// Copyright 2006-2008 The Chromium Authors. All rights reserved.
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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 MINI_CHROMIUM_BASE_MAC_SCOPED_NSOBJECT_H_
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#define MINI_CHROMIUM_BASE_MAC_SCOPED_NSOBJECT_H_
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#import <Foundation/Foundation.h>
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#include <type_traits>
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#include "base/compiler_specific.h"
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#include "base/mac/scoped_typeref.h"
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namespace base {
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namespace internal {
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template <typename NST>
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struct ScopedNSProtocolTraits {
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static NST InvalidValue() { return nil; }
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static NST Retain(NST nst) { return [nst retain]; }
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static void Release(NST nst) { [nst release]; }
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};
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} // namespace internal
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template <typename NST>
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class scoped_nsprotocol
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: public ScopedTypeRef<NST, internal::ScopedNSProtocolTraits<NST>> {
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public:
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using ScopedTypeRef<NST,
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internal::ScopedNSProtocolTraits<NST>>::ScopedTypeRef;
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NST autorelease() { return [this->release() autorelease]; }
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};
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template <class C>
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void swap(scoped_nsprotocol<C>& p1, scoped_nsprotocol<C>& p2) {
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p1.swap(p2);
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}
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template <class C>
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bool operator==(C p1, const scoped_nsprotocol<C>& p2) {
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return p1 == p2.get();
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}
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template <class C>
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bool operator!=(C p1, const scoped_nsprotocol<C>& p2) {
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return p1 != p2.get();
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}
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template <typename NST>
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class scoped_nsobject : public scoped_nsprotocol<NST*> {
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public:
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using scoped_nsprotocol<NST*>::scoped_nsprotocol;
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static_assert(std::is_same<NST, NSAutoreleasePool>::value == false,
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"Use ScopedNSAutoreleasePool instead");
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};
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template<>
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class scoped_nsobject<id> : public scoped_nsprotocol<id> {
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public:
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using scoped_nsprotocol<id>::scoped_nsprotocol;
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};
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} // namespace base
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#endif // MINI_CHROMIUM_BASE_MAC_SCOPED_NSOBJECT_H_
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