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