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fixed 'with' access by adding HasPropery() calls - removed unused 'with_get_ref_undef' opcode

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This commit is contained in:
Fabrice Bellard
2025-04-16 14:48:12 +02:00
parent 83530ac9a7
commit 3b04c58628
3 changed files with 85 additions and 43 deletions
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122
quickjs.c
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@@ -10100,6 +10100,9 @@ static int JS_SetGlobalVar(JSContext *ctx, JSAtom prop, JSValue val,
set_value(ctx, &pr->u.value, val);
return 0;
}
/* XXX: add a fast path where the property exists and the object
is not exotic. Otherwise do as in OP_put_ref_value and remove
JS_PROP_NO_ADD which is no longer necessary */
flags = JS_PROP_THROW_STRICT;
if (is_strict_mode(ctx))
flags |= JS_PROP_NO_ADD;
@@ -17780,16 +17783,33 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj,
CASE(OP_get_ref_value):
{
JSValue val;
JSAtom atom;
int ret;
atom = JS_ValueToAtom(ctx, sp[-1]);
if (atom == JS_ATOM_NULL)
goto exception;
if (unlikely(JS_IsUndefined(sp[-2]))) {
JSAtom atom = JS_ValueToAtom(ctx, sp[-1]);
if (atom != JS_ATOM_NULL) {
JS_ThrowReferenceErrorNotDefined(ctx, atom);
JS_FreeAtom(ctx, atom);
}
JS_ThrowReferenceErrorNotDefined(ctx, atom);
JS_FreeAtom(ctx, atom);
goto exception;
}
val = JS_GetPropertyValue(ctx, sp[-2],
JS_DupValue(ctx, sp[-1]));
ret = JS_HasProperty(ctx, sp[-2], atom);
if (unlikely(ret <= 0)) {
if (ret < 0) {
JS_FreeAtom(ctx, atom);
goto exception;
}
if (is_strict_mode(ctx)) {
JS_ThrowReferenceErrorNotDefined(ctx, atom);
JS_FreeAtom(ctx, atom);
goto exception;
}
val = JS_UNDEFINED;
} else {
val = JS_GetProperty(ctx, sp[-2], atom);
}
JS_FreeAtom(ctx, atom);
if (unlikely(JS_IsException(val)))
goto exception;
sp[0] = val;
@@ -17830,24 +17850,35 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj,
CASE(OP_put_ref_value):
{
int ret, flags;
flags = JS_PROP_THROW_STRICT;
int ret;
JSAtom atom;
atom = JS_ValueToAtom(ctx, sp[-2]);
if (unlikely(atom == JS_ATOM_NULL))
goto exception;
if (unlikely(JS_IsUndefined(sp[-3]))) {
if (is_strict_mode(ctx)) {
JSAtom atom = JS_ValueToAtom(ctx, sp[-2]);
if (atom != JS_ATOM_NULL) {
JS_ThrowReferenceErrorNotDefined(ctx, atom);
JS_FreeAtom(ctx, atom);
}
JS_ThrowReferenceErrorNotDefined(ctx, atom);
JS_FreeAtom(ctx, atom);
goto exception;
} else {
sp[-3] = JS_DupValue(ctx, ctx->global_obj);
}
} else {
if (is_strict_mode(ctx))
flags |= JS_PROP_NO_ADD;
}
ret = JS_SetPropertyValue(ctx, sp[-3], sp[-2], sp[-1], flags);
ret = JS_HasProperty(ctx, sp[-3], atom);
if (unlikely(ret <= 0)) {
if (unlikely(ret < 0)) {
JS_FreeAtom(ctx, atom);
goto exception;
}
if (is_strict_mode(ctx)) {
JS_ThrowReferenceErrorNotDefined(ctx, atom);
JS_FreeAtom(ctx, atom);
goto exception;
}
}
ret = JS_SetPropertyInternal(ctx, sp[-3], atom, sp[-1], sp[-3], JS_PROP_THROW_STRICT);
JS_FreeAtom(ctx, atom);
JS_FreeValue(ctx, sp[-2]);
JS_FreeValue(ctx, sp[-3]);
sp -= 3;
if (unlikely(ret < 0))
@@ -18479,7 +18510,6 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj,
CASE(OP_with_delete_var):
CASE(OP_with_make_ref):
CASE(OP_with_get_ref):
CASE(OP_with_get_ref_undef):
{
JSAtom atom;
int32_t diff;
@@ -18504,13 +18534,34 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj,
}
switch (opcode) {
case OP_with_get_var:
val = JS_GetProperty(ctx, obj, atom);
if (unlikely(JS_IsException(val)))
goto exception;
/* in Object Environment Records, GetBindingValue() calls HasProperty() */
ret = JS_HasProperty(ctx, obj, atom);
if (unlikely(ret <= 0)) {
if (ret < 0)
goto exception;
if (is_strict_mode(ctx)) {
JS_ThrowReferenceErrorNotDefined(ctx, atom);
goto exception;
}
val = JS_UNDEFINED;
} else {
val = JS_GetProperty(ctx, obj, atom);
if (unlikely(JS_IsException(val)))
goto exception;
}
set_value(ctx, &sp[-1], val);
break;
case OP_with_put_var:
/* XXX: check if strict mode */
case OP_with_put_var: /* used e.g. in for in/of */
/* in Object Environment Records, SetMutableBinding() calls HasProperty() */
ret = JS_HasProperty(ctx, obj, atom);
if (unlikely(ret <= 0)) {
if (ret < 0)
goto exception;
if (is_strict_mode(ctx)) {
JS_ThrowReferenceErrorNotDefined(ctx, atom);
goto exception;
}
}
ret = JS_SetPropertyInternal(ctx, obj, atom, sp[-2], obj,
JS_PROP_THROW_STRICT);
JS_FreeValue(ctx, sp[-1]);
@@ -18531,18 +18582,17 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj,
break;
case OP_with_get_ref:
/* produce a pair object/method on the stack */
val = JS_GetProperty(ctx, obj, atom);
if (unlikely(JS_IsException(val)))
/* in Object Environment Records, GetBindingValue() calls HasProperty() */
ret = JS_HasProperty(ctx, obj, atom);
if (unlikely(ret < 0))
goto exception;
*sp++ = val;
break;
case OP_with_get_ref_undef:
/* produce a pair undefined/function on the stack */
val = JS_GetProperty(ctx, obj, atom);
if (unlikely(JS_IsException(val)))
goto exception;
JS_FreeValue(ctx, sp[-1]);
sp[-1] = JS_UNDEFINED;
if (!ret) {
val = JS_UNDEFINED;
} else {
val = JS_GetProperty(ctx, obj, atom);
if (unlikely(JS_IsException(val)))
goto exception;
}
*sp++ = val;
break;
}
@@ -32554,7 +32604,6 @@ static __exception int resolve_labels(JSContext *ctx, JSFunctionDef *s)
case OP_with_delete_var:
case OP_with_make_ref:
case OP_with_get_ref:
case OP_with_get_ref_undef:
{
JSAtom atom;
int is_with;
@@ -33329,7 +33378,6 @@ static __exception int compute_stack_size(JSContext *ctx,
break;
case OP_with_make_ref:
case OP_with_get_ref:
case OP_with_get_ref_undef:
diff = get_u32(bc_buf + pos + 5);
if (ss_check(ctx, s, pos + 5 + diff, op, stack_len + 2, catch_pos))
goto fail;