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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/callback_list.h"
#include <utility>
#include "base/callback.h"
namespace base {
CallbackListSubscription::CallbackListSubscription() = default;
CallbackListSubscription::CallbackListSubscription(base::OnceClosure closure)
: closure_(std::move(closure)) {}
CallbackListSubscription::CallbackListSubscription(
CallbackListSubscription&& subscription)
: closure_(std::move(subscription.closure_)) {}
CallbackListSubscription& CallbackListSubscription::operator=(
CallbackListSubscription&& subscription) {
// Note: This still works properly for self-assignment.
Run();
closure_ = std::move(subscription.closure_);
return *this;
}
CallbackListSubscription::~CallbackListSubscription() {
Run();
}
void CallbackListSubscription::Run() {
if (closure_)
std::move(closure_).Run();
}
} // namespace base
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