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/* -*- 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/. */
#ifndef MozPromiseInlines_h_
#define MozPromiseInlines_h_
#include <type_traits>
#include "mozilla/MozPromise.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/PromiseNativeHandler.h"
namespace mozilla {
// Creates a C++ MozPromise from its JS counterpart, dom::Promise.
// FromDomPromise currently only supports primitive types (int8/16/32, float,
// double) And the reject value type must be a nsresult.
template <typename ResolveValueT, typename RejectValueT, bool IsExclusive>
RefPtr<MozPromise<ResolveValueT, RejectValueT, IsExclusive>>
MozPromise<ResolveValueT, RejectValueT, IsExclusive>::FromDomPromise(
dom::Promise* aDOMPromise) {
static_assert(std::is_same_v<RejectValueType, nsresult>,
"Reject type must be nsresult");
RefPtr<Private> p = new Private(__func__);
RefPtr<dom::DomPromiseListener> listener = new dom::DomPromiseListener(
[p](JSContext* aCx, JS::Handle<JS::Value> aValue) {
ResolveValueT value;
bool ok = dom::ValueToPrimitive<ResolveValueT,
dom::ConversionBehavior::eDefault>(
aCx, aValue, "Resolution value", &value);
if (!ok) {
p->Reject(NS_ERROR_FAILURE, __func__);
return;
}
p->Resolve(value, __func__);
},
[p](nsresult aError) { p->Reject(aError, __func__); });
aDOMPromise->AppendNativeHandler(listener);
return p;
}
} // namespace mozilla
#endif
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