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Diffstat (limited to 'libs/appleutility/CoreAudio/PublicUtility/CABool.h')
-rw-r--r-- | libs/appleutility/CoreAudio/PublicUtility/CABool.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/libs/appleutility/CoreAudio/PublicUtility/CABool.h b/libs/appleutility/CoreAudio/PublicUtility/CABool.h new file mode 100644 index 0000000000..719fd74bb2 --- /dev/null +++ b/libs/appleutility/CoreAudio/PublicUtility/CABool.h @@ -0,0 +1,89 @@ +/* + File: CABool.h + Abstract: Part of CoreAudio Utility Classes + Version: 1.1 + + Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple + Inc. ("Apple") in consideration of your agreement to the following + terms, and your use, installation, modification or redistribution of + this Apple software constitutes acceptance of these terms. If you do + not agree with these terms, please do not use, install, modify or + redistribute this Apple software. + + In consideration of your agreement to abide by the following terms, and + subject to these terms, Apple grants you a personal, non-exclusive + license, under Apple's copyrights in this original Apple software (the + "Apple Software"), to use, reproduce, modify and redistribute the Apple + Software, with or without modifications, in source and/or binary forms; + provided that if you redistribute the Apple Software in its entirety and + without modifications, you must retain this notice and the following + text and disclaimers in all such redistributions of the Apple Software. + Neither the name, trademarks, service marks or logos of Apple Inc. may + be used to endorse or promote products derived from the Apple Software + without specific prior written permission from Apple. Except as + expressly stated in this notice, no other rights or licenses, express or + implied, are granted by Apple herein, including but not limited to any + patent rights that may be infringed by your derivative works or by other + works in which the Apple Software may be incorporated. + + The Apple Software is provided by Apple on an "AS IS" basis. APPLE + MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION + THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS + FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND + OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. + + IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL + OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, + MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED + AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), + STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + + Copyright (C) 2014 Apple Inc. All Rights Reserved. + +*/ +#if !defined(__CABool_h__) +#define __CABool_h__ + +//============================================================================= +// Includes +//============================================================================= + +// System Includes +#include "CADebugMacros.h" +#include "CAException.h" + +//============================================================================= +// CABool +// +// This class implements a boolean value that has a third state that marks +// it as uninitialized. Accessing the value of an instance of this class that +// is uninitialized will throw an exception. +//============================================================================= + +class CABool +{ + +// Construction/Destruction +public: + CABool() : mValue(-1) {} + CABool(bool inValue) : mValue(inValue ? 1 : 0) {} + CABool(const CABool& inValue) : mValue(inValue.mValue) {} + ~CABool() {} + + CABool& operator=(bool inValue) { mValue = inValue; return *this; } + CABool& operator=(const CABool& inValue) { mValue = inValue.mValue; return *this; } + + operator bool() const { ThrowIf(mValue == -1, CAException('nope'), "CABool: uninitialized"); return mValue != 0; } + bool IsInitialized() const { return mValue != -1; } + void Uninitialize() { mValue = -1; } + +private: + SInt32 mValue; + + CABool(const void*); // prevent accidental instantiation with a pointer via bool constructor +}; + +#endif |