1 /*
2 * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "ecmascript/builtins/builtins_proxy.h"
17 #include "ecmascript/global_env.h"
18 #include "ecmascript/js_function.h"
19
20 namespace panda::ecmascript::builtins {
21 // 26.2.1.1 Proxy( [ value ] )
ProxyConstructor(EcmaRuntimeCallInfo *argv)22 JSTaggedValue BuiltinsProxy::ProxyConstructor(EcmaRuntimeCallInfo *argv)
23 {
24 ASSERT(argv);
25 BUILTINS_API_TRACE(argv->GetThread(), Proxy, Constructor);
26 [[maybe_unused]] EcmaHandleScope handleScope(argv->GetThread());
27
28 // 1.If NewTarget is undefined, throw a TypeError exception.
29 JSHandle<JSTaggedValue> newTarget = GetNewTarget(argv);
30 if (newTarget->IsUndefined()) {
31 THROW_TYPE_ERROR_AND_RETURN(argv->GetThread(), "ProxyConstructor: NewTarget is undefined",
32 JSTaggedValue::Exception());
33 }
34
35 // 2.Return ProxyCreate(target, handler).
36 JSHandle<JSProxy> proxy = JSProxy::ProxyCreate(argv->GetThread(), GetCallArg(argv, 0), GetCallArg(argv, 1));
37 RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(argv->GetThread());
38 return proxy.GetTaggedValue();
39 }
40
41 // 26.2.2.1 Proxy.revocable ( target, handler )
Revocable(EcmaRuntimeCallInfo *argv)42 JSTaggedValue BuiltinsProxy::Revocable(EcmaRuntimeCallInfo *argv)
43 {
44 ASSERT(argv);
45 BUILTINS_API_TRACE(argv->GetThread(), Proxy, Revocable);
46 JSThread *thread = argv->GetThread();
47 [[maybe_unused]] EcmaHandleScope handleScope(thread);
48
49 // 1.Let p be ProxyCreate(target, handler).
50 JSHandle<JSProxy> proxy = JSProxy::ProxyCreate(thread, GetCallArg(argv, 0), GetCallArg(argv, 1));
51
52 // 2.ReturnIfAbrupt(p).
53 RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
54
55 // 3 ~ 4 new revoker function and set the [[RevocableProxy]] internal slot
56 JSHandle<JSProxyRevocFunction> revoker = thread->GetEcmaVM()->GetFactory()->NewJSProxyRevocFunction(proxy);
57
58 // 5.Let result be ObjectCreate(%ObjectPrototype%).
59 JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
60 JSHandle<JSTaggedValue> proto = env->GetObjectFunctionPrototype();
61 JSHandle<JSObject> result = thread->GetEcmaVM()->GetFactory()->OrdinaryNewJSObjectCreate(proto);
62
63 // 6.Perform CreateDataProperty(result, "proxy", p).
64 auto globalConst = thread->GlobalConstants();
65 JSHandle<JSTaggedValue> proxyKey = globalConst->GetHandledProxyString();
66 JSObject::CreateDataProperty(thread, result, proxyKey, JSHandle<JSTaggedValue>(proxy));
67
68 // 7.Perform CreateDataProperty(result, "revoke", revoker).
69 JSHandle<JSTaggedValue> revokeKey = globalConst->GetHandledRevokeString();
70 JSObject::CreateDataProperty(thread, result, revokeKey, JSHandle<JSTaggedValue>(revoker));
71
72 // 8.Return result.
73 return result.GetTaggedValue();
74 }
75
76 // A Proxy revocation function to invalidate a specific Proxy object
InvalidateProxyFunction(EcmaRuntimeCallInfo *argv)77 JSTaggedValue BuiltinsProxy::InvalidateProxyFunction(EcmaRuntimeCallInfo *argv)
78 {
79 ASSERT(argv);
80 BUILTINS_API_TRACE(argv->GetThread(), Proxy, InvalidateProxyFunction);
81 JSThread *thread = argv->GetThread();
82 [[maybe_unused]] EcmaHandleScope handleScope(thread);
83
84 JSHandle<JSTaggedValue> proxy = GetConstructor(argv);
85 JSProxyRevocFunction::ProxyRevocFunctions(thread, JSHandle<JSProxyRevocFunction>(proxy));
86 return JSTaggedValue::Undefined();
87 }
88 } // namespace panda::ecmascript::builtins
89