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annotate lwcc/preproc.c @ 512:7e41d6123175
Make conditional suppression actually hide comments and blank lines
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Sat, 04 Jul 2020 16:21:08 -0600 |
| parents | 836dc5371980 |
| children |
| rev | line source |
|---|---|
| 296 | 1 /* |
| 2 lwcc/preproc.c | |
| 3 | |
| 4 Copyright © 2013 William Astle | |
| 5 | |
| 6 This file is part of LWTOOLS. | |
| 7 | |
| 8 LWTOOLS is free software: you can redistribute it and/or modify it under the | |
| 9 terms of the GNU General Public License as published by the Free Software | |
| 10 Foundation, either version 3 of the License, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 16 more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License along with | |
| 19 this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 */ | |
| 21 | |
| 300 | 22 #include <stdio.h> |
| 23 #include <stdlib.h> | |
| 296 | 24 #include <string.h> |
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25 #include <time.h> |
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26 #include <unistd.h> |
| 296 | 27 |
| 28 #include <lw_alloc.h> | |
| 29 #include <lw_string.h> | |
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30 #include <lw_strbuf.h> |
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31 #include <lw_strpool.h> |
| 296 | 32 |
| 33 #include "cpp.h" | |
| 34 #include "symbol.h" | |
| 35 #include "token.h" | |
| 36 | |
| 37 static int expand_macro(struct preproc_info *, char *); | |
| 38 static void process_directive(struct preproc_info *); | |
| 39 static long eval_expr(struct preproc_info *); | |
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40 extern struct token *preproc_lex_next_token(struct preproc_info *); |
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41 static long preproc_numval(struct preproc_info *, struct token *); |
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42 static int eval_escape(char **); |
| 313 | 43 extern int preproc_lex_fetch_byte(struct preproc_info *); |
| 44 extern void preproc_lex_unfetch_byte(struct preproc_info *, int); | |
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45 |
| 296 | 46 |
| 47 struct token *preproc_next_processed_token(struct preproc_info *pp) | |
| 48 { | |
| 49 struct token *ct; | |
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50 |
| 296 | 51 again: |
| 52 ct = preproc_next_token(pp); | |
| 53 if (ct -> ttype == TOK_EOF) | |
| 54 return ct; | |
| 55 if (ct -> ttype == TOK_EOL) | |
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56 { |
| 296 | 57 pp -> ppeolseen = 1; |
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58 return ct; |
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59 } |
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60 |
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61 if (ct -> ttype == TOK_HASH && pp -> ppeolseen == 1) |
| 296 | 62 { |
| 63 // preprocessor directive | |
| 64 process_directive(pp); | |
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65 goto again; |
| 296 | 66 } |
| 67 // if we're in a false section, don't return the token; keep scanning | |
| 68 if (pp -> skip_level) | |
| 69 goto again; | |
| 70 | |
| 71 if (ct -> ttype != TOK_WSPACE) | |
| 72 pp -> ppeolseen = 0; | |
| 73 | |
| 74 if (ct -> ttype == TOK_IDENT) | |
| 75 { | |
| 76 // possible macro expansion | |
| 77 if (expand_macro(pp, ct -> strval)) | |
| 78 goto again; | |
| 79 } | |
| 80 | |
| 81 return ct; | |
| 82 } | |
| 83 | |
| 84 static struct token *preproc_next_processed_token_nws(struct preproc_info *pp) | |
| 85 { | |
| 86 struct token *t; | |
| 87 | |
| 88 do | |
| 89 { | |
| 90 t = preproc_next_processed_token(pp); | |
| 91 } while (t -> ttype == TOK_WSPACE); | |
| 92 return t; | |
| 93 } | |
| 94 | |
| 95 static struct token *preproc_next_token_nws(struct preproc_info *pp) | |
| 96 { | |
| 97 struct token *t; | |
| 98 | |
| 99 do | |
| 100 { | |
| 101 t = preproc_next_token(pp); | |
| 102 } while (t -> ttype == TOK_WSPACE); | |
| 103 return t; | |
| 104 } | |
| 105 | |
| 106 static void skip_eol(struct preproc_info *pp) | |
| 107 { | |
| 108 struct token *t; | |
| 109 | |
| 110 if (pp -> curtok && pp -> curtok -> ttype == TOK_EOL) | |
| 111 return; | |
| 112 do | |
| 113 { | |
| 114 t = preproc_next_token(pp); | |
| 115 } while (t -> ttype != TOK_EOL); | |
| 116 } | |
| 117 | |
| 118 static void check_eol(struct preproc_info *pp) | |
| 119 { | |
| 120 struct token *t; | |
| 121 | |
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122 t = preproc_next_token_nws(pp); |
| 296 | 123 if (t -> ttype != TOK_EOL) |
| 124 preproc_throw_warning(pp, "Extra text after preprocessor directive"); | |
| 125 skip_eol(pp); | |
| 126 } | |
| 127 | |
| 128 static void dir_ifdef(struct preproc_info *pp) | |
| 129 { | |
| 130 struct token *ct; | |
| 131 | |
| 132 if (pp -> skip_level) | |
| 133 { | |
| 134 pp -> skip_level++; | |
| 135 skip_eol(pp); | |
| 136 return; | |
| 137 } | |
| 138 | |
| 139 do | |
| 140 { | |
| 141 ct = preproc_next_token(pp); | |
| 142 } while (ct -> ttype == TOK_WSPACE); | |
| 143 | |
| 144 if (ct -> ttype != TOK_IDENT) | |
| 145 { | |
| 146 preproc_throw_error(pp, "Bad #ifdef"); | |
| 147 skip_eol(pp); | |
| 148 } | |
| 149 | |
| 150 if (symtab_find(pp, ct -> strval) == NULL) | |
| 151 { | |
| 152 pp -> skip_level++; | |
| 153 } | |
| 154 else | |
| 155 { | |
| 156 pp -> found_level++; | |
| 157 } | |
| 158 check_eol(pp); | |
| 159 } | |
| 160 | |
| 161 static void dir_ifndef(struct preproc_info *pp) | |
| 162 { | |
| 163 struct token *ct; | |
| 164 | |
| 165 if (pp -> skip_level) | |
| 166 { | |
| 167 pp -> skip_level++; | |
| 168 skip_eol(pp); | |
| 169 return; | |
| 170 } | |
| 171 | |
| 172 do | |
| 173 { | |
| 174 ct = preproc_next_token(pp); | |
| 175 } while (ct -> ttype == TOK_WSPACE); | |
| 176 | |
| 177 if (ct -> ttype != TOK_IDENT) | |
| 178 { | |
| 179 preproc_throw_error(pp, "Bad #ifdef"); | |
| 180 skip_eol(pp); | |
| 181 } | |
| 182 | |
| 183 if (symtab_find(pp, ct -> strval) != NULL) | |
| 184 { | |
| 185 pp -> skip_level++; | |
| 186 } | |
| 187 else | |
| 188 { | |
| 189 pp -> found_level++; | |
| 190 } | |
| 191 check_eol(pp); | |
| 192 } | |
| 193 | |
| 194 static void dir_if(struct preproc_info *pp) | |
| 195 { | |
| 196 if (pp -> skip_level || !eval_expr(pp)) | |
| 197 pp -> skip_level++; | |
| 198 else | |
| 199 pp -> found_level++; | |
| 200 } | |
| 201 | |
| 202 static void dir_elif(struct preproc_info *pp) | |
| 203 { | |
| 204 if (pp -> skip_level == 0) | |
| 205 pp -> else_skip_level = pp -> found_level; | |
| 206 if (pp -> skip_level) | |
| 207 { | |
| 208 if (pp -> else_skip_level > pp -> found_level) | |
| 209 ; | |
| 210 else if (--(pp -> skip_level) != 0) | |
| 211 pp -> skip_level++; | |
| 212 else if (eval_expr(pp)) | |
| 213 pp -> found_level++; | |
| 214 else | |
| 215 pp -> skip_level++; | |
| 216 } | |
| 217 else if (pp -> found_level) | |
| 218 { | |
| 219 pp -> skip_level++; | |
| 220 pp -> found_level--; | |
| 221 } | |
| 222 else | |
| 223 preproc_throw_error(pp, "#elif in non-conditional section"); | |
| 224 } | |
| 225 | |
| 226 static void dir_else(struct preproc_info *pp) | |
| 227 { | |
| 228 if (pp -> skip_level) | |
| 229 { | |
| 230 if (pp -> else_skip_level > pp -> found_level) | |
| 231 ; | |
| 232 else if (--(pp -> skip_level) != 0) | |
| 233 pp -> skip_level++; | |
| 234 else | |
| 235 pp -> found_level++; | |
| 236 } | |
| 237 else if (pp -> found_level) | |
| 238 { | |
| 239 pp -> skip_level++; | |
| 240 pp -> found_level--; | |
| 241 } | |
| 242 else | |
| 243 { | |
| 244 preproc_throw_error(pp, "#else in non-conditional section"); | |
| 245 } | |
| 246 if (pp -> else_level == pp -> found_level + pp -> skip_level) | |
| 247 { | |
| 248 preproc_throw_error(pp, "Too many #else"); | |
| 249 } | |
| 250 pp -> else_level = pp -> found_level + pp -> skip_level; | |
| 251 check_eol(pp); | |
| 252 } | |
| 253 | |
| 254 static void dir_endif(struct preproc_info *pp) | |
| 255 { | |
| 256 if (pp -> skip_level) | |
| 257 pp -> skip_level--; | |
| 258 else if (pp -> found_level) | |
| 259 pp -> found_level--; | |
| 260 else | |
| 261 preproc_throw_error(pp, "#endif in non-conditional section"); | |
| 262 if (pp -> skip_level == 0) | |
| 263 pp -> else_skip_level = 0; | |
| 264 pp -> else_level = 0; | |
| 265 check_eol(pp); | |
| 266 } | |
| 267 | |
| 268 static void dir_define(struct preproc_info *pp) | |
| 269 { | |
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270 struct token_list *tl = NULL; |
| 296 | 271 struct token *ct; |
| 272 int nargs = -1; | |
| 273 int vargs = 0; | |
| 274 char *mname = NULL; | |
| 275 | |
| 276 char **arglist = NULL; | |
| 277 | |
| 278 if (pp -> skip_level) | |
| 279 { | |
| 280 skip_eol(pp); | |
| 281 return; | |
| 282 } | |
| 283 | |
| 284 ct = preproc_next_token_nws(pp); | |
| 285 if (ct -> ttype != TOK_IDENT) | |
| 286 goto baddefine; | |
| 287 | |
| 288 mname = lw_strdup(ct -> strval); | |
| 289 ct = preproc_next_token(pp); | |
| 290 if (ct -> ttype == TOK_WSPACE) | |
| 291 { | |
| 292 /* object like macro */ | |
| 293 } | |
| 294 else if (ct -> ttype == TOK_EOL) | |
| 295 { | |
| 296 /* object like macro - empty value */ | |
| 297 goto out; | |
| 298 } | |
| 299 else if (ct -> ttype == TOK_OPAREN) | |
| 300 { | |
| 301 /* function like macro - parse args */ | |
| 302 nargs = 0; | |
| 303 vargs = 0; | |
| 304 for (;;) | |
| 305 { | |
| 306 ct = preproc_next_token_nws(pp); | |
| 307 if (ct -> ttype == TOK_EOL) | |
| 308 { | |
| 309 goto baddefine; | |
| 310 } | |
| 311 if (ct -> ttype == TOK_CPAREN) | |
| 312 break; | |
| 313 | |
| 314 if (ct -> ttype == TOK_IDENT) | |
| 315 { | |
| 316 /* parameter name */ | |
| 317 nargs++; | |
| 318 /* record argument name */ | |
| 319 arglist = lw_realloc(arglist, sizeof(char *) * nargs); | |
| 320 arglist[nargs - 1] = lw_strdup(ct -> strval); | |
| 321 | |
| 322 /* check for end of args or comma */ | |
| 323 ct = preproc_next_token_nws(pp); | |
| 324 if (ct -> ttype == TOK_CPAREN) | |
| 325 break; | |
| 326 else if (ct -> ttype == TOK_COMMA) | |
| 327 continue; | |
| 328 else | |
| 329 goto baddefine; | |
| 330 } | |
| 331 else if (ct -> ttype == TOK_ELLIPSIS) | |
| 332 { | |
| 333 /* variadic macro */ | |
| 334 vargs = 1; | |
| 335 ct = preproc_next_token_nws(pp); | |
| 336 if (ct -> ttype != TOK_CPAREN) | |
| 337 goto baddefine; | |
| 338 break; | |
| 339 } | |
| 340 else | |
| 341 goto baddefine; | |
| 342 } | |
| 343 } | |
| 344 else | |
| 345 { | |
| 346 baddefine: | |
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347 preproc_throw_error(pp, "bad #define", ct -> ttype); |
| 296 | 348 baddefine2: |
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349 token_list_destroy(tl); |
| 296 | 350 skip_eol(pp); |
| 351 lw_free(mname); | |
| 352 while (nargs > 0) | |
| 353 lw_free(arglist[--nargs]); | |
| 354 lw_free(arglist); | |
| 355 return; | |
| 356 } | |
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357 |
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358 tl = token_list_create(); |
| 296 | 359 for (;;) |
| 360 { | |
| 361 ct = preproc_next_token(pp); | |
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362 |
| 296 | 363 if (ct -> ttype == TOK_EOL) |
| 364 break; | |
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365 token_list_append(tl, token_dup(ct)); |
| 296 | 366 } |
| 367 out: | |
| 368 if (strcmp(mname, "defined") == 0) | |
| 369 { | |
| 370 preproc_throw_warning(pp, "attempt to define 'defined' as a macro not allowed"); | |
| 371 goto baddefine2; | |
| 372 } | |
| 373 else if (symtab_find(pp, mname) != NULL) | |
| 374 { | |
| 375 /* need to do a token compare between the old value and the new value | |
| 376 to decide whether to complain */ | |
| 377 preproc_throw_warning(pp, "%s previous defined", mname); | |
| 378 symtab_undef(pp, mname); | |
| 379 } | |
| 380 symtab_define(pp, mname, tl, nargs, arglist, vargs); | |
| 381 lw_free(mname); | |
| 382 while (nargs > 0) | |
| 383 lw_free(arglist[--nargs]); | |
| 384 lw_free(arglist); | |
| 385 /* no need to check for EOL here */ | |
| 386 } | |
| 387 | |
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388 void preproc_add_macro(struct preproc_info *pp, char *str) |
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389 { |
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390 char *s; |
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391 |
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392 pp -> lexstr = lw_strdup(str); |
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393 pp -> lexstrloc = 0; |
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394 s = strchr(pp -> lexstr, '='); |
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395 if (s) |
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396 *s = ' '; |
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397 |
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398 dir_define(pp); |
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399 |
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400 lw_free(pp -> lexstr); |
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401 pp -> lexstr = NULL; |
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402 pp -> lexstrloc = 0; |
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403 } |
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404 |
| 296 | 405 static void dir_undef(struct preproc_info *pp) |
| 406 { | |
| 407 struct token *ct; | |
| 408 if (pp -> skip_level) | |
| 409 { | |
| 410 skip_eol(pp); | |
| 411 return; | |
| 412 } | |
| 413 | |
| 414 do | |
| 415 { | |
| 416 ct = preproc_next_token(pp); | |
| 417 } while (ct -> ttype == TOK_WSPACE); | |
| 418 | |
| 419 if (ct -> ttype != TOK_IDENT) | |
| 420 { | |
| 421 preproc_throw_error(pp, "Bad #undef"); | |
| 422 skip_eol(pp); | |
| 423 } | |
| 424 | |
| 425 symtab_undef(pp, ct -> strval); | |
| 426 check_eol(pp); | |
| 427 } | |
| 428 | |
| 429 char *streol(struct preproc_info *pp) | |
| 430 { | |
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431 struct lw_strbuf *s; |
| 296 | 432 struct token *ct; |
| 433 int i; | |
| 434 | |
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435 s = lw_strbuf_new(); |
| 296 | 436 do |
| 437 { | |
| 438 ct = preproc_next_token(pp); | |
| 439 } while (ct -> ttype == TOK_WSPACE); | |
| 440 | |
| 441 while (ct -> ttype != TOK_EOL) | |
| 442 { | |
| 443 for (i = 0; ct -> strval[i]; i++) | |
|
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444 lw_strbuf_add(s, ct -> strval[i]); |
| 296 | 445 ct = preproc_next_token(pp); |
| 446 } | |
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447 return lw_strbuf_end(s); |
| 296 | 448 } |
| 449 | |
| 450 static void dir_error(struct preproc_info *pp) | |
| 451 { | |
| 452 char *s; | |
| 453 | |
| 454 if (pp -> skip_level) | |
| 455 { | |
| 456 skip_eol(pp); | |
| 457 return; | |
| 458 } | |
| 459 | |
| 460 s = streol(pp); | |
| 461 preproc_throw_error(pp, "%s", s); | |
| 462 lw_free(s); | |
| 463 } | |
| 464 | |
| 465 static void dir_warning(struct preproc_info *pp) | |
| 466 { | |
| 467 char *s; | |
| 468 | |
| 469 if (pp -> skip_level) | |
| 470 { | |
| 471 skip_eol(pp); | |
| 472 return; | |
| 473 } | |
| 474 | |
| 475 s = streol(pp); | |
| 476 preproc_throw_warning(pp, "%s", s); | |
| 477 lw_free(s); | |
| 478 } | |
| 479 | |
|
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480 static char *preproc_file_exists_in_dir(char *dir, char *fn) |
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481 { |
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482 int l; |
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483 char *f; |
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484 |
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485 l = snprintf(NULL, 0, "%s/%s", dir, fn); |
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486 f = lw_alloc(l + 1); |
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487 snprintf(f, l + 1, "%s/%s", dir, fn); |
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488 |
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489 if (access(f, R_OK) == 0) |
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490 return f; |
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491 lw_free(f); |
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492 return NULL; |
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493 } |
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494 |
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495 static char *preproc_find_file(struct preproc_info *pp, char *fn, int sys) |
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496 { |
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497 char *tstr; |
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498 char *pref; |
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499 char *rfn; |
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500 |
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501 /* pass through absolute paths, dumb as they are */ |
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502 if (fn[0] == '/') |
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503 return lw_strdup(fn); |
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504 |
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505 if (!sys) |
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506 { |
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507 /* look in the directory with the current file */ |
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508 tstr = strchr(pp -> fn, '/'); |
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509 if (!tstr) |
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510 pref = lw_strdup("."); |
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511 else |
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512 { |
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513 pref = lw_alloc(tstr - pp -> fn + 1); |
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514 memcpy(pref, pp -> fn, tstr - pp -> fn); |
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515 pref[tstr - pp -> fn] = 0; |
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516 } |
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517 rfn = preproc_file_exists_in_dir(pref, fn); |
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518 lw_free(pref); |
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519 if (rfn) |
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520 return rfn; |
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521 |
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522 /* look in the "quote" dir list */ |
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523 lw_stringlist_reset(pp -> quotelist); |
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524 for (pref = lw_stringlist_current(pp -> quotelist); pref; pref = lw_stringlist_next(pp -> quotelist)) |
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525 { |
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526 rfn = preproc_file_exists_in_dir(pref, fn); |
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527 if (rfn) |
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528 return rfn; |
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529 } |
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530 } |
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531 |
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532 /* look in the "include" dir list */ |
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533 lw_stringlist_reset(pp -> inclist); |
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534 for (pref = lw_stringlist_current(pp -> inclist); pref; pref = lw_stringlist_next(pp -> inclist)) |
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535 { |
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536 rfn = preproc_file_exists_in_dir(pref, fn); |
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537 if (rfn) |
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538 return rfn; |
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539 } |
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540 |
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541 /* the default search list is provided by the driver program */ |
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542 return NULL; |
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543 } |
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544 |
| 296 | 545 static void dir_include(struct preproc_info *pp) |
| 546 { | |
| 300 | 547 FILE *fp; |
| 548 struct token *ct; | |
| 549 int sys = 0; | |
| 550 char *fn; | |
|
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551 struct lw_strbuf *strbuf; |
| 300 | 552 int i; |
| 553 struct preproc_info *fs; | |
| 554 | |
| 555 ct = preproc_next_token_nws(pp); | |
|
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556 if (ct -> ttype == TOK_STR_LIT) |
| 300 | 557 { |
| 558 usrinc: | |
| 559 sys = strlen(ct -> strval); | |
| 560 fn = lw_alloc(sys - 1); | |
| 561 memcpy(fn, ct -> strval + 1, sys - 2); | |
|
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562 fn[sys - 2] = 0; |
| 300 | 563 sys = 0; |
| 564 goto doinc; | |
| 565 } | |
| 566 else if (ct -> ttype == TOK_LT) | |
| 567 { | |
|
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568 strbuf = lw_strbuf_new(); |
| 300 | 569 for (;;) |
| 570 { | |
|
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571 int c; |
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572 c = preproc_lex_fetch_byte(pp); |
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573 if (c == CPP_EOL) |
| 300 | 574 { |
|
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575 preproc_lex_unfetch_byte(pp, c); |
| 300 | 576 preproc_throw_error(pp, "Bad #include"); |
|
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577 lw_free(lw_strbuf_end(strbuf)); |
|
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578 break; |
| 300 | 579 } |
|
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580 if (c == '>') |
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581 break; |
|
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|
582 lw_strbuf_add(strbuf, c); |
| 300 | 583 } |
| 584 ct = preproc_next_token_nws(pp); | |
| 585 if (ct -> ttype != TOK_EOL) | |
| 586 { | |
| 587 preproc_throw_error(pp, "Bad #include"); | |
| 588 skip_eol(pp); | |
|
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589 lw_free(lw_strbuf_end(strbuf)); |
| 300 | 590 return; |
| 591 } | |
| 592 sys = 1; | |
|
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593 fn = lw_strbuf_end(strbuf); |
| 300 | 594 goto doinc; |
| 595 } | |
| 596 else | |
| 597 { | |
| 598 preproc_unget_token(pp, ct); | |
| 599 // computed include | |
| 600 ct = preproc_next_processed_token_nws(pp); | |
|
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601 if (ct -> ttype == TOK_STR_LIT) |
| 300 | 602 goto usrinc; |
| 603 else if (ct -> ttype == TOK_LT) | |
| 604 { | |
|
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605 strbuf = lw_strbuf_new(); |
| 300 | 606 for (;;) |
| 607 { | |
| 608 ct = preproc_next_processed_token(pp); | |
| 609 if (ct -> ttype == TOK_GT) | |
| 610 break; | |
| 611 if (ct -> ttype == TOK_EOL) | |
| 612 { | |
| 613 preproc_throw_error(pp, "Bad #include"); | |
|
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614 lw_free(lw_strbuf_end(strbuf)); |
| 300 | 615 return; |
| 616 } | |
| 617 for (i = 0; ct -> strval[i]; ct++) | |
| 618 { | |
|
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619 lw_strbuf_add(strbuf, ct -> strval[i]); |
| 300 | 620 } |
| 621 } | |
| 622 ct = preproc_next_processed_token_nws(pp); | |
| 623 if (ct -> ttype != TOK_EOL) | |
| 624 { | |
| 625 preproc_throw_error(pp, "Bad #include"); | |
| 626 skip_eol(pp); | |
|
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627 lw_free(lw_strbuf_end(strbuf)); |
| 300 | 628 return; |
| 629 } | |
| 630 sys = 1; | |
|
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631 fn = lw_strbuf_end(strbuf); |
| 300 | 632 goto doinc; |
| 633 } | |
| 634 else | |
| 635 { | |
| 636 skip_eol(pp); | |
| 637 preproc_throw_error(pp, "Bad #include"); | |
| 638 return; | |
| 639 } | |
| 640 } | |
| 641 doinc: | |
|
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642 fn = preproc_find_file(pp, fn, sys); |
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643 if (!fn) |
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644 goto badfile; |
| 300 | 645 fp = fopen(fn, "rb"); |
| 646 if (!fp) | |
| 647 { | |
|
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648 lw_free(fn); |
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649 badfile: |
|
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650 preproc_throw_error(pp, "Cannot open #include file %s - this is fatal", fn); |
| 300 | 651 exit(1); |
| 652 } | |
| 653 | |
| 654 /* save the current include file state, etc. */ | |
| 655 fs = lw_alloc(sizeof(struct preproc_info)); | |
| 656 *fs = *pp; | |
| 657 fs -> n = pp -> filestack; | |
|
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658 pp -> curtok = NULL; |
| 300 | 659 pp -> filestack = fs; |
|
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660 pp -> fn = lw_strpool_strdup(pp -> strpool, fn); |
|
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661 lw_free(fn); |
| 300 | 662 pp -> fp = fp; |
| 663 pp -> ra = CPP_NOUNG; | |
| 664 pp -> ppeolseen = 1; | |
| 665 pp -> eolstate = 0; | |
|
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666 pp -> lineno = 1; |
| 300 | 667 pp -> column = 0; |
| 668 pp -> qseen = 0; | |
| 669 pp -> ungetbufl = 0; | |
| 670 pp -> ungetbufs = 0; | |
| 671 pp -> ungetbuf = NULL; | |
| 672 pp -> unget = 0; | |
| 673 pp -> eolseen = 0; | |
| 674 pp -> nlseen = 0; | |
| 675 pp -> skip_level = 0; | |
| 676 pp -> found_level = 0; | |
| 677 pp -> else_level = 0; | |
| 678 pp -> else_skip_level = 0; | |
|
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|
679 pp -> tokqueue = NULL; |
| 300 | 680 // now get on with processing |
| 296 | 681 } |
| 682 | |
| 683 static void dir_line(struct preproc_info *pp) | |
| 684 { | |
| 300 | 685 struct token *ct; |
| 686 long lineno; | |
| 687 char *estr; | |
| 688 | |
| 689 lineno = -1; | |
| 690 | |
| 691 ct = preproc_next_processed_token_nws(pp); | |
| 692 if (ct -> ttype == TOK_NUMBER) | |
| 693 { | |
| 694 lineno = strtoul(ct -> strval, &estr, 10); | |
| 695 if (*estr) | |
| 696 { | |
| 697 preproc_throw_error(pp, "Bad #line"); | |
| 698 skip_eol(pp); | |
| 699 return; | |
| 700 } | |
| 701 } | |
| 702 else | |
| 703 { | |
| 704 preproc_throw_error(pp, "Bad #line"); | |
| 705 skip_eol(pp); | |
| 706 return; | |
| 707 } | |
| 708 ct = preproc_next_processed_token_nws(pp); | |
| 709 if (ct -> ttype == TOK_EOL) | |
| 710 { | |
| 711 pp -> lineno = lineno; | |
| 712 return; | |
| 713 } | |
|
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714 if (ct -> ttype != TOK_STR_LIT) |
| 300 | 715 { |
| 716 preproc_throw_error(pp, "Bad #line"); | |
| 717 skip_eol(pp); | |
| 718 return; | |
| 719 } | |
| 720 estr = lw_strdup(ct -> strval); | |
| 721 ct = preproc_next_processed_token_nws(pp); | |
| 722 if (ct -> ttype != TOK_EOL) | |
| 723 { | |
| 724 preproc_throw_error(pp, "Bad #line"); | |
| 725 skip_eol(pp); | |
| 726 lw_free(estr); | |
| 727 return; | |
| 728 } | |
| 729 pp -> fn = estr; | |
| 730 pp -> lineno = lineno; | |
| 296 | 731 } |
| 732 | |
| 733 static void dir_pragma(struct preproc_info *pp) | |
| 734 { | |
| 735 if (pp -> skip_level) | |
| 736 { | |
| 737 skip_eol(pp); | |
| 738 return; | |
| 739 } | |
| 740 | |
| 741 preproc_throw_warning(pp, "Unsupported #pragma"); | |
| 742 skip_eol(pp); | |
| 743 } | |
| 744 | |
| 745 struct { char *name; void (*fn)(struct preproc_info *); } dirlist[] = | |
| 746 { | |
| 747 { "ifdef", dir_ifdef }, | |
| 748 { "ifndef", dir_ifndef }, | |
| 749 { "if", dir_if }, | |
| 750 { "else", dir_else }, | |
| 751 { "elif", dir_elif }, | |
| 752 { "endif", dir_endif }, | |
| 753 { "define", dir_define }, | |
| 754 { "undef", dir_undef }, | |
| 755 { "include", dir_include }, | |
| 756 { "error", dir_error }, | |
| 757 { "warning", dir_warning }, | |
| 758 { "line", dir_line }, | |
| 759 { "pragma", dir_pragma }, | |
| 760 { NULL, NULL } | |
| 761 }; | |
| 762 | |
| 763 static void process_directive(struct preproc_info *pp) | |
| 764 { | |
| 765 struct token *ct; | |
| 766 int i; | |
| 767 | |
| 768 do | |
| 769 { | |
| 770 ct = preproc_next_token(pp); | |
| 771 } while (ct -> ttype == TOK_WSPACE); | |
| 772 | |
| 773 // NULL directive | |
| 774 if (ct -> ttype == TOK_EOL) | |
| 775 return; | |
| 776 | |
|
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777 if (ct -> ttype == TOK_NUMBER) |
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778 { |
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779 // this is probably a file marker from a previous run of the preprocessor |
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780 char *fn; |
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781 struct lw_strbuf *sb; |
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782 |
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783 i = preproc_numval(pp, ct); |
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784 ct = preproc_next_token_nws(pp); |
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785 if (ct -> ttype != TOK_STR_LIT) |
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786 goto baddir; |
|
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787 pp -> lineno = i; |
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788 sb = lw_strbuf_new(); |
|
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789 for (fn = ct -> strval; *fn && *fn != '"'; ) |
|
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790 { |
|
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791 if (*fn == '\\') |
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792 { |
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793 lw_strbuf_add(sb, eval_escape(&fn)); |
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794 } |
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795 else |
|
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796 { |
|
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797 lw_strbuf_add(sb, *fn++); |
|
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798 } |
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799 } |
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800 fn = lw_strbuf_end(sb); |
|
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801 pp -> fn = lw_strpool_strdup(pp -> strpool, fn); |
|
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802 lw_free(fn); |
|
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803 skip_eol(pp); |
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804 return; |
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805 } |
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806 |
| 296 | 807 if (ct -> ttype != TOK_IDENT) |
| 808 goto baddir; | |
| 809 | |
| 810 for (i = 0; dirlist[i].name; i++) | |
| 811 { | |
| 812 if (strcmp(dirlist[i].name, ct -> strval) == 0) | |
| 813 { | |
| 814 (*(dirlist[i].fn))(pp); | |
| 815 return; | |
| 816 } | |
| 817 } | |
| 818 baddir: | |
| 819 preproc_throw_error(pp, "Bad preprocessor directive"); | |
| 820 while (ct -> ttype != TOK_EOL) | |
| 821 ct = preproc_next_token(pp); | |
| 822 return; | |
| 823 } | |
| 824 | |
| 825 /* | |
| 826 Evaluate a preprocessor expression | |
| 827 */ | |
| 828 | |
| 829 /* same as skip_eol() but the EOL token is not consumed */ | |
| 830 static void skip_eoe(struct preproc_info *pp) | |
| 831 { | |
| 832 skip_eol(pp); | |
| 833 preproc_unget_token(pp, pp -> curtok); | |
| 834 } | |
| 835 | |
| 836 static long eval_expr_real(struct preproc_info *, int); | |
| 837 | |
| 838 static long eval_term_real(struct preproc_info *pp) | |
| 839 { | |
| 840 long tval = 0; | |
| 841 struct token *ct; | |
| 842 | |
| 843 eval_next: | |
| 844 ct = preproc_next_processed_token_nws(pp); | |
| 845 if (ct -> ttype == TOK_EOL) | |
| 846 { | |
| 847 preproc_throw_error(pp, "Bad expression"); | |
| 848 return 0; | |
| 849 } | |
| 850 | |
| 851 switch (ct -> ttype) | |
| 852 { | |
| 853 case TOK_OPAREN: | |
| 854 tval = eval_expr_real(pp, 0); | |
| 855 ct = preproc_next_processed_token_nws(pp); | |
| 856 if (ct -> ttype != ')') | |
| 857 { | |
| 858 preproc_throw_error(pp, "Unbalanced () in expression"); | |
| 859 skip_eoe(pp); | |
| 860 return 0; | |
| 861 } | |
| 862 return tval; | |
| 863 | |
| 864 case TOK_ADD: // unary + | |
| 865 goto eval_next; | |
| 866 | |
| 867 case TOK_SUB: // unary - | |
| 868 tval = eval_expr_real(pp, 200); | |
| 869 return -tval; | |
| 870 | |
| 871 /* NOTE: we should only get "TOK_IDENT" from an undefined macro */ | |
| 872 case TOK_IDENT: // some sort of function, symbol, etc. | |
| 873 if (strcmp(ct -> strval, "defined")) | |
| 874 { | |
| 875 /* the defined operator */ | |
| 876 /* any number in the "defined" bit will be | |
| 877 treated as a defined symbol, even zero */ | |
| 878 ct = preproc_next_token_nws(pp); | |
| 879 if (ct -> ttype == TOK_OPAREN) | |
| 880 { | |
| 881 ct = preproc_next_token_nws(pp); | |
| 882 if (ct -> ttype != TOK_IDENT) | |
| 883 { | |
| 884 preproc_throw_error(pp, "Bad expression"); | |
| 885 skip_eoe(pp); | |
| 886 return 0; | |
| 887 } | |
| 888 if (symtab_find(pp, ct -> strval) == NULL) | |
| 889 tval = 0; | |
| 890 else | |
| 891 tval = 1; | |
| 892 ct = preproc_next_token_nws(pp); | |
| 893 if (ct -> ttype != TOK_CPAREN) | |
| 894 { | |
| 895 preproc_throw_error(pp, "Bad expression"); | |
| 896 skip_eoe(pp); | |
| 897 return 0; | |
| 898 } | |
| 899 return tval; | |
| 900 } | |
| 901 else if (ct -> ttype == TOK_IDENT) | |
| 902 { | |
| 903 return (symtab_find(pp, ct -> strval) != NULL) ? 1 : 0; | |
| 904 } | |
| 905 preproc_throw_error(pp, "Bad expression"); | |
| 906 skip_eoe(pp); | |
| 907 return 0; | |
| 908 } | |
| 909 /* unknown identifier - it's zero */ | |
| 910 return 0; | |
| 911 | |
| 912 /* numbers */ | |
| 913 case TOK_NUMBER: | |
|
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914 return preproc_numval(pp, ct); |
| 296 | 915 |
| 916 default: | |
| 917 preproc_throw_error(pp, "Bad expression"); | |
| 918 skip_eoe(pp); | |
| 919 return 0; | |
| 920 } | |
| 921 return 0; | |
| 922 } | |
| 923 | |
| 924 static long eval_expr_real(struct preproc_info *pp, int p) | |
| 925 { | |
| 926 static const struct operinfo | |
| 927 { | |
| 928 int tok; | |
| 929 int prec; | |
| 930 } operators[] = | |
| 931 { | |
| 932 { TOK_ADD, 100 }, | |
| 933 { TOK_SUB, 100 }, | |
| 934 { TOK_STAR, 150 }, | |
| 935 { TOK_DIV, 150 }, | |
| 936 { TOK_MOD, 150 }, | |
| 937 { TOK_LT, 75 }, | |
| 938 { TOK_LE, 75 }, | |
| 939 { TOK_GT, 75 }, | |
| 940 { TOK_GE, 75 }, | |
| 941 { TOK_EQ, 70 }, | |
| 942 { TOK_NE, 70 }, | |
| 943 { TOK_BAND, 30 }, | |
| 944 { TOK_BOR, 25 }, | |
| 945 { TOK_NONE, 0 } | |
| 946 }; | |
| 947 | |
| 948 int op; | |
| 949 long term1, term2, term3; | |
| 950 struct token *ct; | |
| 951 | |
| 952 term1 = eval_term_real(pp); | |
| 953 eval_next: | |
| 954 ct = preproc_next_processed_token_nws(pp); | |
| 955 for (op = 0; operators[op].tok != TOK_NONE; op++) | |
| 956 { | |
| 957 if (operators[op].tok == ct -> ttype) | |
| 958 break; | |
| 959 } | |
| 960 /* if it isn't a recognized operator, assume end of expression */ | |
| 961 if (operators[op].tok == TOK_NONE) | |
| 962 { | |
| 963 preproc_unget_token(pp, ct); | |
| 964 return term1; | |
| 965 } | |
| 966 | |
| 967 /* if new operation is not higher than the current precedence, let the previous op finish */ | |
| 968 if (operators[op].prec <= p) | |
| 969 return term1; | |
| 970 | |
| 971 /* get the second term */ | |
| 972 term2 = eval_expr_real(pp, operators[op].prec); | |
| 973 | |
| 974 switch (operators[op].tok) | |
| 975 { | |
| 976 case TOK_ADD: | |
| 977 term3 = term1 + term2; | |
| 978 break; | |
| 979 | |
| 980 case TOK_SUB: | |
| 981 term3 = term1 - term2; | |
| 982 break; | |
| 983 | |
| 984 case TOK_STAR: | |
| 985 term3 = term1 * term2; | |
| 986 break; | |
| 987 | |
| 988 case TOK_DIV: | |
| 989 if (!term2) | |
| 990 { | |
| 991 preproc_throw_warning(pp, "Division by zero"); | |
| 992 term3 = 0; | |
| 993 break; | |
| 994 } | |
| 995 term3 = term1 / term2; | |
| 996 break; | |
| 997 | |
| 998 case TOK_MOD: | |
| 999 if (!term2) | |
| 1000 { | |
| 1001 preproc_throw_warning(pp, "Division by zero"); | |
| 1002 term3 = 0; | |
| 1003 break; | |
| 1004 } | |
| 1005 term3 = term1 % term2; | |
| 1006 break; | |
| 1007 | |
| 1008 case TOK_BAND: | |
| 1009 term3 = (term1 && term2); | |
| 1010 break; | |
| 1011 | |
| 1012 case TOK_BOR: | |
| 1013 term3 = (term1 || term2); | |
| 1014 break; | |
| 1015 | |
| 1016 case TOK_EQ: | |
| 1017 term3 = (term1 == term2); | |
| 1018 break; | |
| 1019 | |
| 1020 case TOK_NE: | |
| 1021 term3 = (term1 != term2); | |
| 1022 break; | |
| 1023 | |
| 1024 case TOK_GT: | |
| 1025 term3 = (term1 > term2); | |
| 1026 break; | |
| 1027 | |
| 1028 case TOK_GE: | |
| 1029 term3 = (term1 >= term2); | |
| 1030 break; | |
| 1031 | |
| 1032 case TOK_LT: | |
| 1033 term3 = (term1 < term2); | |
| 1034 break; | |
| 1035 | |
| 1036 case TOK_LE: | |
| 1037 term3 = (term1 <= term2); | |
| 1038 break; | |
| 1039 | |
| 1040 default: | |
| 1041 term3 = 0; | |
| 1042 break; | |
| 1043 } | |
| 1044 term1 = term3; | |
| 1045 goto eval_next; | |
| 1046 } | |
| 1047 | |
| 1048 static long eval_expr(struct preproc_info *pp) | |
| 1049 { | |
| 1050 long rv; | |
|
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1051 struct token *t; |
| 296 | 1052 |
| 1053 rv = eval_expr_real(pp, 0); | |
|
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1054 t = preproc_next_token_nws(pp); |
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|
1055 if (t -> ttype != TOK_EOL) |
| 296 | 1056 { |
| 1057 preproc_throw_error(pp, "Bad expression"); | |
| 1058 skip_eol(pp); | |
| 1059 } | |
| 1060 return rv; | |
| 1061 } | |
| 1062 | |
|
301
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|
1063 static int eval_escape(char **t) |
|
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1064 { |
|
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|
1065 int c; |
|
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|
1066 int c2; |
|
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1067 |
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1068 if (**t == 0) |
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1069 return 0; |
|
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1070 c = *(*t)++; |
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1071 int rv = 0; |
|
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1072 |
|
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1073 switch (c) |
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1074 { |
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1075 case 'n': |
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1076 return 10; |
|
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1077 case 'r': |
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1078 return 13; |
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1079 case 'b': |
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changeset
|
1080 return 8; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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diff
changeset
|
1081 case 'e': |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
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diff
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|
1082 return 27; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
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diff
changeset
|
1083 case 'f': |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
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diff
changeset
|
1084 return 12; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1085 case 't': |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1086 return 9; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1087 case 'v': |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1088 return 11; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1089 case 'a': |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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diff
changeset
|
1090 return 7; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1091 case '0': case '1': case '2': case '3': case '4': |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1092 case '5': case '6': case '7': |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1093 // octal constant |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1094 rv = c - '0'; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1095 c2 = 1; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1096 for (; c2 < 3; c2++) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1097 { |
|
6f7fe78bb868
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William Astle <lost@l-w.ca>
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300
diff
changeset
|
1098 c = *(*t)++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1099 if (c < '0' || c > '7') |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1100 break; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1101 rv = (rv << 3) | (c - '0'); |
|
6f7fe78bb868
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300
diff
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|
1102 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1103 return rv; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1104 case 'x': |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1105 // hex constant |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1106 for (;;) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1107 { |
|
6f7fe78bb868
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William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1108 c = *(*t)++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
changeset
|
1109 if (c < '0' || (c > '9' && c < 'A') || (c > 'F' && c < 'a') || c > 'f') |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1110 break; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1111 c = c - '0'; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1112 if (c > 9) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1113 c -= 7; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1114 if (c > 15) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1115 c -= 32; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1116 rv = (rv << 4) | c; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
changeset
|
1117 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1118 return rv & 0xff; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1119 default: |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1120 return c; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1121 } |
|
6f7fe78bb868
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William Astle <lost@l-w.ca>
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300
diff
changeset
|
1122 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1123 |
| 296 | 1124 /* convert a numeric string to a number */ |
|
301
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1125 long preproc_numval(struct preproc_info *pp, struct token *t) |
| 296 | 1126 { |
|
301
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1127 unsigned long long rv = 0; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
changeset
|
1128 unsigned long long rv2 = 0; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1129 char *tstr = t -> strval; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1130 int radix = 10; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
changeset
|
1131 int c; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
changeset
|
1132 int ovf = 0; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1133 union { long sv; unsigned long uv; } tv; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
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|
1134 |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1135 if (t -> ttype == TOK_CHR_LIT) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1136 { |
|
6f7fe78bb868
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William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1137 tstr++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1138 while (*tstr && *tstr != '\'') |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1139 { |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1140 if (*tstr == '\\') |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1141 { |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1142 tstr++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1143 c = eval_escape(&tstr); |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1144 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
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300
diff
changeset
|
1145 else |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1146 c = *tstr++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1147 rv = (rv << 8) | c; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1148 if (rv / radix < rv2) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1149 ovf = 1; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1150 rv2 = rv; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1151 |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1152 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1153 goto done; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1154 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1155 |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1156 |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1157 if (*tstr == '0') |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1158 { |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1159 radix = 8; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1160 tstr++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1161 if (*tstr == 'x') |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1162 { |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1163 radix = 16; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1164 tstr++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1165 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1166 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1167 while (*tstr) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1168 { |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1169 c = *tstr++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
changeset
|
1170 if (c < '0' || (c > '9' && c < 'A') || (c > 'F' && c < 'a') || c > 'f') |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1171 break; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1172 c -= '0'; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1173 if (c > 9) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1174 c -= 7; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1175 if (c > 15) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1176 c -= 32; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1177 if (c >= radix) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1178 break; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1179 rv = rv * radix + c; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
changeset
|
1180 if (rv / radix < rv2) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1181 ovf = 1; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1182 rv2 = rv; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1183 } |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1184 tstr--; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1185 while (*tstr == 'l' || *tstr == 'L') |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1186 tstr++; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1187 tv.uv = rv; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1188 if (tv.sv < 0 && radix == 10) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
William Astle <lost@l-w.ca>
parents:
300
diff
changeset
|
1189 ovf = 1; |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1190 done: |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1191 if (ovf) |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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parents:
300
diff
changeset
|
1192 preproc_throw_error(pp, "Constant out of range: %s", t -> strval); |
|
6f7fe78bb868
Add string -> number conversion for preproc expression evaluator
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300
diff
changeset
|
1193 return rv; |
| 296 | 1194 } |
| 1195 | |
| 1196 /* | |
| 1197 Below here is the logic for expanding a macro | |
| 1198 */ | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1199 static char *stringify(struct token_list *tli) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1200 { |
|
308
670ea8f90212
Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents:
307
diff
changeset
|
1201 struct lw_strbuf *s; |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1202 int ws = 0; |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1203 struct token *tl = tli -> head; |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1204 |
|
308
670ea8f90212
Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents:
307
diff
changeset
|
1205 s = lw_strbuf_new(); |
|
670ea8f90212
Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents:
307
diff
changeset
|
1206 lw_strbuf_add(s, '"'); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1207 |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1208 while (tl && tl -> ttype == TOK_WSPACE) |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1209 tl = tl -> next; |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1210 |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1211 for (; tl; tl = tl -> next) |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1212 { |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1213 if (tl -> ttype == TOK_WSPACE) |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1214 { |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1215 ws = 1; |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1216 continue; |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1217 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1218 if (ws) |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1219 { |
|
308
670ea8f90212
Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents:
307
diff
changeset
|
1220 lw_strbuf_add(s, ' '); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1221 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1222 for (ws = 0; tl -> strval[ws]; ws++) |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1223 { |
|
305
54f213c8fb81
Various bugfixes and output tuning
William Astle <lost@l-w.ca>
parents:
304
diff
changeset
|
1224 if (tl -> ttype == TOK_STR_LIT || tl -> ttype == TOK_CHR_LIT) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1225 { |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1226 if (tl -> strval[ws] == '"' || tl -> strval[ws] == '\\') |
|
308
670ea8f90212
Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents:
307
diff
changeset
|
1227 lw_strbuf_add(s, '\\'); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1228 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1229 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1230 ws = 0; |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1231 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1232 |
|
308
670ea8f90212
Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents:
307
diff
changeset
|
1233 lw_strbuf_add(s, '"'); |
|
670ea8f90212
Converted preproc logic to library and moved some utility stuff to lwlib
William Astle <lost@l-w.ca>
parents:
307
diff
changeset
|
1234 return lw_strbuf_end(s); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1235 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1236 |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1237 static int macro_arg(struct symtab_e *s, char *str) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1238 { |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1239 int i; |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1240 if (strcmp(str, "__VA_ARGS__") == 0) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1241 i = s -> nargs; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1242 else |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1243 for (i = 0; i < s -> nargs; i++) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1244 if (strcmp(s -> params[i], str) == 0) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1245 break; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1246 if (i == s -> nargs) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1247 if (s -> vargs == 0) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1248 return -1; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1249 return i; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1250 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1251 |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1252 /* return list to tokens as a result of ## expansion */ |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1253 static struct token_list *paste_tokens(struct preproc_info *pp, struct symtab_e *s, struct token_list **arglist, struct token *t1, struct token *t2) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1254 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1255 struct token_list *left; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1256 struct token_list *right; |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1257 char *tstr; |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1258 struct token *ttok; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1259 int i; |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1260 |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1261 if (t1 -> ttype == TOK_IDENT) |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1262 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1263 i = macro_arg(s, t1 -> strval); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1264 if (i == -1) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1265 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1266 left = token_list_create(); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1267 token_list_append(left, token_dup(t1)); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1268 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1269 else |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1270 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1271 left = token_list_dup(arglist[i]); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1272 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1273 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1274 else |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1275 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1276 left = token_list_create(); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1277 token_list_append(left, token_dup(t1)); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1278 } |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1279 // munch trailing white space |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1280 while (left -> tail && left -> tail -> ttype == TOK_WSPACE) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1281 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1282 token_list_remove(left -> tail); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1283 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1284 |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1285 if (t2 -> ttype == TOK_IDENT) |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1286 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1287 i = macro_arg(s, t2 -> strval); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1288 if (i == -1) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1289 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1290 right = token_list_create(); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1291 token_list_append(right, token_dup(t2)); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1292 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1293 else |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1294 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1295 right = token_list_dup(arglist[i]); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1296 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1297 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1298 else |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1299 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1300 right = token_list_create(); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1301 token_list_append(right, token_dup(t2)); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1302 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1303 // munch leading white space |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1304 while (right -> head && right -> head -> ttype == TOK_WSPACE) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1305 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1306 token_list_remove(right -> head); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1307 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1308 |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1309 // nothing to append at all |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1310 if (left -> head != NULL && right -> head == NULL) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1311 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1312 // right arg is empty - use left |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1313 token_list_destroy(right); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1314 return left; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1315 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1316 if (left -> head == NULL && right -> head != NULL) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1317 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1318 // left arg is empty, use right |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1319 token_list_destroy(left); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1320 return right; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1321 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1322 if (left -> head == NULL && right -> head == NULL) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1323 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1324 // both empty, use left |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1325 token_list_destroy(right); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1326 return left; |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1327 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1328 |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1329 // both non-empty - past left tail with right head |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1330 // then past the right list onto the left |
|
856caf91ffaa
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|
1331 tstr = lw_alloc(strlen(left -> tail -> strval) + strlen(right -> head -> strval) + 1); |
|
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|
1332 strcpy(tstr, left -> tail -> strval); |
|
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|
1333 strcat(tstr, right -> head -> strval); |
|
298
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|
1334 |
|
299
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|
1335 pp -> lexstr = tstr; |
|
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|
1336 pp -> lexstrloc = 0; |
|
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|
1337 |
|
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|
1338 ttok = preproc_lex_next_token(pp); |
|
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diff
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|
1339 if (ttok -> ttype != TOK_ERROR && pp -> lexstr[pp -> lexstrloc] == 0) |
|
298
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|
1340 { |
|
299
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|
1341 // we have a new token here |
|
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|
1342 token_list_remove(left -> tail); |
|
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|
1343 token_list_remove(right -> head); |
|
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|
1344 token_list_append(left, token_dup(ttok)); |
|
298
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|
1345 } |
|
299
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|
1346 lw_free(tstr); |
|
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Added token list structure and switched some stuff to use it
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|
1347 pp -> lexstr = NULL; |
|
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|
1348 pp -> lexstrloc = 0; |
|
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|
1349 for (ttok = right -> head; ttok; ttok = ttok -> next) |
|
298
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|
1350 { |
|
299
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|
1351 token_list_append(left, token_dup(ttok)); |
|
298
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|
1352 } |
|
299
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|
1353 token_list_destroy(right); |
|
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|
1354 return left; |
|
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|
1355 } |
|
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|
1356 |
| 296 | 1357 static int expand_macro(struct preproc_info *pp, char *mname) |
| 1358 { | |
| 1359 struct symtab_e *s; | |
| 1360 struct token *t, *t2, *t3; | |
| 1361 int nargs = 0; | |
| 1362 struct expand_e *e; | |
|
299
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|
1363 struct token_list **exparglist = NULL; |
|
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|
1364 struct token_list **arglist = NULL; |
| 296 | 1365 int i; |
|
297
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|
1366 int pcount; |
|
298
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|
1367 char *tstr; |
|
299
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|
1368 struct token_list *expand_list; |
|
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|
1369 int repl; |
|
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|
1370 struct token_list *rtl; |
|
307
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|
1371 |
|
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|
1372 // check for built in macros |
|
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|
1373 if (strcmp(mname, "__FILE__") == 0) |
|
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|
1374 { |
|
308
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|
1375 struct lw_strbuf *sb; |
|
307
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|
1376 |
|
308
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|
1377 sb = lw_strbuf_new(); |
|
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|
1378 lw_strbuf_add(sb, '"'); |
|
307
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|
1379 for (tstr = (char *)(pp -> fn); *tstr; tstr++) |
|
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|
1380 { |
|
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|
1381 if (*tstr == 32 || (*tstr > 34 && *tstr < 127)) |
|
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|
1382 { |
|
308
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|
1383 lw_strbuf_add(sb, *tstr); |
|
307
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|
1384 } |
|
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|
1385 else |
|
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|
1386 { |
|
308
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|
1387 lw_strbuf_add(sb, '\\'); |
|
670ea8f90212
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|
1388 lw_strbuf_add(sb, (*tstr >> 6) + '0'); |
|
670ea8f90212
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|
1389 lw_strbuf_add(sb, ((*tstr >> 3) & 7) + '0'); |
|
670ea8f90212
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|
1390 lw_strbuf_add(sb, (*tstr & 7) + '0'); |
|
307
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|
1391 } |
|
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|
1392 } |
|
308
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|
1393 lw_strbuf_add(sb, '"'); |
|
670ea8f90212
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|
1394 tstr = lw_strbuf_end(sb); |
|
307
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|
1395 preproc_unget_token(pp, token_create(TOK_STR_LIT, tstr, pp -> lineno, pp -> column, pp -> fn)); |
|
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|
1396 lw_free(tstr); |
|
9e342c4e4b66
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|
1397 return 1; |
|
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|
1398 } |
|
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|
1399 else if (strcmp(mname, "__LINE__") == 0) |
|
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|
1400 { |
|
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|
1401 char nbuf[25]; |
|
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|
1402 snprintf(nbuf, 25, "%d", pp -> lineno); |
|
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|
1403 preproc_unget_token(pp, token_create(TOK_NUMBER, nbuf, pp -> lineno, pp -> column, pp -> fn)); |
|
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|
1404 return 1; |
|
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|
1405 } |
|
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|
1406 else if (strcmp(mname, "__DATE__") == 0) |
|
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|
1407 { |
|
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|
1408 char dbuf[14]; |
|
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|
1409 struct tm *tv; |
|
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|
1410 time_t tm; |
|
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changeset
|
1411 static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; |
|
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|
1412 |
|
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|
1413 tm = time(NULL); |
|
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|
1414 tv = localtime(&tm); |
|
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|
1415 snprintf(dbuf, 14, "\"%s %2d %04d\"", months[tv -> tm_mon], tv -> tm_mday, tv -> tm_year + 1900); |
|
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|
1416 preproc_unget_token(pp, token_create(TOK_STR_LIT, dbuf, pp -> lineno, pp -> column, pp -> fn)); |
|
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|
1417 return 1; |
|
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|
1418 } |
|
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|
1419 else if (strcmp(mname, "__TIME__") == 0) |
|
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|
1420 { |
|
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|
1421 char tbuf[11]; |
|
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|
1422 struct tm *tv; |
|
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|
1423 time_t tm; |
|
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|
1424 |
|
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|
1425 tm = time(NULL); |
|
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|
1426 tv = localtime(&tm); |
|
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|
1427 snprintf(tbuf, 11, "\"%02d:%02d:%02d\"", tv -> tm_hour, tv -> tm_min, tv -> tm_sec); |
|
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|
1428 preproc_unget_token(pp, token_create(TOK_STR_LIT, tbuf, pp -> lineno, pp -> column, pp -> fn)); |
|
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|
1429 return 1; |
|
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|
1430 } |
|
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|
1431 |
| 296 | 1432 s = symtab_find(pp, mname); |
| 1433 if (!s) | |
| 1434 return 0; | |
| 1435 | |
| 1436 for (e = pp -> expand_list; e; e = e -> next) | |
| 1437 { | |
| 1438 /* don't expand if we're already expanding the same macro */ | |
| 1439 if (e -> s == s) | |
| 1440 return 0; | |
| 1441 } | |
| 1442 | |
| 1443 if (s -> nargs == -1) | |
| 1444 { | |
| 1445 /* short circuit NULL expansion */ | |
| 1446 if (s -> tl == NULL) | |
| 1447 return 1; | |
| 1448 | |
| 1449 goto expandmacro; | |
| 1450 } | |
| 1451 | |
| 1452 // look for opening paren after optional whitespace | |
| 1453 t2 = NULL; | |
| 1454 t = NULL; | |
| 1455 for (;;) | |
| 1456 { | |
| 1457 t = preproc_next_token(pp); | |
| 1458 if (t -> ttype != TOK_WSPACE && t -> ttype != TOK_EOL) | |
| 1459 break; | |
| 1460 t -> next = t2; | |
| 1461 t2 = t2; | |
| 1462 } | |
| 1463 if (t -> ttype != TOK_OPAREN) | |
| 1464 { | |
| 1465 // not a function-like invocation | |
| 1466 while (t2) | |
| 1467 { | |
| 1468 t = t2 -> next; | |
| 1469 preproc_unget_token(pp, t2); | |
| 1470 t2 = t; | |
| 1471 } | |
| 1472 return 0; | |
| 1473 } | |
| 1474 | |
| 1475 // parse parameters here | |
| 1476 t = preproc_next_token_nws(pp); | |
| 1477 nargs = 1; | |
|
299
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|
1478 arglist = lw_alloc(sizeof(struct token_list *)); |
|
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|
1479 arglist[0] = token_list_create(); |
| 296 | 1480 t2 = NULL; |
| 1481 | |
| 1482 while (t -> ttype != TOK_CPAREN) | |
| 1483 { | |
|
297
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296
diff
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|
1484 pcount = 0; |
| 296 | 1485 if (t -> ttype == TOK_EOF) |
| 1486 { | |
| 1487 preproc_throw_error(pp, "Unexpected EOF in macro call"); | |
| 1488 break; | |
| 1489 } | |
| 1490 if (t -> ttype == TOK_EOL) | |
| 1491 continue; | |
|
297
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296
diff
changeset
|
1492 if (t -> ttype == TOK_OPAREN) |
|
310df72c641d
Handle () surrounding macro args on invocation
William Astle <lost@l-w.ca>
parents:
296
diff
changeset
|
1493 pcount++; |
|
310df72c641d
Handle () surrounding macro args on invocation
William Astle <lost@l-w.ca>
parents:
296
diff
changeset
|
1494 else if (t -> ttype == TOK_CPAREN && pcount) |
|
310df72c641d
Handle () surrounding macro args on invocation
William Astle <lost@l-w.ca>
parents:
296
diff
changeset
|
1495 pcount--; |
|
310df72c641d
Handle () surrounding macro args on invocation
William Astle <lost@l-w.ca>
parents:
296
diff
changeset
|
1496 if (t -> ttype == TOK_COMMA && pcount == 0) |
| 296 | 1497 { |
| 1498 if (!(s -> vargs) || (nargs > s -> nargs)) | |
| 1499 { | |
| 1500 nargs++; | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1501 arglist = lw_realloc(arglist, sizeof(struct token_list *) * nargs); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1502 arglist[nargs - 1] = token_list_create(); |
| 296 | 1503 t2 = NULL; |
| 1504 continue; | |
| 1505 } | |
| 1506 } | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1507 token_list_append(arglist[nargs - 1], token_dup(t)); |
| 296 | 1508 } |
| 1509 | |
| 1510 if (s -> vargs) | |
| 1511 { | |
| 1512 if (nargs <= s -> nargs) | |
| 1513 { | |
| 1514 preproc_throw_error(pp, "Wrong number of arguments (%d) for variadic macro %s which takes %d arguments", nargs, mname, s -> nargs); | |
| 1515 } | |
| 1516 } | |
| 1517 else | |
| 1518 { | |
| 1519 if (s -> nargs != nargs && !(s -> nargs == 0 && nargs == 1 && arglist[nargs - 1])) | |
| 1520 { | |
| 1521 preproc_throw_error(pp, "Wrong number of arguments (%d) for macro %s which takes %d arguments", nargs, mname, s -> nargs); | |
| 1522 } | |
| 1523 } | |
| 1524 | |
| 1525 /* now calculate the pre-expansions of the arguments */ | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1526 exparglist = lw_alloc(nargs * sizeof(struct token_list *)); |
| 296 | 1527 for (i = 0; i < nargs; i++) |
| 1528 { | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1529 exparglist[i] = token_list_create(); |
| 296 | 1530 // NOTE: do nothing if empty argument |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1531 if (arglist[i] == NULL || arglist[i] -> head == NULL) |
| 296 | 1532 continue; |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1533 pp -> sourcelist = arglist[i]->head; |
| 296 | 1534 for (;;) |
| 1535 { | |
| 1536 t = preproc_next_processed_token(pp); | |
| 1537 if (t -> ttype == TOK_EOF) | |
| 1538 break; | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1539 token_list_append(exparglist[i], token_dup(t)); |
| 296 | 1540 } |
| 1541 } | |
| 1542 | |
| 1543 expandmacro: | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1544 expand_list = token_list_dup(s -> tl); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1545 |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1546 // scan for stringification and handle it |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1547 repl = 0; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1548 while (repl == 0) |
| 296 | 1549 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1550 for (t = expand_list -> head; t; t = t -> next) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1551 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1552 if (t -> ttype == TOK_HASH && t -> next && t -> next -> ttype == TOK_IDENT) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1553 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1554 i = macro_arg(s, t -> next -> strval); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1555 if (i != -1) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1556 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1557 repl = 1; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1558 tstr = stringify(arglist[i]); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1559 token_list_remove(t -> next); |
|
305
54f213c8fb81
Various bugfixes and output tuning
William Astle <lost@l-w.ca>
parents:
304
diff
changeset
|
1560 token_list_insert(expand_list, t, token_create(TOK_STR_LIT, tstr, t -> lineno, t -> column, t -> fn)); |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1561 token_list_remove(t); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1562 lw_free(tstr); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1563 break; |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1564 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1565 } |
|
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1566 } |
|
305
54f213c8fb81
Various bugfixes and output tuning
William Astle <lost@l-w.ca>
parents:
304
diff
changeset
|
1567 repl = 1; |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1568 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1569 |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1570 |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1571 // scan for concatenation and handle it |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1572 |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1573 for (t = expand_list -> head; t; t = t -> next) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1574 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1575 if (t -> ttype == TOK_DBLHASH) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1576 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1577 // have a concatenation operator here |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1578 for (t2 = t -> prev; t2; t2 = t2 -> prev) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1579 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1580 if (t2 -> ttype != TOK_WSPACE) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1581 break; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1582 } |
|
494
836dc5371980
Remove stray semicolon that almost certainly was causing a bug of some kind.
William Astle <lost@l-w.ca>
parents:
313
diff
changeset
|
1583 for (t3 = t -> next; t3; t3 = t3 -> next) |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1584 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1585 if (t3 -> ttype != TOK_WSPACE) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1586 break; |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1587 } |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1588 // if no non-whitespace before or after, ignore it |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1589 if (!t2 || !t3) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1590 continue; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1591 // eat the whitespace before and after |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1592 while (t -> prev != t2) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1593 token_list_remove(t -> prev); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1594 while (t -> next != t3) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1595 token_list_remove(t -> next); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1596 // now paste t -> prev with t -> next and replace t with the result |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1597 // continue scanning for ## at t -> next -> next |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1598 t3 = t -> next -> next; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1599 |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1600 rtl = paste_tokens(pp, s, arglist, t -> prev, t -> next); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1601 token_list_remove(t -> next); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1602 token_list_remove(t -> prev); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1603 t2 = t -> prev; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1604 token_list_remove(t); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1605 for (t = rtl -> head; t; t = t -> next) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1606 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1607 token_list_insert(expand_list, t2, token_dup(t)); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1608 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1609 t = t3 -> prev; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1610 token_list_destroy(rtl); |
|
298
6112c67728ba
Add stringification and token concatenation
William Astle <lost@l-w.ca>
parents:
297
diff
changeset
|
1611 } |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1612 } |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1613 |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1614 // now scan for arguments and expand them |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1615 for (t = expand_list -> head; t; t = t -> next) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1616 { |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1617 again: |
| 296 | 1618 if (t -> ttype == TOK_IDENT) |
| 1619 { | |
| 1620 /* identifiers might need expansion to arguments */ | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1621 i = macro_arg(s, t -> strval); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1622 if (i != -1) |
| 296 | 1623 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1624 t3 = t -> next; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1625 for (t2 = exparglist[i] -> tail; t2; t2 = t2 -> prev) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1626 token_list_insert(expand_list, t, token_dup(t2)); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1627 token_list_remove(t); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1628 t = t3; |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1629 goto again; |
| 296 | 1630 } |
| 1631 } | |
| 1632 } | |
| 1633 | |
| 1634 /* put the new expansion in front of the input, if relevant; if we | |
| 1635 expanded to nothing, no need to create an expansion record or | |
| 1636 put anything into the input queue */ | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1637 if (expand_list -> head) |
| 296 | 1638 { |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1639 token_list_append(expand_list, token_create(TOK_ENDEXPAND, "", -1, -1, "")); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1640 |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1641 // move the expanded list into the token queue |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1642 for (t = expand_list -> tail; t; t = t -> prev) |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1643 preproc_unget_token(pp, token_dup(t)); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1644 |
| 296 | 1645 /* set up expansion record */ |
| 1646 e = lw_alloc(sizeof(struct expand_e)); | |
| 1647 e -> next = pp -> expand_list; | |
| 1648 pp -> expand_list = e; | |
| 1649 e -> s = s; | |
| 1650 } | |
| 1651 | |
| 1652 /* now clean up */ | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1653 token_list_destroy(expand_list); |
| 296 | 1654 for (i = 0; i < nargs; i++) |
| 1655 { | |
|
299
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1656 token_list_destroy(arglist[i]); |
|
856caf91ffaa
Added token list structure and switched some stuff to use it
William Astle <lost@l-w.ca>
parents:
298
diff
changeset
|
1657 token_list_destroy(exparglist[i]); |
| 296 | 1658 } |
| 1659 lw_free(arglist); | |
| 1660 lw_free(exparglist); | |
| 1661 | |
| 1662 return 1; | |
| 1663 } | |
|
304
d85d173ba120
Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
parents:
301
diff
changeset
|
1664 |
|
d85d173ba120
Checkpoint lwcc development - preprocessor is runnable but nonfunctional
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1665 struct token *preproc_next(struct preproc_info *pp) |
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Checkpoint lwcc development - preprocessor is runnable but nonfunctional
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1666 { |
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Checkpoint lwcc development - preprocessor is runnable but nonfunctional
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parents:
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1667 struct token *t; |
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Checkpoint lwcc development - preprocessor is runnable but nonfunctional
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1668 |
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Checkpoint lwcc development - preprocessor is runnable but nonfunctional
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1669 t = preproc_next_processed_token(pp); |
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Checkpoint lwcc development - preprocessor is runnable but nonfunctional
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1670 pp -> curtok = NULL; |
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Checkpoint lwcc development - preprocessor is runnable but nonfunctional
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parents:
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1671 return t; |
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Checkpoint lwcc development - preprocessor is runnable but nonfunctional
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parents:
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1672 } |