| 1 | /** @file
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| 2 | * MS COM / XPCOM Abstraction Layer - Assertion macros for COM/XPCOM.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2017 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * The contents of this file may alternatively be used under the terms
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| 17 | * of the Common Development and Distribution License Version 1.0
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| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 19 | * VirtualBox OSE distribution, in which case the provisions of the
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| 20 | * CDDL are applicable instead of those of the GPL.
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| 21 | *
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| 22 | * You may elect to license modified versions of this file under the
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| 23 | * terms and conditions of either the GPL or the CDDL or both.
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| 24 | */
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| 25 |
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| 26 | #ifndef ___VBox_com_assert_h
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| 27 | #define ___VBox_com_assert_h
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| 28 |
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| 29 | #include <iprt/assert.h>
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| 30 |
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| 31 | /** @defgroup grp_com_assert Assertion Macros for COM/XPCOM
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| 32 | * @ingroup grp_com
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| 33 | * @{
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| 34 | */
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| 35 |
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| 36 |
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| 37 | /**
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| 38 | * Asserts that the COM result code is succeeded in strict builds.
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| 39 | * In non-strict builds the result code will be NOREF'ed to kill compiler warnings.
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| 40 | *
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| 41 | * @param hrc The COM result code
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| 42 | */
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| 43 | #define AssertComRC(hrc) \
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| 44 | do { AssertMsg(SUCCEEDED(hrc), ("COM RC = %Rhrc (0x%08X)\n", hrc, hrc)); NOREF(hrc); } while (0)
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| 45 |
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| 46 | /**
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| 47 | * Same as AssertComRC, except the caller already knows we failed.
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| 48 | *
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| 49 | * @param hrc The COM result code
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| 50 | */
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| 51 | #define AssertComRCFailed(hrc) \
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| 52 | do { AssertMsgFailed(("COM RC = %Rhrc (0x%08X)\n", hrc, hrc)); NOREF(hrc); } while (0)
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| 53 |
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| 54 | /**
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| 55 | * A special version of AssertComRC that returns the given expression
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| 56 | * if the result code is failed.
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| 57 | *
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| 58 | * @param hrc The COM result code
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| 59 | * @param RetExpr The expression to return
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| 60 | */
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| 61 | #define AssertComRCReturn(hrc, RetExpr) \
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| 62 | AssertMsgReturn(SUCCEEDED(hrc), ("COM RC = %Rhrc (0x%08X)\n", hrc, hrc), RetExpr)
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| 63 |
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| 64 | /**
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| 65 | * A special version of AssertComRC that returns the given result code
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| 66 | * if it is failed.
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| 67 | *
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| 68 | * @param hrc The COM result code
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| 69 | */
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| 70 | #define AssertComRCReturnRC(hrc) \
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| 71 | AssertMsgReturn(SUCCEEDED(hrc), ("COM RC = %Rhrc (0x%08X)\n", hrc, hrc), hrc)
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| 72 |
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| 73 | /**
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| 74 | * A special version of AssertComRC that returns if the result code is failed.
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| 75 | *
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| 76 | * @param hrc The COM result code
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| 77 | */
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| 78 | #define AssertComRCReturnVoid(hrc) \
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| 79 | AssertMsgReturnVoid(SUCCEEDED(hrc), ("COM RC = %Rhrc (0x%08X)\n", hrc, hrc))
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| 80 |
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| 81 | /**
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| 82 | * A special version of AssertComRC that evaluates the given expression and
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| 83 | * breaks if the result code is failed.
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| 84 | *
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| 85 | * @param hrc The COM result code
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| 86 | * @param PreBreakExpr The expression to evaluate on failure.
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| 87 | */
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| 88 | #define AssertComRCBreak(hrc, PreBreakExpr) \
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| 89 | if (!SUCCEEDED(hrc)) { AssertComRCFailed(hrc); PreBreakExpr; break; } else do {} while (0)
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| 90 |
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| 91 | /**
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| 92 | * A special version of AssertComRC that evaluates the given expression and
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| 93 | * throws it if the result code is failed.
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| 94 | *
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| 95 | * @param hrc The COM result code
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| 96 | * @param ThrowMeExpr The expression which result to be thrown on failure.
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| 97 | */
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| 98 | #define AssertComRCThrow(hrc, ThrowMeExpr) \
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| 99 | do { if (SUCCEEDED(hrc)) { /*likely*/} else { AssertComRCFailed(hrc); throw (ThrowMeExpr); } } while (0)
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| 100 |
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| 101 | /**
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| 102 | * A special version of AssertComRC that just breaks if the result code is
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| 103 | * failed.
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| 104 | *
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| 105 | * @param hrc The COM result code
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| 106 | */
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| 107 | #define AssertComRCBreakRC(hrc) \
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| 108 | if (!SUCCEEDED(hrc)) { AssertComRCFailed(hrc); break; } else do {} while (0)
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| 109 |
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| 110 | /**
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| 111 | * A special version of AssertComRC that just throws @a hrc if the result code
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| 112 | * is failed.
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| 113 | *
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| 114 | * @param hrc The COM result code
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| 115 | */
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| 116 | #define AssertComRCThrowRC(hrc) \
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| 117 | do { if (SUCCEEDED(hrc)) { /*likely*/ } else { AssertComRCFailed(hrc); throw hrc; } } while (0)
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| 118 |
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| 119 | /** @} */
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| 120 |
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| 121 | #endif // !___VBox_com_assert_h
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| 122 |
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