text: /*
   * Copyright (c) 2021 Huawei Device Co., Ltd.
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include "builtins_generator.h"
  #include "ecmascript/js_function.h"
  #include "ecmascript/js_generator_object.h"
  
  namespace panda::ecmascript::builtins {
  // 26.2.1.1 GeneratorFunction(p1, p2, … , pn, body)
  JSTaggedValue BuiltinsGenerator::GeneratorFunctionConstructor(EcmaRuntimeCallInfo *argv)
  {
      BUILTINS_API_TRACE(argv->GetThread(), Generator, Constructor);
      // not support
      THROW_TYPE_ERROR_AND_RETURN(argv->GetThread(), "Not support eval. Forbidden using new GeneratorFunction().",
                                  JSTaggedValue::Exception());
  }
  
  // 26.4.1.2 Generator.prototype.next(value)
  JSTaggedValue BuiltinsGenerator::GeneratorPrototypeNext(EcmaRuntimeCallInfo *argv)
  {
      BUILTINS_API_TRACE(argv->GetThread(), Generator, PrototypeNext);
      // 1.Let g be the this value.
      JSThread *thread = argv->GetThread();
      [[maybe_unused]] EcmaHandleScope handleScope(thread);
      JSHandle<JSTaggedValue> msg = GetThis(argv);
      if (!msg->IsGeneratorObject()) {
          THROW_TYPE_ERROR_AND_RETURN(thread, "Not a generator object.", JSTaggedValue::Exception());
      }
      JSHandle<JSGeneratorObject> generator(thread, JSGeneratorObject::Cast(*JSTaggedValue::ToObject(thread, msg)));
      JSHandle<JSTaggedValue> value = GetCallArg(argv, 0);
  
      // 2.Return ? GeneratorResume(g, value).
      JSHandle<JSObject> result = JSGeneratorObject::GeneratorResume(thread, generator, value.GetTaggedValue());
      RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
      return result.GetTaggedValue();
  }
  
  // 26.4.1.3 Generator.prototype.return(value)
  JSTaggedValue BuiltinsGenerator::GeneratorPrototypeReturn(EcmaRuntimeCallInfo *argv)
  {
      BUILTINS_API_TRACE(argv->GetThread(), Generator, PrototypeReturn);
      // 1.Let g be the this value.
      JSThread *thread = argv->GetThread();
      [[maybe_unused]] EcmaHandleScope handleScope(thread);
      JSHandle<JSTaggedValue> msg = GetThis(argv);
      if (!msg->IsGeneratorObject()) {
          THROW_TYPE_ERROR_AND_RETURN(thread, "Not a generator object.", JSTaggedValue::Exception());
      }
      JSHandle<JSGeneratorObject> generator(thread, JSGeneratorObject::Cast(*JSTaggedValue::ToObject(thread, msg)));
  
      // 2.Let C be Completion { [[Type]]: return, [[Value]]: value, [[Target]]: empty }.
      JSHandle<JSTaggedValue> value = GetCallArg(argv, 0);
      ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
      JSHandle<CompletionRecord> completionRecord =
          factory->NewCompletionRecord(CompletionRecord::RETURN, value);
  
      // 3.Return ? GeneratorResumeAbrupt(g, C).
      JSHandle<JSObject> result = JSGeneratorObject::GeneratorResumeAbrupt(thread, generator, completionRecord);
      RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
      return result.GetTaggedValue();
  }
  
  // 26.4.1.4 Generator.prototype.throw(exception)
  JSTaggedValue BuiltinsGenerator::GeneratorPrototypeThrow(EcmaRuntimeCallInfo *argv)
  {
      BUILTINS_API_TRACE(argv->GetThread(), Generator, PrototypeThrow);
      // 1.Let g be the this value.
      JSThread *thread = argv->GetThread();
      [[maybe_unused]] EcmaHandleScope handleScope(thread);
      JSHandle<JSTaggedValue> msg = GetThis(argv);
      if (!msg->IsGeneratorObject()) {
          THROW_TYPE_ERROR_AND_RETURN(thread, "Not a generator object.", JSTaggedValue::Exception());
      }
      JSHandle<JSGeneratorObject> generator(thread, JSGeneratorObject::Cast(*JSTaggedValue::ToObject(thread, msg)));
  
      // 2.Let C be ThrowCompletion(exception).
      JSHandle<JSTaggedValue> exception = GetCallArg(argv, 0);
      ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
      JSHandle<CompletionRecord> completionRecord =
          factory->NewCompletionRecord(CompletionRecord::THROW, exception);
  
      // 3.Return ? GeneratorResumeAbrupt(g, C).
      JSHandle<JSObject> result = JSGeneratorObject::GeneratorResumeAbrupt(thread, generator, completionRecord);
      RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
      return result.GetTaggedValue();
  }
  }  // namespace panda::ecmascript::builtins
  