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// Copyright (c) 2010 The Chromium 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 BASE_MAC_SCOPED_AEDESC_H_
#define BASE_MAC_SCOPED_AEDESC_H_
#import <CoreServices/CoreServices.h>
#include "base/macros.h"
namespace base {
namespace mac {
// The ScopedAEDesc is used to scope AppleEvent descriptors. On creation,
// it will store a NULL descriptor. On destruction, it will dispose of the
// descriptor.
//
// This class is parameterized for additional type safety checks. You can use
// the generic AEDesc type by not providing a template parameter:
// ScopedAEDesc<> desc;
template <typename AEDescType = AEDesc>
class ScopedAEDesc {
public:
ScopedAEDesc() {
AECreateDesc(typeNull, NULL, 0, &desc_);
}
~ScopedAEDesc() {
AEDisposeDesc(&desc_);
}
// Used for in parameters.
operator const AEDescType*() {
return &desc_;
}
// Used for out parameters.
AEDescType* OutPointer() {
return &desc_;
}
private:
AEDescType desc_;
DISALLOW_COPY_AND_ASSIGN(ScopedAEDesc);
};
} // namespace mac
} // namespace base
#endif // BASE_MAC_SCOPED_AEDESC_H_
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