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annotate macro.c @ 166:4ea0ce804d22
Don't need digits[], take it back out.
| author | David A. Holland |
|---|---|
| date | Fri, 12 Jun 2015 01:31:49 -0400 |
| parents | f14f5352956c |
| children | fa9752f194c6 |
| rev | line source |
|---|---|
| 30 | 1 /*- |
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2 * Copyright (c) 2010, 2013 The NetBSD Foundation, Inc. |
| 30 | 3 * All rights reserved. |
| 4 * | |
| 5 * This code is derived from software contributed to The NetBSD Foundation | |
| 6 * by David A. Holland. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * 1. Redistributions of source code must retain the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer. | |
| 13 * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer in the | |
| 15 * documentation and/or other materials provided with the distribution. | |
| 16 * | |
| 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | |
| 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
| 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | |
| 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 27 * POSSIBILITY OF SUCH DAMAGE. | |
| 28 */ | |
| 29 | |
| 33 | 30 #include <stdint.h> |
|
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31 #include <stdio.h> |
| 17 | 32 #include <stdlib.h> |
| 33 #include <string.h> | |
| 34 | |
| 35 #include "array.h" | |
| 36 #include "mode.h" | |
| 37 #include "place.h" | |
| 38 #include "macro.h" | |
| 19 | 39 #include "output.h" |
| 40 | |
| 41 struct expansionitem { | |
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42 enum { EI_PARAM, EI_STRING, EI_FILE, EI_LINE } itemtype; |
| 19 | 43 union { |
| 44 char *string; | |
| 45 unsigned param; | |
| 46 }; | |
| 47 }; | |
| 107 | 48 DECLARRAY(expansionitem, static UNUSED); |
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49 DEFARRAY(expansionitem, static); |
| 17 | 50 |
| 51 struct macro { | |
| 52 struct place defplace; | |
| 53 struct place expansionplace; | |
| 18 | 54 struct stringarray params; |
| 19 | 55 struct expansionitemarray expansion; |
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56 char *name; |
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57 unsigned hash; |
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58 bool hasparams; |
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59 bool isspecial; |
| 19 | 60 bool inuse; |
| 17 | 61 }; |
| 107 | 62 DECLARRAY(macro, static UNUSED); |
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63 DEFARRAY(macro, static); |
| 107 | 64 DECLARRAY(macroarray, static UNUSED); |
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65 DEFARRAY(macroarray, static); |
| 17 | 66 |
| 67 static struct macroarrayarray macros; | |
| 68 static unsigned total_macros; | |
| 69 static unsigned hashmask; | |
| 70 | |
| 71 //////////////////////////////////////////////////////////// | |
| 72 // macro structure ops | |
| 73 | |
| 74 static | |
| 19 | 75 struct expansionitem * |
| 76 expansionitem_create_string(const char *string) | |
| 77 { | |
| 78 struct expansionitem *ei; | |
| 79 | |
| 80 ei = domalloc(sizeof(*ei)); | |
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81 ei->itemtype = EI_STRING; |
| 19 | 82 ei->string = dostrdup(string); |
| 83 return ei; | |
| 84 } | |
| 85 | |
| 86 static | |
| 87 struct expansionitem * | |
| 88 expansionitem_create_stringlen(const char *string, size_t len) | |
| 89 { | |
| 90 struct expansionitem *ei; | |
| 91 | |
| 92 ei = domalloc(sizeof(*ei)); | |
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93 ei->itemtype = EI_STRING; |
| 19 | 94 ei->string = dostrndup(string, len); |
| 95 return ei; | |
| 96 } | |
| 97 | |
| 98 static | |
| 99 struct expansionitem * | |
| 100 expansionitem_create_param(unsigned param) | |
| 101 { | |
| 102 struct expansionitem *ei; | |
| 103 | |
| 104 ei = domalloc(sizeof(*ei)); | |
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105 ei->itemtype = EI_PARAM; |
| 19 | 106 ei->param = param; |
| 107 return ei; | |
| 108 } | |
| 109 | |
| 110 static | |
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111 struct expansionitem * |
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112 expansionitem_create_file(void) |
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113 { |
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114 struct expansionitem *ei; |
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115 |
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116 ei = domalloc(sizeof(*ei)); |
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117 ei->itemtype = EI_FILE; |
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118 return ei; |
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119 } |
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120 |
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121 static |
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122 struct expansionitem * |
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123 expansionitem_create_line(void) |
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124 { |
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125 struct expansionitem *ei; |
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126 |
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127 ei = domalloc(sizeof(*ei)); |
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128 ei->itemtype = EI_LINE; |
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129 return ei; |
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130 } |
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131 |
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132 static |
| 19 | 133 void |
| 134 expansionitem_destroy(struct expansionitem *ei) | |
| 135 { | |
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136 if (ei->itemtype == EI_STRING) { |
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137 dostrfree(ei->string); |
| 19 | 138 } |
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139 dofree(ei, sizeof(*ei)); |
| 19 | 140 } |
| 141 | |
| 142 static | |
| 143 bool | |
| 144 expansionitem_eq(const struct expansionitem *ei1, | |
| 145 const struct expansionitem *ei2) | |
| 146 { | |
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147 if ((ei1->itemtype == EI_STRING) != (ei2->itemtype == EI_STRING)) { |
| 19 | 148 return false; |
| 149 } | |
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150 if (ei1->itemtype == EI_STRING) { |
| 19 | 151 if (strcmp(ei1->string, ei2->string) != 0) { |
| 152 return false; | |
| 153 } | |
| 154 } else { | |
| 155 if (ei1->param != ei2->param) { | |
| 156 return false; | |
| 157 } | |
| 158 } | |
| 159 return true; | |
| 160 } | |
| 161 | |
| 162 static | |
| 17 | 163 struct macro * |
| 18 | 164 macro_create(struct place *p1, const char *name, unsigned hash, |
| 19 | 165 struct place *p2) |
| 17 | 166 { |
| 167 struct macro *m; | |
| 168 | |
| 169 m = domalloc(sizeof(*m)); | |
| 170 m->defplace = *p1; | |
| 171 m->expansionplace = *p2; | |
| 172 m->hash = hash; | |
| 173 m->name = dostrdup(name); | |
| 18 | 174 m->hasparams = false; |
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175 m->isspecial = false; |
| 18 | 176 stringarray_init(&m->params); |
| 19 | 177 expansionitemarray_init(&m->expansion); |
| 178 m->inuse = false; | |
| 17 | 179 return m; |
| 180 } | |
| 181 | |
| 19 | 182 DESTROYALL_ARRAY(expansionitem, ); |
| 183 | |
| 17 | 184 static |
| 185 void | |
| 186 macro_destroy(struct macro *m) | |
| 187 { | |
| 19 | 188 expansionitemarray_destroyall(&m->expansion); |
| 189 expansionitemarray_cleanup(&m->expansion); | |
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190 dostrfree(m->name); |
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191 dofree(m, sizeof(*m)); |
| 17 | 192 } |
| 193 | |
| 18 | 194 static |
| 195 bool | |
| 196 macro_eq(const struct macro *m1, const struct macro *m2) | |
| 197 { | |
| 198 unsigned num1, num2, i; | |
| 19 | 199 struct expansionitem *ei1, *ei2; |
| 18 | 200 const char *p1, *p2; |
| 201 | |
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202 if (m2->isspecial) { |
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203 return false; |
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204 } |
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205 |
| 18 | 206 if (strcmp(m1->name, m2->name) != 0) { |
| 207 return false; | |
| 208 } | |
| 209 | |
| 210 if (m1->hasparams != m2->hasparams) { | |
| 211 return false; | |
| 212 } | |
| 213 | |
| 19 | 214 num1 = expansionitemarray_num(&m1->expansion); |
| 215 num2 = expansionitemarray_num(&m2->expansion); | |
| 216 if (num1 != num2) { | |
| 18 | 217 return false; |
| 218 } | |
| 219 | |
| 19 | 220 for (i=0; i<num1; i++) { |
| 221 ei1 = expansionitemarray_get(&m1->expansion, i); | |
| 222 ei2 = expansionitemarray_get(&m2->expansion, i); | |
| 223 if (!expansionitem_eq(ei1, ei2)) { | |
| 224 return false; | |
| 225 } | |
| 226 } | |
| 227 | |
| 18 | 228 num1 = stringarray_num(&m1->params); |
| 229 num2 = stringarray_num(&m2->params); | |
| 230 if (num1 != num2) { | |
| 231 return false; | |
| 232 } | |
| 233 | |
| 234 for (i=0; i<num1; i++) { | |
| 235 p1 = stringarray_get(&m1->params, i); | |
| 236 p2 = stringarray_get(&m2->params, i); | |
| 237 if (strcmp(p1, p2) != 0) { | |
| 238 return false; | |
| 239 } | |
| 240 } | |
| 241 return true; | |
| 242 } | |
| 243 | |
| 17 | 244 //////////////////////////////////////////////////////////// |
| 245 // macro table | |
| 246 | |
| 247 /* | |
| 248 * Unless I've screwed up, this is something called Fletcher's Checksum | |
| 249 * that showed up in Dr. Dobbs in, according to my notes, May 1992. The | |
| 250 * implementation is new. | |
| 251 */ | |
| 252 static | |
| 253 unsigned | |
| 19 | 254 hashfunc(const char *s, size_t len) |
| 17 | 255 { |
| 256 uint16_t x1, x2, a; | |
| 19 | 257 size_t i; |
| 17 | 258 |
| 259 x1 = (uint16_t) (len >> 16); | |
| 260 x2 = (uint16_t) (len); | |
| 261 if (x1==0) { | |
| 262 x1++; | |
| 263 } | |
| 264 if (x2==0) { | |
| 265 x2++; | |
| 266 } | |
| 267 | |
| 268 for (i=0; i<len; i+=2) { | |
| 269 if (i==len-1) { | |
| 270 a = (unsigned char)s[i]; | |
| 271 /* don't run off the end of the array */ | |
| 272 } | |
| 273 else { | |
| 274 a = (unsigned char)s[i] + | |
| 275 ((uint16_t)(unsigned char)s[i+1] << 8); | |
| 276 } | |
| 277 x1 += a; | |
| 278 if (x1 < a) { | |
| 279 x1++; | |
| 280 } | |
| 281 x2 += x1; | |
| 282 if (x2 < x1) { | |
| 283 x2++; | |
| 284 } | |
| 285 } | |
| 286 | |
| 287 x1 ^= 0xffff; | |
| 288 x2 ^= 0xffff; | |
| 289 return ((uint32_t)x2)*65535U + x1; | |
| 290 } | |
| 291 | |
| 292 static | |
| 293 void | |
| 294 macrotable_init(void) | |
| 295 { | |
| 296 unsigned i; | |
| 297 | |
| 298 macroarrayarray_init(¯os); | |
| 299 macroarrayarray_setsize(¯os, 4); | |
| 300 for (i=0; i<4; i++) { | |
| 301 macroarrayarray_set(¯os, i, NULL); | |
| 302 } | |
| 303 total_macros = 0; | |
| 304 hashmask = 0x3; | |
| 305 } | |
| 306 | |
| 307 DESTROYALL_ARRAY(macro, ); | |
| 308 | |
| 309 static | |
| 310 void | |
| 311 macrotable_cleanup(void) | |
| 312 { | |
| 313 struct macroarray *bucket; | |
| 314 unsigned numbuckets, i; | |
| 315 | |
| 316 numbuckets = macroarrayarray_num(¯os); | |
| 317 for (i=0; i<numbuckets; i++) { | |
| 318 bucket = macroarrayarray_get(¯os, i); | |
| 28 | 319 if (bucket != NULL) { |
| 320 macroarray_destroyall(bucket); | |
| 321 macroarray_destroy(bucket); | |
| 322 } | |
| 17 | 323 } |
| 324 macroarrayarray_setsize(¯os, 0); | |
| 325 macroarrayarray_cleanup(¯os); | |
| 326 } | |
| 327 | |
| 328 static | |
| 329 struct macro * | |
| 19 | 330 macrotable_findlen(const char *name, size_t len, bool remove) |
| 17 | 331 { |
| 332 unsigned hash; | |
| 333 struct macroarray *bucket; | |
| 334 struct macro *m, *m2; | |
| 335 unsigned i, num; | |
| 19 | 336 size_t mlen; |
| 17 | 337 |
| 19 | 338 hash = hashfunc(name, len); |
| 17 | 339 bucket = macroarrayarray_get(¯os, hash & hashmask); |
| 340 if (bucket == NULL) { | |
| 341 return NULL; | |
| 342 } | |
| 343 num = macroarray_num(bucket); | |
| 344 for (i=0; i<num; i++) { | |
| 345 m = macroarray_get(bucket, i); | |
| 346 if (hash != m->hash) { | |
| 347 continue; | |
| 348 } | |
| 19 | 349 mlen = strlen(m->name); |
| 350 if (len == mlen && !memcmp(name, m->name, len)) { | |
| 17 | 351 if (remove) { |
| 352 if (i < num-1) { | |
| 353 m2 = macroarray_get(bucket, num-1); | |
| 354 macroarray_set(bucket, i, m2); | |
| 355 } | |
| 356 macroarray_setsize(bucket, num-1); | |
| 357 total_macros--; | |
| 358 } | |
| 359 return m; | |
| 360 } | |
| 361 } | |
| 362 return NULL; | |
| 363 } | |
| 364 | |
| 365 static | |
| 19 | 366 struct macro * |
| 367 macrotable_find(const char *name, bool remove) | |
| 368 { | |
| 369 return macrotable_findlen(name, strlen(name), remove); | |
| 370 } | |
| 371 | |
| 372 static | |
| 17 | 373 void |
| 374 macrotable_rehash(void) | |
| 375 { | |
| 376 struct macroarray *newbucket, *oldbucket; | |
| 377 struct macro *m; | |
| 378 unsigned newmask, tossbit; | |
| 379 unsigned numbuckets, i; | |
| 380 unsigned oldnum, j, k; | |
| 381 | |
| 382 numbuckets = macroarrayarray_num(¯os); | |
| 383 macroarrayarray_setsize(¯os, numbuckets*2); | |
| 384 | |
| 385 assert(hashmask == numbuckets - 1); | |
| 386 newmask = (hashmask << 1) | 1U; | |
| 74 | 387 tossbit = newmask & ~hashmask; |
| 17 | 388 hashmask = newmask; |
| 389 | |
| 390 for (i=0; i<numbuckets; i++) { | |
| 391 newbucket = NULL; | |
| 392 oldbucket = macroarrayarray_get(¯os, i); | |
| 74 | 393 if (oldbucket == NULL) { |
| 394 macroarrayarray_set(¯os, numbuckets + i, NULL); | |
| 395 continue; | |
| 396 } | |
| 17 | 397 oldnum = macroarray_num(oldbucket); |
| 398 for (j=0; j<oldnum; j++) { | |
| 399 m = macroarray_get(oldbucket, j); | |
| 400 if (m->hash & tossbit) { | |
| 401 if (newbucket == NULL) { | |
| 402 newbucket = macroarray_create(); | |
| 403 } | |
| 404 macroarray_set(oldbucket, j, NULL); | |
| 405 macroarray_add(newbucket, m, NULL); | |
| 406 } | |
| 407 } | |
| 408 for (j=k=0; j<oldnum; j++) { | |
| 409 m = macroarray_get(oldbucket, j); | |
| 74 | 410 if (m != NULL) { |
| 411 if (k < j) { | |
| 412 macroarray_set(oldbucket, k, m); | |
| 413 } | |
| 414 k++; | |
| 17 | 415 } |
| 416 } | |
| 417 macroarray_setsize(oldbucket, k); | |
| 418 macroarrayarray_set(¯os, numbuckets + i, newbucket); | |
| 419 } | |
| 420 } | |
| 421 | |
| 422 static | |
| 423 void | |
| 424 macrotable_add(struct macro *m) | |
| 425 { | |
| 426 unsigned hash; | |
| 427 struct macroarray *bucket; | |
| 428 unsigned numbuckets; | |
| 429 | |
| 430 numbuckets = macroarrayarray_num(¯os); | |
| 431 if (total_macros > 0 && total_macros / numbuckets > 9) { | |
| 432 macrotable_rehash(); | |
| 433 } | |
| 434 | |
| 19 | 435 hash = hashfunc(m->name, strlen(m->name)); |
| 17 | 436 bucket = macroarrayarray_get(¯os, hash & hashmask); |
| 437 if (bucket == NULL) { | |
| 438 bucket = macroarray_create(); | |
| 439 macroarrayarray_set(¯os, hash & hashmask, bucket); | |
| 440 } | |
| 441 macroarray_add(bucket, m, NULL); | |
| 442 total_macros++; | |
| 443 } | |
| 444 | |
| 445 //////////////////////////////////////////////////////////// | |
| 446 // external macro definition interface | |
| 447 | |
| 18 | 448 static |
| 449 struct macro * | |
| 450 macro_define_common_start(struct place *p1, const char *macro, | |
| 19 | 451 struct place *p2) |
| 17 | 452 { |
| 453 struct macro *m; | |
| 19 | 454 unsigned hash; |
| 17 | 455 |
| 18 | 456 if (!is_identifier(macro)) { |
| 457 complain(p1, "Invalid macro name %s", macro); | |
| 458 complain_fail(); | |
| 459 } | |
| 460 | |
| 19 | 461 hash = hashfunc(macro, strlen(macro)); |
| 462 m = macro_create(p1, macro, hash, p2); | |
| 18 | 463 return m; |
| 464 } | |
| 465 | |
| 466 static | |
| 467 void | |
| 468 macro_define_common_end(struct macro *m) | |
| 469 { | |
| 470 struct macro *oldm; | |
| 471 bool ok; | |
| 472 | |
| 473 oldm = macrotable_find(m->name, false); | |
| 474 if (oldm != NULL) { | |
| 475 ok = macro_eq(m, oldm); | |
| 476 if (ok) { | |
|
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477 /* in traditional cpp this is silent */ |
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478 //complain(&m->defplace, |
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479 // "Warning: redefinition of %s", m->name); |
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480 //complain(&oldm->defplace, |
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481 // "Previous definition was here"); |
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482 //if (mode.werror) { |
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483 // complain_fail(); |
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484 //} |
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485 } else { |
| 18 | 486 complain(&m->defplace, |
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487 "Warning: non-identical redefinition of %s", |
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488 m->name); |
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489 complain(&oldm->defplace, |
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490 "Previous definition was here"); |
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491 /* in traditional cpp this is not fatal */ |
| 17 | 492 if (mode.werror) { |
| 493 complain_fail(); | |
| 494 } | |
| 495 } | |
| 18 | 496 macro_destroy(m); |
| 17 | 497 return; |
| 498 } | |
| 18 | 499 macrotable_add(m); |
| 500 } | |
| 17 | 501 |
| 18 | 502 static |
| 503 void | |
| 504 macro_parse_parameters(struct macro *m, struct place *p, const char *params) | |
| 505 { | |
| 506 size_t len; | |
| 507 const char *s; | |
| 508 char *param; | |
| 509 | |
| 510 while (params != NULL) { | |
| 511 len = strspn(params, ws); | |
| 512 params += len; | |
| 513 p->column += len; | |
| 514 s = strchr(params, ','); | |
| 515 if (s) { | |
| 516 len = s-params; | |
| 517 param = dostrndup(params, len); | |
| 518 s++; | |
| 519 } else { | |
| 520 len = strlen(params); | |
| 521 param = dostrndup(params, len); | |
| 522 } | |
| 523 notrailingws(param, strlen(param)); | |
| 524 if (!is_identifier(param)) { | |
| 525 complain(p, "Invalid macro parameter name %s", param); | |
| 526 complain_fail(); | |
| 527 } else { | |
| 528 stringarray_add(&m->params, param, NULL); | |
| 529 } | |
| 530 params = s; | |
| 531 p->column += len; | |
| 532 } | |
| 533 } | |
| 534 | |
| 19 | 535 static |
| 536 bool | |
| 537 isparam(struct macro *m, const char *name, size_t len, unsigned *num_ret) | |
| 538 { | |
| 539 unsigned num, i; | |
| 540 const char *param; | |
| 541 | |
| 542 num = stringarray_num(&m->params); | |
| 543 for (i=0; i<num; i++) { | |
| 544 param = stringarray_get(&m->params, i); | |
| 27 | 545 if (strlen(param) == len && !memcmp(name, param, len)) { |
| 19 | 546 *num_ret = i; |
| 547 return true; | |
| 548 } | |
| 549 } | |
| 550 return false; | |
| 551 } | |
| 552 | |
| 553 static | |
| 554 void | |
| 555 macro_parse_expansion(struct macro *m, const char *buf) | |
| 556 { | |
| 557 size_t blockstart, wordstart, pos; | |
| 558 struct expansionitem *ei; | |
| 559 unsigned param; | |
| 560 | |
| 561 pos = blockstart = 0; | |
| 562 while (buf[pos] != '\0') { | |
| 563 pos += strspn(buf+pos, ws); | |
| 564 if (strchr(alnum, buf[pos])) { | |
| 565 wordstart = pos; | |
| 566 pos += strspn(buf+pos, alnum); | |
| 567 if (isparam(m, buf+wordstart, pos-wordstart, ¶m)) { | |
| 144 | 568 if (wordstart > blockstart) { |
| 19 | 569 ei = expansionitem_create_stringlen( |
| 570 buf + blockstart, | |
| 27 | 571 wordstart - blockstart); |
| 19 | 572 expansionitemarray_add(&m->expansion, |
| 573 ei, NULL); | |
| 574 } | |
| 575 ei = expansionitem_create_param(param); | |
| 576 expansionitemarray_add(&m->expansion, ei,NULL); | |
| 577 blockstart = pos; | |
| 578 continue; | |
| 579 } | |
| 580 continue; | |
| 581 } | |
| 582 pos++; | |
| 583 } | |
| 584 if (pos > blockstart) { | |
| 585 ei = expansionitem_create_stringlen(buf + blockstart, | |
| 25 | 586 pos - blockstart); |
| 19 | 587 expansionitemarray_add(&m->expansion, ei, NULL); |
| 588 } | |
| 589 } | |
| 590 | |
| 18 | 591 void |
| 592 macro_define_plain(struct place *p1, const char *macro, | |
| 593 struct place *p2, const char *expansion) | |
| 594 { | |
| 595 struct macro *m; | |
| 19 | 596 struct expansionitem *ei; |
| 18 | 597 |
| 19 | 598 m = macro_define_common_start(p1, macro, p2); |
| 599 ei = expansionitem_create_string(expansion); | |
| 600 expansionitemarray_add(&m->expansion, ei, NULL); | |
| 18 | 601 macro_define_common_end(m); |
| 602 } | |
| 603 | |
| 604 void | |
|
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605 macro_define_file(struct place *p) |
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606 { |
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607 struct macro *m; |
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608 struct expansionitem *ei; |
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609 |
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610 m = macro_define_common_start(p, "__FILE__", p); |
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611 m->isspecial = true; |
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612 ei = expansionitem_create_file(); |
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613 expansionitemarray_add(&m->expansion, ei, NULL); |
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614 macro_define_common_end(m); |
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615 } |
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616 |
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617 void |
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618 macro_define_line(struct place *p) |
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619 { |
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620 struct macro *m; |
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621 struct expansionitem *ei; |
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622 |
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623 m = macro_define_common_start(p, "__LINE__", p); |
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624 m->isspecial = true; |
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625 ei = expansionitem_create_line(); |
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626 expansionitemarray_add(&m->expansion, ei, NULL); |
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627 macro_define_common_end(m); |
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628 } |
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629 |
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630 void |
| 18 | 631 macro_define_params(struct place *p1, const char *macro, |
| 632 struct place *p2, const char *params, | |
| 633 struct place *p3, const char *expansion) | |
| 634 { | |
| 635 struct macro *m; | |
| 636 | |
| 19 | 637 m = macro_define_common_start(p1, macro, p3); |
| 25 | 638 m->hasparams = true; |
| 18 | 639 macro_parse_parameters(m, p2, params); |
| 19 | 640 macro_parse_expansion(m, expansion); |
| 18 | 641 macro_define_common_end(m); |
| 17 | 642 } |
| 643 | |
| 644 void | |
| 645 macro_undef(const char *macro) | |
| 646 { | |
| 647 struct macro *m; | |
| 648 | |
| 649 m = macrotable_find(macro, true); | |
| 650 if (m) { | |
| 651 macro_destroy(m); | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 bool | |
| 656 macro_isdefined(const char *macro) | |
| 657 { | |
| 658 struct macro *m; | |
| 659 | |
| 660 m = macrotable_find(macro, false); | |
| 661 return m != NULL; | |
| 662 } | |
| 663 | |
| 664 //////////////////////////////////////////////////////////// | |
| 665 // macro expansion | |
| 666 | |
| 19 | 667 struct expstate { |
| 668 bool honordefined; | |
| 669 enum { ES_NORMAL, ES_WANTLPAREN, ES_NOARG, ES_HAVEARG } state; | |
| 670 struct macro *curmacro; | |
| 671 struct stringarray args; | |
| 672 unsigned argparens; | |
| 673 | |
| 674 bool tobuf; | |
| 675 char *buf; | |
| 676 size_t bufpos, bufmax; | |
| 677 }; | |
| 678 | |
| 679 static struct expstate mainstate; | |
| 680 | |
| 681 static void doexpand(struct expstate *es, struct place *p, | |
| 682 char *buf, size_t len); | |
| 683 | |
| 684 static | |
| 685 void | |
| 686 expstate_init(struct expstate *es, bool tobuf, bool honordefined) | |
| 687 { | |
| 688 es->honordefined = honordefined; | |
| 689 es->state = ES_NORMAL; | |
| 690 es->curmacro = NULL; | |
| 691 stringarray_init(&es->args); | |
| 692 es->argparens = 0; | |
| 693 es->tobuf = tobuf; | |
| 694 es->buf = NULL; | |
| 695 es->bufpos = 0; | |
| 696 es->bufmax = 0; | |
| 697 } | |
| 698 | |
| 699 static | |
| 700 void | |
| 701 expstate_cleanup(struct expstate *es) | |
| 702 { | |
| 703 assert(es->state == ES_NORMAL); | |
| 704 stringarray_cleanup(&es->args); | |
| 705 if (es->buf) { | |
|
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706 dofree(es->buf, es->bufmax); |
| 19 | 707 } |
| 708 } | |
| 709 | |
| 710 static | |
| 711 void | |
| 712 expstate_destroyargs(struct expstate *es) | |
| 713 { | |
| 714 unsigned i, num; | |
| 715 | |
| 716 num = stringarray_num(&es->args); | |
| 717 for (i=0; i<num; i++) { | |
|
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718 dostrfree(stringarray_get(&es->args, i)); |
| 19 | 719 } |
| 720 stringarray_setsize(&es->args, 0); | |
| 721 } | |
| 722 | |
| 723 static | |
| 724 void | |
| 21 | 725 expand_send(struct expstate *es, struct place *p, const char *buf, size_t len) |
| 19 | 726 { |
|
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727 size_t oldmax; |
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728 |
| 19 | 729 if (es->tobuf) { |
|
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730 assert(es->bufpos <= es->bufmax); |
| 19 | 731 if (es->bufpos + len > es->bufmax) { |
|
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732 oldmax = es->bufmax; |
| 19 | 733 if (es->bufmax == 0) { |
| 734 es->bufmax = 64; | |
| 735 } | |
| 736 while (es->bufpos + len > es->bufmax) { | |
| 737 es->bufmax *= 2; | |
| 738 } | |
|
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739 es->buf = dorealloc(es->buf, oldmax, es->bufmax); |
| 19 | 740 } |
| 741 memcpy(es->buf + es->bufpos, buf, len); | |
| 742 es->bufpos += len; | |
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743 assert(es->bufpos <= es->bufmax); |
| 19 | 744 } else { |
| 21 | 745 output(p, buf, len); |
| 19 | 746 } |
| 747 } | |
| 748 | |
| 749 static | |
| 750 void | |
| 21 | 751 expand_send_eof(struct expstate *es, struct place *p) |
| 19 | 752 { |
| 753 if (es->tobuf) { | |
| 21 | 754 expand_send(es, p, "", 1); |
| 19 | 755 es->bufpos--; |
| 756 } else { | |
| 757 output_eof(); | |
| 758 } | |
| 759 } | |
| 760 | |
| 761 static | |
| 762 void | |
| 161 | 763 expand_newarg(struct expstate *es, const char *buf, size_t len) |
| 19 | 764 { |
| 765 char *text; | |
| 766 | |
| 767 text = dostrndup(buf, len); | |
| 768 stringarray_add(&es->args, text, NULL); | |
| 769 } | |
| 770 | |
| 771 static | |
| 772 void | |
| 161 | 773 expand_appendarg(struct expstate *es, const char *buf, size_t len) |
| 19 | 774 { |
| 775 unsigned num; | |
| 776 char *text; | |
| 777 size_t oldlen; | |
| 778 | |
| 779 num = stringarray_num(&es->args); | |
| 780 assert(num > 0); | |
| 781 | |
| 782 text = stringarray_get(&es->args, num - 1); | |
| 783 oldlen = strlen(text); | |
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784 text = dorealloc(text, oldlen + 1, oldlen + len + 1); |
| 19 | 785 memcpy(text + oldlen, buf, len); |
| 786 text[oldlen+len] = '\0'; | |
| 787 stringarray_set(&es->args, num - 1, text); | |
| 788 } | |
| 789 | |
| 790 static | |
| 791 char * | |
| 28 | 792 expand_substitute(struct place *p, struct expstate *es) |
| 19 | 793 { |
| 794 struct expansionitem *ei; | |
| 795 unsigned i, num; | |
| 796 size_t len; | |
| 797 char *arg; | |
| 798 char *ret; | |
| 28 | 799 unsigned numargs, numparams; |
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800 char numbuf[64]; |
| 28 | 801 |
| 802 numargs = stringarray_num(&es->args); | |
| 803 numparams = stringarray_num(&es->curmacro->params); | |
| 804 | |
| 805 if (numargs == 0 && numparams == 1) { | |
| 806 /* no arguments <=> one empty argument */ | |
| 807 stringarray_add(&es->args, dostrdup(""), NULL); | |
| 808 numargs++; | |
| 809 } | |
| 810 if (numargs != numparams) { | |
| 811 complain(p, "Wrong number of arguments for macro %s; " | |
| 812 "found %u, expected %u", | |
| 813 es->curmacro->name, numargs, numparams); | |
| 814 complain_fail(); | |
| 815 while (numargs < numparams) { | |
| 816 stringarray_add(&es->args, dostrdup(""), NULL); | |
| 817 numargs++; | |
| 818 } | |
| 819 } | |
| 19 | 820 |
| 821 len = 0; | |
| 822 num = expansionitemarray_num(&es->curmacro->expansion); | |
| 823 for (i=0; i<num; i++) { | |
| 824 ei = expansionitemarray_get(&es->curmacro->expansion, i); | |
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825 switch (ei->itemtype) { |
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826 case EI_STRING: |
| 19 | 827 len += strlen(ei->string); |
|
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828 break; |
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829 case EI_PARAM: |
| 19 | 830 arg = stringarray_get(&es->args, ei->param); |
| 831 len += strlen(arg); | |
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832 break; |
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833 case EI_FILE: |
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834 len += strlen(place_getname(p)) + 2; |
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835 break; |
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836 case EI_LINE: |
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837 len += snprintf(numbuf, sizeof(numbuf), "%u", p->line); |
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838 break; |
| 19 | 839 } |
| 840 } | |
| 841 | |
| 842 ret = domalloc(len+1); | |
| 843 *ret = '\0'; | |
| 844 for (i=0; i<num; i++) { | |
| 845 ei = expansionitemarray_get(&es->curmacro->expansion, i); | |
|
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846 switch (ei->itemtype) { |
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847 case EI_STRING: |
| 19 | 848 strcat(ret, ei->string); |
|
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849 break; |
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850 case EI_PARAM: |
| 19 | 851 arg = stringarray_get(&es->args, ei->param); |
| 852 strcat(ret, arg); | |
|
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853 break; |
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854 case EI_FILE: |
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855 strcat(ret, "\""); |
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856 strcat(ret, place_getname(p)); |
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857 strcat(ret, "\""); |
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858 break; |
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859 case EI_LINE: |
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860 snprintf(numbuf, sizeof(numbuf), "%u", p->line); |
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861 strcat(ret, numbuf); |
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862 break; |
| 19 | 863 } |
| 864 } | |
| 865 | |
| 866 return ret; | |
| 867 } | |
| 868 | |
| 869 static | |
| 870 void | |
| 871 expand_domacro(struct expstate *es, struct place *p) | |
| 872 { | |
| 873 struct macro *m; | |
| 874 char *newbuf, *newbuf2; | |
| 875 | |
| 876 if (es->curmacro == NULL) { | |
| 877 /* defined() */ | |
| 878 if (stringarray_num(&es->args) != 1) { | |
| 879 complain(p, "Too many arguments for defined()"); | |
| 880 complain_fail(); | |
| 21 | 881 expand_send(es, p, "0", 1); |
| 19 | 882 return; |
| 883 } | |
| 884 m = macrotable_find(stringarray_get(&es->args, 0), false); | |
| 21 | 885 expand_send(es, p, (m != NULL) ? "1" : "0", 1); |
| 25 | 886 expstate_destroyargs(es); |
| 19 | 887 return; |
| 888 } | |
| 889 | |
| 890 assert(es->curmacro->inuse == false); | |
| 891 es->curmacro->inuse = true; | |
| 892 | |
| 28 | 893 newbuf = expand_substitute(p, es); |
| 19 | 894 newbuf2 = macroexpand(p, newbuf, strlen(newbuf), false); |
|
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895 dostrfree(newbuf); |
| 25 | 896 expstate_destroyargs(es); |
| 19 | 897 doexpand(es, p, newbuf2, strlen(newbuf2)); |
|
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898 dostrfree(newbuf2); |
| 19 | 899 |
| 900 es->curmacro->inuse = false; | |
| 901 } | |
| 902 | |
|
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903 /* |
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904 * The traditional behavior if a function-like macro appears without |
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905 * arguments is to pretend it isn't a macro; that is, just emit its |
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906 * name. |
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907 */ |
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908 static |
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909 void |
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910 expand_missingargs(struct expstate *es, struct place *p, bool needspace) |
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911 { |
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912 if (es->curmacro == NULL) { |
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913 /* defined */ |
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914 expand_send(es, p, "defined", 7); |
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915 return; |
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916 } |
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917 expand_send(es, p, es->curmacro->name, strlen(es->curmacro->name)); |
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918 /* send a space in case we ate whitespace after the macro name */ |
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919 if (needspace) { |
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920 expand_send(es, p, " ", 1); |
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921 } |
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922 } |
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923 |
| 19 | 924 static |
| 925 void | |
| 161 | 926 expand_got_ws(struct expstate *es, struct place *p, const char *buf, size_t len) |
| 19 | 927 { |
| 928 switch (es->state) { | |
| 929 case ES_NORMAL: | |
| 21 | 930 expand_send(es, p, buf, len); |
| 19 | 931 break; |
| 932 case ES_WANTLPAREN: | |
| 152 | 933 /* XXX notyet */ |
| 934 //expand_send(es, p, buf, len); | |
| 19 | 935 break; |
| 936 case ES_NOARG: | |
|
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937 expand_newarg(es, buf, len); |
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938 es->state = ES_HAVEARG; |
| 19 | 939 break; |
| 940 case ES_HAVEARG: | |
| 941 expand_appendarg(es, buf, len); | |
| 942 break; | |
| 943 } | |
| 944 } | |
| 945 | |
| 946 static | |
| 947 void | |
| 948 expand_got_word(struct expstate *es, struct place *p, char *buf, size_t len) | |
| 949 { | |
| 950 struct macro *m; | |
| 951 struct expansionitem *ei; | |
| 952 char *newbuf; | |
| 17 | 953 |
| 19 | 954 switch (es->state) { |
| 955 case ES_NORMAL: | |
| 956 if (es->honordefined && | |
| 957 len == 7 && !memcmp(buf, "defined", 7)) { | |
| 958 es->curmacro = NULL; | |
| 959 es->state = ES_WANTLPAREN; | |
| 960 break; | |
| 961 } | |
| 962 m = macrotable_findlen(buf, len, false); | |
|
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963 if (m == NULL || m->inuse) { |
| 21 | 964 expand_send(es, p, buf, len); |
|
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965 } else if (m->isspecial) { |
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966 es->curmacro = m; |
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967 newbuf = expand_substitute(p, es); |
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968 expand_send(es, p, newbuf, strlen(newbuf)); |
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969 dostrfree(newbuf); |
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970 es->curmacro = NULL; |
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971 m->inuse = false; |
| 19 | 972 } else if (!m->hasparams) { |
| 973 m->inuse = true; | |
| 974 assert(expansionitemarray_num(&m->expansion) == 1); | |
| 975 ei = expansionitemarray_get(&m->expansion, 0); | |
|
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976 assert(ei->itemtype == EI_STRING); |
| 19 | 977 newbuf = macroexpand(p, ei->string, |
| 978 strlen(ei->string), false); | |
| 979 doexpand(es, p, newbuf, strlen(newbuf)); | |
|
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980 dostrfree(newbuf); |
| 19 | 981 m->inuse = false; |
| 982 } else { | |
| 983 es->curmacro = m; | |
| 984 es->state = ES_WANTLPAREN; | |
| 985 } | |
| 986 break; | |
| 987 case ES_WANTLPAREN: | |
| 988 if (es->curmacro != NULL) { | |
|
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989 expand_missingargs(es, p, true); |
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990 es->state = ES_NORMAL; |
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991 /* try again */ |
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992 expand_got_word(es, p, buf, len); |
| 19 | 993 } else { |
| 994 /* "defined foo" means "defined(foo)" */ | |
| 995 expand_newarg(es, buf, len); | |
| 996 es->state = ES_NORMAL; | |
| 997 expand_domacro(es, p); | |
| 998 } | |
| 999 break; | |
| 1000 case ES_NOARG: | |
| 1001 expand_newarg(es, buf, len); | |
| 1002 es->state = ES_HAVEARG; | |
| 1003 break; | |
| 1004 case ES_HAVEARG: | |
| 1005 expand_appendarg(es, buf, len); | |
| 1006 break; | |
| 1007 } | |
| 1008 } | |
| 1009 | |
| 1010 static | |
| 1011 void | |
| 1012 expand_got_lparen(struct expstate *es, struct place *p, char *buf, size_t len) | |
| 1013 { | |
| 1014 switch (es->state) { | |
| 1015 case ES_NORMAL: | |
| 21 | 1016 expand_send(es, p, buf, len); |
| 19 | 1017 break; |
| 1018 case ES_WANTLPAREN: | |
| 1019 es->state = ES_NOARG; | |
| 1020 break; | |
| 1021 case ES_NOARG: | |
| 1022 expand_newarg(es, buf, len); | |
| 1023 es->state = ES_HAVEARG; | |
| 1024 es->argparens++; | |
| 1025 break; | |
| 1026 case ES_HAVEARG: | |
| 1027 expand_appendarg(es, buf, len); | |
| 1028 es->argparens++; | |
| 1029 break; | |
| 1030 } | |
| 1031 } | |
| 1032 | |
| 1033 static | |
| 1034 void | |
| 1035 expand_got_rparen(struct expstate *es, struct place *p, char *buf, size_t len) | |
| 1036 { | |
| 1037 switch (es->state) { | |
| 1038 case ES_NORMAL: | |
| 21 | 1039 expand_send(es, p, buf, len); |
| 19 | 1040 break; |
| 1041 case ES_WANTLPAREN: | |
|
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1042 expand_missingargs(es, p, false); |
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1043 es->state = ES_NORMAL; |
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1044 /* try again */ |
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1045 expand_got_rparen(es, p, buf, len); |
| 19 | 1046 break; |
| 1047 case ES_NOARG: | |
| 1048 assert(es->argparens == 0); | |
|
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1049 if (stringarray_num(&es->args) > 0) { |
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1050 /* we are after a comma; enter an empty argument */ |
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1051 expand_newarg(es, buf, 0); |
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1052 } |
| 19 | 1053 es->state = ES_NORMAL; |
| 1054 expand_domacro(es, p); | |
| 1055 break; | |
| 1056 case ES_HAVEARG: | |
| 1057 if (es->argparens > 0) { | |
| 1058 es->argparens--; | |
| 1059 expand_appendarg(es, buf, len); | |
| 1060 } else { | |
| 1061 es->state = ES_NORMAL; | |
| 1062 expand_domacro(es, p); | |
| 1063 } | |
| 1064 break; | |
| 1065 } | |
| 1066 } | |
| 1067 | |
| 1068 static | |
| 1069 void | |
| 1070 expand_got_comma(struct expstate *es, struct place *p, char *buf, size_t len) | |
| 1071 { | |
| 1072 switch (es->state) { | |
| 1073 case ES_NORMAL: | |
| 21 | 1074 expand_send(es, p, buf, len); |
| 19 | 1075 break; |
| 1076 case ES_WANTLPAREN: | |
|
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1077 expand_missingargs(es, p, false); |
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1078 es->state = ES_NORMAL; |
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1079 /* try again */ |
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1080 expand_got_comma(es, p, buf, len); |
| 19 | 1081 break; |
| 1082 case ES_NOARG: | |
| 1083 assert(es->argparens == 0); | |
| 1084 expand_newarg(es, buf, 0); | |
| 1085 break; | |
| 1086 case ES_HAVEARG: | |
| 1087 if (es->argparens > 0) { | |
| 1088 expand_appendarg(es, buf, len); | |
| 1089 } else { | |
| 1090 es->state = ES_NOARG; | |
| 1091 } | |
| 1092 break; | |
| 1093 } | |
| 1094 } | |
| 1095 | |
| 1096 static | |
| 1097 void | |
| 1098 expand_got_other(struct expstate *es, struct place *p, char *buf, size_t len) | |
| 1099 { | |
| 1100 switch (es->state) { | |
| 1101 case ES_NORMAL: | |
| 21 | 1102 expand_send(es, p, buf, len); |
| 19 | 1103 break; |
| 1104 case ES_WANTLPAREN: | |
|
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1105 expand_missingargs(es, p, false); |
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1106 es->state = ES_NORMAL; |
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1107 /* try again */ |
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1108 expand_got_other(es, p, buf, len); |
| 19 | 1109 break; |
| 1110 case ES_NOARG: | |
| 1111 expand_newarg(es, buf, len); | |
| 1112 es->state = ES_HAVEARG; | |
| 1113 break; | |
| 1114 case ES_HAVEARG: | |
| 1115 expand_appendarg(es, buf, len); | |
| 1116 break; | |
| 1117 } | |
| 1118 } | |
| 1119 | |
| 1120 static | |
| 1121 void | |
| 1122 expand_got_eof(struct expstate *es, struct place *p) | |
| 1123 { | |
| 1124 switch (es->state) { | |
| 1125 case ES_NORMAL: | |
| 1126 break; | |
| 1127 case ES_WANTLPAREN: | |
|
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1128 expand_missingargs(es, p, false); |
| 19 | 1129 break; |
| 1130 case ES_NOARG: | |
| 1131 case ES_HAVEARG: | |
| 1132 if (es->curmacro) { | |
| 1133 complain(p, "Unclosed argument list for macro %s", | |
| 1134 es->curmacro->name); | |
| 1135 } else { | |
| 1136 complain(p, "Unclosed argument list for defined()"); | |
| 1137 } | |
| 1138 complain_fail(); | |
| 1139 expstate_destroyargs(es); | |
| 1140 break; | |
| 1141 } | |
| 88 | 1142 expand_send_eof(es, p); |
| 19 | 1143 es->state = ES_NORMAL; |
| 1144 es->curmacro = NULL; | |
| 1145 es->argparens = 0; | |
| 1146 } | |
| 1147 | |
| 1148 static | |
| 1149 void | |
| 1150 doexpand(struct expstate *es, struct place *p, char *buf, size_t len) | |
| 1151 { | |
| 85 | 1152 char *s; |
| 19 | 1153 size_t x; |
| 85 | 1154 bool inquote = false; |
|
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1155 char quote = '\0'; |
| 19 | 1156 |
| 1157 while (len > 0) { | |
| 1158 x = strspn(buf, ws); | |
| 28 | 1159 if (x > len) { |
| 1160 /* XXX gross, need strnspn */ | |
| 1161 x = len; | |
| 1162 } | |
| 1163 | |
| 19 | 1164 if (x > 0) { |
| 1165 expand_got_ws(es, p, buf, x); | |
| 1166 buf += x; | |
| 1167 len -= x; | |
| 28 | 1168 continue; |
| 19 | 1169 } |
| 1170 | |
| 1171 x = strspn(buf, alnum); | |
| 28 | 1172 if (x > len) { |
| 1173 /* XXX gross, need strnspn */ | |
| 1174 x = len; | |
| 1175 } | |
| 1176 | |
| 145 | 1177 if (!inquote && x > 0) { |
| 19 | 1178 expand_got_word(es, p, buf, x); |
| 1179 buf += x; | |
| 1180 len -= x; | |
| 1181 continue; | |
| 1182 } | |
| 1183 | |
| 85 | 1184 if (!inquote && len > 1 && buf[0] == '/' && buf[1] == '*') { |
| 1185 s = strstr(buf, "*/"); | |
| 1186 if (s) { | |
| 1187 x = s - buf; | |
| 1188 } else { | |
| 1189 x = len; | |
| 1190 } | |
| 1191 expand_got_ws(es, p, buf, x); | |
| 1192 buf += x; | |
| 1193 len -= x; | |
| 1194 continue; | |
| 1195 } | |
| 1196 | |
|
129
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David A. Holland
parents:
128
diff
changeset
|
1197 if (!inquote && buf[0] == '(') { |
| 19 | 1198 expand_got_lparen(es, p, buf, 1); |
| 1199 buf++; | |
| 1200 len--; | |
| 1201 continue; | |
| 1202 } | |
| 1203 | |
|
129
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David A. Holland
parents:
128
diff
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|
1204 if (!inquote && buf[0] == ')') { |
| 19 | 1205 expand_got_rparen(es, p, buf, 1); |
| 1206 buf++; | |
| 1207 len--; | |
| 1208 continue; | |
| 1209 } | |
| 1210 | |
|
129
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Don't recognize macro argument parens or commas within quotes.
David A. Holland
parents:
128
diff
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|
1211 if (!inquote && buf[0] == ',') { |
| 19 | 1212 expand_got_comma(es, p, buf, 1); |
| 1213 buf++; | |
| 1214 len--; | |
| 1215 continue; | |
| 1216 } | |
| 1217 | |
|
128
1cda505ddc78
Don't expand macros within character constants.
David A. Holland
parents:
118
diff
changeset
|
1218 if (len > 1 && buf[0] == '\\' && |
|
1cda505ddc78
Don't expand macros within character constants.
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parents:
118
diff
changeset
|
1219 (buf[1] == '"' || buf[1] == '\'')) { |
| 85 | 1220 expand_got_other(es, p, buf, 2); |
| 1221 buf += 2; | |
| 1222 len -= 2; | |
| 1223 continue; | |
| 1224 } | |
|
128
1cda505ddc78
Don't expand macros within character constants.
David A. Holland
parents:
118
diff
changeset
|
1225 if (!inquote && (buf[0] == '"' || buf[0] == '\'')) { |
|
1cda505ddc78
Don't expand macros within character constants.
David A. Holland
parents:
118
diff
changeset
|
1226 inquote = true; |
|
1cda505ddc78
Don't expand macros within character constants.
David A. Holland
parents:
118
diff
changeset
|
1227 quote = buf[0]; |
|
1cda505ddc78
Don't expand macros within character constants.
David A. Holland
parents:
118
diff
changeset
|
1228 } else if (inquote && buf[0] == quote) { |
|
1cda505ddc78
Don't expand macros within character constants.
David A. Holland
parents:
118
diff
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|
1229 inquote = false; |
| 85 | 1230 } |
| 1231 | |
| 19 | 1232 expand_got_other(es, p, buf, 1); |
| 1233 buf++; | |
| 1234 len--; | |
| 1235 } | |
| 1236 } | |
| 1237 | |
| 1238 char * | |
| 1239 macroexpand(struct place *p, char *buf, size_t len, bool honordefined) | |
| 1240 { | |
| 1241 struct expstate es; | |
| 1242 char *ret; | |
| 1243 | |
| 1244 expstate_init(&es, true, honordefined); | |
| 1245 doexpand(&es, p, buf, len); | |
| 1246 expand_got_eof(&es, p); | |
| 40 | 1247 |
| 1248 /* trim to fit, so the malloc debugging won't complain */ | |
| 1249 es.buf = dorealloc(es.buf, es.bufmax, strlen(es.buf) + 1); | |
| 1250 | |
| 19 | 1251 ret = es.buf; |
| 1252 es.buf = NULL; | |
|
39
337110e7240a
Pass the size to free; it makes debug checking easier.
David A. Holland
parents:
38
diff
changeset
|
1253 es.bufpos = es.bufmax = 0; |
| 40 | 1254 |
| 19 | 1255 expstate_cleanup(&es); |
| 1256 | |
| 1257 return ret; | |
| 1258 } | |
| 1259 | |
| 1260 void | |
| 1261 macro_sendline(struct place *p, char *buf, size_t len) | |
| 1262 { | |
| 1263 doexpand(&mainstate, p, buf, len); | |
|
162
82cc6fa54b01
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Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1264 switch (mainstate.state) { |
|
82cc6fa54b01
newline during a macro invocation counts as space. Behavior differs from
Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1265 case ES_NORMAL: |
|
82cc6fa54b01
newline during a macro invocation counts as space. Behavior differs from
Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1266 output(p, "\n", 1); |
|
82cc6fa54b01
newline during a macro invocation counts as space. Behavior differs from
Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1267 break; |
|
82cc6fa54b01
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Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1268 case ES_WANTLPAREN: |
|
82cc6fa54b01
newline during a macro invocation counts as space. Behavior differs from
Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1269 case ES_NOARG: |
|
82cc6fa54b01
newline during a macro invocation counts as space. Behavior differs from
Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1270 case ES_HAVEARG: |
|
82cc6fa54b01
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Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1271 expand_got_ws(&mainstate, p, " ", 1); |
|
82cc6fa54b01
newline during a macro invocation counts as space. Behavior differs from
Joerg Sonnenberger <joerg@bec.de>
parents:
161
diff
changeset
|
1272 break; |
|
82cc6fa54b01
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Joerg Sonnenberger <joerg@bec.de>
parents:
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diff
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|
1273 } |
| 19 | 1274 } |
| 1275 | |
| 1276 void | |
| 1277 macro_sendeof(struct place *p) | |
| 1278 { | |
| 1279 expand_got_eof(&mainstate, p); | |
| 1280 } | |
| 17 | 1281 |
| 1282 //////////////////////////////////////////////////////////// | |
| 1283 // module initialization | |
| 1284 | |
| 1285 void | |
| 1286 macros_init(void) | |
| 1287 { | |
| 1288 macrotable_init(); | |
| 19 | 1289 expstate_init(&mainstate, false, false); |
| 17 | 1290 } |
| 1291 | |
| 1292 void | |
| 1293 macros_cleanup(void) | |
| 1294 { | |
| 19 | 1295 expstate_cleanup(&mainstate); |
| 17 | 1296 macrotable_cleanup(); |
| 1297 } |