electron/atom/common/promise_util.cc

// 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 <string>

#include "atom/common/api/locker.h"
#include "atom/common/promise_util.h"

namespace atom {

namespace util {

Promise::Promise(v8::Isolate* isolate)
    : Promise(isolate,
              v8::Promise::Resolver::New(isolate->GetCurrentContext())
                  .ToLocalChecked()) {}

Promise::Promise(v8::Isolate* isolate, v8::Local<v8::Promise::Resolver> handle)
    : isolate_(isolate),
      context_(isolate, isolate->GetCurrentContext()),
      resolver_(isolate, handle) {}

Promise::~Promise() = default;

Promise::Promise(Promise&&) = default;
Promise& Promise::operator=(Promise&&) = default;

v8::Maybe<bool> Promise::RejectWithErrorMessage(const std::string& string) {
  v8::HandleScope handle_scope(isolate());
  v8::MicrotasksScope script_scope(isolate(),
                                   v8::MicrotasksScope::kRunMicrotasks);
  v8::Context::Scope context_scope(
      v8::Local<v8::Context>::New(isolate(), GetContext()));

  v8::Local<v8::String> error_message =
      v8::String::NewFromUtf8(isolate(), string.c_str(),
                              v8::NewStringType::kNormal,
                              static_cast<int>(string.size()))
          .ToLocalChecked();
  v8::Local<v8::Value> error = v8::Exception::Error(error_message);
  return Reject(error);
}

v8::Local<v8::Promise> Promise::GetHandle() const {
  return GetInner()->GetPromise();
}

CopyablePromise::CopyablePromise(const Promise& promise)
    : isolate_(promise.isolate()), handle_(isolate_, promise.GetInner()) {}

CopyablePromise::CopyablePromise(const CopyablePromise&) = default;

CopyablePromise::~CopyablePromise() = default;

Promise CopyablePromise::GetPromise() const {
  return Promise(isolate_,
                 v8::Local<v8::Promise::Resolver>::New(isolate_, handle_));
}

}  // namespace util

}  // namespace atom

namespace mate {

v8::Local<v8::Value> mate::Converter<atom::util::Promise>::ToV8(
    v8::Isolate*,
    const atom::util::Promise& val) {
  return val.GetHandle();
}

}  // namespace mate