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https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
/*
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* Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/ECMAScriptFunctionObject.h>
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#include <LibJS/Runtime/FunctionConstructor.h>
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#include <LibJS/Runtime/GeneratorFunctionConstructor.h>
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#include <LibJS/Runtime/GlobalObject.h>
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namespace JS {
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GeneratorFunctionConstructor::GeneratorFunctionConstructor(GlobalObject& global_object)
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: NativeFunction(*static_cast<Object*>(global_object.function_constructor()))
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{
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}
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void GeneratorFunctionConstructor::initialize(GlobalObject& global_object)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(global_object);
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// 27.3.2.1 GeneratorFunction.length, https://tc39.es/ecma262/#sec-generatorfunction.length
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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// 27.3.2.2 GeneratorFunction.prototype, https://tc39.es/ecma262/#sec-generatorfunction.length
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define_direct_property(vm.names.prototype, global_object.generator_function_prototype(), 0);
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}
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// 27.3.1.1 GeneratorFunction ( p1, p2, … , pn, body ), https://tc39.es/ecma262/#sec-generatorfunction
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ThrowCompletionOr<Value> GeneratorFunctionConstructor::call()
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{
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return TRY(construct(*this));
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}
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// 27.3.1.1 GeneratorFunction ( p1, p2, … , pn, body ), https://tc39.es/ecma262/#sec-generatorfunction
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ThrowCompletionOr<Object*> GeneratorFunctionConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto& global_object = this->global_object();
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// 1. Let C be the active function object.
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auto* constructor = vm.active_function_object();
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// 2. Let args be the argumentsList that was passed to this function by [[Call]] or [[Construct]].
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auto& args = vm.running_execution_context().arguments;
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// 3. Return ? CreateDynamicFunction(C, NewTarget, generator, args).
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return TRY(FunctionConstructor::create_dynamic_function(global_object, *constructor, &new_target, FunctionKind::Generator, args));
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}
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}
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