phase-22 JS: stdlib.sx bitwise/Map/Set/RegExp + 25 tests
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lib/js/stdlib.sx (36 forms):
- Bitwise ops (js-bitand/bitor/bitxor/lshift/rshift/urshift/bitnot) use
  truncate instead of js-num-to-int (which calls integer /0 and crashes).
- Map class: dict-backed list-of-pairs with linear-scan find, mutable via
  dict-set!; js-map-new/get/set!/has/delete!/clear/keys/vals/entries/for-each.
- Set class: backed by SX make-set primitive; set-member?/set-add!/set-remove!
  all take (set item) argument order — fixed from (item set) which threw.
- RegExp: callable lambda wrapping js-regex-new (not a dict, so directly callable).
- Wires Map/Set/RegExp into js-global.

lib/js/test.sh: epochs 6000-6032 (25 tests) — all pass.
Result: 492/585 tests pass (was 466/560 before this phase).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-05-01 22:33:27 +00:00
parent 4022b60901
commit 36e6762539
3 changed files with 335 additions and 1 deletions

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

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@@ -35,6 +35,8 @@ cat > "$TMPFILE" << 'EPOCHS'
(load "lib/js/runtime.sx")
(epoch 6)
(load "lib/js/regex.sx")
(epoch 7)
(load "lib/js/stdlib.sx")
;; ── Phase 0: stubs still behave ─────────────────────────────────
(epoch 10)
@@ -1427,6 +1429,64 @@ cat > "$TMPFILE" << 'EPOCHS'
(epoch 5103)
(eval "(js-tdz-check \"x\" 42)")
;; ── Phase 22: Bitwise ops ────────────────────────────────────────
(epoch 6000)
(eval "(js-bitand 5 3)")
(epoch 6001)
(eval "(js-bitor 5 3)")
(epoch 6002)
(eval "(js-bitxor 5 3)")
(epoch 6003)
(eval "(js-lshift 1 4)")
(epoch 6004)
(eval "(js-rshift 32 2)")
(epoch 6005)
(eval "(js-rshift -8 1)")
(epoch 6006)
(eval "(js-urshift 4294967292 2)")
(epoch 6007)
(eval "(js-bitnot 0)")
;; ── Phase 22: Map ─────────────────────────────────────────────────
(epoch 6010)
(eval "(js-map? (js-map-new))")
(epoch 6011)
(eval "(get (js-map-set! (js-map-new) \"k\" 42) \"size\")")
(epoch 6012)
(eval "(let ((m (js-map-new))) (js-map-set! m \"a\" 1) (js-map-get m \"a\"))")
(epoch 6013)
(eval "(let ((m (js-map-new))) (js-map-set! m \"x\" 9) (js-map-has m \"x\"))")
(epoch 6014)
(eval "(let ((m (js-map-new))) (js-map-set! m \"x\" 9) (js-map-has m \"y\"))")
(epoch 6015)
(eval "(let ((m (js-map-new))) (js-map-set! m \"a\" 1) (js-map-set! m \"b\" 2) (get m \"size\"))")
(epoch 6016)
(eval "(let ((m (js-map-new))) (js-map-set! m \"a\" 1) (js-map-delete! m \"a\") (get m \"size\"))")
(epoch 6017)
(eval "(let ((m (js-map-new))) (js-map-set! m \"a\" 1) (js-map-set! m \"a\" 99) (js-map-get m \"a\"))")
;; ── Phase 22: Set ─────────────────────────────────────────────────
(epoch 6020)
(eval "(js-set? (js-set-new))")
(epoch 6021)
(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-has s 1))")
(epoch 6022)
(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-has s 2))")
(epoch 6023)
(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-add! s 1) (get s \"size\"))")
(epoch 6024)
(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-add! s 2) (get s \"size\"))")
(epoch 6025)
(eval "(let ((s (js-set-new))) (js-set-add! s 1) (js-set-delete! s 1) (get s \"size\"))")
;; ── Phase 22: RegExp constructor ──────────────────────────────────
(epoch 6030)
(eval "(js-regex? (RegExp \"ab\" \"i\"))")
(epoch 6031)
(eval "(get (RegExp \"hello\" \"gi\") \"global\")")
(epoch 6032)
(eval "(get (RegExp \"foo\" \"i\") \"ignoreCase\")")
EPOCHS
@@ -2188,6 +2248,39 @@ check 5101 "const binding initialized" '42'
check 5102 "TDZ sentinel is detectable" 'true'
check 5103 "tdz-check passes non-sentinel" '42'
# ── Phase 22: Bitwise ops ─────────────────────────────────────────
check 6000 "bitand 5&3" '1'
check 6001 "bitor 5|3" '7'
check 6002 "bitxor 5^3" '6'
check 6003 "lshift 1<<4" '16'
check 6004 "rshift 32>>2" '8'
check 6005 "rshift -8>>1" '-4'
check 6006 "urshift >>>" '1073741823'
check 6007 "bitnot ~0" '-1'
# ── Phase 22: Map ─────────────────────────────────────────────────
check 6010 "map? new map" 'true'
check 6011 "map set→size 1" '1'
check 6012 "map get existing" '1'
check 6013 "map has key yes" 'true'
check 6014 "map has key no" 'false'
check 6015 "map size 2 entries" '2'
check 6016 "map delete→size 0" '0'
check 6017 "map set overwrites" '99'
# ── Phase 22: Set ─────────────────────────────────────────────────
check 6020 "set? new set" 'true'
check 6021 "set has after add" 'true'
check 6022 "set has absent" 'false'
check 6023 "set dedup size" '1'
check 6024 "set size 2" '2'
check 6025 "set delete→size 0" '0'
# ── Phase 22: RegExp ──────────────────────────────────────────────
check 6030 "RegExp? result" 'true'
check 6031 "RegExp global flag" 'true'
check 6032 "RegExp ignoreCase" 'true'
TOTAL=$((PASS + FAIL))
if [ $FAIL -eq 0 ]; then
echo "$PASS/$TOTAL JS-on-SX tests passed"