blob: 02fd3229d7c66b5854eb6e6a2922bbe927e3282a [file] [log] [blame]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef FLUTTER_FML_PLATFORM_DARWIN_CF_UTILS_H_
#define FLUTTER_FML_PLATFORM_DARWIN_CF_UTILS_H_
#include <CoreFoundation/CoreFoundation.h>
#include "flutter/fml/macros.h"
namespace fml {
template <class T>
class CFRef {
public:
CFRef() : instance_(nullptr) {}
// NOLINTNEXTLINE(google-explicit-constructor)
CFRef(T instance) : instance_(instance) {}
CFRef(const CFRef& other) : instance_(other.instance_) {
if (instance_) {
CFRetain(instance_);
}
}
CFRef(CFRef&& other) : instance_(other.instance_) {
other.instance_ = nullptr;
}
CFRef& operator=(CFRef&& other) {
Reset(other.Release());
return *this;
}
~CFRef() {
if (instance_ != nullptr) {
CFRelease(instance_);
}
instance_ = nullptr;
}
void Reset(T instance = nullptr) {
if (instance_ != nullptr) {
CFRelease(instance_);
}
instance_ = instance;
}
[[nodiscard]] T Release() {
auto instance = instance_;
instance_ = nullptr;
return instance;
}
// NOLINTNEXTLINE(google-explicit-constructor)
operator T() const { return instance_; }
explicit operator bool() const { return instance_ != nullptr; }
private:
T instance_;
CFRef& operator=(const CFRef&) = delete;
};
} // namespace fml
#endif // FLUTTER_FML_PLATFORM_DARWIN_CF_UTILS_H_