/[escript]/trunk/esys2/esysUtils/src/EsysAssert.h
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Annotation of /trunk/esys2/esysUtils/src/EsysAssert.h

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Revision 100 - (hide annotations)
Wed Dec 15 03:48:48 2004 UTC (15 years, 1 month ago) by jgs
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1 jgs 82 /*
2     ******************************************************************************
3     * *
4     * COPYRIGHT ACcESS 2004 - All Rights Reserved *
5     * *
6     * This software is the property of ACcESS. No part of this code *
7     * may be copied in any form or by any means without the expressed written *
8     * consent of ACcESS. Copying, use or modification of this software *
9     * by any unauthorised person is illegal unless that person has a software *
10     * license agreement with ACcESS. *
11     * *
12     ******************************************************************************
13     */
14    
15 jgs 100 #if !defined escript_EsysAssert_20040330_H
16 jgs 82 #define escript_EsysAssert_20040330_H
17    
18     /**
19     \brief
20     EsysAssert is a MACRO that will throw an exception if the boolean
21 jgs 100 condition is false.
22 jgs 82
23     Description:
24     EsysAssert is conditionally compiled into code only when DOASSERT is
25     defined. When DOASSERT is not defined, the EsysAssert statement is
26     entirely removed from code.
27     */
28    
29     //
30     // Note that the ANSI C Standard requires all headers to be idempotent except
31 jgs 100 // <assert.h> which is explicitly required not to be idempotent
32     // (section 4.1.2).
33 jgs 82 // This version of EsysAssert follows this requirement, consequently this
34 jgs 100 // part of the header is intentionally outside the single pass guard
35 jgs 82 //
36    
37     #undef EsysAssert
38    
39     #if defined DOASSERT
40     //
41     // DOASSERT is defined, replace EsysAssert with Exception throw
42     //
43     #include "EsysAssertException.h"
44     #include <sstream>
45    
46     namespace esysUtils {
47    
48     class ErrStream
49     {
50     public:
51     template <typename Tmpl>
52     ErrStream& operator<<(Tmpl t)
53     {
54     std::stringstream str;
55     str << t;
56     m_msg += str.str();
57    
58     return *this;
59     }
60    
61     const std::string &toString() const
62     {
63     return m_msg;
64     }
65    
66     private:
67     std::string m_msg;
68     };
69    
70     inline std::ostream& operator<<(std::ostream& oStream, const ErrStream& errStream)
71     {
72     oStream << errStream.toString();
73     return oStream;
74     }
75    
76     }
77    
78     #define EsysAssert(AssertTest,AssertMessage) \
79 jgs 100 (void)((AssertTest) || ((esysUtils::EsysAssertException::assertFailure(#AssertTest, __DATE__, \
80     __FILE__, __LINE__, \
81     (esysUtils::ErrStream()<<AssertMessage).toString())),0),0)
82 jgs 82
83     #else
84     //
85     // DOASSERT os not defined, replace EsysAssert with "NO-OP"
86     //
87     #define EsysAssert(AssertTest,AssertMessage) ((void)0)
88    
89     #endif
90    
91     #endif
92 jgs 100
93    
94    
95    
96    

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