq-test-count 0)
+(define pl-nq-test-pass 0)
+(define pl-nq-test-fail 0)
+(define pl-nq-test-failures (list))
+
+(define
+  pl-nq-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-nq-test-count (+ pl-nq-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-nq-test-pass (+ pl-nq-test-pass 1))
+        (begin
+          (set! pl-nq-test-fail (+ pl-nq-test-fail 1))
+          (append!
+            pl-nq-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-nq-term-to-sx
+  (fn
+    (t)
+    (cond
+      ((pl-num? t) (pl-num-val t))
+      ((pl-atom? t) (pl-atom-name t))
+      (true (list :complex)))))
+
+(define
+  pl-nq-list-walked
+  (fn
+    (w)
+    (cond
+      ((and (pl-atom? w) (= (pl-atom-name w) "[]")) (list))
+      ((and (pl-compound? w) (= (pl-fun w) ".") (= (len (pl-args w)) 2))
+        (cons
+          (pl-nq-term-to-sx (first (pl-args w)))
+          (pl-nq-list-walked (nth (pl-args w) 1))))
+      (true (list :not-list)))))
+
+(define pl-nq-list-to-sx (fn (t) (pl-nq-list-walked (pl-walk-deep t))))
+
+(define
+  pl-nq-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define
+  pl-nq-prog-src
+  "queens(L, Qs) :- permute(L, Qs), safe(Qs). permute([], []). permute(L, [H|T]) :- select(H, L, R), permute(R, T). select(X, [X|T], T). select(X, [H|T], [H|R]) :- select(X, T, R). safe([]). safe([Q|Qs]) :- safe(Qs), no_attack(Q, Qs, 1). no_attack(_, [], _). no_attack(Q, [Q1|Qs], D) :- is(D2, +(Q, D)), \\=(D2, Q1), is(D3, -(Q, D)), \\=(D3, Q1), is(D1, +(D, 1)), no_attack(Q, Qs, D1).")
+
+(define pl-nq-db (pl-mk-db))
+(pl-db-load! pl-nq-db (pl-parse pl-nq-prog-src))
+
+(pl-nq-test!
+  "queens([1], Qs) → 1 solution"
+  (pl-solve-count!
+    pl-nq-db
+    (pl-nq-goal "queens([1], Qs)" {})
+    (pl-mk-trail))
+  1)
+
+(pl-nq-test!
+  "queens([1, 2], Qs) → 0 solutions"
+  (pl-solve-count!
+    pl-nq-db
+    (pl-nq-goal "queens([1, 2], Qs)" {})
+    (pl-mk-trail))
+  0)
+
+(pl-nq-test!
+  "queens([1, 2, 3], Qs) → 0 solutions"
+  (pl-solve-count!
+    pl-nq-db
+    (pl-nq-goal "queens([1, 2, 3], Qs)" {})
+    (pl-mk-trail))
+  0)
+
+(pl-nq-test!
+  "queens([1, 2, 3, 4], Qs) → 2 solutions"
+  (pl-solve-count!
+    pl-nq-db
+    (pl-nq-goal "queens([1, 2, 3, 4], Qs)" {})
+    (pl-mk-trail))
+  2)
+
+(pl-nq-test!
+  "queens([1, 2, 3, 4, 5], Qs) → 10 solutions"
+  (pl-solve-count!
+    pl-nq-db
+    (pl-nq-goal "queens([1, 2, 3, 4, 5], Qs)" {})
+    (pl-mk-trail))
+  10)
+
+(define pl-nq-env-1 {})
+(define pl-nq-goal-1 (pl-nq-goal "queens([1, 2, 3, 4], Qs)" pl-nq-env-1))
+(pl-solve-once! pl-nq-db pl-nq-goal-1 (pl-mk-trail))
+
+(pl-nq-test!
+  "queens([1..4], Qs) first solution = [2, 4, 1, 3]"
+  (pl-nq-list-to-sx (dict-get pl-nq-env-1 "Qs"))
+  (list 2 4 1 3))
+
+(define pl-nqueens-tests-run! (fn () {:failed pl-nq-test-fail :passed pl-nq-test-pass :total pl-nq-test-count :failures pl-nq-test-failures}))

lib/prolog/tests/programs/reverse.pl

@@ -0,0 +1,7 @@
+%% reverse/2 — naive reverse via append/3.
+%% Quadratic — accumulates the reversed prefix one append per cons.
+reverse([], []).
+reverse([H|T], R) :- reverse(T, RT), append(RT, [H], R).
+
+append([], L, L).
+append([H|T], L, [H|R]) :- append(T, L, R).

lib/prolog/tests/programs/reverse.sx

@@ -0,0 +1,113 @@
+;; lib/prolog/tests/programs/reverse.sx — naive reverse/2 via append/3.
+;;
+;; Mirrors reverse.pl (embedded as a string here).
+
+(define pl-rv-test-count 0)
+(define pl-rv-test-pass 0)
+(define pl-rv-test-fail 0)
+(define pl-rv-test-failures (list))
+
+(define
+  pl-rv-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-rv-test-count (+ pl-rv-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-rv-test-pass (+ pl-rv-test-pass 1))
+        (begin
+          (set! pl-rv-test-fail (+ pl-rv-test-fail 1))
+          (append!
+            pl-rv-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-rv-term-to-sx
+  (fn
+    (t)
+    (cond
+      ((pl-num? t) (pl-num-val t))
+      ((pl-atom? t) (pl-atom-name t))
+      (true (list :complex)))))
+
+(define
+  pl-rv-list-walked
+  (fn
+    (w)
+    (cond
+      ((and (pl-atom? w) (= (pl-atom-name w) "[]")) (list))
+      ((and (pl-compound? w) (= (pl-fun w) ".") (= (len (pl-args w)) 2))
+        (cons
+          (pl-rv-term-to-sx (first (pl-args w)))
+          (pl-rv-list-walked (nth (pl-args w) 1))))
+      (true (list :not-list)))))
+
+(define pl-rv-list-to-sx (fn (t) (pl-rv-list-walked (pl-walk-deep t))))
+
+(define
+  pl-rv-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define
+  pl-rv-prog-src
+  "reverse([], []). reverse([H|T], R) :- reverse(T, RT), append(RT, [H], R). append([], L, L). append([H|T], L, [H|R]) :- append(T, L, R).")
+
+(define pl-rv-db (pl-mk-db))
+(pl-db-load! pl-rv-db (pl-parse pl-rv-prog-src))
+
+(define pl-rv-env-1 {})
+(define pl-rv-goal-1 (pl-rv-goal "reverse([], X)" pl-rv-env-1))
+(pl-solve-once! pl-rv-db pl-rv-goal-1 (pl-mk-trail))
+
+(pl-rv-test!
+  "reverse([], X) → X = []"
+  (pl-rv-list-to-sx (dict-get pl-rv-env-1 "X"))
+  (list))
+
+(define pl-rv-env-2 {})
+(define pl-rv-goal-2 (pl-rv-goal "reverse([1], X)" pl-rv-env-2))
+(pl-solve-once! pl-rv-db pl-rv-goal-2 (pl-mk-trail))
+
+(pl-rv-test!
+  "reverse([1], X) → X = [1]"
+  (pl-rv-list-to-sx (dict-get pl-rv-env-2 "X"))
+  (list 1))
+
+(define pl-rv-env-3 {})
+(define pl-rv-goal-3 (pl-rv-goal "reverse([1, 2, 3], X)" pl-rv-env-3))
+(pl-solve-once! pl-rv-db pl-rv-goal-3 (pl-mk-trail))
+
+(pl-rv-test!
+  "reverse([1, 2, 3], X) → X = [3, 2, 1]"
+  (pl-rv-list-to-sx (dict-get pl-rv-env-3 "X"))
+  (list 3 2 1))
+
+(define pl-rv-env-4 {})
+(define pl-rv-goal-4 (pl-rv-goal "reverse([a, b, c, d], X)" pl-rv-env-4))
+(pl-solve-once! pl-rv-db pl-rv-goal-4 (pl-mk-trail))
+
+(pl-rv-test!
+  "reverse([a, b, c, d], X) → X = [d, c, b, a]"
+  (pl-rv-list-to-sx (dict-get pl-rv-env-4 "X"))
+  (list "d" "c" "b" "a"))
+
+(pl-rv-test!
+  "reverse([1, 2, 3], [3, 2, 1]) succeeds"
+  (pl-solve-once!
+    pl-rv-db
+    (pl-rv-goal "reverse([1, 2, 3], [3, 2, 1])" {})
+    (pl-mk-trail))
+  true)
+
+(pl-rv-test!
+  "reverse([1, 2], [1, 2]) fails"
+  (pl-solve-once!
+    pl-rv-db
+    (pl-rv-goal "reverse([1, 2], [1, 2])" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-reverse-tests-run! (fn () {:failed pl-rv-test-fail :passed pl-rv-test-pass :total pl-rv-test-count :failures pl-rv-test-failures}))

lib/prolog/tests/query_api.sx

@@ -0,0 +1,127 @@
+;; lib/prolog/tests/query_api.sx — tests for pl-load/pl-query-all/pl-query-one/pl-query
+
+(define pl-qa-test-count 0)
+(define pl-qa-test-pass 0)
+(define pl-qa-test-fail 0)
+(define pl-qa-test-failures (list))
+
+(define
+  pl-qa-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-qa-test-count (+ pl-qa-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-qa-test-pass (+ pl-qa-test-pass 1))
+        (begin
+          (set! pl-qa-test-fail (+ pl-qa-test-fail 1))
+          (append!
+            pl-qa-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-qa-src
+  "parent(tom, bob). parent(tom, liz). parent(bob, ann). ancestor(X, Y) :- parent(X, Y). ancestor(X, Y) :- parent(X, Z), ancestor(Z, Y).")
+
+(define pl-qa-db (pl-load pl-qa-src))
+
+;; ── pl-load ──
+
+(pl-qa-test!
+  "pl-load returns a usable DB (pl-query-all non-nil)"
+  (not (nil? pl-qa-db))
+  true)
+
+;; ── pl-query-all: basic fact lookup ──
+
+(pl-qa-test!
+  "query-all parent(tom, X): 2 solutions"
+  (len (pl-query-all pl-qa-db "parent(tom, X)"))
+  2)
+
+(pl-qa-test!
+  "query-all parent(tom, X): first solution X=bob"
+  (dict-get (first (pl-query-all pl-qa-db "parent(tom, X)")) "X")
+  "bob")
+
+(pl-qa-test!
+  "query-all parent(tom, X): second solution X=liz"
+  (dict-get (nth (pl-query-all pl-qa-db "parent(tom, X)") 1) "X")
+  "liz")
+
+;; ── pl-query-all: no solutions ──
+
+(pl-qa-test!
+  "query-all no solutions returns empty list"
+  (pl-query-all pl-qa-db "parent(liz, X)")
+  (list))
+
+;; ── pl-query-all: boolean query (no vars) ──
+
+(pl-qa-test!
+  "boolean success: 1 solution (empty dict)"
+  (len (pl-query-all pl-qa-db "parent(tom, bob)"))
+  1)
+
+(pl-qa-test!
+  "boolean success: solution has no bindings"
+  (empty? (keys (first (pl-query-all pl-qa-db "parent(tom, bob)"))))
+  true)
+
+(pl-qa-test!
+  "boolean fail: 0 solutions"
+  (len (pl-query-all pl-qa-db "parent(bob, tom)"))
+  0)
+
+;; ── pl-query-all: multi-var ──
+
+(pl-qa-test!
+  "query-all parent(X, Y): 3 solutions total"
+  (len (pl-query-all pl-qa-db "parent(X, Y)"))
+  3)
+
+;; ── pl-query-all: rule-based (ancestor/2) ──
+
+(pl-qa-test!
+  "query-all ancestor(tom, X): 3 descendants (bob, liz, ann)"
+  (len (pl-query-all pl-qa-db "ancestor(tom, X)"))
+  3)
+
+;; ── pl-query-all: built-in in query ──
+
+(pl-qa-test!
+  "query with is/2 built-in"
+  (dict-get (first (pl-query-all pl-qa-db "X is 2 + 3")) "X")
+  "5")
+
+;; ── pl-query-one ──
+
+(pl-qa-test!
+  "query-one returns first solution"
+  (dict-get (pl-query-one pl-qa-db "parent(tom, X)") "X")
+  "bob")
+
+(pl-qa-test!
+  "query-one returns nil for no solutions"
+  (pl-query-one pl-qa-db "parent(liz, X)")
+  nil)
+
+;; ── pl-query convenience ──
+
+(pl-qa-test!
+  "pl-query convenience: count solutions"
+  (len (pl-query "likes(alice, bob). likes(alice, carol)." "likes(alice, X)"))
+  2)
+
+(pl-qa-test!
+  "pl-query convenience: first solution"
+  (dict-get (first (pl-query "likes(alice, bob). likes(alice, carol)." "likes(alice, X)")) "X")
+  "bob")
+
+(pl-qa-test!
+  "pl-query with empty source (built-ins only)"
+  (dict-get (first (pl-query "" "X is 6 * 7")) "X")
+  "42")
+
+(define pl-query-api-tests-run! (fn () {:failed pl-qa-test-fail :passed pl-qa-test-pass :total pl-qa-test-count :failures pl-qa-test-failures}))

lib/prolog/tests/set_predicates.sx

@@ -0,0 +1,195 @@
+;; lib/prolog/tests/set_predicates.sx — foldl/4, list_to_set/2, intersection/3, subtract/3, union/3
+
+(define pl-sp-test-count 0)
+(define pl-sp-test-pass 0)
+(define pl-sp-test-fail 0)
+(define pl-sp-test-failures (list))
+
+(define
+  pl-sp-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-sp-test-count (+ pl-sp-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-sp-test-pass (+ pl-sp-test-pass 1))
+        (begin
+          (set! pl-sp-test-fail (+ pl-sp-test-fail 1))
+          (append!
+            pl-sp-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-sp-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+;; DB with add/3 for foldl tests
+(define pl-sp-db (pl-mk-db))
+(pl-db-load! pl-sp-db (pl-parse "add(X, Acc, NAcc) :- NAcc is Acc + X."))
+
+;; ── foldl/4 ────────────────────────────────────────────────────────
+
+(define pl-sp-env-fl1 {:S (pl-mk-rt-var "S")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "foldl(add, [1,2,3,4], 0, S)" pl-sp-env-fl1)
+  (pl-mk-trail))
+(pl-sp-test!
+  "foldl(add,[1,2,3,4],0,S) -> S=10"
+  (pl-num-val (pl-walk-deep (dict-get pl-sp-env-fl1 "S")))
+  10)
+
+(define pl-sp-env-fl2 {:S (pl-mk-rt-var "S")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "foldl(add, [], 5, S)" pl-sp-env-fl2)
+  (pl-mk-trail))
+(pl-sp-test!
+  "foldl(add,[],5,S) -> S=5"
+  (pl-num-val (pl-walk-deep (dict-get pl-sp-env-fl2 "S")))
+  5)
+
+(define pl-sp-env-fl3 {:S (pl-mk-rt-var "S")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "foldl(add, [1,2,3], 0, S)" pl-sp-env-fl3)
+  (pl-mk-trail))
+(pl-sp-test!
+  "foldl(add,[1,2,3],0,S) -> S=6"
+  (pl-num-val (pl-walk-deep (dict-get pl-sp-env-fl3 "S")))
+  6)
+
+;; ── list_to_set/2 ──────────────────────────────────────────────────
+
+(define pl-sp-env-lts1 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "list_to_set([1,2,3,2,1], R)" pl-sp-env-lts1)
+  (pl-mk-trail))
+(pl-sp-test!
+  "list_to_set([1,2,3,2,1],R) -> [1,2,3]"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-lts1 "R")))
+  ".(1, .(2, .(3, [])))")
+
+(define pl-sp-env-lts2 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "list_to_set([], R)" pl-sp-env-lts2)
+  (pl-mk-trail))
+(pl-sp-test!
+  "list_to_set([],R) -> []"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-lts2 "R")))
+  "[]")
+
+(define pl-sp-env-lts3 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "list_to_set([a,b,a,c], R)" pl-sp-env-lts3)
+  (pl-mk-trail))
+(pl-sp-test!
+  "list_to_set([a,b,a,c],R) -> [a,b,c]"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-lts3 "R")))
+  ".(a, .(b, .(c, [])))")
+
+;; ── intersection/3 ─────────────────────────────────────────────────
+
+(define pl-sp-env-int1 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "intersection([1,2,3,4], [2,4,6], R)" pl-sp-env-int1)
+  (pl-mk-trail))
+(pl-sp-test!
+  "intersection([1,2,3,4],[2,4,6],R) -> [2,4]"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-int1 "R")))
+  ".(2, .(4, []))")
+
+(define pl-sp-env-int2 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "intersection([1,2,3], [4,5,6], R)" pl-sp-env-int2)
+  (pl-mk-trail))
+(pl-sp-test!
+  "intersection([1,2,3],[4,5,6],R) -> []"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-int2 "R")))
+  "[]")
+
+(define pl-sp-env-int3 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "intersection([], [1,2,3], R)" pl-sp-env-int3)
+  (pl-mk-trail))
+(pl-sp-test!
+  "intersection([],[1,2,3],R) -> []"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-int3 "R")))
+  "[]")
+
+;; ── subtract/3 ─────────────────────────────────────────────────────
+
+(define pl-sp-env-sub1 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "subtract([1,2,3,4], [2,4], R)" pl-sp-env-sub1)
+  (pl-mk-trail))
+(pl-sp-test!
+  "subtract([1,2,3,4],[2,4],R) -> [1,3]"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-sub1 "R")))
+  ".(1, .(3, []))")
+
+(define pl-sp-env-sub2 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "subtract([1,2,3], [], R)" pl-sp-env-sub2)
+  (pl-mk-trail))
+(pl-sp-test!
+  "subtract([1,2,3],[],R) -> [1,2,3]"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-sub2 "R")))
+  ".(1, .(2, .(3, [])))")
+
+(define pl-sp-env-sub3 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "subtract([], [1,2], R)" pl-sp-env-sub3)
+  (pl-mk-trail))
+(pl-sp-test!
+  "subtract([],[1,2],R) -> []"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-sub3 "R")))
+  "[]")
+
+;; ── union/3 ────────────────────────────────────────────────────────
+
+(define pl-sp-env-uni1 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "union([1,2,3], [2,3,4], R)" pl-sp-env-uni1)
+  (pl-mk-trail))
+(pl-sp-test!
+  "union([1,2,3],[2,3,4],R) -> [1,2,3,4]"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-uni1 "R")))
+  ".(1, .(2, .(3, .(4, []))))")
+
+(define pl-sp-env-uni2 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "union([], [1,2], R)" pl-sp-env-uni2)
+  (pl-mk-trail))
+(pl-sp-test!
+  "union([],[1,2],R) -> [1,2]"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-uni2 "R")))
+  ".(1, .(2, []))")
+
+(define pl-sp-env-uni3 {:R (pl-mk-rt-var "R")})
+(pl-solve-once!
+  pl-sp-db
+  (pl-sp-goal "union([1,2], [], R)" pl-sp-env-uni3)
+  (pl-mk-trail))
+(pl-sp-test!
+  "union([1,2],[],R) -> [1,2]"
+  (pl-format-term (pl-walk-deep (dict-get pl-sp-env-uni3 "R")))
+  ".(1, .(2, []))")
+
+;; ── Runner ─────────────────────────────────────────────────────────
+
+(define pl-set-predicates-tests-run! (fn () {:failed pl-sp-test-fail :passed pl-sp-test-pass :total pl-sp-test-count :failures pl-sp-test-failures}))

lib/prolog/tests/solve.sx

@@ -0,0 +1,618 @@
+;; lib/prolog/tests/solve.sx — DFS solver unit tests
+
+(define pl-s-test-count 0)
+(define pl-s-test-pass 0)
+(define pl-s-test-fail 0)
+(define pl-s-test-failures (list))
+
+(define
+  pl-s-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-s-test-count (+ pl-s-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-s-test-pass (+ pl-s-test-pass 1))
+        (begin
+          (set! pl-s-test-fail (+ pl-s-test-fail 1))
+          (append!
+            pl-s-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-s-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-s-empty-db (pl-mk-db))
+
+(pl-s-test!
+  "true succeeds"
+  (pl-solve-once! pl-s-empty-db (pl-s-goal "true" {}) (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "fail fails"
+  (pl-solve-once! pl-s-empty-db (pl-s-goal "fail" {}) (pl-mk-trail))
+  false)
+
+(pl-s-test!
+  "= identical atoms"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "=(a, a)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "= different atoms"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "=(a, b)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-s-test!
+  "= var to atom"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "=(X, foo)" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-s-env-bind {})
+(define pl-s-trail-bind (pl-mk-trail))
+(define pl-s-goal-bind (pl-s-goal "=(X, foo)" pl-s-env-bind))
+(pl-solve-once! pl-s-empty-db pl-s-goal-bind pl-s-trail-bind)
+
+(pl-s-test!
+  "X bound to foo after =(X, foo)"
+  (pl-atom-name (pl-walk-deep (dict-get pl-s-env-bind "X")))
+  "foo")
+
+(pl-s-test!
+  "true , true succeeds"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "true, true" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "true , fail fails"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "true, fail" {})
+    (pl-mk-trail))
+  false)
+
+(pl-s-test!
+  "consistent X bindings succeed"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "=(X, a), =(X, a)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "conflicting X bindings fail"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "=(X, a), =(X, b)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-s-db1 (pl-mk-db))
+(pl-db-load!
+  pl-s-db1
+  (pl-parse "parent(tom, bob). parent(bob, liz). parent(bob, ann)."))
+
+(pl-s-test!
+  "fact lookup hit"
+  (pl-solve-once!
+    pl-s-db1
+    (pl-s-goal "parent(tom, bob)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "fact lookup miss"
+  (pl-solve-once!
+    pl-s-db1
+    (pl-s-goal "parent(tom, liz)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-s-test!
+  "all parent solutions"
+  (pl-solve-count!
+    pl-s-db1
+    (pl-s-goal "parent(X, Y)" {})
+    (pl-mk-trail))
+  3)
+
+(pl-s-test!
+  "fixed first arg solutions"
+  (pl-solve-count!
+    pl-s-db1
+    (pl-s-goal "parent(bob, Y)" {})
+    (pl-mk-trail))
+  2)
+
+(define pl-s-db2 (pl-mk-db))
+(pl-db-load!
+  pl-s-db2
+  (pl-parse
+    "parent(tom, bob). parent(bob, ann). ancestor(X, Y) :- parent(X, Y). ancestor(X, Z) :- parent(X, Y), ancestor(Y, Z)."))
+
+(pl-s-test!
+  "rule direct ancestor"
+  (pl-solve-once!
+    pl-s-db2
+    (pl-s-goal "ancestor(tom, bob)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "rule transitive ancestor"
+  (pl-solve-once!
+    pl-s-db2
+    (pl-s-goal "ancestor(tom, ann)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "rule no path"
+  (pl-solve-once!
+    pl-s-db2
+    (pl-s-goal "ancestor(ann, tom)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-s-env-undo {})
+(define pl-s-trail-undo (pl-mk-trail))
+(define pl-s-goal-undo (pl-s-goal "=(X, a), fail" pl-s-env-undo))
+(pl-solve-once! pl-s-empty-db pl-s-goal-undo pl-s-trail-undo)
+
+(pl-s-test!
+  "trail undone after failure leaves X unbound"
+  (pl-var-bound? (dict-get pl-s-env-undo "X"))
+  false)
+
+(define pl-s-db-cut1 (pl-mk-db))
+
+(pl-db-load! pl-s-db-cut1 (pl-parse "g :- !. g :- true."))
+
+(pl-s-test!
+  "bare cut succeeds"
+  (pl-solve-once! pl-s-db-cut1 (pl-s-goal "g" {}) (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "cut commits to first matching clause"
+  (pl-solve-count! pl-s-db-cut1 (pl-s-goal "g" {}) (pl-mk-trail))
+  1)
+
+(define pl-s-db-cut2 (pl-mk-db))
+
+(pl-db-load! pl-s-db-cut2 (pl-parse "a(1). a(2). g(X) :- a(X), !."))
+
+(pl-s-test!
+  "cut commits to first a solution"
+  (pl-solve-count! pl-s-db-cut2 (pl-s-goal "g(X)" {}) (pl-mk-trail))
+  1)
+
+(define pl-s-db-cut3 (pl-mk-db))
+
+(pl-db-load!
+  pl-s-db-cut3
+  (pl-parse "a(1). a(2). g(X) :- a(X), !, fail. g(99)."))
+
+(pl-s-test!
+  "cut then fail blocks alt clauses"
+  (pl-solve-count! pl-s-db-cut3 (pl-s-goal "g(X)" {}) (pl-mk-trail))
+  0)
+
+(define pl-s-db-cut4 (pl-mk-db))
+
+(pl-db-load!
+  pl-s-db-cut4
+  (pl-parse "a(1). b(10). b(20). g(X, Y) :- a(X), !, b(Y)."))
+
+(pl-s-test!
+  "post-cut goal backtracks freely"
+  (pl-solve-count!
+    pl-s-db-cut4
+    (pl-s-goal "g(X, Y)" {})
+    (pl-mk-trail))
+  2)
+
+(define pl-s-db-cut5 (pl-mk-db))
+
+(pl-db-load!
+  pl-s-db-cut5
+  (pl-parse "r(1). r(2). q :- r(X), !. p :- q. p :- true."))
+
+(pl-s-test!
+  "inner cut does not commit outer predicate"
+  (pl-solve-count! pl-s-db-cut5 (pl-s-goal "p" {}) (pl-mk-trail))
+  2)
+
+(pl-s-test!
+  "\\= different atoms succeeds"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "\\=(a, b)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "\\= same atoms fails"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "\\=(a, a)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-s-test!
+  "\\= var-vs-atom would unify so fails"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "\\=(X, a)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-s-env-ne {})
+
+(define pl-s-trail-ne (pl-mk-trail))
+
+(define pl-s-goal-ne (pl-s-goal "\\=(X, a)" pl-s-env-ne))
+
+(pl-solve-once! pl-s-empty-db pl-s-goal-ne pl-s-trail-ne)
+
+(pl-s-test!
+  "\\= leaves no bindings"
+  (pl-var-bound? (dict-get pl-s-env-ne "X"))
+  false)
+
+(pl-s-test!
+  "; left succeeds"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal ";(true, fail)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "; right succeeds when left fails"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal ";(fail, true)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "; both fail"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal ";(fail, fail)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-s-test!
+  "; both branches counted"
+  (pl-solve-count!
+    pl-s-empty-db
+    (pl-s-goal ";(true, true)" {})
+    (pl-mk-trail))
+  2)
+
+(define pl-s-db-call (pl-mk-db))
+
+(pl-db-load! pl-s-db-call (pl-parse "p(1). p(2)."))
+
+(pl-s-test!
+  "call(true) succeeds"
+  (pl-solve-once!
+    pl-s-db-call
+    (pl-s-goal "call(true)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "call(p(X)) yields all solutions"
+  (pl-solve-count!
+    pl-s-db-call
+    (pl-s-goal "call(p(X))" {})
+    (pl-mk-trail))
+  2)
+
+(pl-s-test!
+  "call of bound goal var resolves"
+  (pl-solve-once!
+    pl-s-db-call
+    (pl-s-goal "=(G, true), call(G)" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-s-db-ite (pl-mk-db))
+
+(pl-db-load! pl-s-db-ite (pl-parse "p(1). p(2). q(yes). q(no)."))
+
+(pl-s-test!
+  "if-then-else: cond true → then runs"
+  (pl-solve-once!
+    pl-s-db-ite
+    (pl-s-goal ";(->(true, =(X, ok)), =(X, fallback))" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-s-env-ite1 {})
+
+(pl-solve-once!
+  pl-s-db-ite
+  (pl-s-goal ";(->(true, =(X, ok)), =(X, fallback))" pl-s-env-ite1)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "if-then-else: cond true binds via then"
+  (pl-atom-name (pl-walk-deep (dict-get pl-s-env-ite1 "X")))
+  "ok")
+
+(pl-s-test!
+  "if-then-else: cond false → else"
+  (pl-solve-once!
+    pl-s-db-ite
+    (pl-s-goal ";(->(fail, =(X, ok)), =(X, fallback))" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-s-env-ite2 {})
+
+(pl-solve-once!
+  pl-s-db-ite
+  (pl-s-goal ";(->(fail, =(X, ok)), =(X, fallback))" pl-s-env-ite2)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "if-then-else: cond false binds via else"
+  (pl-atom-name (pl-walk-deep (dict-get pl-s-env-ite2 "X")))
+  "fallback")
+
+(pl-s-test!
+  "if-then-else: cond commits to first solution (count = 1)"
+  (pl-solve-count!
+    pl-s-db-ite
+    (pl-s-goal ";(->(p(X), =(Y, found)), =(Y, none))" {})
+    (pl-mk-trail))
+  1)
+
+(pl-s-test!
+  "if-then-else: then can backtrack"
+  (pl-solve-count!
+    pl-s-db-ite
+    (pl-s-goal ";(->(true, p(X)), =(X, none))" {})
+    (pl-mk-trail))
+  2)
+
+(pl-s-test!
+  "if-then-else: else can backtrack"
+  (pl-solve-count!
+    pl-s-db-ite
+    (pl-s-goal ";(->(fail, =(X, ignored)), p(X))" {})
+    (pl-mk-trail))
+  2)
+
+(pl-s-test!
+  "standalone -> with true cond succeeds"
+  (pl-solve-once!
+    pl-s-db-ite
+    (pl-s-goal "->(true, =(X, hi))" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "standalone -> with false cond fails"
+  (pl-solve-once!
+    pl-s-db-ite
+    (pl-s-goal "->(fail, =(X, hi))" {})
+    (pl-mk-trail))
+  false)
+
+(pl-s-test!
+  "write(hello)"
+  (begin
+    (pl-output-clear!)
+    (pl-solve-once!
+      pl-s-empty-db
+      (pl-s-goal "write(hello)" {})
+      (pl-mk-trail))
+    pl-output-buffer)
+  "hello")
+
+(pl-s-test!
+  "nl outputs newline"
+  (begin
+    (pl-output-clear!)
+    (pl-solve-once! pl-s-empty-db (pl-s-goal "nl" {}) (pl-mk-trail))
+    pl-output-buffer)
+  "\n")
+
+(pl-s-test!
+  "write(42) outputs digits"
+  (begin
+    (pl-output-clear!)
+    (pl-solve-once!
+      pl-s-empty-db
+      (pl-s-goal "write(42)" {})
+      (pl-mk-trail))
+    pl-output-buffer)
+  "42")
+
+(pl-s-test!
+  "write(foo(a, b)) formats compound"
+  (begin
+    (pl-output-clear!)
+    (pl-solve-once!
+      pl-s-empty-db
+      (pl-s-goal "write(foo(a, b))" {})
+      (pl-mk-trail))
+    pl-output-buffer)
+  "foo(a, b)")
+
+(pl-s-test!
+  "write conjunction"
+  (begin
+    (pl-output-clear!)
+    (pl-solve-once!
+      pl-s-empty-db
+      (pl-s-goal "write(a), write(b)" {})
+      (pl-mk-trail))
+    pl-output-buffer)
+  "ab")
+
+(pl-s-test!
+  "write of bound var walks binding"
+  (begin
+    (pl-output-clear!)
+    (pl-solve-once!
+      pl-s-empty-db
+      (pl-s-goal "=(X, hello), write(X)" {})
+      (pl-mk-trail))
+    pl-output-buffer)
+  "hello")
+
+(pl-s-test!
+  "write then nl"
+  (begin
+    (pl-output-clear!)
+    (pl-solve-once!
+      pl-s-empty-db
+      (pl-s-goal "write(hi), nl" {})
+      (pl-mk-trail))
+    pl-output-buffer)
+  "hi\n")
+
+(define pl-s-env-arith1 {})
+
+(pl-solve-once!
+  pl-s-empty-db
+  (pl-s-goal "is(X, 42)" pl-s-env-arith1)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "is(X, 42) binds X to 42"
+  (pl-num-val (pl-walk-deep (dict-get pl-s-env-arith1 "X")))
+  42)
+
+(define pl-s-env-arith2 {})
+
+(pl-solve-once!
+  pl-s-empty-db
+  (pl-s-goal "is(X, +(2, 3))" pl-s-env-arith2)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "is(X, +(2, 3)) binds X to 5"
+  (pl-num-val (pl-walk-deep (dict-get pl-s-env-arith2 "X")))
+  5)
+
+(define pl-s-env-arith3 {})
+
+(pl-solve-once!
+  pl-s-empty-db
+  (pl-s-goal "is(X, *(2, 3))" pl-s-env-arith3)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "is(X, *(2, 3)) binds X to 6"
+  (pl-num-val (pl-walk-deep (dict-get pl-s-env-arith3 "X")))
+  6)
+
+(define pl-s-env-arith4 {})
+
+(pl-solve-once!
+  pl-s-empty-db
+  (pl-s-goal "is(X, -(10, 3))" pl-s-env-arith4)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "is(X, -(10, 3)) binds X to 7"
+  (pl-num-val (pl-walk-deep (dict-get pl-s-env-arith4 "X")))
+  7)
+
+(define pl-s-env-arith5 {})
+
+(pl-solve-once!
+  pl-s-empty-db
+  (pl-s-goal "is(X, /(10, 2))" pl-s-env-arith5)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "is(X, /(10, 2)) binds X to 5"
+  (pl-num-val (pl-walk-deep (dict-get pl-s-env-arith5 "X")))
+  5)
+
+(define pl-s-env-arith6 {})
+
+(pl-solve-once!
+  pl-s-empty-db
+  (pl-s-goal "is(X, mod(10, 3))" pl-s-env-arith6)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "is(X, mod(10, 3)) binds X to 1"
+  (pl-num-val (pl-walk-deep (dict-get pl-s-env-arith6 "X")))
+  1)
+
+(define pl-s-env-arith7 {})
+
+(pl-solve-once!
+  pl-s-empty-db
+  (pl-s-goal "is(X, abs(-(0, 5)))" pl-s-env-arith7)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "is(X, abs(-(0, 5))) binds X to 5"
+  (pl-num-val (pl-walk-deep (dict-get pl-s-env-arith7 "X")))
+  5)
+
+(define pl-s-env-arith8 {})
+
+(pl-solve-once!
+  pl-s-empty-db
+  (pl-s-goal "is(X, +(2, *(3, 4)))" pl-s-env-arith8)
+  (pl-mk-trail))
+
+(pl-s-test!
+  "is(X, +(2, *(3, 4))) binds X to 14 (nested)"
+  (pl-num-val (pl-walk-deep (dict-get pl-s-env-arith8 "X")))
+  14)
+
+(pl-s-test!
+  "is(5, +(2, 3)) succeeds (LHS num matches)"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "is(5, +(2, 3))" {})
+    (pl-mk-trail))
+  true)
+
+(pl-s-test!
+  "is(6, +(2, 3)) fails (LHS num mismatch)"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "is(6, +(2, 3))" {})
+    (pl-mk-trail))
+  false)
+
+(pl-s-test!
+  "is propagates bound vars on RHS"
+  (pl-solve-once!
+    pl-s-empty-db
+    (pl-s-goal "=(Y, 4), is(X, +(Y, 1)), =(X, 5)" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-solve-tests-run! (fn () {:failed pl-s-test-fail :passed pl-s-test-pass :total pl-s-test-count :failures pl-s-test-failures}))

lib/prolog/tests/string_agg.sx

@@ -0,0 +1,273 @@
+;; lib/prolog/tests/string_agg.sx -- sub_atom/5 + aggregate_all/3
+
+(define pl-sa-test-count 0)
+(define pl-sa-test-pass 0)
+(define pl-sa-test-fail 0)
+(define pl-sa-test-failures (list))
+
+(define
+  pl-sa-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-sa-test-count (+ pl-sa-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-sa-test-pass (+ pl-sa-test-pass 1))
+        (begin
+          (set! pl-sa-test-fail (+ pl-sa-test-fail 1))
+          (append!
+            pl-sa-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-sa-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-sa-db (pl-mk-db))
+
+(define
+  pl-sa-num-val
+  (fn (env key) (pl-num-val (pl-walk-deep (dict-get env key)))))
+
+(define
+  pl-sa-list-to-atoms
+  (fn
+    (t)
+    (let
+      ((w (pl-walk-deep t)))
+      (cond
+        ((and (pl-atom? w) (= (pl-atom-name w) "[]")) (list))
+        ((and (pl-compound? w) (= (pl-fun w) ".") (= (len (pl-args w)) 2))
+          (cons
+            (pl-atom-name (first (pl-args w)))
+            (pl-sa-list-to-atoms (nth (pl-args w) 1))))
+        (true (list))))))
+
+(define pl-sa-prog-src "member(X, [X|_]). member(X, [_|T]) :- member(X, T).")
+(pl-db-load! pl-sa-db (pl-parse pl-sa-prog-src))
+
+;; -- sub_atom/5 --
+
+(pl-sa-test!
+  "sub_atom ground: sub_atom(abcde,0,3,2,abc)"
+  (pl-solve-once!
+    pl-sa-db
+    (pl-sa-goal "sub_atom(abcde, 0, 3, 2, abc)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-sa-test!
+  "sub_atom ground: sub_atom(abcde,2,2,1,cd)"
+  (pl-solve-once!
+    pl-sa-db
+    (pl-sa-goal "sub_atom(abcde, 2, 2, 1, cd)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-sa-test!
+  "sub_atom ground mismatch fails"
+  (pl-solve-once!
+    pl-sa-db
+    (pl-sa-goal "sub_atom(abcde, 0, 2, 3, cd)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-sa-test!
+  "sub_atom empty sub at start"
+  (pl-solve-once!
+    pl-sa-db
+    (pl-sa-goal "sub_atom(abcde, 0, 0, 5, '')" {})
+    (pl-mk-trail))
+  true)
+
+(pl-sa-test!
+  "sub_atom whole string"
+  (pl-solve-once!
+    pl-sa-db
+    (pl-sa-goal "sub_atom(hello, 0, 5, 0, hello)" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-sa-env-b1 {})
+(pl-solve-once!
+  pl-sa-db
+  (pl-sa-goal "sub_atom(abcde, B, 2, A, cd)" pl-sa-env-b1)
+  (pl-mk-trail))
+(pl-sa-test!
+  "sub_atom bound SubAtom gives B=2"
+  (pl-sa-num-val pl-sa-env-b1 "B")
+  2)
+(pl-sa-test!
+  "sub_atom bound SubAtom gives A=1"
+  (pl-sa-num-val pl-sa-env-b1 "A")
+  1)
+
+(define pl-sa-env-b2 {})
+(pl-solve-once!
+  pl-sa-db
+  (pl-sa-goal "sub_atom(hello, B, L, A, ello)" pl-sa-env-b2)
+  (pl-mk-trail))
+(pl-sa-test! "sub_atom ello: B=1" (pl-sa-num-val pl-sa-env-b2 "B") 1)
+(pl-sa-test! "sub_atom ello: L=4" (pl-sa-num-val pl-sa-env-b2 "L") 4)
+(pl-sa-test! "sub_atom ello: A=0" (pl-sa-num-val pl-sa-env-b2 "A") 0)
+
+(pl-sa-test!
+  "sub_atom ab: 6 total solutions"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-sa-db
+      (pl-sa-goal "aggregate_all(count, sub_atom(ab, _, _, _, _), N)" env)
+      (pl-mk-trail))
+    (pl-sa-num-val env "N"))
+  6)
+
+(pl-sa-test!
+  "sub_atom a: 3 total solutions"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-sa-db
+      (pl-sa-goal "aggregate_all(count, sub_atom(a, _, _, _, _), N)" env)
+      (pl-mk-trail))
+    (pl-sa-num-val env "N"))
+  3)
+
+;; -- aggregate_all/3 --
+
+(pl-sa-test!
+  "aggregate_all count member [a,b,c] = 3"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-sa-db
+      (pl-sa-goal "aggregate_all(count, member(_, [a,b,c]), N)" env)
+      (pl-mk-trail))
+    (pl-sa-num-val env "N"))
+  3)
+
+(pl-sa-test!
+  "aggregate_all count fail = 0"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-sa-db
+      (pl-sa-goal "aggregate_all(count, fail, N)" env)
+      (pl-mk-trail))
+    (pl-sa-num-val env "N"))
+  0)
+
+(pl-sa-test!
+  "aggregate_all count always succeeds"
+  (pl-solve-once!
+    pl-sa-db
+    (pl-sa-goal "aggregate_all(count, fail, _)" {})
+    (pl-mk-trail))
+  true)
+
+(define pl-sa-env-bag1 {})
+(pl-solve-once!
+  pl-sa-db
+  (pl-sa-goal "aggregate_all(bag(X), member(X, [a,b,c]), L)" pl-sa-env-bag1)
+  (pl-mk-trail))
+(pl-sa-test!
+  "aggregate_all bag [a,b,c]"
+  (pl-sa-list-to-atoms (dict-get pl-sa-env-bag1 "L"))
+  (list "a" "b" "c"))
+
+(define pl-sa-env-bag2 {})
+(pl-solve-once!
+  pl-sa-db
+  (pl-sa-goal "aggregate_all(bag(X), member(X, []), L)" pl-sa-env-bag2)
+  (pl-mk-trail))
+(pl-sa-test!
+  "aggregate_all bag empty goal = []"
+  (pl-sa-list-to-atoms (dict-get pl-sa-env-bag2 "L"))
+  (list))
+
+(pl-sa-test!
+  "aggregate_all sum [1,2,3,4] = 10"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-sa-db
+      (pl-sa-goal "aggregate_all(sum(X), member(X, [1,2,3,4]), S)" env)
+      (pl-mk-trail))
+    (pl-sa-num-val env "S"))
+  10)
+
+(pl-sa-test!
+  "aggregate_all max [3,1,4,1,5,9,2,6] = 9"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-sa-db
+      (pl-sa-goal "aggregate_all(max(X), member(X, [3,1,4,1,5,9,2,6]), M)" env)
+      (pl-mk-trail))
+    (pl-sa-num-val env "M"))
+  9)
+
+(pl-sa-test!
+  "aggregate_all max empty fails"
+  (pl-solve-once!
+    pl-sa-db
+    (pl-sa-goal "aggregate_all(max(X), member(X, []), M)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-sa-test!
+  "aggregate_all min [3,1,4,1,5,9,2,6] = 1"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-sa-db
+      (pl-sa-goal "aggregate_all(min(X), member(X, [3,1,4,1,5,9,2,6]), M)" env)
+      (pl-mk-trail))
+    (pl-sa-num-val env "M"))
+  1)
+
+(pl-sa-test!
+  "aggregate_all min empty fails"
+  (pl-solve-once!
+    pl-sa-db
+    (pl-sa-goal "aggregate_all(min(X), member(X, []), M)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-sa-env-set1 {})
+(pl-solve-once!
+  pl-sa-db
+  (pl-sa-goal
+    "aggregate_all(set(X), member(X, [b,a,c,a,b]), S)"
+    pl-sa-env-set1)
+  (pl-mk-trail))
+(pl-sa-test!
+  "aggregate_all set [b,a,c,a,b] = [a,b,c]"
+  (pl-sa-list-to-atoms (dict-get pl-sa-env-set1 "S"))
+  (list "a" "b" "c"))
+
+(define pl-sa-env-set2 {})
+(pl-solve-once!
+  pl-sa-db
+  (pl-sa-goal "aggregate_all(set(X), fail, S)" pl-sa-env-set2)
+  (pl-mk-trail))
+(pl-sa-test!
+  "aggregate_all set fail = []"
+  (pl-sa-list-to-atoms (dict-get pl-sa-env-set2 "S"))
+  (list))
+
+(pl-sa-test!
+  "aggregate_all sum empty = 0"
+  (let
+    ((env {}))
+    (pl-solve-once!
+      pl-sa-db
+      (pl-sa-goal "aggregate_all(sum(X), fail, S)" env)
+      (pl-mk-trail))
+    (pl-sa-num-val env "S"))
+  0)
+
+(define pl-string-agg-tests-run! (fn () {:failed pl-sa-test-fail :passed pl-sa-test-pass :total pl-sa-test-count :failures pl-sa-test-failures}))

lib/prolog/tests/term_inspect.sx

@@ -0,0 +1,147 @@
+;; lib/prolog/tests/term_inspect.sx — copy_term/2, functor/3, arg/3.
+
+(define pl-tt-test-count 0)
+(define pl-tt-test-pass 0)
+(define pl-tt-test-fail 0)
+(define pl-tt-test-failures (list))
+
+(define
+  pl-tt-test!
+  (fn
+    (name got expected)
+    (begin
+      (set! pl-tt-test-count (+ pl-tt-test-count 1))
+      (if
+        (= got expected)
+        (set! pl-tt-test-pass (+ pl-tt-test-pass 1))
+        (begin
+          (set! pl-tt-test-fail (+ pl-tt-test-fail 1))
+          (append!
+            pl-tt-test-failures
+            (str name "\n    expected: " expected "\n    got:      " got)))))))
+
+(define
+  pl-tt-goal
+  (fn
+    (src env)
+    (pl-instantiate (nth (first (pl-parse (str "g :- " src "."))) 2) env)))
+
+(define pl-tt-db (pl-mk-db))
+
+;; ── copy_term/2 ──
+
+(pl-tt-test!
+  "copy_term ground compound succeeds + copy = original"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "copy_term(foo(a, b), X), X = foo(a, b)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-tt-test!
+  "copy_term preserves var aliasing in source"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "copy_term(p(Y, Y), p(A, B)), A = 5, B = 5" {})
+    (pl-mk-trail))
+  true)
+
+(pl-tt-test!
+  "copy_term distinct vars stay distinct"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "copy_term(p(Y, Y), p(A, B)), A = 5, B = 6" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-tt-env-1 {})
+(pl-solve-once!
+  pl-tt-db
+  (pl-tt-goal "copy_term(X, Y), Y = 5" pl-tt-env-1)
+  (pl-mk-trail))
+(pl-tt-test!
+  "copy_term: binding the copy doesn't bind the source"
+  (pl-var-bound? (dict-get pl-tt-env-1 "X"))
+  false)
+
+;; ── functor/3 ──
+
+(define pl-tt-env-2 {})
+(pl-solve-once!
+  pl-tt-db
+  (pl-tt-goal "functor(foo(a, b, c), F, N)" pl-tt-env-2)
+  (pl-mk-trail))
+(pl-tt-test!
+  "functor of compound: F = foo"
+  (pl-atom-name (pl-walk-deep (dict-get pl-tt-env-2 "F")))
+  "foo")
+(pl-tt-test!
+  "functor of compound: N = 3"
+  (pl-num-val (pl-walk-deep (dict-get pl-tt-env-2 "N")))
+  3)
+
+(define pl-tt-env-3 {})
+(pl-solve-once!
+  pl-tt-db
+  (pl-tt-goal "functor(hello, F, N)" pl-tt-env-3)
+  (pl-mk-trail))
+(pl-tt-test!
+  "functor of atom: F = hello"
+  (pl-atom-name (pl-walk-deep (dict-get pl-tt-env-3 "F")))
+  "hello")
+(pl-tt-test!
+  "functor of atom: N = 0"
+  (pl-num-val (pl-walk-deep (dict-get pl-tt-env-3 "N")))
+  0)
+
+(pl-tt-test!
+  "functor construct compound: T unifies with foo(a, b)"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "functor(T, foo, 2), T = foo(a, b)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-tt-test!
+  "functor construct atom: T = hello"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "functor(T, hello, 0), T = hello" {})
+    (pl-mk-trail))
+  true)
+
+;; ── arg/3 ──
+
+(pl-tt-test!
+  "arg(1, foo(a, b, c), a)"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "arg(1, foo(a, b, c), a)" {})
+    (pl-mk-trail))
+  true)
+
+(pl-tt-test!
+  "arg(2, foo(a, b, c), X) → X = b"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "arg(2, foo(a, b, c), X), X = b" {})
+    (pl-mk-trail))
+  true)
+
+(pl-tt-test!
+  "arg out-of-range high fails"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "arg(4, foo(a, b, c), X)" {})
+    (pl-mk-trail))
+  false)
+
+(pl-tt-test!
+  "arg(0, ...) fails (1-indexed)"
+  (pl-solve-once!
+    pl-tt-db
+    (pl-tt-goal "arg(0, foo(a), X)" {})
+    (pl-mk-trail))
+  false)
+
+(define pl-term-inspect-tests-run! (fn () {:failed pl-tt-test-fail :passed pl-tt-test-pass :total pl-tt-test-count :failures pl-tt-test-failures}))