417523507e
The element-resolving functions on the Promise constructor are all very similar. To prepare for more of these functions to be implemented, break out common parts into a base class.
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
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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/AbstractOperations.h>
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/PromiseReaction.h>
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#include <LibJS/Runtime/PromiseResolvingElementFunctions.h>
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namespace JS {
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PromiseResolvingElementFunction::PromiseResolvingElementFunction(size_t index, PromiseValueList& values, PromiseCapability capability, RemainingElements& remaining_elements, Object& prototype)
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: NativeFunction(prototype)
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, m_index(index)
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, m_values(values)
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, m_capability(move(capability))
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, m_remaining_elements(remaining_elements)
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{
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}
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void PromiseResolvingElementFunction::initialize(GlobalObject& global_object)
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{
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Base::initialize(global_object);
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define_direct_property(vm().names.length, Value(1), Attribute::Configurable);
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}
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Value PromiseResolvingElementFunction::call()
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{
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if (m_already_called)
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return js_undefined();
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m_already_called = true;
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return resolve_element();
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}
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void PromiseResolvingElementFunction::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(&m_values);
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visitor.visit(m_capability.promise);
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visitor.visit(m_capability.resolve);
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visitor.visit(m_capability.reject);
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visitor.visit(&m_remaining_elements);
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}
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PromiseAllResolveElementFunction* PromiseAllResolveElementFunction::create(GlobalObject& global_object, size_t index, PromiseValueList& values, PromiseCapability capability, RemainingElements& remaining_elements)
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{
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return global_object.heap().allocate<PromiseAllResolveElementFunction>(global_object, index, values, capability, remaining_elements, *global_object.function_prototype());
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}
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PromiseAllResolveElementFunction::PromiseAllResolveElementFunction(size_t index, PromiseValueList& values, PromiseCapability capability, RemainingElements& remaining_elements, Object& prototype)
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: PromiseResolvingElementFunction(index, values, move(capability), remaining_elements, prototype)
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{
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}
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Value PromiseAllResolveElementFunction::resolve_element()
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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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m_values.values[m_index] = vm.argument(0);
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if (--m_remaining_elements.value == 0) {
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auto values_array = Array::create_from(global_object, m_values.values);
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return vm.call(*m_capability.resolve, js_undefined(), values_array);
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}
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return js_undefined();
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}
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}
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