1 /*
2 * Copyright (c) 2022 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_async_generator.h"
17 #include "ecmascript/js_async_generator_object.h"
18
19 namespace panda::ecmascript::builtins {
20 // ecma 27.6.1.1
AsyncGeneratorFunctionConstructor(EcmaRuntimeCallInfo *argv)21 JSTaggedValue BuiltinsAsyncGenerator::AsyncGeneratorFunctionConstructor(EcmaRuntimeCallInfo *argv)
22 {
23 BUILTINS_API_TRACE(argv->GetThread(), AsyncGenerator, Constructor);
24 // not support
25 THROW_TYPE_ERROR_AND_RETURN(argv->GetThread(), "Not support eval. Forbidden using new AsyncGeneratorFunction().",
26 JSTaggedValue::Exception());
27 }
28
29 // ecma 27.6.1.2 AsyncGenerator.prototype.next
AsyncGeneratorPrototypeNext(EcmaRuntimeCallInfo *argv)30 JSTaggedValue BuiltinsAsyncGenerator::AsyncGeneratorPrototypeNext(EcmaRuntimeCallInfo *argv)
31 {
32 JSThread *thread = argv->GetThread();
33 BUILTINS_API_TRACE(thread, AsyncGenerator, PrototypeNext);
34 // 1.Let g be the this value.
35 [[maybe_unused]] EcmaHandleScope handleScope(thread);
36 JSHandle<JSTaggedValue> msg = GetThis(argv);
37
38 JSHandle<JSTaggedValue> value = GetCallArg(argv, 0);
39 // 2. Let completion be NormalCompletion(value).
40 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
41 JSHandle<CompletionRecord> completionRecord =
42 factory->NewCompletionRecord(CompletionRecordType::NORMAL, value);
43 // 3. Return ! AsyncGeneratorEnqueue(generator, completion, empty).
44 return JSAsyncGeneratorObject::AsyncGeneratorEnqueue(thread, msg, completionRecord);
45 }
46
47 // ecma 27.6.1.3 AsyncGenerator.prototype.return
AsyncGeneratorPrototypeReturn(EcmaRuntimeCallInfo *argv)48 JSTaggedValue BuiltinsAsyncGenerator::AsyncGeneratorPrototypeReturn(EcmaRuntimeCallInfo *argv)
49 {
50 JSThread *thread = argv->GetThread();
51 BUILTINS_API_TRACE(thread, AsyncGenerator, PrototypeReturn);
52 // 1.Let generator be the this value.
53 [[maybe_unused]] EcmaHandleScope handleScope(thread);
54 JSHandle<JSTaggedValue> msg = GetThis(argv);
55 // 2.Let completion be Completion { [[Type]]: return, [[Value]]: value, [[Target]]: empty }.
56 JSHandle<JSTaggedValue> value = GetCallArg(argv, 0);
57 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
58 JSHandle<CompletionRecord> completionRecord =
59 factory->NewCompletionRecord(CompletionRecordType::RETURN, value);
60 // 3.Return ! AsyncGeneratorEnqueue(generator, completion, empty).
61 return JSAsyncGeneratorObject::AsyncGeneratorEnqueue(thread, msg, completionRecord);
62 }
63
64 // ecma 27.6.1.4 AsyncGenerator.prototype.throw
AsyncGeneratorPrototypeThrow(EcmaRuntimeCallInfo *argv)65 JSTaggedValue BuiltinsAsyncGenerator::AsyncGeneratorPrototypeThrow(EcmaRuntimeCallInfo *argv)
66 {
67 JSThread *thread = argv->GetThread();
68 BUILTINS_API_TRACE(thread, AsyncGenerator, PrototypeThrow);
69 // 1.Let generator be the this value.
70 [[maybe_unused]] EcmaHandleScope handleScope(thread);
71 JSHandle<JSTaggedValue> msg = GetThis(argv);
72 // 2.Let completion be ThrowCompletion(exception).
73 JSHandle<JSTaggedValue> exception = GetCallArg(argv, 0);
74 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
75 JSHandle<CompletionRecord> completionRecord =
76 factory->NewCompletionRecord(CompletionRecordType::THROW, exception);
77 // 3.Return ! AsyncGeneratorEnqueue(generator, completion, empty).
78 return JSAsyncGeneratorObject::AsyncGeneratorEnqueue(thread, msg, completionRecord);
79 }
80 } // namespace panda::ecmascript::builtins
81