comparison: common.h
common.h
- changeset 37
- c349dca807f9
- parent 36
- a8838b5f1213
- child 41
- 47e686c96d8f
equal
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inserted
replaced
| 36:a8838b5f1213 | 37:c349dca807f9 |
|---|---|
| 124 #ifndef __MAIN_CXX__ | 124 #ifndef __MAIN_CXX__ |
| 125 extern const char** g_Keywords; | 125 extern const char** g_Keywords; |
| 126 #endif | 126 #endif |
| 127 bool IsKeyword (str s); | 127 bool IsKeyword (str s); |
| 128 | 128 |
| 129 // Script mark -- also serves as reference type | |
| 130 struct ScriptMark { | |
| 131 int type; | |
| 132 str name; | |
| 133 size_t pos; | |
| 134 }; | |
| 135 | |
| 136 struct ScriptMarkReference { | |
| 137 unsigned int num; | |
| 138 size_t pos; | |
| 139 }; | |
| 140 | |
| 141 // ==================================================================== | |
| 142 // Finds a byte in the given value. | |
| 143 template <class T> unsigned char GetByteIndex (T a, unsigned int b) { | |
| 144 if (b >= sizeof (T)) | |
| 145 error ("CharByte: tried to get byte %u out of a %u-byte %s\n", | |
| 146 b, sizeof (T), typeid (T).name()); | |
| 147 | |
| 148 unsigned long p1 = pow<unsigned long> (256, b); | |
| 149 unsigned long p2 = pow<unsigned long> (256, b+1); | |
| 150 unsigned long r = (a % p2) / p1; | |
| 151 | |
| 152 if (r > 256) | |
| 153 error ("DataBuffer::CharByte: result %lu too big!", r); | |
| 154 | |
| 155 unsigned char ur = static_cast<unsigned char> (r); | |
| 156 return ur; | |
| 157 } | |
| 158 | |
| 129 #endif // __COMMON_H__ | 159 #endif // __COMMON_H__ |
