ref_ptr_internal.h

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// 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_MEMORY_REF_PTR_INTERNAL_H_
#define FLUTTER_FML_MEMORY_REF_PTR_INTERNAL_H_
 
#include <utility>
 
#include "flutter/fml/macros.h"
 
namespace fml {
 
template <typename T>
class RefPtr;
 
template <typename T>
RefPtr<T> AdoptRef(T* ptr);
 
namespace internal {
 
// This is a wrapper class that can be friended for a particular |T|, if you
// want to make |T|'s constructor private, but still use |MakeRefCounted()|
// (below). (You can't friend partial specializations.) See |MakeRefCounted()|
// and |FML_FRIEND_MAKE_REF_COUNTED()|.
template <typename T>
class MakeRefCountedHelper final {
 public:
  template <typename... Args>
  static RefPtr<T> MakeRefCounted(Args&&... args) {
    return AdoptRef<T>(new T(std::forward<Args>(args)...));
  }
};
 
}  // namespace internal
}  // namespace fml
 
#endif  // FLUTTER_FML_MEMORY_REF_PTR_INTERNAL_H_