mirror of
https://github.com/bellard/quickjs.git
synced 2025-05-11 10:54:20 +08:00
added more C callbacks for exotic objects (#324)
This commit is contained in:
Fabrice Bellard
parent
7645ce5f63
commit
1b13fa6450
97
quickjs.c
97
quickjs.c
@ -1149,13 +1149,8 @@ static JSProperty *add_property(JSContext *ctx,
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static int JS_ToBigInt64Free(JSContext *ctx, int64_t *pres, JSValue val);
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JSValue JS_ThrowOutOfMemory(JSContext *ctx);
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static JSValue JS_ThrowTypeErrorRevokedProxy(JSContext *ctx);
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static JSValue js_proxy_getPrototypeOf(JSContext *ctx, JSValueConst obj);
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static int js_proxy_setPrototypeOf(JSContext *ctx, JSValueConst obj,
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JSValueConst proto_val, BOOL throw_flag);
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static int js_resolve_proxy(JSContext *ctx, JSValueConst *pval, int throw_exception);
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static int js_proxy_isExtensible(JSContext *ctx, JSValueConst obj);
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static int js_proxy_preventExtensions(JSContext *ctx, JSValueConst obj);
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static int JS_CreateProperty(JSContext *ctx, JSObject *p,
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JSAtom prop, JSValueConst val,
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JSValueConst getter, JSValueConst setter,
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@ -7194,7 +7189,8 @@ static inline __exception int js_poll_interrupts(JSContext *ctx)
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}
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}
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/* return -1 (exception) or TRUE/FALSE */
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/* Return -1 (exception) or TRUE/FALSE. 'throw_flag' = FALSE indicates
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that it is called from Reflect.setPrototypeOf(). */
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static int JS_SetPrototypeInternal(JSContext *ctx, JSValueConst obj,
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JSValueConst proto_val,
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BOOL throw_flag)
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@ -7225,8 +7221,20 @@ static int JS_SetPrototypeInternal(JSContext *ctx, JSValueConst obj,
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if (throw_flag && JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT)
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return TRUE;
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if (unlikely(p->class_id == JS_CLASS_PROXY))
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return js_proxy_setPrototypeOf(ctx, obj, proto_val, throw_flag);
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if (unlikely(p->is_exotic)) {
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const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic;
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int ret;
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if (em && em->set_prototype) {
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ret = em->set_prototype(ctx, obj, proto_val);
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if (ret == 0 && throw_flag) {
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JS_ThrowTypeError(ctx, "proxy: bad prototype");
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return -1;
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} else {
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return ret;
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}
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}
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}
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sh = p->shape;
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if (sh->proto == proto)
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return TRUE;
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@ -7303,22 +7311,24 @@ static JSValueConst JS_GetPrototypePrimitive(JSContext *ctx, JSValueConst val)
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return val;
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}
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/* Return an Object, JS_NULL or JS_EXCEPTION in case of Proxy object. */
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/* Return an Object, JS_NULL or JS_EXCEPTION in case of exotic object. */
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JSValue JS_GetPrototype(JSContext *ctx, JSValueConst obj)
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{
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JSValue val;
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if (JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT) {
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JSObject *p;
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p = JS_VALUE_GET_OBJ(obj);
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if (unlikely(p->class_id == JS_CLASS_PROXY)) {
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val = js_proxy_getPrototypeOf(ctx, obj);
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} else {
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p = p->shape->proto;
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if (!p)
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val = JS_NULL;
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else
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val = JS_DupValue(ctx, JS_MKPTR(JS_TAG_OBJECT, p));
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if (unlikely(p->is_exotic)) {
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const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic;
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if (em && em->get_prototype) {
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return em->get_prototype(ctx, obj);
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}
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}
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p = p->shape->proto;
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if (!p)
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val = JS_NULL;
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else
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val = JS_DupValue(ctx, JS_MKPTR(JS_TAG_OBJECT, p));
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} else {
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val = JS_DupValue(ctx, JS_GetPrototypePrimitive(ctx, obj));
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}
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@ -7365,8 +7375,8 @@ static int JS_OrdinaryIsInstanceOf(JSContext *ctx, JSValueConst val,
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for(;;) {
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proto1 = p->shape->proto;
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if (!proto1) {
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/* slow case if proxy in the prototype chain */
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if (unlikely(p->class_id == JS_CLASS_PROXY)) {
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/* slow case if exotic object in the prototype chain */
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if (unlikely(p->is_exotic && !p->fast_array)) {
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JSValue obj1;
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obj1 = JS_DupValue(ctx, JS_MKPTR(JS_TAG_OBJECT, (JSObject *)p));
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for(;;) {
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@ -8170,7 +8180,7 @@ int JS_GetOwnProperty(JSContext *ctx, JSPropertyDescriptor *desc,
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return JS_GetOwnPropertyInternal(ctx, desc, JS_VALUE_GET_OBJ(obj), prop);
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}
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/* return -1 if exception (Proxy object only) or TRUE/FALSE */
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/* return -1 if exception (exotic object only) or TRUE/FALSE */
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int JS_IsExtensible(JSContext *ctx, JSValueConst obj)
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{
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JSObject *p;
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@ -8178,13 +8188,16 @@ int JS_IsExtensible(JSContext *ctx, JSValueConst obj)
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if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT))
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return FALSE;
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p = JS_VALUE_GET_OBJ(obj);
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if (unlikely(p->class_id == JS_CLASS_PROXY))
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return js_proxy_isExtensible(ctx, obj);
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else
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return p->extensible;
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if (unlikely(p->is_exotic)) {
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const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic;
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if (em && em->is_extensible) {
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return em->is_extensible(ctx, obj);
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}
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}
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return p->extensible;
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}
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/* return -1 if exception (Proxy object only) or TRUE/FALSE */
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/* return -1 if exception (exotic object only) or TRUE/FALSE */
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int JS_PreventExtensions(JSContext *ctx, JSValueConst obj)
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{
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JSObject *p;
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@ -8192,8 +8205,12 @@ int JS_PreventExtensions(JSContext *ctx, JSValueConst obj)
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if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT))
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return FALSE;
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p = JS_VALUE_GET_OBJ(obj);
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if (unlikely(p->class_id == JS_CLASS_PROXY))
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return js_proxy_preventExtensions(ctx, obj);
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if (unlikely(p->is_exotic)) {
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const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic;
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if (em && em->prevent_extensions) {
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return em->prevent_extensions(ctx, obj);
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}
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}
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p->extensible = FALSE;
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return TRUE;
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}
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@ -46040,7 +46057,7 @@ static JSProxyData *get_proxy_method(JSContext *ctx, JSValue *pmethod,
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return s;
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}
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static JSValue js_proxy_getPrototypeOf(JSContext *ctx, JSValueConst obj)
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static JSValue js_proxy_get_prototype(JSContext *ctx, JSValueConst obj)
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{
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JSProxyData *s;
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JSValue method, ret, proto1;
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@ -46081,8 +46098,8 @@ static JSValue js_proxy_getPrototypeOf(JSContext *ctx, JSValueConst obj)
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return ret;
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}
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static int js_proxy_setPrototypeOf(JSContext *ctx, JSValueConst obj,
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JSValueConst proto_val, BOOL throw_flag)
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static int js_proxy_set_prototype(JSContext *ctx, JSValueConst obj,
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JSValueConst proto_val)
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{
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JSProxyData *s;
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JSValue method, ret, proto1;
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@ -46094,21 +46111,15 @@ static int js_proxy_setPrototypeOf(JSContext *ctx, JSValueConst obj,
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if (!s)
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return -1;
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if (JS_IsUndefined(method))
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return JS_SetPrototypeInternal(ctx, s->target, proto_val, throw_flag);
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return JS_SetPrototypeInternal(ctx, s->target, proto_val, FALSE);
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args[0] = s->target;
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args[1] = proto_val;
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ret = JS_CallFree(ctx, method, s->handler, 2, args);
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if (JS_IsException(ret))
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return -1;
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res = JS_ToBoolFree(ctx, ret);
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if (!res) {
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if (throw_flag) {
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JS_ThrowTypeError(ctx, "proxy: bad prototype");
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return -1;
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} else {
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return FALSE;
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}
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}
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if (!res)
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return FALSE;
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res2 = JS_IsExtensible(ctx, s->target);
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if (res2 < 0)
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return -1;
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@ -46126,7 +46137,7 @@ static int js_proxy_setPrototypeOf(JSContext *ctx, JSValueConst obj,
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return TRUE;
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}
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static int js_proxy_isExtensible(JSContext *ctx, JSValueConst obj)
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static int js_proxy_is_extensible(JSContext *ctx, JSValueConst obj)
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{
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JSProxyData *s;
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JSValue method, ret;
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@ -46152,7 +46163,7 @@ static int js_proxy_isExtensible(JSContext *ctx, JSValueConst obj)
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return res;
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}
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static int js_proxy_preventExtensions(JSContext *ctx, JSValueConst obj)
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static int js_proxy_prevent_extensions(JSContext *ctx, JSValueConst obj)
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{
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JSProxyData *s;
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JSValue method, ret;
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@ -46860,6 +46871,10 @@ static const JSClassExoticMethods js_proxy_exotic_methods = {
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.has_property = js_proxy_has,
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.get_property = js_proxy_get,
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.set_property = js_proxy_set,
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.get_prototype = js_proxy_get_prototype,
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.set_prototype = js_proxy_set_prototype,
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.is_extensible = js_proxy_is_extensible,
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.prevent_extensions = js_proxy_prevent_extensions,
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};
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static JSValue js_proxy_constructor(JSContext *ctx, JSValueConst this_val,
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11
quickjs.h
11
quickjs.h
@ -501,6 +501,17 @@ typedef struct JSClassExoticMethods {
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/* return < 0 if exception or TRUE/FALSE */
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int (*set_property)(JSContext *ctx, JSValueConst obj, JSAtom atom,
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JSValueConst value, JSValueConst receiver, int flags);
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/* To get a consistent object behavior when get_prototype != NULL,
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get_property, set_property and set_prototype must be != NULL
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and the object must be created with a JS_NULL prototype. */
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JSValue (*get_prototype)(JSContext *ctx, JSValueConst obj);
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/* return < 0 if exception or TRUE/FALSE */
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int (*set_prototype)(JSContext *ctx, JSValueConst obj, JSValueConst proto_val);
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/* return < 0 if exception or TRUE/FALSE */
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int (*is_extensible)(JSContext *ctx, JSValueConst obj);
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/* return < 0 if exception or TRUE/FALSE */
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int (*prevent_extensions)(JSContext *ctx, JSValueConst obj);
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} JSClassExoticMethods;
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typedef void JSClassFinalizer(JSRuntime *rt, JSValue val);
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