PBRT
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00001 00002 // 00003 // Copyright (c) 2002, Industrial Light & Magic, a division of Lucas 00004 // Digital Ltd. LLC 00005 // 00006 // All rights reserved. 00007 // 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are 00010 // met: 00011 // * Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // * Redistributions in binary form must reproduce the above 00014 // copyright notice, this list of conditions and the following disclaimer 00015 // in the documentation and/or other materials provided with the 00016 // distribution. 00017 // * Neither the name of Industrial Light & Magic nor the names of 00018 // its contributors may be used to endorse or promote products derived 00019 // from this software without specific prior written permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00024 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00025 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00027 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00028 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00029 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00030 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00031 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00034 00035 00036 00037 #ifndef INCLUDED_IEXMACROS_H 00038 #define INCLUDED_IEXMACROS_H 00039 00040 //-------------------------------------------------------------------- 00041 // 00042 // Macros which make throwing exceptions more convenient 00043 // 00044 //-------------------------------------------------------------------- 00045 00046 #include <sstream> 00047 00048 00049 //---------------------------------------------------------------------------- 00050 // A macro to throw exceptions whose text is assembled using stringstreams. 00051 // 00052 // Example: 00053 // 00054 // THROW (InputExc, "Syntax error in line " << line ", " << file << "."); 00055 // 00056 //---------------------------------------------------------------------------- 00057 00058 #define THROW(type, text) \ 00059 do \ 00060 { \ 00061 std::stringstream s; \ 00062 s << text; \ 00063 throw type (s); \ 00064 } \ 00065 while (0) 00066 00067 00068 //---------------------------------------------------------------------------- 00069 // Macros to add to or to replace the text of an exception. 00070 // The new text is assembled using stringstreams. 00071 // 00072 // Examples: 00073 // 00074 // Append to end of an exception's text: 00075 // 00076 // catch (BaseExc &e) 00077 // { 00078 // APPEND_EXC (e, " Directory " << name << " does not exist."); 00079 // throw; 00080 // } 00081 // 00082 // Replace an exception's text: 00083 // 00084 // catch (BaseExc &e) 00085 // { 00086 // REPLACE_EXC (e, "Directory " << name << " does not exist. " << e); 00087 // throw; 00088 // } 00089 //---------------------------------------------------------------------------- 00090 00091 #define APPEND_EXC(exc, text) \ 00092 do \ 00093 { \ 00094 std::stringstream s; \ 00095 s << text; \ 00096 exc.append (s); \ 00097 } \ 00098 while (0) 00099 00100 #define REPLACE_EXC(exc, text) \ 00101 do \ 00102 { \ 00103 std::stringstream s; \ 00104 s << text; \ 00105 exc.assign (s); \ 00106 } \ 00107 while (0) 00108 00109 00110 //------------------------------------------------------------- 00111 // A macro to throw ErrnoExc exceptions whose text is assembled 00112 // using stringstreams: 00113 // 00114 // Example: 00115 // 00116 // THROW_ERRNO ("Cannot open file " << name << " (%T)."); 00117 // 00118 //------------------------------------------------------------- 00119 00120 #define THROW_ERRNO(text) \ 00121 do \ 00122 { \ 00123 std::stringstream s; \ 00124 s << text; \ 00125 ::Iex::throwErrnoExc (s.str()); \ 00126 } \ 00127 while (0) 00128 00129 00130 //------------------------------------------------------------- 00131 // A macro to throw exceptions if an assertion is false. 00132 // 00133 // Example: 00134 // 00135 // ASSERT (ptr != NULL, NullExc, "Null pointer" ); 00136 // 00137 //------------------------------------------------------------- 00138 00139 #define ASSERT(assertion, type, text) \ 00140 do \ 00141 { \ 00142 if ((assertion) == false) \ 00143 THROW (type, text); \ 00144 } \ 00145 while (0) 00146 00147 00148 #endif