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fixed operation order in Regexp constructor

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Fabrice Bellard
2025-10-18 11:05:05 +02:00
parent af16a97921
commit c31809e84d
2 changed files with 37 additions and 25 deletions
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60
quickjs.c
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@@ -1176,8 +1176,8 @@ static int JS_ToUint8ClampFree(JSContext *ctx, int32_t *pres, JSValue val);
static JSValue js_new_string8_len(JSContext *ctx, const char *buf, int len);
static JSValue js_compile_regexp(JSContext *ctx, JSValueConst pattern,
JSValueConst flags);
static JSValue js_regexp_constructor_internal(JSContext *ctx, JSValueConst ctor,
JSValue pattern, JSValue bc);
static JSValue js_regexp_set_internal(JSContext *ctx, JSValue obj,
JSValue pattern, JSValue bc);
static void gc_decref(JSRuntime *rt);
static int JS_NewClass1(JSRuntime *rt, JSClassID class_id,
const JSClassDef *class_def, JSAtom name);
@@ -5238,7 +5238,7 @@ static JSValue JS_NewObjectFromShape(JSContext *ctx, JSShape *sh, JSClassID clas
case JS_CLASS_REGEXP:
p->u.regexp.pattern = NULL;
p->u.regexp.bytecode = NULL;
goto set_exotic;
break;
default:
set_exotic:
if (ctx->rt->class_array[class_id].exotic) {
@@ -13426,6 +13426,11 @@ static void js_print_regexp(JSPrintValueState *s, JSObject *p1)
int i, n, c, c2, bra, flags;
static const char regexp_flags[] = { 'g', 'i', 'm', 's', 'u', 'y', 'd', 'v' };
if (!re->pattern || !re->bytecode) {
/* the regexp fields are zeroed at init */
js_puts(s, "[uninitialized_regexp]");
return;
}
p = re->pattern;
js_putc(s, '/');
if (p->len == 0) {
@@ -17638,8 +17643,13 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj,
CASE(OP_regexp):
{
sp[-2] = js_regexp_constructor_internal(ctx, JS_UNDEFINED,
sp[-2], sp[-1]);
JSValue obj;
obj = JS_NewObjectClass(ctx, JS_CLASS_REGEXP);
if (JS_IsException(obj))
goto exception;
sp[-2] = js_regexp_set_internal(ctx, obj, sp[-2], sp[-1]);
if (JS_IsException(sp[-2]))
goto exception;
sp--;
}
BREAK;
@@ -46105,8 +46115,10 @@ static void js_regexp_finalizer(JSRuntime *rt, JSValue val)
{
JSObject *p = JS_VALUE_GET_OBJ(val);
JSRegExp *re = &p->u.regexp;
JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_STRING, re->bytecode));
JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_STRING, re->pattern));
if (re->bytecode != NULL)
JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_STRING, re->bytecode));
if (re->pattern != NULL)
JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_STRING, re->pattern));
}
/* create a string containing the RegExp bytecode */
@@ -46188,32 +46200,29 @@ static JSValue js_compile_regexp(JSContext *ctx, JSValueConst pattern,
return ret;
}
/* create a RegExp object from a string containing the RegExp bytecode
and the source pattern */
static JSValue js_regexp_constructor_internal(JSContext *ctx, JSValueConst ctor,
JSValue pattern, JSValue bc)
/* set the RegExp fields */
static JSValue js_regexp_set_internal(JSContext *ctx,
JSValue obj,
JSValue pattern, JSValue bc)
{
JSValue obj;
JSObject *p;
JSRegExp *re;
/* sanity check */
if (JS_VALUE_GET_TAG(bc) != JS_TAG_STRING ||
JS_VALUE_GET_TAG(pattern) != JS_TAG_STRING) {
if (unlikely(JS_VALUE_GET_TAG(bc) != JS_TAG_STRING ||
JS_VALUE_GET_TAG(pattern) != JS_TAG_STRING)) {
JS_ThrowTypeError(ctx, "string expected");
fail:
JS_FreeValue(ctx, obj);
JS_FreeValue(ctx, bc);
JS_FreeValue(ctx, pattern);
return JS_EXCEPTION;
}
obj = js_create_from_ctor(ctx, ctor, JS_CLASS_REGEXP);
if (JS_IsException(obj))
goto fail;
p = JS_VALUE_GET_OBJ(obj);
re = &p->u.regexp;
re->pattern = JS_VALUE_GET_STRING(pattern);
re->bytecode = JS_VALUE_GET_STRING(bc);
/* Note: cannot fail because the field is preallocated */
JS_DefinePropertyValue(ctx, obj, JS_ATOM_lastIndex, JS_NewInt32(ctx, 0),
JS_PROP_WRITABLE);
return obj;
@@ -46250,7 +46259,7 @@ static int js_is_regexp(JSContext *ctx, JSValueConst obj)
static JSValue js_regexp_constructor(JSContext *ctx, JSValueConst new_target,
int argc, JSValueConst *argv)
{
JSValue pattern, flags, bc, val;
JSValue pattern, flags, bc, val, obj = JS_UNDEFINED;
JSValueConst pat, flags1;
JSRegExp *re;
int pat_is_regexp;
@@ -46280,11 +46289,12 @@ static JSValue js_regexp_constructor(JSContext *ctx, JSValueConst new_target,
pattern = JS_DupValue(ctx, JS_MKPTR(JS_TAG_STRING, re->pattern));
if (JS_IsUndefined(flags1)) {
bc = JS_DupValue(ctx, JS_MKPTR(JS_TAG_STRING, re->bytecode));
obj = js_create_from_ctor(ctx, new_target, JS_CLASS_REGEXP);
if (JS_IsException(obj))
goto fail;
goto no_compilation;
} else {
flags = JS_ToString(ctx, flags1);
if (JS_IsException(flags))
goto fail;
flags = JS_DupValue(ctx, flags1);
}
} else {
flags = JS_UNDEFINED;
@@ -46313,15 +46323,19 @@ static JSValue js_regexp_constructor(JSContext *ctx, JSValueConst new_target,
goto fail;
}
}
obj = js_create_from_ctor(ctx, new_target, JS_CLASS_REGEXP);
if (JS_IsException(obj))
goto fail;
bc = js_compile_regexp(ctx, pattern, flags);
if (JS_IsException(bc))
goto fail;
JS_FreeValue(ctx, flags);
no_compilation:
return js_regexp_constructor_internal(ctx, new_target, pattern, bc);
return js_regexp_set_internal(ctx, obj, pattern, bc);
fail:
JS_FreeValue(ctx, pattern);
JS_FreeValue(ctx, flags);
JS_FreeValue(ctx, obj);
return JS_EXCEPTION;
}