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promise.cc
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promise.cc
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// Copyright (c) 2018 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/common/gin_helper/promise.h"
namespace gin_helper {
PromiseBase::PromiseBase(v8::Isolate* isolate)
: PromiseBase(isolate,
v8::Promise::Resolver::New(isolate->GetCurrentContext())
.ToLocalChecked()) {}
PromiseBase::PromiseBase(v8::Isolate* isolate,
v8::Local<v8::Promise::Resolver> handle)
: isolate_(isolate),
context_(isolate, isolate->GetCurrentContext()),
resolver_(isolate, handle) {}
PromiseBase::PromiseBase(PromiseBase&&) = default;
PromiseBase::~PromiseBase() = default;
PromiseBase& PromiseBase::operator=(PromiseBase&&) = default;
v8::Maybe<bool> PromiseBase::Reject() {
gin_helper::Locker locker(isolate());
v8::HandleScope handle_scope(isolate());
gin_helper::MicrotasksScope microtasks_scope(isolate());
v8::Context::Scope context_scope(GetContext());
return GetInner()->Reject(GetContext(), v8::Undefined(isolate()));
}
v8::Maybe<bool> PromiseBase::Reject(v8::Local<v8::Value> except) {
gin_helper::Locker locker(isolate());
v8::HandleScope handle_scope(isolate());
gin_helper::MicrotasksScope microtasks_scope(isolate());
v8::Context::Scope context_scope(GetContext());
return GetInner()->Reject(GetContext(), except);
}
v8::Maybe<bool> PromiseBase::RejectWithErrorMessage(base::StringPiece message) {
gin_helper::Locker locker(isolate());
v8::HandleScope handle_scope(isolate());
gin_helper::MicrotasksScope microtasks_scope(isolate());
v8::Context::Scope context_scope(GetContext());
v8::Local<v8::Value> error =
v8::Exception::Error(gin::StringToV8(isolate(), message));
return GetInner()->Reject(GetContext(), (error));
}
v8::Local<v8::Context> PromiseBase::GetContext() const {
return v8::Local<v8::Context>::New(isolate_, context_);
}
v8::Local<v8::Promise> PromiseBase::GetHandle() const {
return GetInner()->GetPromise();
}
v8::Local<v8::Promise::Resolver> PromiseBase::GetInner() const {
return resolver_.Get(isolate());
}
// static
void Promise<void>::ResolvePromise(Promise<void> promise) {
if (gin_helper::Locker::IsBrowserProcess() &&
!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)) {
base::PostTask(
FROM_HERE, {content::BrowserThread::UI},
base::BindOnce([](Promise<void> promise) { promise.Resolve(); },
std::move(promise)));
} else {
promise.Resolve();
}
}
// static
v8::Local<v8::Promise> Promise<void>::ResolvedPromise(v8::Isolate* isolate) {
Promise<void> resolved(isolate);
resolved.Resolve();
return resolved.GetHandle();
}
v8::Maybe<bool> Promise<void>::Resolve() {
gin_helper::Locker locker(isolate());
v8::HandleScope handle_scope(isolate());
gin_helper::MicrotasksScope microtasks_scope(isolate());
v8::Context::Scope context_scope(GetContext());
return GetInner()->Resolve(GetContext(), v8::Undefined(isolate()));
}
} // namespace gin_helper