OCaml bootstrapper Phase 2: HTML renderer, SX server, Python bridge

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-03-15 23:28:48 +00:00
parent 16fa813d6d
commit 313f7d6be1
18 changed files with 2541 additions and 191 deletions

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@@ -13,6 +13,8 @@ services:
ENVIRONMENT: development
RELOAD: "true"
SX_USE_REF: "1"
SX_USE_OCAML: "1"
SX_OCAML_BIN: "/app/bin/sx_server"
SX_BOUNDARY_STRICT: "1"
SX_DEV: "1"
volumes:
@@ -26,6 +28,8 @@ services:
- ./sx/sx:/app/sx
- ./sx/path_setup.py:/app/path_setup.py
- ./sx/entrypoint.sh:/usr/local/bin/entrypoint.sh
# OCaml SX kernel binary (built with: cd hosts/ocaml && eval $(opam env) && dune build)
- ./hosts/ocaml/_build/default/bin/sx_server.exe:/app/bin/sx_server:ro
- ./sx/__init__.py:/app/__init__.py:ro
# sibling models for cross-domain SQLAlchemy imports
- ./blog/__init__.py:/app/blog/__init__.py:ro

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@@ -0,0 +1,36 @@
module T = Sx.Sx_types
module P = Sx.Sx_parser
module R = Sx.Sx_ref
open T
let () =
let env = T.make_env () in
let eval src =
let exprs = P.parse_all src in
let result = ref Nil in
List.iter (fun e -> result := R.eval_expr e (Env env)) exprs;
!result
in
(* Test 1: basic set! in closure *)
let r = eval "(let ((x 0)) (set! x 42) x)" in
Printf.printf "basic set!: %s (expect 42)\n%!" (T.inspect r);
(* Test 2: set! through lambda call *)
let r = eval "(let ((x 0)) (let ((f (fn () (set! x 99)))) (f) x))" in
Printf.printf "set! via lambda: %s (expect 99)\n%!" (T.inspect r);
(* Test 3: counter pattern *)
let r = eval "(do (define make-counter (fn () (let ((c 0)) (fn () (set! c (+ c 1)) c)))) (let ((counter (make-counter))) (counter) (counter) (counter)))" in
Printf.printf "counter: %s (expect 3)\n%!" (T.inspect r);
(* Test 4: set! in for-each *)
let r = eval "(let ((total 0)) (for-each (fn (n) (set! total (+ total n))) (list 1 2 3 4 5)) total)" in
Printf.printf "set! in for-each: %s (expect 15)\n%!" (T.inspect r);
(* Test 5: append! in for-each *)
ignore (T.env_bind env "append!" (NativeFn ("append!", fun args ->
match args with
| [List items; v] -> List (items @ [v])
| _ -> raise (Eval_error "append!: expected list and value"))));
let r = eval "(let ((log (list))) (for-each (fn (x) (append! log x)) (list 1 2 3)) log)" in
Printf.printf "append! in for-each: %s (expect (1 2 3))\n%!" (T.inspect r)

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@@ -1,3 +1,3 @@
(executable
(name run_tests)
(executables
(names run_tests debug_set sx_server)
(libraries sx))

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@@ -0,0 +1 @@
(executable (name debug_macro) (libraries sx))

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@@ -1,102 +1,539 @@
(** Minimal test runner — verifies the OCaml foundation (types, parser, primitives).
(** Test runner — runs the SX spec test suite against the transpiled CEK evaluator.
Eventually this will load test-framework.sx and run the full spec test
suite against the transpiled evaluator. For now it exercises the parser
and primitives directly. *)
Provides the 5 platform functions required by test-framework.sx:
try-call, report-pass, report-fail, push-suite, pop-suite
open Sx.Sx_types
open Sx.Sx_parser
open Sx.Sx_primitives
Plus test helpers: sx-parse, cek-eval, env-*, equal?, etc.
Usage:
dune exec bin/run_tests.exe # foundation + spec tests
dune exec bin/run_tests.exe -- test-primitives # specific test
dune exec bin/run_tests.exe -- --foundation # foundation only *)
module Sx_types = Sx.Sx_types
module Sx_parser = Sx.Sx_parser
module Sx_primitives = Sx.Sx_primitives
module Sx_runtime = Sx.Sx_runtime
module Sx_ref = Sx.Sx_ref
module Sx_render = Sx.Sx_render
open Sx_types
open Sx_parser
open Sx_primitives
open Sx_runtime
open Sx_ref
(* ====================================================================== *)
(* Test state *)
(* ====================================================================== *)
let pass_count = ref 0
let fail_count = ref 0
let suite_stack : string list ref = ref []
let assert_eq name expected actual =
if expected = actual then begin
incr pass_count;
Printf.printf " PASS: %s\n" name
end else begin
incr fail_count;
Printf.printf " FAIL: %s — expected %s, got %s\n" name (inspect expected) (inspect actual)
end
(* ====================================================================== *)
(* Deep equality — SX structural comparison *)
(* ====================================================================== *)
let assert_true name v =
if sx_truthy v then begin
incr pass_count;
Printf.printf " PASS: %s\n" name
end else begin
incr fail_count;
Printf.printf " FAIL: %s — expected truthy, got %s\n" name (inspect v)
end
let rec deep_equal a b =
match a, b with
| Nil, Nil -> true
| Bool a, Bool b -> a = b
| Number a, Number b -> a = b
| String a, String b -> a = b
| Symbol a, Symbol b -> a = b
| Keyword a, Keyword b -> a = b
| (List a | ListRef { contents = a }), (List b | ListRef { contents = b }) ->
List.length a = List.length b &&
List.for_all2 deep_equal a b
| Dict a, Dict b ->
let ka = Hashtbl.fold (fun k _ acc -> k :: acc) a [] in
let kb = Hashtbl.fold (fun k _ acc -> k :: acc) b [] in
List.length ka = List.length kb &&
List.for_all (fun k ->
Hashtbl.mem b k &&
deep_equal
(match Hashtbl.find_opt a k with Some v -> v | None -> Nil)
(match Hashtbl.find_opt b k with Some v -> v | None -> Nil)) ka
| Lambda _, Lambda _ -> a == b (* identity *)
| NativeFn _, NativeFn _ -> a == b
| _ -> false
let call name args =
match Hashtbl.find_opt primitives name with
| Some f -> f args
| None -> failwith ("Unknown primitive: " ^ name)
(* ====================================================================== *)
(* Build evaluator environment with test platform functions *)
(* ====================================================================== *)
let () =
let make_test_env () =
let env = Sx_types.make_env () in
let bind name fn =
ignore (Sx_types.env_bind env name (NativeFn (name, fn)))
in
(* --- 5 platform functions required by test-framework.sx --- *)
bind "try-call" (fun args ->
match args with
| [thunk] ->
(try
(* Call the thunk: it's a lambda with no params *)
let result = eval_expr (List [thunk]) (Env env) in
ignore result;
let d = Hashtbl.create 2 in
Hashtbl.replace d "ok" (Bool true);
Dict d
with
| Eval_error msg ->
let d = Hashtbl.create 2 in
Hashtbl.replace d "ok" (Bool false);
Hashtbl.replace d "error" (String msg);
Dict d
| exn ->
let d = Hashtbl.create 2 in
Hashtbl.replace d "ok" (Bool false);
Hashtbl.replace d "error" (String (Printexc.to_string exn));
Dict d)
| _ -> raise (Eval_error "try-call: expected 1 arg"));
bind "report-pass" (fun args ->
match args with
| [String name] ->
incr pass_count;
let ctx = String.concat " > " (List.rev !suite_stack) in
Printf.printf " PASS: %s > %s\n%!" ctx name;
Nil
| [v] ->
incr pass_count;
let ctx = String.concat " > " (List.rev !suite_stack) in
Printf.printf " PASS: %s > %s\n%!" ctx (Sx_types.inspect v);
Nil
| _ -> raise (Eval_error "report-pass: expected 1 arg"));
bind "report-fail" (fun args ->
match args with
| [String name; String error] ->
incr fail_count;
let ctx = String.concat " > " (List.rev !suite_stack) in
Printf.printf " FAIL: %s > %s: %s\n%!" ctx name error;
Nil
| [name_v; error_v] ->
incr fail_count;
let ctx = String.concat " > " (List.rev !suite_stack) in
Printf.printf " FAIL: %s > %s: %s\n%!" ctx
(Sx_types.value_to_string name_v)
(Sx_types.value_to_string error_v);
Nil
| _ -> raise (Eval_error "report-fail: expected 2 args"));
bind "push-suite" (fun args ->
match args with
| [String name] ->
suite_stack := name :: !suite_stack;
let indent = String.make ((List.length !suite_stack - 1) * 2) ' ' in
Printf.printf "%sSuite: %s\n%!" indent name;
Nil
| [v] ->
let name = Sx_types.value_to_string v in
suite_stack := name :: !suite_stack;
let indent = String.make ((List.length !suite_stack - 1) * 2) ' ' in
Printf.printf "%sSuite: %s\n%!" indent name;
Nil
| _ -> raise (Eval_error "push-suite: expected 1 arg"));
bind "pop-suite" (fun _args ->
suite_stack := (match !suite_stack with _ :: t -> t | [] -> []);
Nil);
(* --- Test helpers --- *)
bind "sx-parse" (fun args ->
match args with
| [String s] -> List (parse_all s)
| _ -> raise (Eval_error "sx-parse: expected string"));
bind "sx-parse-one" (fun args ->
match args with
| [String s] ->
let exprs = parse_all s in
(match exprs with e :: _ -> e | [] -> Nil)
| _ -> raise (Eval_error "sx-parse-one: expected string"));
bind "cek-eval" (fun args ->
match args with
| [String s] ->
let exprs = parse_all s in
(match exprs with
| e :: _ -> eval_expr e (Env env)
| [] -> Nil)
| _ -> raise (Eval_error "cek-eval: expected string"));
bind "eval-expr-cek" (fun args ->
match args with
| [expr; e] -> eval_expr expr e
| [expr] -> eval_expr expr (Env env)
| _ -> raise (Eval_error "eval-expr-cek: expected 1-2 args"));
bind "test-env" (fun _args -> Env (Sx_types.env_extend env));
(* --- Environment operations --- *)
bind "env-get" (fun args ->
match args with
| [Env e; String k] -> Sx_types.env_get e k
| [Env e; Keyword k] -> Sx_types.env_get e k
| _ -> raise (Eval_error "env-get: expected env and string"));
bind "env-has?" (fun args ->
match args with
| [Env e; String k] -> Bool (Sx_types.env_has e k)
| [Env e; Keyword k] -> Bool (Sx_types.env_has e k)
| _ -> raise (Eval_error "env-has?: expected env and string"));
bind "env-bind!" (fun args ->
match args with
| [Env e; String k; v] -> Sx_types.env_bind e k v
| [Env e; Keyword k; v] -> Sx_types.env_bind e k v
| _ -> raise (Eval_error "env-bind!: expected env, key, value"));
bind "env-set!" (fun args ->
match args with
| [Env e; String k; v] -> Sx_types.env_set e k v
| [Env e; Keyword k; v] -> Sx_types.env_set e k v
| _ -> raise (Eval_error "env-set!: expected env, key, value"));
bind "env-extend" (fun args ->
match args with
| [Env e] -> Env (Sx_types.env_extend e)
| _ -> raise (Eval_error "env-extend: expected env"));
bind "env-merge" (fun args ->
match args with
| [Env a; Env b] -> Env (Sx_types.env_merge a b)
| _ -> raise (Eval_error "env-merge: expected 2 envs"));
(* --- Equality --- *)
bind "equal?" (fun args ->
match args with
| [a; b] -> Bool (deep_equal a b)
| _ -> raise (Eval_error "equal?: expected 2 args"));
bind "identical?" (fun args ->
match args with
| [a; b] -> Bool (a == b)
| _ -> raise (Eval_error "identical?: expected 2 args"));
(* --- Continuation support --- *)
bind "make-continuation" (fun args ->
match args with
| [f] ->
let k v = sx_call f [v] in
Continuation (k, None)
| _ -> raise (Eval_error "make-continuation: expected 1 arg"));
bind "continuation?" (fun args ->
match args with
| [Continuation _] -> Bool true
| [_] -> Bool false
| _ -> raise (Eval_error "continuation?: expected 1 arg"));
bind "continuation-fn" (fun args ->
match args with
| [Continuation (f, _)] -> NativeFn ("continuation-fn-result", fun args ->
match args with [v] -> f v | _ -> f Nil)
| _ -> raise (Eval_error "continuation-fn: expected continuation"));
(* --- Core builtins used by test framework / test code --- *)
bind "assert" (fun args ->
match args with
| [cond] ->
if not (sx_truthy cond) then raise (Eval_error "Assertion failed");
Bool true
| [cond; String msg] ->
if not (sx_truthy cond) then raise (Eval_error ("Assertion error: " ^ msg));
Bool true
| [cond; msg] ->
if not (sx_truthy cond) then
raise (Eval_error ("Assertion error: " ^ Sx_types.value_to_string msg));
Bool true
| _ -> raise (Eval_error "assert: expected 1-2 args"));
bind "append!" (fun args ->
match args with
| [ListRef r; v] -> r := !r @ [v]; ListRef r (* mutate in place *)
| [List items; v] -> List (items @ [v]) (* immutable fallback *)
| _ -> raise (Eval_error "append!: expected list and value"));
(* --- HTML Renderer (from sx_render.ml library module) --- *)
Sx.Sx_render.setup_render_env env;
(* --- Missing primitives referenced by tests --- *)
bind "upcase" (fun args ->
match args with
| [String s] -> String (String.uppercase_ascii s)
| _ -> raise (Eval_error "upcase: expected string"));
bind "downcase" (fun args ->
match args with
| [String s] -> String (String.lowercase_ascii s)
| _ -> raise (Eval_error "downcase: expected string"));
bind "make-keyword" (fun args ->
match args with
| [String s] -> Keyword s
| _ -> raise (Eval_error "make-keyword: expected string"));
bind "string-length" (fun args ->
match args with
| [String s] -> Number (float_of_int (String.length s))
| _ -> raise (Eval_error "string-length: expected string"));
bind "dict-get" (fun args ->
match args with
| [Dict d; String k] -> Sx_types.dict_get d k
| [Dict d; Keyword k] -> Sx_types.dict_get d k
| _ -> raise (Eval_error "dict-get: expected dict and key"));
bind "apply" (fun args ->
match args with
| f :: rest ->
let all_args = match List.rev rest with
| List last :: prefix -> List.rev prefix @ last
| _ -> rest
in
sx_call f all_args
| _ -> raise (Eval_error "apply: expected function and args"));
(* --- Type system helpers (for --full tests) --- *)
bind "test-prim-types" (fun _args ->
let d = Hashtbl.create 40 in
List.iter (fun (k, v) -> Hashtbl.replace d k (String v)) [
"+", "number"; "-", "number"; "*", "number"; "/", "number";
"mod", "number"; "inc", "number"; "dec", "number";
"abs", "number"; "min", "number"; "max", "number";
"floor", "number"; "ceil", "number"; "round", "number";
"str", "string"; "upper", "string"; "lower", "string";
"trim", "string"; "join", "string"; "replace", "string";
"format", "string"; "substr", "string";
"=", "boolean"; "<", "boolean"; ">", "boolean";
"<=", "boolean"; ">=", "boolean"; "!=", "boolean";
"not", "boolean"; "nil?", "boolean"; "empty?", "boolean";
"number?", "boolean"; "string?", "boolean"; "boolean?", "boolean";
"list?", "boolean"; "dict?", "boolean"; "symbol?", "boolean";
"keyword?", "boolean"; "contains?", "boolean"; "has-key?", "boolean";
"starts-with?", "boolean"; "ends-with?", "boolean";
"len", "number"; "first", "any"; "rest", "list";
"last", "any"; "nth", "any"; "cons", "list";
"append", "list"; "concat", "list"; "reverse", "list";
"sort", "list"; "slice", "list"; "range", "list";
"flatten", "list"; "keys", "list"; "vals", "list";
"map-dict", "dict"; "assoc", "dict"; "dissoc", "dict";
"merge", "dict"; "dict", "dict";
"get", "any"; "type-of", "string";
];
Dict d);
bind "test-prim-param-types" (fun _args ->
let d = Hashtbl.create 10 in
let pos name typ =
let d2 = Hashtbl.create 2 in
Hashtbl.replace d2 "positional" (List [List [String name; String typ]]);
Hashtbl.replace d2 "rest-type" Nil;
Dict d2
in
let pos_rest name typ rt =
let d2 = Hashtbl.create 2 in
Hashtbl.replace d2 "positional" (List [List [String name; String typ]]);
Hashtbl.replace d2 "rest-type" (String rt);
Dict d2
in
Hashtbl.replace d "+" (pos_rest "a" "number" "number");
Hashtbl.replace d "-" (pos_rest "a" "number" "number");
Hashtbl.replace d "*" (pos_rest "a" "number" "number");
Hashtbl.replace d "/" (pos_rest "a" "number" "number");
Hashtbl.replace d "inc" (pos "n" "number");
Hashtbl.replace d "dec" (pos "n" "number");
Hashtbl.replace d "upper" (pos "s" "string");
Hashtbl.replace d "lower" (pos "s" "string");
Hashtbl.replace d "keys" (pos "d" "dict");
Hashtbl.replace d "vals" (pos "d" "dict");
Dict d);
(* --- Component accessors --- *)
bind "component-param-types" (fun _args -> Nil);
bind "component-set-param-types!" (fun _args -> Nil);
bind "component-params" (fun args ->
match args with
| [Component c] -> List (List.map (fun s -> String s) c.c_params)
| _ -> Nil);
bind "component-body" (fun args ->
match args with
| [Component c] -> c.c_body
| _ -> Nil);
bind "component-has-children" (fun args ->
match args with
| [Component c] -> Bool c.c_has_children
| _ -> Bool false);
bind "component-affinity" (fun args ->
match args with
| [Component c] -> String c.c_affinity
| _ -> String "auto");
(* --- Parser test helpers --- *)
bind "keyword-name" (fun args ->
match args with
| [Keyword k] -> String k
| _ -> raise (Eval_error "keyword-name: expected keyword"));
bind "symbol-name" (fun args ->
match args with
| [Symbol s] -> String s
| _ -> raise (Eval_error "symbol-name: expected symbol"));
bind "sx-serialize" (fun args ->
match args with
| [v] -> String (Sx_types.inspect v)
| _ -> raise (Eval_error "sx-serialize: expected 1 arg"));
(* --- make-symbol --- *)
bind "make-symbol" (fun args ->
match args with
| [String s] -> Symbol s
| [v] -> Symbol (Sx_types.value_to_string v)
| _ -> raise (Eval_error "make-symbol: expected 1 arg"));
(* --- CEK stepping / introspection --- *)
bind "make-cek-state" (fun args ->
match args with
| [ctrl; env'; kont] -> Sx_ref.make_cek_state ctrl env' kont
| _ -> raise (Eval_error "make-cek-state: expected 3 args"));
bind "cek-step" (fun args ->
match args with
| [state] -> Sx_ref.cek_step state
| _ -> raise (Eval_error "cek-step: expected 1 arg"));
bind "cek-phase" (fun args ->
match args with
| [state] -> Sx_ref.cek_phase state
| _ -> raise (Eval_error "cek-phase: expected 1 arg"));
bind "cek-value" (fun args ->
match args with
| [state] -> Sx_ref.cek_value state
| _ -> raise (Eval_error "cek-value: expected 1 arg"));
bind "cek-terminal?" (fun args ->
match args with
| [state] -> Sx_ref.cek_terminal_p state
| _ -> raise (Eval_error "cek-terminal?: expected 1 arg"));
bind "cek-kont" (fun args ->
match args with
| [state] -> Sx_ref.cek_kont state
| _ -> raise (Eval_error "cek-kont: expected 1 arg"));
bind "frame-type" (fun args ->
match args with
| [frame] -> Sx_ref.frame_type frame
| _ -> raise (Eval_error "frame-type: expected 1 arg"));
(* --- Strict mode --- *)
(* *strict* is a plain value in the env, mutated via env_set by set-strict! *)
ignore (Sx_types.env_bind env "*strict*" (Bool false));
ignore (Sx_types.env_bind env "*prim-param-types*" Nil);
bind "set-strict!" (fun args ->
match args with
| [v] ->
Sx_ref._strict_ref := v;
ignore (Sx_types.env_set env "*strict*" v); Nil
| _ -> raise (Eval_error "set-strict!: expected 1 arg"));
bind "set-prim-param-types!" (fun args ->
match args with
| [v] ->
Sx_ref._prim_param_types_ref := v;
ignore (Sx_types.env_set env "*prim-param-types*" v); Nil
| _ -> raise (Eval_error "set-prim-param-types!: expected 1 arg"));
bind "value-matches-type?" (fun args ->
match args with
| [v; String expected] -> Sx_ref.value_matches_type_p v (String expected)
| _ -> raise (Eval_error "value-matches-type?: expected value and type string"));
env
(* ====================================================================== *)
(* Foundation tests (direct, no evaluator) *)
(* ====================================================================== *)
let run_foundation_tests () =
Printf.printf "=== SX OCaml Foundation Tests ===\n\n";
(* --- Parser tests --- *)
let assert_eq name expected actual =
if deep_equal expected actual then begin
incr pass_count;
Printf.printf " PASS: %s\n" name
end else begin
incr fail_count;
Printf.printf " FAIL: %s — expected %s, got %s\n" name
(Sx_types.inspect expected) (Sx_types.inspect actual)
end
in
let assert_true name v =
if sx_truthy v then begin
incr pass_count;
Printf.printf " PASS: %s\n" name
end else begin
incr fail_count;
Printf.printf " FAIL: %s — expected truthy, got %s\n" name (Sx_types.inspect v)
end
in
let call name args =
match Hashtbl.find_opt primitives name with
| Some f -> f args
| None -> failwith ("Unknown primitive: " ^ name)
in
Printf.printf "Suite: parser\n";
let exprs = parse_all "42" in
assert_eq "number" (Number 42.0) (List.hd exprs);
let exprs = parse_all "\"hello\"" in
assert_eq "string" (String "hello") (List.hd exprs);
let exprs = parse_all "true" in
assert_eq "bool true" (Bool true) (List.hd exprs);
let exprs = parse_all "nil" in
assert_eq "nil" Nil (List.hd exprs);
let exprs = parse_all ":class" in
assert_eq "keyword" (Keyword "class") (List.hd exprs);
let exprs = parse_all "foo" in
assert_eq "symbol" (Symbol "foo") (List.hd exprs);
let exprs = parse_all "(+ 1 2)" in
assert_eq "list" (List [Symbol "+"; Number 1.0; Number 2.0]) (List.hd exprs);
let exprs = parse_all "(div :class \"card\" (p \"hi\"))" in
(match List.hd exprs with
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 "+"; 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" (inspect v));
let exprs = parse_all "'(1 2 3)" in
(match List.hd exprs with
| 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 [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" (inspect v));
let exprs = parse_all "{:a 1 :b 2}" in
(match List.hd exprs with
| v -> incr fail_count; Printf.printf " FAIL: quote sugar — got %s\n" (Sx_types.inspect v));
(match List.hd (parse_all "{:a 1 :b 2}") with
| 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" (inspect v));
let exprs = parse_all ";; comment\n42" in
assert_eq "comment" (Number 42.0) (List.hd exprs);
let exprs = parse_all "(fn (x) (+ x 1))" in
(match List.hd exprs with
| List [Symbol "fn"; List [Symbol "x"]; List [Symbol "+"; Symbol "x"; Number 1.0]] ->
incr pass_count; Printf.printf " PASS: fn form\n"
| v -> incr fail_count; Printf.printf " FAIL: fn form — got %s\n" (inspect v));
let exprs = parse_all "\"hello\\nworld\"" in
assert_eq "string escape" (String "hello\nworld") (List.hd exprs);
let exprs = parse_all "(1 2 3) (4 5)" in
assert_eq "multiple exprs" (Number 2.0) (Number (float_of_int (List.length exprs)));
| v -> incr fail_count; Printf.printf " FAIL: dict literal — got %s\n" (Sx_types.inspect v));
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)"))));
Printf.printf "\nSuite: primitives\n";
(* --- Primitive tests --- *)
assert_eq "+" (Number 6.0) (call "+" [Number 1.0; Number 2.0; Number 3.0]);
assert_eq "-" (Number 3.0) (call "-" [Number 5.0; Number 2.0]);
assert_eq "*" (Number 12.0) (call "*" [Number 3.0; Number 4.0]);
@@ -104,26 +541,22 @@ let () =
assert_eq "mod" (Number 1.0) (call "mod" [Number 5.0; Number 2.0]);
assert_eq "inc" (Number 6.0) (call "inc" [Number 5.0]);
assert_eq "abs" (Number 5.0) (call "abs" [Number (-5.0)]);
assert_true "=" (call "=" [Number 1.0; Number 1.0]);
assert_true "!=" (call "!=" [Number 1.0; Number 2.0]);
assert_true "<" (call "<" [Number 1.0; Number 2.0]);
assert_true ">" (call ">" [Number 2.0; Number 1.0]);
assert_true "nil?" (call "nil?" [Nil]);
assert_true "number?" (call "number?" [Number 1.0]);
assert_true "string?" (call "string?" [String "hi"]);
assert_true "list?" (call "list?" [List [Number 1.0]]);
assert_true "empty? list" (call "empty?" [List []]);
assert_true "empty? string" (call "empty?" [String ""]);
assert_eq "str" (String "hello42") (call "str" [String "hello"; Number 42.0]);
assert_eq "upper" (String "HI") (call "upper" [String "hi"]);
assert_eq "trim" (String "hi") (call "trim" [String " hi "]);
assert_eq "join" (String "a,b,c") (call "join" [String ","; List [String "a"; String "b"; String "c"]]);
assert_true "starts-with?" (call "starts-with?" [String "hello"; String "hel"]);
assert_true "contains?" (call "contains?" [List [Number 1.0; Number 2.0; Number 3.0]; Number 2.0]);
assert_eq "list" (List [Number 1.0; Number 2.0]) (call "list" [Number 1.0; Number 2.0]);
assert_eq "len" (Number 3.0) (call "len" [List [Number 1.0; Number 2.0; Number 3.0]]);
assert_eq "first" (Number 1.0) (call "first" [List [Number 1.0; Number 2.0]]);
@@ -135,43 +568,134 @@ let () =
assert_eq "reverse" (List [Number 3.0; Number 2.0; Number 1.0])
(call "reverse" [List [Number 1.0; Number 2.0; Number 3.0]]);
assert_eq "range" (List [Number 0.0; Number 1.0; Number 2.0]) (call "range" [Number 3.0]);
assert_eq "slice" (List [Number 2.0; Number 3.0]) (call "slice" [List [Number 1.0; Number 2.0; Number 3.0]; Number 1.0]);
assert_eq "slice" (List [Number 2.0; Number 3.0])
(call "slice" [List [Number 1.0; Number 2.0; Number 3.0]; Number 1.0]);
assert_eq "type-of" (String "number") (call "type-of" [Number 1.0]);
assert_eq "type-of nil" (String "nil") (call "type-of" [Nil]);
Printf.printf "\nSuite: env\n";
(* --- Environment tests --- *)
let e = make_env () in
ignore (env_bind e "x" (Number 42.0));
assert_eq "env-bind + get" (Number 42.0) (env_get e "x");
assert_true "env-has" (Bool (env_has e "x"));
let child = env_extend e in
ignore (env_bind child "y" (Number 10.0));
assert_eq "child sees parent" (Number 42.0) (env_get child "x");
assert_eq "child own binding" (Number 10.0) (env_get child "y");
ignore (env_set child "x" (Number 99.0));
assert_eq "set! walks chain" (Number 99.0) (env_get e "x");
let e = Sx_types.make_env () in
ignore (Sx_types.env_bind e "x" (Number 42.0));
assert_eq "env-bind + get" (Number 42.0) (Sx_types.env_get e "x");
assert_true "env-has" (Bool (Sx_types.env_has e "x"));
let child = Sx_types.env_extend e in
ignore (Sx_types.env_bind child "y" (Number 10.0));
assert_eq "child sees parent" (Number 42.0) (Sx_types.env_get child "x");
assert_eq "child own binding" (Number 10.0) (Sx_types.env_get child "y");
ignore (Sx_types.env_set child "x" (Number 99.0));
assert_eq "set! walks chain" (Number 99.0) (Sx_types.env_get e "x");
Printf.printf "\nSuite: types\n";
(* --- Type tests --- *)
assert_true "sx_truthy true" (Bool (sx_truthy (Bool true)));
assert_true "sx_truthy 0" (Bool (sx_truthy (Number 0.0)));
assert_true "sx_truthy \"\"" (Bool (sx_truthy (String "")));
assert_eq "not truthy nil" (Bool false) (Bool (sx_truthy Nil));
assert_eq "not truthy false" (Bool false) (Bool (sx_truthy (Bool false)));
let l = { l_params = ["x"]; l_body = Symbol "x"; l_closure = Sx_types.make_env (); l_name = None } in
assert_true "is_lambda" (Bool (Sx_types.is_lambda (Lambda l)));
ignore (Sx_types.set_lambda_name (Lambda l) "my-fn");
assert_eq "lambda name mutated" (String "my-fn") (lambda_name (Lambda l))
let l = { l_params = ["x"]; l_body = Symbol "x"; l_closure = make_env (); l_name = None } in
assert_true "is_lambda" (Bool (is_lambda (Lambda l)));
ignore (Sx.Sx_types.set_lambda_name (Lambda l) "my-fn");
assert_eq "lambda name mutated" (String "my-fn") (lambda_name (Lambda l));
(* --- Summary --- *)
Printf.printf "\n============================================================\n";
(* ====================================================================== *)
(* Spec test runner *)
(* ====================================================================== *)
let run_spec_tests env test_files =
(* Find project root: walk up from cwd until we find spec/tests *)
let rec find_root dir =
let candidate = Filename.concat dir "spec/tests" in
if Sys.file_exists candidate then dir
else
let parent = Filename.dirname dir in
if parent = dir then Sys.getcwd () (* reached filesystem root *)
else find_root parent
in
let project_dir = find_root (Sys.getcwd ()) in
let spec_tests_dir = Filename.concat project_dir "spec/tests" in
let framework_path = Filename.concat spec_tests_dir "test-framework.sx" in
if not (Sys.file_exists framework_path) then begin
Printf.eprintf "test-framework.sx not found at %s\n" framework_path;
Printf.eprintf "Run from the project root directory.\n";
exit 1
end;
let load_and_eval path =
let ic = open_in path in
let n = in_channel_length ic in
let s = Bytes.create n in
really_input ic s 0 n;
close_in ic;
let src = Bytes.to_string s in
let exprs = parse_all src in
List.iter (fun expr ->
ignore (eval_expr expr (Env env))
) exprs
in
Printf.printf "\nLoading test framework...\n%!";
load_and_eval framework_path;
(* Determine test files *)
let files = if test_files = [] then begin
let entries = Sys.readdir spec_tests_dir in
Array.sort String.compare entries;
let requires_full = ["test-continuations.sx"; "test-types.sx"; "test-freeze.sx";
"test-continuations-advanced.sx"; "test-signals-advanced.sx"] in
Array.to_list entries
|> List.filter (fun f ->
String.length f > 5 &&
String.sub f 0 5 = "test-" &&
Filename.check_suffix f ".sx" &&
f <> "test-framework.sx" &&
not (List.mem f requires_full))
end else
List.map (fun name ->
if Filename.check_suffix name ".sx" then name
else name ^ ".sx") test_files
in
List.iter (fun name ->
let path = Filename.concat spec_tests_dir name in
if Sys.file_exists path then begin
Printf.printf "\n%s\n" (String.make 60 '=');
Printf.printf "Running %s\n" name;
Printf.printf "%s\n%!" (String.make 60 '=');
(try
load_and_eval path
with
| Eval_error msg ->
incr fail_count;
Printf.printf " ERROR in %s: %s\n%!" name msg
| exn ->
incr fail_count;
Printf.printf " ERROR in %s: %s\n%!" name (Printexc.to_string exn))
end else
Printf.eprintf "Test file not found: %s\n" path
) files
(* ====================================================================== *)
(* Main *)
(* ====================================================================== *)
let () =
let args = Array.to_list Sys.argv |> List.tl in
let foundation_only = List.mem "--foundation" args in
let test_files = List.filter (fun a -> not (String.length a > 0 && a.[0] = '-')) args in
(* Always run foundation tests *)
run_foundation_tests ();
if not foundation_only then begin
Printf.printf "\n=== SX Spec Tests (CEK Evaluator) ===\n%!";
let env = make_test_env () in
run_spec_tests env test_files
end;
(* Summary *)
Printf.printf "\n%s\n" (String.make 60 '=');
Printf.printf "Results: %d passed, %d failed\n" !pass_count !fail_count;
Printf.printf "============================================================\n";
Printf.printf "%s\n" (String.make 60 '=');
if !fail_count > 0 then exit 1

View File

@@ -0,0 +1,427 @@
(** SX coroutine subprocess server.
Persistent process that accepts commands on stdin and writes
responses on stdout. All messages are single-line SX expressions,
newline-delimited.
Protocol:
Python → OCaml: (ping), (load path), (load-source src),
(eval src), (render src), (reset),
(io-response value)
OCaml → Python: (ready), (ok), (ok value), (error msg),
(io-request name args...)
IO primitives (query, action, request-arg, request-method, ctx)
yield (io-request ...) and block on stdin for (io-response ...). *)
module Sx_types = Sx.Sx_types
module Sx_parser = Sx.Sx_parser
module Sx_primitives = Sx.Sx_primitives
module Sx_runtime = Sx.Sx_runtime
module Sx_ref = Sx.Sx_ref
module Sx_render = Sx.Sx_render
open Sx_types
(* ====================================================================== *)
(* Output helpers *)
(* ====================================================================== *)
(** Escape a string for embedding in an SX string literal. *)
let escape_sx_string s =
let buf = Buffer.create (String.length s + 16) in
String.iter (function
| '"' -> Buffer.add_string buf "\\\""
| '\\' -> Buffer.add_string buf "\\\\"
| '\n' -> Buffer.add_string buf "\\n"
| '\r' -> Buffer.add_string buf "\\r"
| '\t' -> Buffer.add_string buf "\\t"
| c -> Buffer.add_char buf c) s;
Buffer.contents buf
(** Serialize a value to SX text (for io-request args). *)
let rec serialize_value = function
| Nil -> "nil"
| Bool true -> "true"
| Bool false -> "false"
| Number n ->
if Float.is_integer n then string_of_int (int_of_float n)
else Printf.sprintf "%g" n
| String s -> "\"" ^ escape_sx_string s ^ "\""
| Symbol s -> s
| Keyword k -> ":" ^ k
| List items | ListRef { contents = items } ->
"(list " ^ String.concat " " (List.map serialize_value items) ^ ")"
| Dict d ->
let pairs = Hashtbl.fold (fun k v acc ->
(Printf.sprintf ":%s %s" k (serialize_value v)) :: acc) d [] in
"{" ^ String.concat " " pairs ^ "}"
| RawHTML s -> "\"" ^ escape_sx_string s ^ "\""
| _ -> "nil"
let send line =
print_string line;
print_char '\n';
flush stdout
let send_ok () = send "(ok)"
let send_ok_value v = send (Printf.sprintf "(ok %s)" (serialize_value v))
let send_ok_string s = send (Printf.sprintf "(ok \"%s\")" (escape_sx_string s))
let send_error msg = send (Printf.sprintf "(error \"%s\")" (escape_sx_string msg))
(* ====================================================================== *)
(* IO bridge — primitives that yield to Python *)
(* ====================================================================== *)
(** Read a line from stdin (blocking). *)
let read_line_blocking () =
try Some (input_line stdin)
with End_of_file -> None
(** Send an io-request and block until io-response arrives. *)
let io_request name args =
let args_str = String.concat " " (List.map serialize_value args) in
send (Printf.sprintf "(io-request \"%s\" %s)" name args_str);
(* Block on stdin for io-response *)
match read_line_blocking () with
| None -> raise (Eval_error "IO bridge: stdin closed while waiting for io-response")
| Some line ->
let exprs = Sx_parser.parse_all line in
match exprs with
| [List [Symbol "io-response"; value]] -> value
| [List (Symbol "io-response" :: values)] ->
(match values with
| [v] -> v
| _ -> List values)
| _ -> raise (Eval_error ("IO bridge: unexpected response: " ^ line))
(** Bind IO primitives into the environment. *)
let setup_io_env env =
let bind name fn =
ignore (env_bind env name (NativeFn (name, fn)))
in
bind "query" (fun args ->
match args with
| service :: query_name :: rest ->
io_request "query" (service :: query_name :: rest)
| _ -> raise (Eval_error "query: expected (query service name ...)"));
bind "action" (fun args ->
match args with
| service :: action_name :: rest ->
io_request "action" (service :: action_name :: rest)
| _ -> raise (Eval_error "action: expected (action service name ...)"));
bind "request-arg" (fun args ->
match args with
| [name] -> io_request "request-arg" [name]
| _ -> raise (Eval_error "request-arg: expected 1 arg"));
bind "request-method" (fun _args ->
io_request "request-method" []);
bind "ctx" (fun args ->
match args with
| [key] -> io_request "ctx" [key]
| _ -> raise (Eval_error "ctx: expected 1 arg"))
(* ====================================================================== *)
(* Environment setup *)
(* ====================================================================== *)
let make_server_env () =
let env = make_env () in
(* Evaluator bindings — same as run_tests.ml's make_test_env,
but only the ones needed for rendering (not test helpers). *)
let bind name fn =
ignore (env_bind env name (NativeFn (name, fn)))
in
bind "assert" (fun args ->
match args with
| [cond] ->
if not (sx_truthy cond) then raise (Eval_error "Assertion failed");
Bool true
| [cond; String msg] ->
if not (sx_truthy cond) then raise (Eval_error ("Assertion error: " ^ msg));
Bool true
| [cond; msg] ->
if not (sx_truthy cond) then
raise (Eval_error ("Assertion error: " ^ value_to_string msg));
Bool true
| _ -> raise (Eval_error "assert: expected 1-2 args"));
bind "append!" (fun args ->
match args with
| [ListRef r; v] -> r := !r @ [v]; ListRef r
| [List items; v] -> List (items @ [v])
| _ -> raise (Eval_error "append!: expected list and value"));
(* HTML renderer *)
Sx_render.setup_render_env env;
(* Missing primitives that may be referenced *)
bind "upcase" (fun args ->
match args with
| [String s] -> String (String.uppercase_ascii s)
| _ -> raise (Eval_error "upcase: expected string"));
bind "downcase" (fun args ->
match args with
| [String s] -> String (String.lowercase_ascii s)
| _ -> raise (Eval_error "downcase: expected string"));
bind "make-keyword" (fun args ->
match args with
| [String s] -> Keyword s
| _ -> raise (Eval_error "make-keyword: expected string"));
bind "string-length" (fun args ->
match args with
| [String s] -> Number (float_of_int (String.length s))
| _ -> raise (Eval_error "string-length: expected string"));
bind "dict-get" (fun args ->
match args with
| [Dict d; String k] -> dict_get d k
| [Dict d; Keyword k] -> dict_get d k
| _ -> raise (Eval_error "dict-get: expected dict and key"));
bind "apply" (fun args ->
match args with
| f :: rest ->
let all_args = match List.rev rest with
| List last :: prefix -> List.rev prefix @ last
| _ -> rest
in
Sx_runtime.sx_call f all_args
| _ -> raise (Eval_error "apply: expected function and args"));
bind "equal?" (fun args ->
match args with
| [a; b] -> Bool (a = b)
| _ -> raise (Eval_error "equal?: expected 2 args"));
bind "identical?" (fun args ->
match args with
| [a; b] -> Bool (a == b)
| _ -> raise (Eval_error "identical?: expected 2 args"));
bind "make-continuation" (fun args ->
match args with
| [f] ->
let k v = Sx_runtime.sx_call f [v] in
Continuation (k, None)
| _ -> raise (Eval_error "make-continuation: expected 1 arg"));
bind "continuation?" (fun args ->
match args with
| [Continuation _] -> Bool true
| [_] -> Bool false
| _ -> raise (Eval_error "continuation?: expected 1 arg"));
bind "make-symbol" (fun args ->
match args with
| [String s] -> Symbol s
| [v] -> Symbol (value_to_string v)
| _ -> raise (Eval_error "make-symbol: expected 1 arg"));
bind "sx-serialize" (fun args ->
match args with
| [v] -> String (inspect v)
| _ -> raise (Eval_error "sx-serialize: expected 1 arg"));
(* Env operations *)
bind "env-get" (fun args ->
match args with
| [Env e; String k] -> env_get e k
| [Env e; Keyword k] -> env_get e k
| _ -> raise (Eval_error "env-get: expected env and string"));
bind "env-has?" (fun args ->
match args with
| [Env e; String k] -> Bool (env_has e k)
| [Env e; Keyword k] -> Bool (env_has e k)
| _ -> raise (Eval_error "env-has?: expected env and string"));
bind "env-bind!" (fun args ->
match args with
| [Env e; String k; v] -> env_bind e k v
| [Env e; Keyword k; v] -> env_bind e k v
| _ -> raise (Eval_error "env-bind!: expected env, key, value"));
bind "env-set!" (fun args ->
match args with
| [Env e; String k; v] -> env_set e k v
| [Env e; Keyword k; v] -> env_set e k v
| _ -> raise (Eval_error "env-set!: expected env, key, value"));
bind "env-extend" (fun args ->
match args with
| [Env e] -> Env (env_extend e)
| _ -> raise (Eval_error "env-extend: expected env"));
bind "env-merge" (fun args ->
match args with
| [Env a; Env b] -> Env (env_merge a b)
| _ -> raise (Eval_error "env-merge: expected 2 envs"));
(* Strict mode state *)
ignore (env_bind env "*strict*" (Bool false));
ignore (env_bind env "*prim-param-types*" Nil);
bind "set-strict!" (fun args ->
match args with
| [v] ->
Sx_ref._strict_ref := v;
ignore (env_set env "*strict*" v); Nil
| _ -> raise (Eval_error "set-strict!: expected 1 arg"));
bind "set-prim-param-types!" (fun args ->
match args with
| [v] ->
Sx_ref._prim_param_types_ref := v;
ignore (env_set env "*prim-param-types*" v); Nil
| _ -> raise (Eval_error "set-prim-param-types!: expected 1 arg"));
bind "component-param-types" (fun _args -> Nil);
bind "component-set-param-types!" (fun _args -> Nil);
bind "component-params" (fun args ->
match args with
| [Component c] -> List (List.map (fun s -> String s) c.c_params)
| _ -> Nil);
bind "component-body" (fun args ->
match args with
| [Component c] -> c.c_body
| _ -> Nil);
bind "component-has-children" (fun args ->
match args with
| [Component c] -> Bool c.c_has_children
| _ -> Bool false);
bind "component-affinity" (fun args ->
match args with
| [Component c] -> String c.c_affinity
| _ -> String "auto");
bind "keyword-name" (fun args ->
match args with
| [Keyword k] -> String k
| _ -> raise (Eval_error "keyword-name: expected keyword"));
bind "symbol-name" (fun args ->
match args with
| [Symbol s] -> String s
| _ -> raise (Eval_error "symbol-name: expected symbol"));
(* IO primitives *)
setup_io_env env;
env
(* ====================================================================== *)
(* Command dispatch *)
(* ====================================================================== *)
let dispatch env cmd =
match cmd with
| List [Symbol "ping"] ->
send_ok_string "ocaml-cek"
| List [Symbol "load"; String path] ->
(try
let exprs = Sx_parser.parse_file path in
let count = ref 0 in
List.iter (fun expr ->
ignore (Sx_ref.eval_expr expr (Env env));
incr count
) exprs;
send_ok_value (Number (float_of_int !count))
with
| Eval_error msg -> send_error msg
| Sys_error msg -> send_error ("File error: " ^ msg)
| exn -> send_error (Printexc.to_string exn))
| List [Symbol "load-source"; String src] ->
(try
let exprs = Sx_parser.parse_all src in
let count = ref 0 in
List.iter (fun expr ->
ignore (Sx_ref.eval_expr expr (Env env));
incr count
) exprs;
send_ok_value (Number (float_of_int !count))
with
| Eval_error msg -> send_error msg
| exn -> send_error (Printexc.to_string exn))
| List [Symbol "eval"; String src] ->
(try
let exprs = Sx_parser.parse_all src in
let result = List.fold_left (fun _acc expr ->
Sx_ref.eval_expr expr (Env env)
) Nil exprs in
send_ok_value result
with
| Eval_error msg -> send_error msg
| exn -> send_error (Printexc.to_string exn))
| List [Symbol "render"; String src] ->
(try
let exprs = Sx_parser.parse_all src in
let expr = match exprs with
| [e] -> e
| [] -> Nil
| _ -> List (Symbol "do" :: exprs)
in
let html = Sx_render.render_to_html expr env in
send_ok_string html
with
| Eval_error msg -> send_error msg
| exn -> send_error (Printexc.to_string exn))
| List [Symbol "reset"] ->
(* Clear all bindings and rebuild env.
We can't reassign env, so clear and re-populate. *)
Hashtbl.clear env.bindings;
let fresh = make_server_env () in
Hashtbl.iter (fun k v -> Hashtbl.replace env.bindings k v) fresh.bindings;
send_ok ()
| _ ->
send_error ("Unknown command: " ^ inspect cmd)
(* ====================================================================== *)
(* Main loop *)
(* ====================================================================== *)
let () =
let env = make_server_env () in
send "(ready)";
(* Main command loop *)
try
while true do
match read_line_blocking () with
| None -> exit 0 (* stdin closed *)
| Some line ->
let line = String.trim line in
if line = "" then () (* skip blank lines *)
else begin
let exprs = Sx_parser.parse_all line in
match exprs with
| [cmd] -> dispatch env cmd
| _ -> send_error ("Expected single command, got " ^ string_of_int (List.length exprs))
end
done
with
| End_of_file -> ()

View File

@@ -22,7 +22,7 @@ let skip_whitespace_and_comments s =
let rec go () =
if at_end s then ()
else match s.src.[s.pos] with
| ' ' | '\t' | '\n' | '\r' | ',' -> advance s; go ()
| ' ' | '\t' | '\n' | '\r' -> advance s; go ()
| ';' ->
while s.pos < s.len && s.src.[s.pos] <> '\n' do advance s done;
if s.pos < s.len then advance s;
@@ -63,6 +63,7 @@ let read_string s =
let ubuf = Buffer.create 4 in
Buffer.add_utf_8_uchar ubuf (Uchar.of_int code);
Buffer.add_string buf (Buffer.contents ubuf)
| '`' -> Buffer.add_char buf '`'
| _ -> Buffer.add_char buf '\\'; Buffer.add_char buf esc);
go ()
end else begin
@@ -91,6 +92,30 @@ 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] = ';' ->
(* Datum comment: #; discards next expression *)
advance s; advance s;
ignore (read_value s);
read_value s
| '#' when s.pos + 1 < s.len && s.src.[s.pos + 1] = '\'' ->
(* Quote shorthand: #'expr -> (quote expr) *)
advance s; advance s;
List [Symbol "quote"; read_value s]
| '#' when s.pos + 1 < s.len && s.src.[s.pos + 1] = '|' ->
(* Raw string: #|...| — ends at next | *)
advance s; advance s;
let buf = Buffer.create 64 in
let rec go () =
if at_end s then raise (Parse_error "Unterminated raw string");
let c = s.src.[s.pos] in
advance s;
if c = '|' then
String (Buffer.contents buf)
else begin
Buffer.add_char buf c;
go ()
end
in go ()
| '~' when s.pos + 1 < s.len && s.src.[s.pos + 1] = '@' ->
advance s; advance s; (* skip ~@ *)
List [Symbol "splice-unquote"; read_value s]

View File

@@ -20,6 +20,10 @@ let get_primitive name =
let as_number = function
| Number n -> n
| Bool true -> 1.0
| Bool false -> 0.0
| Nil -> 0.0
| String s -> (match float_of_string_opt s with Some n -> n | None -> Float.nan)
| v -> raise (Eval_error ("Expected number, got " ^ type_of v))
let as_string = function
@@ -28,6 +32,8 @@ let as_string = function
let as_list = function
| List l -> l
| ListRef r -> !r
| Nil -> []
| v -> raise (Eval_error ("Expected list, got " ^ type_of v))
let as_bool = function
@@ -116,18 +122,40 @@ let () =
| _ -> Nil);
(* === Comparison === *)
(* Normalize ListRef to List for structural equality *)
let rec normalize_for_eq = function
| ListRef { contents = items } -> List (List.map normalize_for_eq items)
| List items -> List (List.map normalize_for_eq items)
| v -> v
in
register "=" (fun args ->
match args with [a; b] -> Bool (a = b) | _ -> raise (Eval_error "=: 2 args"));
match args with
| [a; b] -> Bool (normalize_for_eq a = normalize_for_eq b)
| _ -> raise (Eval_error "=: 2 args"));
register "!=" (fun args ->
match args with [a; b] -> Bool (a <> b) | _ -> raise (Eval_error "!=: 2 args"));
match args with
| [a; b] -> Bool (normalize_for_eq a <> normalize_for_eq b)
| _ -> raise (Eval_error "!=: 2 args"));
register "<" (fun args ->
match args with [a; b] -> Bool (as_number a < as_number b) | _ -> raise (Eval_error "<: 2 args"));
match args with
| [String a; String b] -> Bool (a < b)
| [a; b] -> Bool (as_number a < as_number b)
| _ -> raise (Eval_error "<: 2 args"));
register ">" (fun args ->
match args with [a; b] -> Bool (as_number a > as_number b) | _ -> raise (Eval_error ">: 2 args"));
match args with
| [String a; String b] -> Bool (a > b)
| [a; b] -> Bool (as_number a > as_number b)
| _ -> raise (Eval_error ">: 2 args"));
register "<=" (fun args ->
match args with [a; b] -> Bool (as_number a <= as_number b) | _ -> raise (Eval_error "<=: 2 args"));
match args with
| [String a; String b] -> Bool (a <= b)
| [a; b] -> Bool (as_number a <= as_number b)
| _ -> raise (Eval_error "<=: 2 args"));
register ">=" (fun args ->
match args with [a; b] -> Bool (as_number a >= as_number b) | _ -> raise (Eval_error ">=: 2 args"));
match args with
| [String a; String b] -> Bool (a >= b)
| [a; b] -> Bool (as_number a >= as_number b)
| _ -> raise (Eval_error ">=: 2 args"));
(* === Logic === *)
register "not" (fun args ->
@@ -143,7 +171,7 @@ let () =
register "boolean?" (fun args ->
match args with [Bool _] -> Bool true | [_] -> Bool false | _ -> raise (Eval_error "boolean?: 1 arg"));
register "list?" (fun args ->
match args with [List _] -> Bool true | [_] -> Bool false | _ -> raise (Eval_error "list?: 1 arg"));
match args with [List _] | [ListRef _] -> Bool true | [_] -> Bool false | _ -> raise (Eval_error "list?: 1 arg"));
register "dict?" (fun args ->
match args with [Dict _] -> Bool true | [_] -> Bool false | _ -> raise (Eval_error "dict?: 1 arg"));
register "symbol?" (fun args ->
@@ -152,7 +180,8 @@ let () =
match args with [Keyword _] -> Bool true | [_] -> Bool false | _ -> raise (Eval_error "keyword?: 1 arg"));
register "empty?" (fun args ->
match args with
| [List []] -> Bool true | [List _] -> Bool false
| [List []] | [ListRef { contents = [] }] -> Bool true
| [List _] | [ListRef _] -> Bool false
| [String ""] -> Bool true | [String _] -> Bool false
| [Dict d] -> Bool (Hashtbl.length d = 0)
| [Nil] -> Bool true
@@ -240,7 +269,8 @@ let () =
| _ -> raise (Eval_error "split: 2 args"));
register "join" (fun args ->
match args with
| [String sep; List items] -> String (String.concat sep (List.map to_string items))
| [String sep; (List items | ListRef { contents = items })] ->
String (String.concat sep (List.map to_string items))
| _ -> raise (Eval_error "join: 2 args"));
register "replace" (fun args ->
match args with
@@ -271,48 +301,58 @@ let () =
| _ -> raise (Eval_error "char-from-code: 1 arg"));
(* === Collections === *)
register "list" (fun args -> List args);
register "list" (fun args -> ListRef (ref args));
register "len" (fun args ->
match args with
| [List l] -> Number (float_of_int (List.length l))
| [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
| _ -> raise (Eval_error "len: 1 arg"));
register "first" (fun args ->
match args with
| [List (x :: _)] -> x | [List []] -> Nil
| [List (x :: _)] | [ListRef { contents = x :: _ }] -> x
| [List []] | [ListRef { contents = [] }] -> Nil | [Nil] -> Nil
| _ -> raise (Eval_error "first: 1 list arg"));
register "rest" (fun args ->
match args with
| [List (_ :: xs)] -> List xs | [List []] -> List []
| [List (_ :: xs)] | [ListRef { contents = _ :: xs }] -> List xs
| [List []] | [ListRef { contents = [] }] -> List [] | [Nil] -> List []
| _ -> raise (Eval_error "rest: 1 list arg"));
register "last" (fun args ->
match args with
| [List l] -> (match List.rev l with x :: _ -> x | [] -> Nil)
| [List l] | [ListRef { contents = l }] ->
(match List.rev l with x :: _ -> x | [] -> Nil)
| _ -> raise (Eval_error "last: 1 list arg"));
register "nth" (fun args ->
match args with
| [List l; Number n] -> (try List.nth l (int_of_float n) with _ -> Nil)
| [List l; Number n] | [ListRef { contents = l }; Number n] ->
(try List.nth l (int_of_float n) with _ -> Nil)
| _ -> raise (Eval_error "nth: list and number"));
register "cons" (fun args ->
match args with
| [x; List l] -> List (x :: l)
| [x; List l] | [x; ListRef { contents = l }] -> List (x :: l)
| [x; Nil] -> List [x]
| _ -> raise (Eval_error "cons: value and list"));
register "append" (fun args ->
let all = List.concat_map (fun a -> as_list a) args in
List all);
register "reverse" (fun args ->
match args with [List l] -> List (List.rev l) | _ -> raise (Eval_error "reverse: 1 list"));
match args with
| [List l] | [ListRef { contents = l }] -> List (List.rev l)
| _ -> raise (Eval_error "reverse: 1 list"));
register "flatten" (fun args ->
let rec flat = function
| List items -> List.concat_map flat items
| List items | ListRef { contents = items } -> List.concat_map flat items
| x -> [x]
in
match args with [List l] -> List (List.concat_map flat l) | _ -> raise (Eval_error "flatten: 1 list"));
match args with
| [List l] | [ListRef { contents = l }] -> List (List.concat_map flat l)
| _ -> raise (Eval_error "flatten: 1 list"));
register "concat" (fun args -> List (List.concat_map as_list args));
register "contains?" (fun args ->
match args with
| [List l; item] -> Bool (List.mem item l)
| [List l; item] | [ListRef { contents = l }; item] -> Bool (List.mem item l)
| [String s; String sub] ->
let rec find i =
if i + String.length sub > String.length s then false
@@ -329,14 +369,25 @@ let () =
let s = int_of_float start and e = int_of_float stop in
let len = max 0 (e - s) in
List (List.init len (fun i -> Number (float_of_int (s + i))))
| _ -> raise (Eval_error "range: 1-2 args"));
| [Number start; Number stop; Number step] ->
let s = start and e = stop and st = step in
if st = 0.0 then List []
else
let items = ref [] in
let i = ref s in
if st > 0.0 then
(while !i < e do items := Number !i :: !items; i := !i +. st done)
else
(while !i > e do items := Number !i :: !items; i := !i +. st done);
List (List.rev !items)
| _ -> raise (Eval_error "range: 1-3 args"));
register "slice" (fun args ->
match args with
| [List l; Number start] ->
| [(List l | ListRef { contents = l }); Number start] ->
let i = max 0 (int_of_float start) in
let rec drop n = function _ :: xs when n > 0 -> drop (n-1) xs | l -> l in
List (drop i l)
| [List l; Number start; Number end_] ->
| [(List l | ListRef { contents = l }); Number start; Number end_] ->
let i = max 0 (int_of_float start) and j = int_of_float end_ in
let len = List.length l in
let j = min j len in
@@ -358,19 +409,21 @@ let () =
| _ -> raise (Eval_error "slice: 2-3 args"));
register "sort" (fun args ->
match args with
| [List l] -> List (List.sort compare l)
| [List l] | [ListRef { contents = l }] -> List (List.sort compare l)
| _ -> raise (Eval_error "sort: 1 list"));
register "zip" (fun args ->
match args with
| [List a; List b] ->
| [a; b] ->
let la = as_list a and lb = as_list b in
let rec go l1 l2 acc = match l1, l2 with
| x :: xs, y :: ys -> go xs ys (List [x; y] :: acc)
| _ -> List.rev acc
in List (go a b [])
in List (go la lb [])
| _ -> raise (Eval_error "zip: 2 lists"));
register "zip-pairs" (fun args ->
match args with
| [List l] ->
| [v] ->
let l = as_list v in
let rec go = function
| a :: b :: rest -> List [a; b] :: go rest
| _ -> []
@@ -378,7 +431,7 @@ let () =
| _ -> raise (Eval_error "zip-pairs: 1 list"));
register "take" (fun args ->
match args with
| [List l; Number n] ->
| [(List l | ListRef { contents = l }); Number n] ->
let rec take_n i = function
| x :: xs when i > 0 -> x :: take_n (i-1) xs
| _ -> []
@@ -386,7 +439,7 @@ let () =
| _ -> raise (Eval_error "take: list and number"));
register "drop" (fun args ->
match args with
| [List l; Number n] ->
| [(List l | ListRef { contents = l }); Number n] ->
let rec drop_n i = function
| _ :: xs when i > 0 -> drop_n (i-1) xs
| l -> l
@@ -394,7 +447,7 @@ let () =
| _ -> raise (Eval_error "drop: list and number"));
register "chunk-every" (fun args ->
match args with
| [List l; Number n] ->
| [(List l | ListRef { contents = l }); Number n] ->
let size = int_of_float n in
let rec go = function
| [] -> []
@@ -412,7 +465,7 @@ let () =
| _ -> raise (Eval_error "chunk-every: list and number"));
register "unique" (fun args ->
match args with
| [List l] ->
| [(List l | ListRef { contents = l })] ->
let seen = Hashtbl.create 16 in
let result = List.filter (fun x ->
let key = inspect x in
@@ -435,7 +488,8 @@ let () =
match args with
| [Dict d; String k] -> dict_get d k
| [Dict d; Keyword k] -> dict_get d k
| [List l; Number n] -> (try List.nth l (int_of_float n) with _ -> Nil)
| [List l; Number n] | [ListRef { contents = l }; Number n] ->
(try List.nth l (int_of_float n) with _ -> Nil)
| _ -> raise (Eval_error "get: dict+key or list+index"));
register "has-key?" (fun args ->
match args with

File diff suppressed because one or more lines are too long

View File

@@ -0,0 +1,435 @@
(** HTML renderer for SX values.
Extracted from run_tests.ml — renders an SX expression tree to an
HTML string, expanding components and macros along the way.
Depends on [Sx_ref.eval_expr] for evaluating sub-expressions
during rendering (keyword arg values, conditionals, etc.). *)
open Sx_types
(* ====================================================================== *)
(* Tag / attribute registries *)
(* ====================================================================== *)
let html_tags = [
"html"; "head"; "body"; "title"; "meta"; "link"; "script"; "style"; "noscript";
"header"; "nav"; "main"; "section"; "article"; "aside"; "footer";
"h1"; "h2"; "h3"; "h4"; "h5"; "h6"; "hgroup";
"div"; "p"; "blockquote"; "pre"; "figure"; "figcaption"; "address"; "hr";
"ul"; "ol"; "li"; "dl"; "dt"; "dd"; "menu";
"a"; "span"; "em"; "strong"; "small"; "b"; "i"; "u"; "s"; "sub"; "sup";
"mark"; "del"; "ins"; "q"; "cite"; "dfn"; "abbr"; "code"; "var"; "samp";
"kbd"; "data"; "time"; "ruby"; "rt"; "rp"; "bdi"; "bdo"; "wbr"; "br";
"table"; "thead"; "tbody"; "tfoot"; "tr"; "th"; "td"; "caption"; "colgroup"; "col";
"form"; "input"; "textarea"; "select"; "option"; "optgroup"; "button"; "label";
"fieldset"; "legend"; "datalist"; "output"; "progress"; "meter";
"details"; "summary"; "dialog";
"img"; "video"; "audio"; "source"; "picture"; "canvas"; "iframe"; "embed"; "object"; "param";
"svg"; "path"; "circle"; "rect"; "line"; "polyline"; "polygon"; "ellipse";
"g"; "defs"; "use"; "text"; "tspan"; "clipPath"; "mask"; "pattern";
"linearGradient"; "radialGradient"; "stop"; "filter"; "feBlend"; "feFlood";
"feGaussianBlur"; "feOffset"; "feMerge"; "feMergeNode"; "feComposite";
"template"; "slot";
]
let void_elements = [
"area"; "base"; "br"; "col"; "embed"; "hr"; "img"; "input";
"link"; "meta"; "param"; "source"; "track"; "wbr"
]
let boolean_attrs = [
"async"; "autofocus"; "autoplay"; "checked"; "controls"; "default";
"defer"; "disabled"; "formnovalidate"; "hidden"; "inert"; "ismap";
"loop"; "multiple"; "muted"; "nomodule"; "novalidate"; "open";
"playsinline"; "readonly"; "required"; "reversed"; "selected"
]
let is_html_tag name = List.mem name html_tags
let is_void name = List.mem name void_elements
let is_boolean_attr name = List.mem name boolean_attrs
(* ====================================================================== *)
(* HTML escaping *)
(* ====================================================================== *)
let escape_html s =
let buf = Buffer.create (String.length s) in
String.iter (function
| '&' -> Buffer.add_string buf "&amp;"
| '<' -> Buffer.add_string buf "&lt;"
| '>' -> Buffer.add_string buf "&gt;"
| '"' -> Buffer.add_string buf "&quot;"
| c -> Buffer.add_char buf c) s;
Buffer.contents buf
(* ====================================================================== *)
(* Attribute rendering *)
(* ====================================================================== *)
let render_attrs attrs =
let buf = Buffer.create 64 in
Hashtbl.iter (fun k v ->
if is_boolean_attr k then begin
if sx_truthy v then begin
Buffer.add_char buf ' ';
Buffer.add_string buf k
end
end else if not (is_nil v) then begin
Buffer.add_char buf ' ';
Buffer.add_string buf k;
Buffer.add_string buf "=\"";
Buffer.add_string buf (escape_html (value_to_string v));
Buffer.add_char buf '"'
end) attrs;
Buffer.contents buf
(* ====================================================================== *)
(* HTML renderer *)
(* ====================================================================== *)
(* Forward ref — resolved at setup time *)
let render_to_html_ref : (value -> env -> string) ref =
ref (fun _expr _env -> "")
let render_to_html expr env = !render_to_html_ref expr env
let render_children children env =
String.concat "" (List.map (fun c -> render_to_html c env) children)
(** Parse keyword attrs and positional children from an element call's args.
Attrs are evaluated; children are returned UNEVALUATED for render dispatch. *)
let parse_element_args args env =
let attrs = Hashtbl.create 8 in
let children = ref [] in
let skip = ref false in
let len = List.length args in
List.iteri (fun idx arg ->
if !skip then skip := false
else match arg with
| Keyword k when idx + 1 < len ->
let v = Sx_ref.eval_expr (List.nth args (idx + 1)) (Env env) in
Hashtbl.replace attrs k v;
skip := true
| Spread pairs ->
List.iter (fun (k, v) -> Hashtbl.replace attrs k v) pairs
| _ ->
children := arg :: !children
) args;
(attrs, List.rev !children)
let render_html_element tag args env =
let (attrs, children) = parse_element_args args env in
let attr_str = render_attrs attrs in
if is_void tag then
"<" ^ tag ^ attr_str ^ " />"
else
let content = String.concat ""
(List.map (fun c -> render_to_html c env) children) in
"<" ^ tag ^ attr_str ^ ">" ^ content ^ "</" ^ tag ^ ">"
let render_component comp args env =
match comp with
| Component c ->
let kwargs = Hashtbl.create 8 in
let children_exprs = ref [] in
let skip = ref false in
let len = List.length args in
List.iteri (fun idx arg ->
if !skip then skip := false
else match arg with
| Keyword k when idx + 1 < len ->
let v = Sx_ref.eval_expr (List.nth args (idx + 1)) (Env env) in
Hashtbl.replace kwargs k v;
skip := true
| _ ->
children_exprs := arg :: !children_exprs
) args;
let children = List.rev !children_exprs in
let local = env_merge c.c_closure env in
List.iter (fun p ->
let v = match Hashtbl.find_opt kwargs p with Some v -> v | None -> Nil in
ignore (env_bind local p v)
) c.c_params;
if c.c_has_children then begin
let rendered_children = String.concat ""
(List.map (fun c -> render_to_html c env) children) in
ignore (env_bind local "children" (RawHTML rendered_children))
end;
render_to_html c.c_body local
| _ -> ""
let expand_macro (m : macro) args _env =
let local = env_extend m.m_closure in
let params = m.m_params in
let rec bind_params ps as' =
match ps, as' with
| [], rest ->
(match m.m_rest_param with
| Some rp -> ignore (env_bind local rp (List rest))
| None -> ())
| p :: ps_rest, a :: as_rest ->
ignore (env_bind local p a);
bind_params ps_rest as_rest
| _ :: _, [] ->
List.iter (fun p -> ignore (env_bind local p Nil)) (List.rev ps)
in
bind_params params args;
Sx_ref.eval_expr m.m_body (Env local)
let rec do_render_to_html (expr : value) (env : env) : string =
match expr with
| Nil -> ""
| Bool true -> "true"
| Bool false -> "false"
| Number n ->
if Float.is_integer n then string_of_int (int_of_float n)
else Printf.sprintf "%g" n
| String s -> escape_html s
| Keyword k -> escape_html k
| RawHTML s -> s
| Symbol s ->
let v = Sx_ref.eval_expr (Symbol s) (Env env) in
do_render_to_html v env
| List [] | ListRef { contents = [] } -> ""
| List (head :: args) | ListRef { contents = head :: args } ->
render_list_to_html head args env
| _ ->
let v = Sx_ref.eval_expr expr (Env env) in
do_render_to_html v env
and render_list_to_html head args env =
match head with
| Symbol "<>" ->
render_children args env
| Symbol tag when is_html_tag tag ->
render_html_element tag args env
| Symbol "if" ->
let cond_val = Sx_ref.eval_expr (List.hd args) (Env env) in
if sx_truthy cond_val then
(if List.length args > 1 then do_render_to_html (List.nth args 1) env else "")
else
(if List.length args > 2 then do_render_to_html (List.nth args 2) env else "")
| Symbol "when" ->
let cond_val = Sx_ref.eval_expr (List.hd args) (Env env) in
if sx_truthy cond_val then
String.concat "" (List.map (fun e -> do_render_to_html e env) (List.tl args))
else ""
| Symbol "cond" ->
render_cond args env
| Symbol "case" ->
let v = Sx_ref.eval_expr (List (head :: args)) (Env env) in
do_render_to_html v env
| Symbol ("let" | "let*") ->
render_let args env
| Symbol ("begin" | "do") ->
let rec go = function
| [] -> ""
| [last] -> do_render_to_html last env
| e :: rest ->
ignore (Sx_ref.eval_expr e (Env env));
go rest
in go args
| Symbol ("define" | "defcomp" | "defmacro" | "defisland") ->
ignore (Sx_ref.eval_expr (List (head :: args)) (Env env));
""
| Symbol "map" ->
render_map args env false
| Symbol "map-indexed" ->
render_map args env true
| Symbol "filter" ->
let v = Sx_ref.eval_expr (List (head :: args)) (Env env) in
do_render_to_html v env
| Symbol "for-each" ->
render_for_each args env
| Symbol name ->
(try
let v = env_get env name in
(match v with
| Component _ -> render_component v args env
| Macro m ->
let expanded = expand_macro m args env in
do_render_to_html expanded env
| _ ->
let result = Sx_ref.eval_expr (List (head :: args)) (Env env) in
do_render_to_html result env)
with Eval_error _ ->
let result = Sx_ref.eval_expr (List (head :: args)) (Env env) in
do_render_to_html result env)
| _ ->
let result = Sx_ref.eval_expr (List (head :: args)) (Env env) in
do_render_to_html result env
and render_cond args env =
let as_list = function List l | ListRef { contents = l } -> Some l | _ -> None in
let is_scheme = List.for_all (fun a -> match as_list a with
| Some items when List.length items = 2 -> true
| _ -> false) args
in
if is_scheme then begin
let rec go = function
| [] -> ""
| clause :: rest ->
(match as_list clause with
| Some [test; body] ->
let is_else = match test with
| Keyword "else" -> true
| Symbol "else" | Symbol ":else" -> true
| _ -> false
in
if is_else then do_render_to_html body env
else
let v = Sx_ref.eval_expr test (Env env) in
if sx_truthy v then do_render_to_html body env
else go rest
| _ -> "")
in go args
end else begin
let rec go = function
| [] -> ""
| [_] -> ""
| test :: body :: rest ->
let is_else = match test with
| Keyword "else" -> true
| Symbol "else" | Symbol ":else" -> true
| _ -> false
in
if is_else then do_render_to_html body env
else
let v = Sx_ref.eval_expr test (Env env) in
if sx_truthy v then do_render_to_html body env
else go rest
in go args
end
and render_let args env =
let as_list = function List l | ListRef { contents = l } -> Some l | _ -> None in
let bindings_expr = List.hd args in
let body = List.tl args in
let local = env_extend env in
let bindings = match as_list bindings_expr with Some l -> l | None -> [] in
let is_scheme = match bindings with
| (List _ :: _) | (ListRef _ :: _) -> true
| _ -> false
in
if is_scheme then
List.iter (fun b ->
match as_list b with
| Some [Symbol name; expr] | Some [String name; expr] ->
let v = Sx_ref.eval_expr expr (Env local) in
ignore (env_bind local name v)
| _ -> ()
) bindings
else begin
let rec go = function
| [] -> ()
| (Symbol name) :: expr :: rest | (String name) :: expr :: rest ->
let v = Sx_ref.eval_expr expr (Env local) in
ignore (env_bind local name v);
go rest
| _ -> ()
in go bindings
end;
let rec render_body = function
| [] -> ""
| [last] -> do_render_to_html last local
| e :: rest ->
ignore (Sx_ref.eval_expr e (Env local));
render_body rest
in render_body body
and render_map args env indexed =
let (fn_val, coll_val) = match args with
| [a; b] ->
let va = Sx_ref.eval_expr a (Env env) in
let vb = Sx_ref.eval_expr b (Env env) in
(match va, vb with
| (Lambda _ | NativeFn _), _ -> (va, vb)
| _, (Lambda _ | NativeFn _) -> (vb, va)
| _ -> (va, vb))
| _ -> (Nil, Nil)
in
let items = match coll_val with List l | ListRef { contents = l } -> l | _ -> [] in
String.concat "" (List.mapi (fun i item ->
let call_args = if indexed then [Number (float_of_int i); item] else [item] in
match fn_val with
| Lambda l ->
let local = env_extend l.l_closure in
List.iter2 (fun p a -> ignore (env_bind local p a))
l.l_params call_args;
do_render_to_html l.l_body local
| _ ->
let result = Sx_runtime.sx_call fn_val call_args in
do_render_to_html result env
) items)
and render_for_each args env =
let (fn_val, coll_val) = match args with
| [a; b] ->
let va = Sx_ref.eval_expr a (Env env) in
let vb = Sx_ref.eval_expr b (Env env) in
(match va, vb with
| (Lambda _ | NativeFn _), _ -> (va, vb)
| _, (Lambda _ | NativeFn _) -> (vb, va)
| _ -> (va, vb))
| _ -> (Nil, Nil)
in
let items = match coll_val with List l | ListRef { contents = l } -> l | _ -> [] in
String.concat "" (List.map (fun item ->
match fn_val with
| Lambda l ->
let local = env_extend l.l_closure in
List.iter2 (fun p a -> ignore (env_bind local p a))
l.l_params [item];
do_render_to_html l.l_body local
| _ ->
let result = Sx_runtime.sx_call fn_val [item] in
do_render_to_html result env
) items)
(* ====================================================================== *)
(* Setup — bind render primitives in an env and wire up the ref *)
(* ====================================================================== *)
let setup_render_env env =
render_to_html_ref := do_render_to_html;
let bind name fn =
ignore (env_bind env name (NativeFn (name, fn)))
in
bind "render-html" (fun args ->
match args with
| [String src] ->
let exprs = Sx_parser.parse_all src in
let expr = match exprs with
| [e] -> e
| [] -> Nil
| _ -> List (Symbol "do" :: exprs)
in
String (render_to_html expr env)
| [expr] ->
String (render_to_html expr env)
| [expr; Env e] ->
String (render_to_html expr e)
| _ -> String "");
bind "render-to-html" (fun args ->
match args with
| [String src] ->
let exprs = Sx_parser.parse_all src in
let expr = match exprs with
| [e] -> e
| [] -> Nil
| _ -> List (Symbol "do" :: exprs)
in
String (render_to_html expr env)
| [expr] ->
String (render_to_html expr env)
| [expr; Env e] ->
String (render_to_html expr e)
| _ -> String "")

View File

@@ -35,6 +35,7 @@ let sx_str args =
(** Convert a value to a list. *)
let sx_to_list = function
| List l -> l
| ListRef r -> !r
| Nil -> []
| v -> raise (Eval_error ("Expected list, got " ^ type_of v))
@@ -60,6 +61,7 @@ let sx_apply f args_list =
let sx_append_b lst item =
match lst with
| List items -> List (items @ [item])
| ListRef r -> r := !r @ [item]; lst (* mutate in place, return same ref *)
| _ -> raise (Eval_error ("append!: expected list, got " ^ type_of lst))
(** Mutable dict-set — set key in dict, return value. *)
@@ -74,7 +76,8 @@ let get_val container key =
match container, key with
| Dict d, String k -> dict_get d k
| Dict d, Keyword k -> dict_get d k
| List l, Number n -> (try List.nth l (int_of_float n) with _ -> Nil)
| (List l | ListRef { contents = l }), Number n ->
(try List.nth l (int_of_float n) with _ -> Nil)
| _ -> raise (Eval_error ("get: unsupported " ^ type_of container ^ " / " ^ type_of key))
(** Register get as a primitive override — transpiled code calls (get d k). *)
@@ -82,7 +85,12 @@ let () =
Sx_primitives.register "get" (fun args ->
match args with
| [c; k] -> get_val c k
| _ -> raise (Eval_error "get: 2 args"))
| [c; k; default] ->
(try
let v = get_val c k in
if v = Nil then default else v
with _ -> default)
| _ -> raise (Eval_error "get: 2-3 args"))
(* ====================================================================== *)
@@ -195,8 +203,9 @@ let sx_emit a b = prim_call "emit!" [a; b]
let sx_emitted a = prim_call "emitted" [a]
let sx_context a b = prim_call "context" [a; b]
(* Trampoline — evaluate thunks iteratively *)
let trampoline v = v (* CEK machine doesn't use tree-walk thunks *)
(* Trampoline — forward-declared in sx_ref.ml, delegates to CEK eval_expr *)
(* This is a stub; the real trampoline is wired up in sx_ref.ml after eval_expr is defined *)
let trampoline v = v
(* Value-returning type predicates — the transpiled code passes these through
sx_truthy, so they need to return Bool, not OCaml bool. *)

View File

@@ -36,6 +36,7 @@ and value =
| Spread of (string * value) list
| SxExpr of string (** Opaque SX wire-format string — aser output. *)
| Env of env (** First-class environment — used by CEK machine state dicts. *)
| ListRef of value list ref (** Mutable list — JS-style array for append! *)
(** Mutable string-keyed table (SX dicts support [dict-set!]). *)
and dict = (string, value) Hashtbl.t
@@ -117,9 +118,30 @@ let rec env_set env name v =
| None -> Hashtbl.replace env.bindings name v; Nil
let env_merge base overlay =
let e = { bindings = Hashtbl.copy base.bindings; parent = base.parent } in
Hashtbl.iter (fun k v -> Hashtbl.replace e.bindings k v) overlay.bindings;
e
(* If base and overlay are the same env (physical equality) or overlay
is a descendant of base, just extend base — no copying needed.
This prevents set! inside lambdas from modifying shadow copies. *)
if base == overlay then
{ bindings = Hashtbl.create 16; parent = Some base }
else begin
(* Check if overlay is a descendant of base *)
let rec is_descendant e depth =
if depth > 100 then false
else if e == base then true
else match e.parent with Some p -> is_descendant p (depth + 1) | None -> false
in
if is_descendant overlay 0 then
{ bindings = Hashtbl.create 16; parent = Some base }
else begin
(* General case: extend base, copy ONLY overlay bindings that don't
exist anywhere in the base chain (avoids shadowing closure bindings). *)
let e = { bindings = Hashtbl.create 16; parent = Some base } in
Hashtbl.iter (fun k v ->
if not (env_has base k) then Hashtbl.replace e.bindings k v
) overlay.bindings;
e
end
end
(** {1 Value extraction helpers} *)
@@ -131,7 +153,7 @@ let value_to_string = function
| Nil -> "" | _ -> "<value>"
let value_to_string_list = function
| List items -> List.map value_to_string items
| List items | ListRef { contents = items } -> List.map value_to_string items
| _ -> []
let value_to_bool = function
@@ -197,7 +219,7 @@ let type_of = function
| String _ -> "string"
| Symbol _ -> "symbol"
| Keyword _ -> "keyword"
| List _ -> "list"
| List _ | ListRef _ -> "list"
| Dict _ -> "dict"
| Lambda _ -> "lambda"
| Component _ -> "component"
@@ -344,7 +366,7 @@ let rec inspect = function
| String s -> Printf.sprintf "%S" s
| Symbol s -> s
| Keyword k -> ":" ^ k
| List items ->
| List items | ListRef { contents = items } ->
"(" ^ String.concat " " (List.map inspect items) ^ ")"
| Dict d ->
let pairs = Hashtbl.fold (fun k v acc ->

View File

@@ -318,6 +318,7 @@
(when (and (list? node) (not (empty? node)))
(let ((head (first node)))
(cond
;; set! targets
(and (= (type-of head) "symbol")
(= (symbol-name head) "set!")
(>= (len node) 2))
@@ -327,6 +328,15 @@
(let ((mangled (ml-mangle var-name)))
(when (not (some (fn (x) (= x mangled)) result))
(append! result mangled))))
;; append! targets — need ref wrapping just like set!
(and (= (type-of head) "symbol")
(= (symbol-name head) "append!")
(>= (len node) 2)
(= (type-of (nth node 1)) "symbol"))
(let ((var-name (symbol-name (nth node 1))))
(let ((mangled (ml-mangle var-name)))
(when (not (some (fn (x) (= x mangled)) result))
(append! result mangled))))
:else
(for-each (fn (child)
(when (list? child)
@@ -543,8 +553,16 @@
;; Mutation forms
(= op "append!")
(str "(sx_append_b " (ml-expr-inner (nth args 0) set-vars)
" " (ml-expr-inner (nth args 1) set-vars) ")")
(let ((target (nth args 0))
(item-expr (ml-expr-inner (nth args 1) set-vars)))
(if (and (= (type-of target) "symbol")
(some (fn (v) (= v (ml-mangle (symbol-name target)))) set-vars))
;; Target is a ref variable — emit ref mutation
(let ((mangled (ml-mangle (symbol-name target))))
(str "(" mangled " := sx_append_b !" mangled " " item-expr "; Nil)"))
;; Not a ref — fallback (returns new list)
(str "(sx_append_b " (ml-expr-inner target set-vars)
" " item-expr ")")))
(= op "dict-set!")
(str "(sx_dict_set_b " (ml-expr-inner (nth args 0) set-vars)

View File

@@ -31,7 +31,13 @@ from typing import Any
from .types import NIL, Component, Island, Keyword, Lambda, Macro, Symbol
from .parser import parse
import os as _os
if _os.environ.get("SX_USE_REF") == "1":
if _os.environ.get("SX_USE_OCAML") == "1":
# OCaml kernel bridge — render via persistent subprocess.
# html_render and _render_component are set up lazily since the bridge
# requires an async event loop. The sync sx() function falls back to
# the ref renderer; async callers use ocaml_bridge directly.
from .ref.sx_ref import render as html_render, render_html_component as _render_component
elif _os.environ.get("SX_USE_REF") == "1":
from .ref.sx_ref import render as html_render, render_html_component as _render_component
else:
from .html import render as html_render, _render_component
@@ -348,6 +354,12 @@ def reload_if_changed() -> None:
reload_logger.info("Reloaded %d file(s), components in %.1fms",
len(changed_files), (t1 - t0) * 1000)
# Invalidate OCaml bridge component cache so next render reloads
if _os.environ.get("SX_USE_OCAML") == "1":
from .ocaml_bridge import _bridge
if _bridge is not None:
_bridge._components_loaded = False
# Recompute render plans for all services that have pages
from .pages import _PAGE_REGISTRY, compute_page_render_plans
for svc in _PAGE_REGISTRY:
@@ -430,6 +442,9 @@ def finalize_components() -> None:
compute_all_io_refs(_COMPONENT_ENV, get_all_io_names())
_compute_component_hash()
# OCaml bridge loads components lazily on first render via
# OcamlBridge._ensure_components() — no sync needed here.
# ---------------------------------------------------------------------------
# sx() — render s-expression from Jinja template
@@ -482,7 +497,16 @@ async def sx_async(source: str, **kwargs: Any) -> str:
Use when the s-expression contains I/O nodes::
{{ sx_async('(frag "blog" "card" :slug "apple")') | safe }}
When SX_USE_OCAML=1, renders via the OCaml kernel subprocess which
yields io-requests back to Python for async fulfillment.
"""
if _os.environ.get("SX_USE_OCAML") == "1":
from .ocaml_bridge import get_bridge
bridge = await get_bridge()
ctx = dict(kwargs)
return await bridge.render(source, ctx=ctx)
from .resolver import resolve, RequestContext
env = dict(_COMPONENT_ENV)

408
shared/sx/ocaml_bridge.py Normal file
View File

@@ -0,0 +1,408 @@
"""
OCaml SX kernel ↔ Python coroutine bridge.
Manages a persistent OCaml subprocess (sx_server) that evaluates SX
expressions. When the OCaml kernel needs IO (database queries, service
calls), it yields an ``(io-request ...)`` back to Python, which fulfills
it asynchronously and sends an ``(io-response ...)`` back.
Usage::
bridge = OcamlBridge()
await bridge.start()
html = await bridge.render('(div (p "hello"))')
await bridge.stop()
"""
from __future__ import annotations
import asyncio
import logging
import os
from typing import Any
_logger = logging.getLogger("sx.ocaml")
# Default binary path — can be overridden via SX_OCAML_BIN env var
_DEFAULT_BIN = os.path.join(
os.path.dirname(__file__),
"../../hosts/ocaml/_build/default/bin/sx_server.exe",
)
class OcamlBridgeError(Exception):
"""Error from the OCaml SX kernel."""
class OcamlBridge:
"""Async bridge to a persistent OCaml SX subprocess."""
def __init__(self, binary: str | None = None):
self._binary = binary or os.environ.get("SX_OCAML_BIN") or _DEFAULT_BIN
self._proc: asyncio.subprocess.Process | None = None
self._lock = asyncio.Lock()
self._started = False
self._components_loaded = False
async def start(self) -> None:
"""Launch the OCaml subprocess and wait for (ready)."""
if self._started:
return
bin_path = os.path.abspath(self._binary)
if not os.path.isfile(bin_path):
raise FileNotFoundError(
f"OCaml SX server binary not found: {bin_path}\n"
f"Build with: cd hosts/ocaml && eval $(opam env) && dune build"
)
_logger.info("Starting OCaml SX kernel: %s", bin_path)
self._proc = await asyncio.create_subprocess_exec(
bin_path,
stdin=asyncio.subprocess.PIPE,
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.PIPE,
)
# Wait for (ready)
line = await self._readline()
if line != "(ready)":
raise OcamlBridgeError(f"Expected (ready), got: {line!r}")
self._started = True
# Verify engine identity
self._send("(ping)")
kind, engine = await self._read_response()
engine_name = engine if kind == "ok" else "unknown"
_logger.info("OCaml SX kernel ready (pid=%d, engine=%s)", self._proc.pid, engine_name)
async def stop(self) -> None:
"""Terminate the subprocess."""
if self._proc and self._proc.returncode is None:
self._proc.stdin.close()
try:
await asyncio.wait_for(self._proc.wait(), timeout=5.0)
except asyncio.TimeoutError:
self._proc.kill()
await self._proc.wait()
_logger.info("OCaml SX kernel stopped")
self._proc = None
self._started = False
async def ping(self) -> str:
"""Health check — returns engine name (e.g. 'ocaml-cek')."""
async with self._lock:
self._send("(ping)")
kind, value = await self._read_response()
return value or "" if kind == "ok" else ""
async def load(self, path: str) -> int:
"""Load an .sx file for side effects (defcomp, define, defmacro)."""
async with self._lock:
self._send(f'(load "{_escape(path)}")')
kind, value = await self._read_response()
if kind == "error":
raise OcamlBridgeError(f"load {path}: {value}")
return int(float(value)) if value else 0
async def load_source(self, source: str) -> int:
"""Evaluate SX source for side effects."""
async with self._lock:
self._send(f'(load-source "{_escape(source)}")')
kind, value = await self._read_response()
if kind == "error":
raise OcamlBridgeError(f"load-source: {value}")
return int(float(value)) if value else 0
async def eval(self, source: str) -> str:
"""Evaluate SX expression, return serialized result."""
async with self._lock:
self._send(f'(eval "{_escape(source)}")')
kind, value = await self._read_response()
if kind == "error":
raise OcamlBridgeError(f"eval: {value}")
return value or ""
async def render(
self,
source: str,
ctx: dict[str, Any] | None = None,
) -> str:
"""Render SX to HTML, handling io-requests via Python async IO."""
await self._ensure_components()
async with self._lock:
self._send(f'(render "{_escape(source)}")')
return await self._read_until_ok(ctx)
async def _ensure_components(self) -> None:
"""Load component definitions into the kernel on first use."""
if self._components_loaded:
return
self._components_loaded = True
try:
from .jinja_bridge import get_component_env, _CLIENT_LIBRARY_SOURCES
from .parser import serialize
from .types import Component, Island, Macro
env = get_component_env()
parts: list[str] = list(_CLIENT_LIBRARY_SOURCES)
for key, val in env.items():
if isinstance(val, Island):
ps = ["&key"] + list(val.params)
if val.has_children:
ps.extend(["&rest", "children"])
parts.append(f"(defisland ~{val.name} ({' '.join(ps)}) {serialize(val.body)})")
elif isinstance(val, Component):
ps = ["&key"] + list(val.params)
if val.has_children:
ps.extend(["&rest", "children"])
parts.append(f"(defcomp ~{val.name} ({' '.join(ps)}) {serialize(val.body)})")
elif isinstance(val, Macro):
ps = list(val.params)
if val.rest_param:
ps.extend(["&rest", val.rest_param])
parts.append(f"(defmacro {val.name} ({' '.join(ps)}) {serialize(val.body)})")
if parts:
source = "\n".join(parts)
await self.load_source(source)
_logger.info("Loaded %d definitions into OCaml kernel", len(parts))
except Exception as e:
_logger.error("Failed to load components into OCaml kernel: %s", e)
self._components_loaded = False # retry next time
async def reset(self) -> None:
"""Reset the kernel environment to pristine state."""
async with self._lock:
self._send("(reset)")
kind, value = await self._read_response()
if kind == "error":
raise OcamlBridgeError(f"reset: {value}")
# ------------------------------------------------------------------
# Internal protocol handling
# ------------------------------------------------------------------
def _send(self, line: str) -> None:
"""Write a line to the subprocess stdin."""
assert self._proc and self._proc.stdin
self._proc.stdin.write((line + "\n").encode())
async def _readline(self) -> str:
"""Read a line from the subprocess stdout."""
assert self._proc and self._proc.stdout
data = await self._proc.stdout.readline()
if not data:
# Process died — collect stderr for diagnostics
stderr = b""
if self._proc.stderr:
stderr = await self._proc.stderr.read()
raise OcamlBridgeError(
f"OCaml subprocess died unexpectedly. stderr: {stderr.decode(errors='replace')}"
)
return data.decode().rstrip("\n")
async def _read_response(self) -> tuple[str, str | None]:
"""Read a single (ok ...) or (error ...) response.
Returns (kind, value) where kind is "ok" or "error".
"""
line = await self._readline()
return _parse_response(line)
async def _read_until_ok(
self,
ctx: dict[str, Any] | None = None,
) -> str:
"""Read lines until (ok ...) or (error ...).
Handles (io-request ...) by fulfilling IO and sending (io-response ...).
"""
while True:
line = await self._readline()
if line.startswith("(io-request "):
result = await self._handle_io_request(line, ctx)
# Send response back to OCaml
self._send(f"(io-response {_serialize_for_ocaml(result)})")
continue
kind, value = _parse_response(line)
if kind == "error":
raise OcamlBridgeError(value or "Unknown error")
# kind == "ok"
return value or ""
async def _handle_io_request(
self,
line: str,
ctx: dict[str, Any] | None,
) -> Any:
"""Dispatch an io-request to the appropriate Python handler."""
from .parser import parse_all
# Parse the io-request
parsed = parse_all(line)
if not parsed or not isinstance(parsed[0], list):
raise OcamlBridgeError(f"Malformed io-request: {line}")
parts = parsed[0]
# parts = [Symbol("io-request"), name_str, ...args]
if len(parts) < 2:
raise OcamlBridgeError(f"Malformed io-request: {line}")
req_name = _to_str(parts[1])
args = parts[2:]
if req_name == "query":
return await self._io_query(args)
elif req_name == "action":
return await self._io_action(args)
elif req_name == "request-arg":
return self._io_request_arg(args)
elif req_name == "request-method":
return self._io_request_method()
elif req_name == "ctx":
return self._io_ctx(args, ctx)
else:
raise OcamlBridgeError(f"Unknown io-request type: {req_name}")
async def _io_query(self, args: list) -> Any:
"""Handle (io-request "query" service name params...)."""
from shared.infrastructure.internal import fetch_data
service = _to_str(args[0]) if len(args) > 0 else ""
query = _to_str(args[1]) if len(args) > 1 else ""
params = _to_dict(args[2]) if len(args) > 2 else {}
return await fetch_data(service, query, params)
async def _io_action(self, args: list) -> Any:
"""Handle (io-request "action" service name payload...)."""
from shared.infrastructure.internal import call_action
service = _to_str(args[0]) if len(args) > 0 else ""
action = _to_str(args[1]) if len(args) > 1 else ""
payload = _to_dict(args[2]) if len(args) > 2 else {}
return await call_action(service, action, payload)
def _io_request_arg(self, args: list) -> Any:
"""Handle (io-request "request-arg" name)."""
try:
from quart import request
name = _to_str(args[0]) if args else ""
return request.args.get(name)
except RuntimeError:
return None
def _io_request_method(self) -> str:
"""Handle (io-request "request-method")."""
try:
from quart import request
return request.method
except RuntimeError:
return "GET"
def _io_ctx(self, args: list, ctx: dict[str, Any] | None) -> Any:
"""Handle (io-request "ctx" key)."""
if ctx is None:
return None
key = _to_str(args[0]) if args else ""
return ctx.get(key)
# ------------------------------------------------------------------
# Module-level singleton
# ------------------------------------------------------------------
_bridge: OcamlBridge | None = None
async def get_bridge() -> OcamlBridge:
"""Get or create the singleton bridge instance."""
global _bridge
if _bridge is None:
_bridge = OcamlBridge()
if not _bridge._started:
await _bridge.start()
return _bridge
# ------------------------------------------------------------------
# Helpers
# ------------------------------------------------------------------
def _escape(s: str) -> str:
"""Escape a string for embedding in an SX string literal."""
return s.replace("\\", "\\\\").replace('"', '\\"').replace("\n", "\\n").replace("\r", "\\r").replace("\t", "\\t")
def _parse_response(line: str) -> tuple[str, str | None]:
"""Parse an (ok ...) or (error ...) response line.
Returns (kind, value) tuple.
"""
line = line.strip()
if line == "(ok)":
return ("ok", None)
if line.startswith("(ok "):
value = line[4:-1] # strip (ok and )
# If the value is a quoted string, unquote it
if value.startswith('"') and value.endswith('"'):
value = _unescape(value[1:-1])
return ("ok", value)
if line.startswith("(error "):
msg = line[7:-1]
if msg.startswith('"') and msg.endswith('"'):
msg = _unescape(msg[1:-1])
return ("error", msg)
return ("error", f"Unexpected response: {line}")
def _unescape(s: str) -> str:
"""Unescape an SX string literal."""
return (
s.replace("\\n", "\n")
.replace("\\r", "\r")
.replace("\\t", "\t")
.replace('\\"', '"')
.replace("\\\\", "\\")
)
def _to_str(val: Any) -> str:
"""Convert an SX parsed value to a Python string."""
if isinstance(val, str):
return val
if hasattr(val, "name"):
return val.name
return str(val)
def _to_dict(val: Any) -> dict:
"""Convert an SX parsed value to a Python dict."""
if isinstance(val, dict):
return val
return {}
def _serialize_for_ocaml(val: Any) -> str:
"""Serialize a Python value to SX text for sending to OCaml."""
if val is None:
return "nil"
if isinstance(val, bool):
return "true" if val else "false"
if isinstance(val, (int, float)):
if isinstance(val, float) and val == int(val):
return str(int(val))
return str(val)
if isinstance(val, str):
return f'"{_escape(val)}"'
if isinstance(val, (list, tuple)):
items = " ".join(_serialize_for_ocaml(v) for v in val)
return f"(list {items})"
if isinstance(val, dict):
pairs = " ".join(
f":{k} {_serialize_for_ocaml(v)}" for k, v in val.items()
)
return "{" + pairs + "}"
return f'"{_escape(str(val))}"'

View File

@@ -0,0 +1,220 @@
"""Tests for the OCaml SX bridge."""
import asyncio
import os
import sys
import unittest
# Add project root to path
_project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), "../../.."))
if _project_root not in sys.path:
sys.path.insert(0, _project_root)
from shared.sx.ocaml_bridge import OcamlBridge, OcamlBridgeError, _escape, _parse_response, _serialize_for_ocaml
class TestHelpers(unittest.TestCase):
"""Test helper functions (no subprocess needed)."""
def test_escape_basic(self):
self.assertEqual(_escape('hello'), 'hello')
self.assertEqual(_escape('say "hi"'), 'say \\"hi\\"')
self.assertEqual(_escape('a\\b'), 'a\\\\b')
self.assertEqual(_escape('line\nbreak'), 'line\\nbreak')
def test_parse_response_ok_empty(self):
self.assertEqual(_parse_response("(ok)"), ("ok", None))
def test_parse_response_ok_number(self):
self.assertEqual(_parse_response("(ok 3)"), ("ok", "3"))
def test_parse_response_ok_string(self):
kind, val = _parse_response('(ok "<div>hi</div>")')
self.assertEqual(kind, "ok")
self.assertEqual(val, "<div>hi</div>")
def test_parse_response_error(self):
kind, val = _parse_response('(error "something broke")')
self.assertEqual(kind, "error")
self.assertEqual(val, "something broke")
def test_serialize_none(self):
self.assertEqual(_serialize_for_ocaml(None), "nil")
def test_serialize_bool(self):
self.assertEqual(_serialize_for_ocaml(True), "true")
self.assertEqual(_serialize_for_ocaml(False), "false")
def test_serialize_number(self):
self.assertEqual(_serialize_for_ocaml(42), "42")
self.assertEqual(_serialize_for_ocaml(3.14), "3.14")
def test_serialize_string(self):
self.assertEqual(_serialize_for_ocaml("hello"), '"hello"')
self.assertEqual(_serialize_for_ocaml('say "hi"'), '"say \\"hi\\""')
def test_serialize_list(self):
self.assertEqual(_serialize_for_ocaml([1, 2, 3]), "(list 1 2 3)")
def test_serialize_dict(self):
result = _serialize_for_ocaml({"a": 1})
self.assertEqual(result, "{:a 1}")
class TestBridge(unittest.IsolatedAsyncioTestCase):
"""Integration tests — require the OCaml binary to be built."""
@classmethod
def setUpClass(cls):
# Check if binary exists
from shared.sx.ocaml_bridge import _DEFAULT_BIN
bin_path = os.path.abspath(_DEFAULT_BIN)
if not os.path.isfile(bin_path):
raise unittest.SkipTest(
f"OCaml binary not found at {bin_path}. "
f"Build with: cd hosts/ocaml && eval $(opam env) && dune build"
)
async def asyncSetUp(self):
self.bridge = OcamlBridge()
await self.bridge.start()
async def asyncTearDown(self):
await self.bridge.stop()
async def test_ping(self):
self.assertTrue(await self.bridge.ping())
async def test_eval_arithmetic(self):
result = await self.bridge.eval("(+ 1 2)")
self.assertEqual(result, "3")
async def test_eval_string(self):
result = await self.bridge.eval('(str "hello" " " "world")')
self.assertIn("hello world", result)
async def test_render_simple(self):
html = await self.bridge.render('(div (p "hello"))')
self.assertEqual(html, "<div><p>hello</p></div>")
async def test_render_attrs(self):
html = await self.bridge.render('(div :class "card" (p "hi"))')
self.assertIn('class="card"', html)
self.assertIn("<p>hi</p>", html)
async def test_render_void_element(self):
html = await self.bridge.render("(br)")
self.assertEqual(html, "<br />")
async def test_load_source_defcomp(self):
count = await self.bridge.load_source(
'(defcomp ~test-card (&key title) (div :class "card" (h2 title)))'
)
self.assertEqual(count, 1)
html = await self.bridge.render('(~test-card :title "Hello")')
self.assertIn("Hello", html)
self.assertIn("card", html)
async def test_reset(self):
await self.bridge.load_source("(define x 42)")
result = await self.bridge.eval("x")
self.assertEqual(result, "42")
await self.bridge.reset()
with self.assertRaises(OcamlBridgeError):
await self.bridge.eval("x")
async def test_render_conditional(self):
html = await self.bridge.render('(if true (p "yes") (p "no"))')
self.assertEqual(html, "<p>yes</p>")
async def test_render_let(self):
html = await self.bridge.render('(let (x "hi") (p x))')
self.assertEqual(html, "<p>hi</p>")
async def test_render_map(self):
html = await self.bridge.render(
"(map (lambda (x) (li x)) (list \"a\" \"b\" \"c\"))"
)
self.assertEqual(html, "<li>a</li><li>b</li><li>c</li>")
async def test_render_fragment(self):
html = await self.bridge.render('(<> (p "a") (p "b"))')
self.assertEqual(html, "<p>a</p><p>b</p>")
async def test_eval_error(self):
with self.assertRaises(OcamlBridgeError):
await self.bridge.eval("(undefined-symbol-xyz)")
async def test_render_component_with_children(self):
await self.bridge.load_source(
'(defcomp ~wrapper (&rest children) (div :class "wrap" children))'
)
html = await self.bridge.render('(~wrapper (p "inside"))')
self.assertIn("wrap", html)
self.assertIn("<p>inside</p>", html)
async def test_render_macro(self):
await self.bridge.load_source(
"(defmacro unless (cond &rest body) (list 'if (list 'not cond) (cons 'do body)))"
)
html = await self.bridge.render('(unless false (p "shown"))')
self.assertEqual(html, "<p>shown</p>")
# ------------------------------------------------------------------
# ListRef regression tests — the `list` primitive returns ListRef
# (mutable), not List (immutable). Macro expansions that construct
# AST via `list` produce ListRef nodes. The renderer must handle
# both List and ListRef at every structural match point.
# ------------------------------------------------------------------
async def test_render_macro_generates_cond(self):
"""Macro that programmatically builds a (cond ...) with list."""
await self.bridge.load_source(
"(defmacro pick (x) "
" (list 'cond "
" (list (list '= x 1) '(p \"one\")) "
" (list (list '= x 2) '(p \"two\")) "
" (list ':else '(p \"other\"))))"
)
html = await self.bridge.render("(pick 2)")
self.assertEqual(html, "<p>two</p>")
async def test_render_macro_generates_let(self):
"""Macro that programmatically builds a (let ...) with list."""
await self.bridge.load_source(
"(defmacro with-greeting (name &rest body) "
" (list 'let (list (list 'greeting (list 'str \"Hello \" name))) "
" (cons 'do body)))"
)
html = await self.bridge.render('(with-greeting "World" (p greeting))')
self.assertEqual(html, "<p>Hello World</p>")
async def test_render_macro_nested_html_tags(self):
"""Macro expansion containing nested HTML tags via list."""
await self.bridge.load_source(
"(defmacro card (title &rest body) "
" (list 'div ':class \"card\" "
" (list 'h2 title) "
" (cons 'do body)))"
)
html = await self.bridge.render('(card "Title" (p "content"))')
self.assertIn('<div class="card">', html)
self.assertIn("<h2>Title</h2>", html)
self.assertIn("<p>content</p>", html)
async def test_render_eval_returns_listref(self):
"""Values created at runtime via (list ...) are ListRef."""
await self.bridge.load_source(
"(define make-items (lambda () (list "
' (list "a") (list "b") (list "c"))))'
)
html = await self.bridge.render(
"(ul (map (lambda (x) (li (first x))) (make-items)))"
)
self.assertIn("<li>a</li>", html)
self.assertIn("<li>b</li>", html)
self.assertIn("<li>c</li>", html)
if __name__ == "__main__":
unittest.main()

View File

@@ -148,6 +148,21 @@ def create_app() -> "Quart":
target = path + "/" + ("?" + qs if qs else "")
return redirect(target, 301)
@app.get("/sx/_engine")
async def sx_engine_info():
"""Diagnostic: which SX engine is active."""
import os, json
info = {"engine": "python-ref", "ocaml": False}
if os.environ.get("SX_USE_OCAML") == "1":
try:
from shared.sx.ocaml_bridge import get_bridge
bridge = await get_bridge()
engine = await bridge.ping()
info = {"engine": engine, "ocaml": True, "pid": bridge._proc.pid}
except Exception as e:
info = {"engine": "ocaml-error", "ocaml": False, "error": str(e)}
return json.dumps(info), 200, {"Content-Type": "application/json"}
@app.get("/sx/")
async def sx_home():
"""SX docs home page."""

View File

@@ -231,15 +231,135 @@
(tr (td :class "pr-4 py-1" "3")
(td :class "pr-4" "Content-addressed computation")
(td :class "text-emerald-600 font-semibold" "\u2714 Done \u2014 content-hash, freeze-to-cid, thaw-from-cid"))
(tr (td :class "pr-4 py-1" "3.5")
(td :class "pr-4" "Data representations")
(td :class "text-stone-400" "Planned — byte buffers + typed structs"))
(tr (td :class "pr-4 py-1" "4")
(td :class "pr-4" "Concurrent CEK")
(td :class "text-amber-600 font-semibold" "Spec complete \u2014 implementation next"))
(td :class "text-amber-600 font-semibold" "Spec complete implementation next"))
(tr (td :class "pr-4 py-1" "5")
(td :class "pr-4" "Linear effects")
(td :class "text-stone-400" "Future")))))
;; -----------------------------------------------------------------------
;; Step 4: Concurrent CEK \u2014 deep spec
;; Step 3.5: Data Representations
;; -----------------------------------------------------------------------
(h2 :class "text-xl font-bold mt-12 mb-4" "Step 3.5: Data Representations")
(p "Two primitives that sit below concurrency but above the raw CEK machine. "
"Both are about how values are represented — enabling work that's currently host-only.")
(h3 :class "text-lg font-semibold mt-8 mb-3" "3.5a Byte Buffers")
(p "Fixed-size mutable byte arrays. A small primitive surface that unlocks "
"binary protocol parsing, image headers, wire formats, and efficient CID computation:")
(~docs/code :code
(str ";; Create and write\n"
"(let ((buf (make-buffer 256)))\n"
" (buffer-write-u8! buf 0 #xFF)\n"
" (buffer-write-u32! buf 1 magic-number)\n"
" (buffer-slice buf 0 5))\n"
"\n"
";; Read from network/file\n"
"(let ((header (buffer-slice packet 0 12)))\n"
" (case (buffer-read-u8 header 0)\n"
" (1 (parse-handshake header))\n"
" (2 (parse-data header))\n"
" (else (error \"unknown packet type\"))))"))
(p "Primitives:")
(ul :class "list-disc pl-6 mb-4 space-y-1"
(li (code "make-buffer") " — allocate N zero-filled bytes")
(li (code "buffer-read-u8/u16/u32") ", " (code "buffer-read-i8/i16/i32") " — typed reads at offset")
(li (code "buffer-write-u8!/u16!/u32!") " — typed writes at offset (big-endian default)")
(li (code "buffer-slice") " — zero-copy view of a region")
(li (code "buffer-length") " — byte count")
(li (code "buffer->list") ", " (code "list->buffer") " — conversion to/from byte lists")
(li (code "buffer->string") ", " (code "string->buffer") " — UTF-8 encode/decode"))
(p "Host mapping:")
(div :class "overflow-x-auto mb-6"
(table :class "min-w-full text-sm"
(thead (tr
(th :class "text-left pr-4 pb-2 font-semibold" "Primitive")
(th :class "text-left pr-4 pb-2 font-semibold" "JavaScript")
(th :class "text-left pr-4 pb-2 font-semibold" "Python")
(th :class "text-left pb-2 font-semibold" "OCaml")))
(tbody
(tr (td :class "pr-4 py-1 font-mono" "make-buffer")
(td :class "pr-4" "new ArrayBuffer(n)")
(td :class "pr-4" "bytearray(n)")
(td "Bytes.create n"))
(tr (td :class "pr-4 py-1 font-mono" "buffer-read-u32")
(td :class "pr-4" "DataView.getUint32")
(td :class "pr-4" "struct.unpack_from")
(td "Bytes.get_int32_be"))
(tr (td :class "pr-4 py-1 font-mono" "buffer-slice")
(td :class "pr-4" "new Uint8Array(buf, off, len)")
(td :class "pr-4" "memoryview(buf)[off:off+len]")
(td "Bytes.sub buf off len")))))
(p "Byte buffers connect directly to content addressing (Step 3). "
"Computing a CID currently requires host-side hashing of opaque SX text. "
"With buffers, the hash input can be a canonical binary representation — "
"deterministic, compact, and consistent across hosts.")
(h3 :class "text-lg font-semibold mt-8 mb-3" "3.5b Typed Structs")
(p "Named product types with fixed fields. On interpreted hosts, structs are syntactic sugar over dicts. "
"On compiled hosts (OCaml, Rust), they compile to unboxed records — no dict overhead, "
"no hash lookups, no string key comparisons:")
(~docs/code :code
(str ";; Define a struct\n"
"(defstruct point (x : number) (y : number))\n"
"\n"
";; Construct\n"
"(let ((p (make-point 3 4)))\n"
" ;; Access — compiles to field offset on native hosts\n"
" (+ (point-x p) (point-y p))) ;; => 7\n"
"\n"
";; Pattern match\n"
"(case p\n"
" ((point x y) (sqrt (+ (* x x) (* y y))))) ;; => 5"))
(p "What " (code "defstruct") " generates:")
(ul :class "list-disc pl-6 mb-4 space-y-1"
(li (code "make-point") " — constructor (arity-checked)")
(li (code "point?") " — type predicate")
(li (code "point-x") ", " (code "point-y") " — field accessors")
(li (code "point") " — case pattern for destructuring"))
(p "The performance difference matters for compiled hosts:")
(div :class "overflow-x-auto mb-6"
(table :class "min-w-full text-sm"
(thead (tr
(th :class "text-left pr-4 pb-2 font-semibold" "Operation")
(th :class "text-left pr-4 pb-2 font-semibold" "Dict (current)")
(th :class "text-left pb-2 font-semibold" "Struct (compiled)")))
(tbody
(tr (td :class "pr-4 py-1" "Field access")
(td :class "pr-4" "Hash lookup — O(1) amortized, cache-unfriendly")
(td "Offset load — O(1) actual, single instruction"))
(tr (td :class "pr-4 py-1" "Construction")
(td :class "pr-4" "Allocate hash table + insert N entries")
(td "Allocate N words, write sequentially"))
(tr (td :class "pr-4 py-1" "Pattern match")
(td :class "pr-4" "N string comparisons")
(td "Tag check + field projection")))))
(p "Typed structs connect to the gradual type system in " (code "types.sx") ". "
"A " (code "defstruct") " declaration is a type definition that the type checker can verify "
"and the compiler can exploit. On interpreted hosts, the same code runs — just slower.")
;; -----------------------------------------------------------------------
;; Step 4: Concurrent CEK — deep spec
;; -----------------------------------------------------------------------
(h2 :class "text-xl font-bold mt-12 mb-4" "Step 4: Concurrent CEK")
@@ -449,33 +569,33 @@
(th :class "text-left pr-4 pb-2 font-semibold" "Primitive")
(th :class "text-left pr-4 pb-2 font-semibold" "JavaScript")
(th :class "text-left pr-4 pb-2 font-semibold" "Python")
(th :class "text-left pr-4 pb-2 font-semibold" "Haskell")
(th :class "text-left pr-4 pb-2 font-semibold" "OCaml")
(th :class "text-left pb-2 font-semibold" "Rust/WASM")))
(tbody
(tr (td :class "pr-4 py-1 font-mono" "spawn")
(td :class "pr-4" "Web Worker")
(td :class "pr-4" "asyncio.create_task")
(td :class "pr-4" "forkIO")
(td :class "pr-4" "Eio.Fiber.fork")
(td "tokio::spawn"))
(tr (td :class "pr-4 py-1 font-mono" "channel")
(td :class "pr-4" "MessageChannel")
(td :class "pr-4" "asyncio.Queue")
(td :class "pr-4" "TChan (STM)")
(td :class "pr-4" "Eio.Stream.t")
(td "mpsc::channel"))
(tr (td :class "pr-4 py-1 font-mono" "yield!")
(td :class "pr-4" "setTimeout(0)")
(td :class "pr-4" "await asyncio.sleep(0)")
(td :class "pr-4" "threadDelay 0")
(td :class "pr-4" "Eio.Fiber.yield")
(td "tokio::task::yield_now"))
(tr (td :class "pr-4 py-1 font-mono" "freeze/thaw")
(td :class "pr-4" "postMessage + JSON")
(td :class "pr-4" "pickle / SX text")
(td :class "pr-4" "Serialise + SX text")
(td :class "pr-4" "Marshal + SX text")
(td "serde + SX text"))
(tr (td :class "pr-4 py-1 font-mono" "select")
(td :class "pr-4" "Promise.race")
(td :class "pr-4" "asyncio.wait FIRST_COMPLETED")
(td :class "pr-4" "STM orElse")
(td :class "pr-4" "Eio.Fiber.any")
(td "tokio::select!")))))
(h3 :class "text-lg font-semibold mt-8 mb-3" "4.7 Roadmap")
@@ -501,9 +621,9 @@
(td :class "pr-4" "JavaScript")
(td "Art DAG integration path"))
(tr (td :class "pr-4 py-1" "4d")
(td :class "pr-4" "Haskell bootstrapper")
(td :class "pr-4" "Haskell")
(td "Spec portability, native concurrency"))
(td :class "pr-4" "OCaml bootstrapper → native compilation")
(td :class "pr-4" "OCaml")
(td "Native performance, direct CEK-to-ML mapping"))
(tr (td :class "pr-4 py-1" "4e")
(td :class "pr-4" "Rust/WASM bootstrapper")
(td :class "pr-4" "Rust")
@@ -526,8 +646,8 @@
(td "Resource safety, exactly-once delivery")))))
(p "Each phase is independently valuable. Phase 4a (Web Worker spawn) is the immediate next build. "
"Phase 4d (Haskell) proves the spec is truly host-independent. "
"Phase 4e (Rust/WASM) proves it can be fast. "
"Phase 4d (OCaml) proves the spec compiles to native code — the CEK machine maps directly to ML's runtime model. "
"Phase 4e (Rust/WASM) proves it can run in the browser at near-native speed. "
"Phase 4g (IPFS) makes it distributed.")
;; -----------------------------------------------------------------------