gecko-dev/dom/promise/PromiseNativeHandler.cpp

57 строки
1.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "PromiseNativeHandler.h"
#include "mozilla/dom/Promise.h"
#include "nsISupportsImpl.h"
namespace mozilla {
namespace dom {
NS_IMPL_ISUPPORTS0(DomPromiseListener)
DomPromiseListener::DomPromiseListener(CallbackTypeResolved&& aResolve,
CallbackTypeRejected&& aReject)
: mResolve(std::move(aResolve)), mReject(std::move(aReject)) {}
DomPromiseListener::~DomPromiseListener() {
if (mReject) {
mReject(NS_BINDING_ABORTED);
}
}
void DomPromiseListener::ResolvedCallback(JSContext* aCx,
JS::Handle<JS::Value> aValue) {
if (mResolve) {
mResolve(aCx, aValue);
}
// Let's clear the lambdas in case we have a cycle to ourselves.
Clear();
}
void DomPromiseListener::RejectedCallback(JSContext* aCx,
JS::Handle<JS::Value> aValue) {
if (mReject) {
nsresult errorCode;
if (!aValue.isInt32()) {
errorCode = NS_ERROR_DOM_NOT_NUMBER_ERR;
} else {
errorCode = nsresult(aValue.toInt32());
}
mReject(errorCode);
}
// Let's clear the lambdas in case we have a cycle to ourselves.
Clear();
}
void DomPromiseListener::Clear() {
mResolve = nullptr;
mReject = nullptr;
}
} // namespace dom
} // namespace mozilla