comparison: scriptreader.cxx
scriptreader.cxx
- changeset 63
- 0557babc8675
- parent 54
- 8cc91ef94754
- child 67
- 0a202714eea4
equal
deleted
inserted
replaced
| 62:824ab7b28e3c | 63:0557babc8675 |
|---|---|
| 43 #include "string.h" | 43 #include "string.h" |
| 44 #include "str.h" | 44 #include "str.h" |
| 45 #include "common.h" | 45 #include "common.h" |
| 46 #include "scriptreader.h" | 46 #include "scriptreader.h" |
| 47 | 47 |
| 48 #define STORE_POSITION \ | |
| 49 bool _atnewline = atnewline; \ | |
| 50 unsigned int _curline = curline[fc]; \ | |
| 51 unsigned int _curchar = curchar[fc]; | |
| 52 | |
| 53 #define RESTORE_POSITION \ | |
| 54 atnewline = _atnewline; \ | |
| 55 curline[fc] = _curline; \ | |
| 56 curchar[fc] = _curchar; | |
| 57 | |
| 48 // ============================================================================ | 58 // ============================================================================ |
| 49 ScriptReader::ScriptReader (str path) { | 59 ScriptReader::ScriptReader (str path) { |
| 50 token = ""; | 60 token = ""; |
| 51 prevtoken = ""; | 61 prevtoken = ""; |
| 52 prevpos = 0; | 62 prevpos = 0; |
| 150 // ============================================================================ | 160 // ============================================================================ |
| 151 // Peeks the next character | 161 // Peeks the next character |
| 152 char ScriptReader::PeekChar (int offset) { | 162 char ScriptReader::PeekChar (int offset) { |
| 153 // Store current position | 163 // Store current position |
| 154 long curpos = ftell (fp[fc]); | 164 long curpos = ftell (fp[fc]); |
| 165 STORE_POSITION | |
| 155 | 166 |
| 156 // Forward by offset | 167 // Forward by offset |
| 157 fseek (fp[fc], offset, SEEK_CUR); | 168 fseek (fp[fc], offset, SEEK_CUR); |
| 158 | 169 |
| 159 // Read the character | 170 // Read the character |
| 164 return 0; | 175 return 0; |
| 165 } | 176 } |
| 166 | 177 |
| 167 // Rewind back | 178 // Rewind back |
| 168 fseek (fp[fc], curpos, SEEK_SET); | 179 fseek (fp[fc], curpos, SEEK_SET); |
| 180 RESTORE_POSITION | |
| 169 | 181 |
| 170 return c[0]; | 182 return c[0]; |
| 171 } | 183 } |
| 172 | 184 |
| 173 // ============================================================================ | 185 // ============================================================================ |
| 265 // Returns the next token without advancing the cursor. | 277 // Returns the next token without advancing the cursor. |
| 266 str ScriptReader::PeekNext (int offset) { | 278 str ScriptReader::PeekNext (int offset) { |
| 267 // Store current information | 279 // Store current information |
| 268 str storedtoken = token; | 280 str storedtoken = token; |
| 269 int cpos = ftell (fp[fc]); | 281 int cpos = ftell (fp[fc]); |
| 282 STORE_POSITION | |
| 270 | 283 |
| 271 // Advance on the token. | 284 // Advance on the token. |
| 272 while (offset >= 0) { | 285 while (offset >= 0) { |
| 273 if (!Next (true)) | 286 if (!Next (true)) |
| 274 return ""; | 287 return ""; |
| 279 | 292 |
| 280 // Restore position | 293 // Restore position |
| 281 fseek (fp[fc], cpos, SEEK_SET); | 294 fseek (fp[fc], cpos, SEEK_SET); |
| 282 pos[fc]--; | 295 pos[fc]--; |
| 283 token = storedtoken; | 296 token = storedtoken; |
| 297 RESTORE_POSITION | |
| 284 return tmp; | 298 return tmp; |
| 285 } | 299 } |
| 286 | 300 |
| 287 // ============================================================================ | 301 // ============================================================================ |
| 288 void ScriptReader::Seek (unsigned int n, int origin) { | 302 void ScriptReader::Seek (unsigned int n, int origin) { |
| 335 } | 349 } |
| 336 | 350 |
| 337 // ============================================================================ | 351 // ============================================================================ |
| 338 void ScriptReader::ParserMessage (const char* header, char* message) { | 352 void ScriptReader::ParserMessage (const char* header, char* message) { |
| 339 if (fc >= 0 && fc < MAX_FILESTACK) | 353 if (fc >= 0 && fc < MAX_FILESTACK) |
| 340 fprintf (stderr, "%sIn file %s, at line %u, col %u: %s\n", | 354 fprintf (stderr, "%s%s:%u:%u: %s\n", |
| 341 header, filepath[fc], curline[fc], curchar[fc], message); | 355 header, filepath[fc], curline[fc], curchar[fc], message); |
| 342 else | 356 else |
| 343 fprintf (stderr, "%s%s\n", header, message); | 357 fprintf (stderr, "%s%s\n", header, message); |
| 344 } | 358 } |
| 345 | 359 |
