michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkHRESULT_DEFINED
michael@0: #define SkHRESULT_DEFINED
michael@0: 
michael@0: #include "SkTypes.h"
michael@0: 
michael@0: void SkTraceHR(const char* file, unsigned long line,
michael@0:                HRESULT hr, const char* msg);
michael@0: 
michael@0: #ifdef SK_DEBUG
michael@0: #define SK_TRACEHR(_hr, _msg) SkTraceHR(__FILE__, __LINE__, _hr, _msg)
michael@0: #else
michael@0: #define SK_TRACEHR(_hr, _msg) _hr
michael@0: #endif
michael@0: 
michael@0: #define HR_GENERAL(_ex, _msg, _ret) {\
michael@0:     HRESULT _hr = _ex;\
michael@0:     if (FAILED(_hr)) {\
michael@0:         SK_TRACEHR(_hr, _msg);\
michael@0:         return _ret;\
michael@0:     }\
michael@0: }
michael@0: 
michael@0: //@{
michael@0: /**
michael@0: These macros are for reporting HRESULT errors.
michael@0: The expression will be evaluated.
michael@0: If the resulting HRESULT SUCCEEDED then execution will continue normally.
michael@0: If the HRESULT FAILED then the macro will return from the current function.
michael@0: In variants ending with 'M' the given message will be traced when FAILED.
michael@0: The HR variants will return the HRESULT when FAILED.
michael@0: The HRB variants will return false when FAILED.
michael@0: The HRN variants will return NULL when FAILED.
michael@0: The HRV variants will simply return when FAILED.
michael@0: The HRZ variants will return 0 when FAILED.
michael@0: */
michael@0: #define HR(ex) HR_GENERAL(ex, NULL, _hr)
michael@0: #define HRM(ex, msg) HR_GENERAL(ex, msg, _hr)
michael@0: 
michael@0: #define HRB(ex) HR_GENERAL(ex, NULL, false)
michael@0: #define HRBM(ex, msg) HR_GENERAL(ex, msg, false)
michael@0: 
michael@0: #define HRN(ex) HR_GENERAL(ex, NULL, NULL)
michael@0: #define HRNM(ex, msg) HR_GENERAL(ex, msg, NULL)
michael@0: 
michael@0: #define HRV(ex) HR_GENERAL(ex, NULL, )
michael@0: #define HRVM(ex, msg) HR_GENERAL(ex, msg, )
michael@0: 
michael@0: #define HRZ(ex) HR_GENERAL(ex, NULL, 0)
michael@0: #define HRZM(ex, msg) HR_GENERAL(ex, msg, 0)
michael@0: //@}
michael@0: #endif