source: NonGTP/OpenEXR/include/Iex/IexMacros.h @ 855

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[855]1///////////////////////////////////////////////////////////////////////////
2//
3// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
4// Digital Ltd. LLC
5//
6// All rights reserved.
7//
8// Redistribution and use in source and binary forms, with or without
9// modification, are permitted provided that the following conditions are
10// met:
11// *       Redistributions of source code must retain the above copyright
12// notice, this list of conditions and the following disclaimer.
13// *       Redistributions in binary form must reproduce the above
14// copyright notice, this list of conditions and the following disclaimer
15// in the documentation and/or other materials provided with the
16// distribution.
17// *       Neither the name of Industrial Light & Magic nor the names of
18// its contributors may be used to endorse or promote products derived
19// from this software without specific prior written permission.
20//
21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33///////////////////////////////////////////////////////////////////////////
34
35
36
37#ifndef INCLUDED_IEXMACROS_H
38#define INCLUDED_IEXMACROS_H
39
40//--------------------------------------------------------------------
41//
42//      Macros which make throwing exceptions more convenient
43//
44//--------------------------------------------------------------------
45
46#include <sstream>
47
48
49//----------------------------------------------------------------------------
50// A macro to throw exceptions whose text is assembled using stringstreams.
51//
52// Example:
53//
54//      THROW (InputExc, "Syntax error in line " << line ", " << file << ".");
55//     
56//----------------------------------------------------------------------------
57
58#define THROW(type, text)       \
59    do                          \
60    {                           \
61        std::stringstream s;    \
62        s << text;              \
63        throw type (s);         \
64    }                           \
65    while (0)
66
67
68//----------------------------------------------------------------------------
69// Macros to add to or to replace the text of an exception.
70// The new text is assembled using stringstreams.
71//
72// Examples:
73//
74// Append to end of an exception's text:
75//
76//      catch (BaseExc &e)
77//      {
78//          APPEND_EXC (e, " Directory " << name << " does not exist.");
79//          throw;
80//      }
81//
82// Replace an exception's text:
83//
84//      catch (BaseExc &e)
85//      {
86//          REPLACE_EXC (e, "Directory " << name << " does not exist. " << e);
87//          throw;
88//      }
89//----------------------------------------------------------------------------
90
91#define APPEND_EXC(exc, text)   \
92    do                          \
93    {                           \
94        std::stringstream s;    \
95        s << text;              \
96        exc.append (s);         \
97    }                           \
98    while (0)
99
100#define REPLACE_EXC(exc, text)  \
101    do                          \
102    {                           \
103        std::stringstream s;    \
104        s << text;              \
105        exc.assign (s);         \
106    }                           \
107    while (0)
108
109
110//-------------------------------------------------------------
111// A macro to throw ErrnoExc exceptions whose text is assembled
112// using stringstreams:
113//
114// Example:
115//
116//      THROW_ERRNO ("Cannot open file " << name << " (%T).");
117//
118//-------------------------------------------------------------
119
120#define THROW_ERRNO(text)               \
121    do                                  \
122    {                                   \
123        std::stringstream s;            \
124        s << text;                      \
125        ::Iex::throwErrnoExc (s.str()); \
126    }                                   \
127    while (0)
128
129
130//-------------------------------------------------------------
131// A macro to throw exceptions if an assertion is false.
132//
133// Example:
134//
135//      ASSERT (NullExc, ptr != NULL, "Null pointer" );
136//
137//-------------------------------------------------------------
138
139#define ASSERT(assertion, type, text)   \
140    do                                  \
141    {                                   \
142        if( (assertion) == false )      \
143            THROW( type, text );        \
144    }                                   \
145    while (0)
146
147
148#endif
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