/[escript]/trunk/esysUtils/src/EsysAssert.h
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Annotation of /trunk/esysUtils/src/EsysAssert.h

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Revision 155 - (hide annotations)
Wed Nov 9 02:02:19 2005 UTC (13 years, 10 months ago) by jgs
File MIME type: text/plain
File size: 2743 byte(s)
move all directories from trunk/esys2 into trunk and remove esys2

1 jgs 102 // $Id$
2 jgs 82 /*
3     ******************************************************************************
4     * *
5     * COPYRIGHT ACcESS 2004 - All Rights Reserved *
6     * *
7     * This software is the property of ACcESS. No part of this code *
8     * may be copied in any form or by any means without the expressed written *
9     * consent of ACcESS. Copying, use or modification of this software *
10     * by any unauthorised person is illegal unless that person has a software *
11     * license agreement with ACcESS. *
12     * *
13     ******************************************************************************
14     */
15    
16 jgs 102 #if !defined escript_EsysAssert_20040330_H
17 jgs 82 #define escript_EsysAssert_20040330_H
18    
19     /**
20     \brief
21     EsysAssert is a MACRO that will throw an exception if the boolean
22 jgs 102 condition specified is false.
23 jgs 82
24     Description:
25     EsysAssert is conditionally compiled into code only when DOASSERT is
26     defined. When DOASSERT is not defined, the EsysAssert statement is
27     entirely removed from code.
28     */
29    
30     //
31     // Note that the ANSI C Standard requires all headers to be idempotent except
32 jgs 102 // <assert.h> which is explicitly required not to be idempotent (section 4.1.2).
33 jgs 82 // This version of EsysAssert follows this requirement, consequently this
34 jgs 102 // part of the header is intentionally outside the single pass guard.
35 jgs 82 //
36    
37     #undef EsysAssert
38    
39     #if defined DOASSERT
40 jgs 102
41 jgs 82 //
42     // DOASSERT is defined, replace EsysAssert with Exception throw
43     //
44 jgs 102
45 jgs 82 #include "EsysAssertException.h"
46     #include <sstream>
47    
48     namespace esysUtils {
49    
50     class ErrStream
51     {
52     public:
53     template <typename Tmpl>
54     ErrStream& operator<<(Tmpl t)
55     {
56     std::stringstream str;
57     str << t;
58     m_msg += str.str();
59    
60     return *this;
61     }
62    
63     const std::string &toString() const
64     {
65     return m_msg;
66     }
67    
68     private:
69     std::string m_msg;
70     };
71    
72     inline std::ostream& operator<<(std::ostream& oStream, const ErrStream& errStream)
73     {
74     oStream << errStream.toString();
75     return oStream;
76     }
77    
78     }
79    
80     #define EsysAssert(AssertTest,AssertMessage) \
81 jgs 102 (void)((AssertTest) || \
82     ((esysUtils::EsysAssertException::assertFailure(#AssertTest, __DATE__, __FILE__, __LINE__, \
83     (esysUtils::ErrStream()<<AssertMessage).toString())),0),0)
84 jgs 82
85     #else
86 jgs 102
87 jgs 82 //
88     // DOASSERT os not defined, replace EsysAssert with "NO-OP"
89     //
90 jgs 102
91 jgs 82 #define EsysAssert(AssertTest,AssertMessage) ((void)0)
92    
93     #endif
94    
95     #endif

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