0c711f690e
* fix: Promise resolution and unit test * Update to use microtask runner * Address review
85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
// Copyright (c) 2018 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ATOM_COMMON_PROMISE_UTIL_H_
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#define ATOM_COMMON_PROMISE_UTIL_H_
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#include <string>
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#include "content/public/browser/browser_thread.h"
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#include "native_mate/converter.h"
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namespace atom {
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namespace util {
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class Promise : public base::RefCounted<Promise> {
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public:
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explicit Promise(v8::Isolate* isolate);
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v8::Isolate* isolate() const { return isolate_; }
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virtual v8::Local<v8::Promise> GetHandle() const;
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v8::Maybe<bool> Resolve() {
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return GetInner()->Resolve(isolate()->GetCurrentContext(),
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v8::Undefined(isolate()));
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}
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v8::Maybe<bool> Reject() {
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return GetInner()->Reject(isolate()->GetCurrentContext(),
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v8::Undefined(isolate()));
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}
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// Promise resolution is a microtask
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// We use the MicrotasksRunner to trigger the running of pending microtasks
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template <typename T>
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v8::Maybe<bool> Resolve(const T& value) {
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return GetInner()->Resolve(isolate()->GetCurrentContext(),
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mate::ConvertToV8(isolate(), value));
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}
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template <typename T>
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v8::Maybe<bool> Reject(const T& value) {
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return GetInner()->Reject(isolate()->GetCurrentContext(),
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mate::ConvertToV8(isolate(), value));
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}
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v8::Maybe<bool> RejectWithErrorMessage(const std::string& error);
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protected:
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virtual ~Promise();
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friend class base::RefCounted<Promise>;
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v8::Isolate* isolate_;
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private:
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v8::Local<v8::Promise::Resolver> GetInner() const {
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return resolver_.Get(isolate());
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}
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v8::Global<v8::Promise::Resolver> resolver_;
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DISALLOW_COPY_AND_ASSIGN(Promise);
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};
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} // namespace util
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} // namespace atom
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namespace mate {
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template <>
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struct Converter<atom::util::Promise*> {
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static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
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atom::util::Promise* val);
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// TODO(MarshallOfSound): Implement FromV8 to allow promise chaining
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// in native land
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// static bool FromV8(v8::Isolate* isolate,
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// v8::Local<v8::Value> val,
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// Promise* out);
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};
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} // namespace mate
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#endif // ATOM_COMMON_PROMISE_UTIL_H_
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