37 lines
982 B
C++
37 lines
982 B
C++
// Copyright 2013 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_MAC_SCOPED_BLOCK_H_
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#define BASE_MAC_SCOPED_BLOCK_H_
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#include <Block.h>
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#include "base/mac/scoped_typeref.h"
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#if defined(__has_feature) && __has_feature(objc_arc)
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#error "Cannot include base/mac/scoped_block.h in file built with ARC."
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#endif
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namespace base::mac {
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namespace internal {
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template <typename B>
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struct ScopedBlockTraits {
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static B InvalidValue() { return nullptr; }
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static B Retain(B block) { return Block_copy(block); }
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static void Release(B block) { Block_release(block); }
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};
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} // namespace internal
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// ScopedBlock<> is patterned after ScopedCFTypeRef<>, but uses Block_copy() and
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// Block_release() instead of CFRetain() and CFRelease().
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template <typename B>
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using ScopedBlock = ScopedTypeRef<B, internal::ScopedBlockTraits<B>>;
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} // namespace base::mac
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#endif // BASE_MAC_SCOPED_BLOCK_H_
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