cef/include/base/internal/cef_scoped_block_mac.h

// Copyright (c) 2013 Google Inc. All rights reserved.
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// Do not include this header file directly. Use base/mac/scoped_block.h
// instead.

#ifndef CEF_INCLUDE_BASE_INTERNAL_CEF_SCOPED_BLOCK_MAC_H_
#define CEF_INCLUDE_BASE_INTERNAL_CEF_SCOPED_BLOCK_MAC_H_

#include <Block.h>

#include "include/base/cef_scoped_typeref_mac.h"

#if defined(__has_feature) && __has_feature(objc_arc)
#error \
    "Cannot include include/base/internal/cef_scoped_block_mac.h in file built with ARC."
#endif

namespace base {
namespace mac {

namespace cef_internal {

template <typename B>
struct ScopedBlockTraits {
  static B InvalidValue() { return nullptr; }
  static B Retain(B block) { return Block_copy(block); }
  static void Release(B block) { Block_release(block); }
};

}  // namespace cef_internal

// ScopedBlock<> is patterned after ScopedCFTypeRef<>, but uses Block_copy() and
// Block_release() instead of CFRetain() and CFRelease().
template <typename B>
using ScopedBlock = ScopedTypeRef<B, cef_internal::ScopedBlockTraits<B>>;

}  // namespace mac
}  // namespace base

#endif  // CEF_INCLUDE_BASE_INTERNAL_CEF_SCOPED_BLOCK_MAC_H_