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annotate macro.c @ 182:f7814226906c
very minor changes from openbsd
| author | David A. Holland |
|---|---|
| date | Fri, 12 Jun 2015 03:21:36 -0400 |
| parents | 6119608a9817 |
| children | d359d9b86327 |
| 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_STRING, EI_PARAM, EI_FILE, EI_LINE } itemtype; |
| 19 | 43 union { |
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44 char *string; /* EI_STRING */ |
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45 unsigned param; /* EI_PARAM */ |
| 19 | 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; | |
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54 unsigned hash; |
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55 char *name; |
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56 bool hasparams; |
| 18 | 57 struct stringarray params; |
| 19 | 58 struct expansionitemarray expansion; |
| 59 bool inuse; | |
| 17 | 60 }; |
| 107 | 61 DECLARRAY(macro, static UNUSED); |
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62 DEFARRAY(macro, static); |
| 107 | 63 DECLARRAY(macroarray, static UNUSED); |
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64 DEFARRAY(macroarray, static); |
| 17 | 65 |
| 66 static struct macroarrayarray macros; | |
| 67 static unsigned total_macros; | |
| 68 static unsigned hashmask; | |
| 69 | |
| 70 //////////////////////////////////////////////////////////// | |
| 71 // macro structure ops | |
| 72 | |
| 73 static | |
| 19 | 74 struct expansionitem * |
| 75 expansionitem_create_string(const char *string) | |
| 76 { | |
| 77 struct expansionitem *ei; | |
| 78 | |
| 79 ei = domalloc(sizeof(*ei)); | |
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80 ei->itemtype = EI_STRING; |
| 19 | 81 ei->string = dostrdup(string); |
| 82 return ei; | |
| 83 } | |
| 84 | |
| 85 static | |
| 86 struct expansionitem * | |
| 87 expansionitem_create_stringlen(const char *string, size_t len) | |
| 88 { | |
| 89 struct expansionitem *ei; | |
| 90 | |
| 91 ei = domalloc(sizeof(*ei)); | |
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92 ei->itemtype = EI_STRING; |
| 19 | 93 ei->string = dostrndup(string, len); |
| 94 return ei; | |
| 95 } | |
| 96 | |
| 97 static | |
| 98 struct expansionitem * | |
| 99 expansionitem_create_param(unsigned param) | |
| 100 { | |
| 101 struct expansionitem *ei; | |
| 102 | |
| 103 ei = domalloc(sizeof(*ei)); | |
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104 ei->itemtype = EI_PARAM; |
| 19 | 105 ei->param = param; |
| 106 return ei; | |
| 107 } | |
| 108 | |
| 109 static | |
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110 struct expansionitem * |
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111 expansionitem_create_file(void) |
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112 { |
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113 struct expansionitem *ei; |
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114 |
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115 ei = domalloc(sizeof(*ei)); |
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116 ei->itemtype = EI_FILE; |
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117 return ei; |
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118 } |
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119 |
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120 static |
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121 struct expansionitem * |
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122 expansionitem_create_line(void) |
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123 { |
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124 struct expansionitem *ei; |
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125 |
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126 ei = domalloc(sizeof(*ei)); |
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127 ei->itemtype = EI_LINE; |
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128 return ei; |
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129 } |
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130 |
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131 static |
| 19 | 132 void |
| 133 expansionitem_destroy(struct expansionitem *ei) | |
| 134 { | |
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135 switch (ei->itemtype) { |
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136 case EI_STRING: |
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137 dostrfree(ei->string); |
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138 break; |
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139 case EI_PARAM: |
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140 case EI_FILE: |
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141 case EI_LINE: |
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142 break; |
| 19 | 143 } |
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144 dofree(ei, sizeof(*ei)); |
| 19 | 145 } |
| 146 | |
| 147 static | |
| 148 bool | |
| 149 expansionitem_eq(const struct expansionitem *ei1, | |
| 150 const struct expansionitem *ei2) | |
| 151 { | |
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152 if (ei1->itemtype != ei2->itemtype) { |
| 19 | 153 return false; |
| 154 } | |
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155 switch (ei1->itemtype) { |
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156 case EI_STRING: |
| 19 | 157 if (strcmp(ei1->string, ei2->string) != 0) { |
| 158 return false; | |
| 159 } | |
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160 break; |
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161 case EI_PARAM: |
| 19 | 162 if (ei1->param != ei2->param) { |
| 163 return false; | |
| 164 } | |
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165 break; |
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166 case EI_FILE: |
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167 case EI_LINE: |
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168 break; |
| 19 | 169 } |
| 170 return true; | |
| 171 } | |
| 172 | |
| 173 static | |
| 17 | 174 struct macro * |
| 18 | 175 macro_create(struct place *p1, const char *name, unsigned hash, |
| 19 | 176 struct place *p2) |
| 17 | 177 { |
| 178 struct macro *m; | |
| 179 | |
| 180 m = domalloc(sizeof(*m)); | |
| 181 m->defplace = *p1; | |
| 182 m->expansionplace = *p2; | |
| 183 m->hash = hash; | |
| 184 m->name = dostrdup(name); | |
| 18 | 185 m->hasparams = false; |
| 186 stringarray_init(&m->params); | |
| 19 | 187 expansionitemarray_init(&m->expansion); |
| 188 m->inuse = false; | |
| 17 | 189 return m; |
| 190 } | |
| 191 | |
| 19 | 192 DESTROYALL_ARRAY(expansionitem, ); |
| 193 | |
| 17 | 194 static |
| 195 void | |
| 196 macro_destroy(struct macro *m) | |
| 197 { | |
| 19 | 198 expansionitemarray_destroyall(&m->expansion); |
| 199 expansionitemarray_cleanup(&m->expansion); | |
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200 dostrfree(m->name); |
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201 dofree(m, sizeof(*m)); |
| 17 | 202 } |
| 203 | |
| 18 | 204 static |
| 205 bool | |
| 206 macro_eq(const struct macro *m1, const struct macro *m2) | |
| 207 { | |
| 208 unsigned num1, num2, i; | |
| 19 | 209 struct expansionitem *ei1, *ei2; |
| 18 | 210 const char *p1, *p2; |
| 211 | |
| 212 if (strcmp(m1->name, m2->name) != 0) { | |
| 213 return false; | |
| 214 } | |
| 215 | |
| 216 if (m1->hasparams != m2->hasparams) { | |
| 217 return false; | |
| 218 } | |
| 219 | |
| 19 | 220 num1 = expansionitemarray_num(&m1->expansion); |
| 221 num2 = expansionitemarray_num(&m2->expansion); | |
| 222 if (num1 != num2) { | |
| 18 | 223 return false; |
| 224 } | |
| 225 | |
| 19 | 226 for (i=0; i<num1; i++) { |
| 227 ei1 = expansionitemarray_get(&m1->expansion, i); | |
| 228 ei2 = expansionitemarray_get(&m2->expansion, i); | |
| 229 if (!expansionitem_eq(ei1, ei2)) { | |
| 230 return false; | |
| 231 } | |
| 232 } | |
| 233 | |
| 18 | 234 num1 = stringarray_num(&m1->params); |
| 235 num2 = stringarray_num(&m2->params); | |
| 236 if (num1 != num2) { | |
| 237 return false; | |
| 238 } | |
| 239 | |
| 240 for (i=0; i<num1; i++) { | |
| 241 p1 = stringarray_get(&m1->params, i); | |
| 242 p2 = stringarray_get(&m2->params, i); | |
| 243 if (strcmp(p1, p2) != 0) { | |
| 244 return false; | |
| 245 } | |
| 246 } | |
| 247 return true; | |
| 248 } | |
| 249 | |
| 17 | 250 //////////////////////////////////////////////////////////// |
| 251 // macro table | |
| 252 | |
| 253 /* | |
| 254 * Unless I've screwed up, this is something called Fletcher's Checksum | |
| 255 * that showed up in Dr. Dobbs in, according to my notes, May 1992. The | |
| 256 * implementation is new. | |
| 257 */ | |
| 258 static | |
| 259 unsigned | |
| 19 | 260 hashfunc(const char *s, size_t len) |
| 17 | 261 { |
| 262 uint16_t x1, x2, a; | |
| 19 | 263 size_t i; |
| 17 | 264 |
| 265 x1 = (uint16_t) (len >> 16); | |
| 266 x2 = (uint16_t) (len); | |
| 267 if (x1==0) { | |
| 268 x1++; | |
| 269 } | |
| 270 if (x2==0) { | |
| 271 x2++; | |
| 272 } | |
| 273 | |
| 274 for (i=0; i<len; i+=2) { | |
| 275 if (i==len-1) { | |
| 276 a = (unsigned char)s[i]; | |
| 277 /* don't run off the end of the array */ | |
| 278 } | |
| 279 else { | |
| 280 a = (unsigned char)s[i] + | |
| 281 ((uint16_t)(unsigned char)s[i+1] << 8); | |
| 282 } | |
| 283 x1 += a; | |
| 284 if (x1 < a) { | |
| 285 x1++; | |
| 286 } | |
| 287 x2 += x1; | |
| 288 if (x2 < x1) { | |
| 289 x2++; | |
| 290 } | |
| 291 } | |
| 292 | |
| 293 x1 ^= 0xffff; | |
| 294 x2 ^= 0xffff; | |
| 295 return ((uint32_t)x2)*65535U + x1; | |
| 296 } | |
| 297 | |
| 298 static | |
| 299 void | |
| 300 macrotable_init(void) | |
| 301 { | |
| 302 unsigned i; | |
| 303 | |
| 304 macroarrayarray_init(¯os); | |
| 305 macroarrayarray_setsize(¯os, 4); | |
| 306 for (i=0; i<4; i++) { | |
| 307 macroarrayarray_set(¯os, i, NULL); | |
| 308 } | |
| 309 total_macros = 0; | |
| 310 hashmask = 0x3; | |
| 311 } | |
| 312 | |
| 313 DESTROYALL_ARRAY(macro, ); | |
| 314 | |
| 315 static | |
| 316 void | |
| 317 macrotable_cleanup(void) | |
| 318 { | |
| 319 struct macroarray *bucket; | |
| 320 unsigned numbuckets, i; | |
| 321 | |
| 322 numbuckets = macroarrayarray_num(¯os); | |
| 323 for (i=0; i<numbuckets; i++) { | |
| 324 bucket = macroarrayarray_get(¯os, i); | |
| 28 | 325 if (bucket != NULL) { |
| 326 macroarray_destroyall(bucket); | |
| 327 macroarray_destroy(bucket); | |
| 328 } | |
| 17 | 329 } |
| 330 macroarrayarray_setsize(¯os, 0); | |
| 331 macroarrayarray_cleanup(¯os); | |
| 332 } | |
| 333 | |
| 334 static | |
| 335 struct macro * | |
| 19 | 336 macrotable_findlen(const char *name, size_t len, bool remove) |
| 17 | 337 { |
| 338 unsigned hash; | |
| 339 struct macroarray *bucket; | |
| 340 struct macro *m, *m2; | |
| 341 unsigned i, num; | |
| 19 | 342 size_t mlen; |
| 17 | 343 |
| 19 | 344 hash = hashfunc(name, len); |
| 17 | 345 bucket = macroarrayarray_get(¯os, hash & hashmask); |
| 346 if (bucket == NULL) { | |
| 347 return NULL; | |
| 348 } | |
| 349 num = macroarray_num(bucket); | |
| 350 for (i=0; i<num; i++) { | |
| 351 m = macroarray_get(bucket, i); | |
| 352 if (hash != m->hash) { | |
| 353 continue; | |
| 354 } | |
| 19 | 355 mlen = strlen(m->name); |
| 356 if (len == mlen && !memcmp(name, m->name, len)) { | |
| 17 | 357 if (remove) { |
| 358 if (i < num-1) { | |
| 359 m2 = macroarray_get(bucket, num-1); | |
| 360 macroarray_set(bucket, i, m2); | |
| 361 } | |
| 362 macroarray_setsize(bucket, num-1); | |
| 363 total_macros--; | |
| 364 } | |
| 365 return m; | |
| 366 } | |
| 367 } | |
| 368 return NULL; | |
| 369 } | |
| 370 | |
| 371 static | |
| 19 | 372 struct macro * |
| 373 macrotable_find(const char *name, bool remove) | |
| 374 { | |
| 375 return macrotable_findlen(name, strlen(name), remove); | |
| 376 } | |
| 377 | |
| 378 static | |
| 17 | 379 void |
| 380 macrotable_rehash(void) | |
| 381 { | |
| 382 struct macroarray *newbucket, *oldbucket; | |
| 383 struct macro *m; | |
| 384 unsigned newmask, tossbit; | |
| 385 unsigned numbuckets, i; | |
| 386 unsigned oldnum, j, k; | |
| 387 | |
| 388 numbuckets = macroarrayarray_num(¯os); | |
| 389 macroarrayarray_setsize(¯os, numbuckets*2); | |
| 390 | |
| 391 assert(hashmask == numbuckets - 1); | |
| 392 newmask = (hashmask << 1) | 1U; | |
| 74 | 393 tossbit = newmask & ~hashmask; |
| 17 | 394 hashmask = newmask; |
| 395 | |
| 396 for (i=0; i<numbuckets; i++) { | |
| 397 newbucket = NULL; | |
| 398 oldbucket = macroarrayarray_get(¯os, i); | |
| 74 | 399 if (oldbucket == NULL) { |
| 400 macroarrayarray_set(¯os, numbuckets + i, NULL); | |
| 401 continue; | |
| 402 } | |
| 17 | 403 oldnum = macroarray_num(oldbucket); |
| 404 for (j=0; j<oldnum; j++) { | |
| 405 m = macroarray_get(oldbucket, j); | |
| 406 if (m->hash & tossbit) { | |
| 407 if (newbucket == NULL) { | |
| 408 newbucket = macroarray_create(); | |
| 409 } | |
| 410 macroarray_set(oldbucket, j, NULL); | |
| 411 macroarray_add(newbucket, m, NULL); | |
| 412 } | |
| 413 } | |
| 414 for (j=k=0; j<oldnum; j++) { | |
| 415 m = macroarray_get(oldbucket, j); | |
| 74 | 416 if (m != NULL) { |
| 417 if (k < j) { | |
| 418 macroarray_set(oldbucket, k, m); | |
| 419 } | |
| 420 k++; | |
| 17 | 421 } |
| 422 } | |
| 423 macroarray_setsize(oldbucket, k); | |
| 424 macroarrayarray_set(¯os, numbuckets + i, newbucket); | |
| 425 } | |
| 426 } | |
| 427 | |
| 428 static | |
| 429 void | |
| 430 macrotable_add(struct macro *m) | |
| 431 { | |
| 432 unsigned hash; | |
| 433 struct macroarray *bucket; | |
| 434 unsigned numbuckets; | |
| 435 | |
| 436 numbuckets = macroarrayarray_num(¯os); | |
| 437 if (total_macros > 0 && total_macros / numbuckets > 9) { | |
| 438 macrotable_rehash(); | |
| 439 } | |
| 440 | |
| 19 | 441 hash = hashfunc(m->name, strlen(m->name)); |
| 17 | 442 bucket = macroarrayarray_get(¯os, hash & hashmask); |
| 443 if (bucket == NULL) { | |
| 444 bucket = macroarray_create(); | |
| 445 macroarrayarray_set(¯os, hash & hashmask, bucket); | |
| 446 } | |
| 447 macroarray_add(bucket, m, NULL); | |
| 448 total_macros++; | |
| 449 } | |
| 450 | |
| 451 //////////////////////////////////////////////////////////// | |
| 452 // external macro definition interface | |
| 453 | |
| 18 | 454 static |
| 455 struct macro * | |
| 456 macro_define_common_start(struct place *p1, const char *macro, | |
| 19 | 457 struct place *p2) |
| 17 | 458 { |
| 459 struct macro *m; | |
| 19 | 460 unsigned hash; |
| 17 | 461 |
| 18 | 462 if (!is_identifier(macro)) { |
| 463 complain(p1, "Invalid macro name %s", macro); | |
| 464 complain_fail(); | |
| 465 } | |
| 466 | |
| 19 | 467 hash = hashfunc(macro, strlen(macro)); |
| 468 m = macro_create(p1, macro, hash, p2); | |
| 18 | 469 return m; |
| 470 } | |
| 471 | |
| 472 static | |
| 473 void | |
| 474 macro_define_common_end(struct macro *m) | |
| 475 { | |
| 476 struct macro *oldm; | |
| 477 bool ok; | |
| 478 | |
| 479 oldm = macrotable_find(m->name, false); | |
| 480 if (oldm != NULL) { | |
| 481 ok = macro_eq(m, oldm); | |
| 482 if (ok) { | |
|
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483 /* in traditional cpp this is silent */ |
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484 //complain(&m->defplace, |
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485 // "Warning: redefinition of %s", m->name); |
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486 //complain(&oldm->defplace, |
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487 // "Previous definition was here"); |
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488 //if (mode.werror) { |
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489 // complain_fail(); |
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490 //} |
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491 } else { |
| 18 | 492 complain(&m->defplace, |
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493 "Warning: non-identical redefinition of %s", |
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494 m->name); |
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495 complain(&oldm->defplace, |
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496 "Previous definition was here"); |
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497 /* in traditional cpp this is not fatal */ |
| 17 | 498 if (mode.werror) { |
| 499 complain_fail(); | |
| 500 } | |
| 501 } | |
| 18 | 502 macro_destroy(m); |
| 17 | 503 return; |
| 504 } | |
| 18 | 505 macrotable_add(m); |
| 506 } | |
| 17 | 507 |
| 18 | 508 static |
| 509 void | |
| 510 macro_parse_parameters(struct macro *m, struct place *p, const char *params) | |
| 511 { | |
| 512 size_t len; | |
| 513 const char *s; | |
| 514 char *param; | |
| 515 | |
| 516 while (params != NULL) { | |
| 517 len = strspn(params, ws); | |
| 518 params += len; | |
| 519 p->column += len; | |
| 520 s = strchr(params, ','); | |
| 521 if (s) { | |
| 522 len = s-params; | |
| 523 param = dostrndup(params, len); | |
| 524 s++; | |
| 525 } else { | |
| 526 len = strlen(params); | |
| 527 param = dostrndup(params, len); | |
| 528 } | |
| 529 notrailingws(param, strlen(param)); | |
| 530 if (!is_identifier(param)) { | |
| 531 complain(p, "Invalid macro parameter name %s", param); | |
| 532 complain_fail(); | |
| 533 } else { | |
| 534 stringarray_add(&m->params, param, NULL); | |
| 535 } | |
| 536 params = s; | |
| 537 p->column += len; | |
| 538 } | |
| 539 } | |
| 540 | |
| 19 | 541 static |
| 542 bool | |
| 543 isparam(struct macro *m, const char *name, size_t len, unsigned *num_ret) | |
| 544 { | |
| 545 unsigned num, i; | |
| 546 const char *param; | |
| 547 | |
| 548 num = stringarray_num(&m->params); | |
| 549 for (i=0; i<num; i++) { | |
| 550 param = stringarray_get(&m->params, i); | |
| 27 | 551 if (strlen(param) == len && !memcmp(name, param, len)) { |
| 19 | 552 *num_ret = i; |
| 553 return true; | |
| 554 } | |
| 555 } | |
| 556 return false; | |
| 557 } | |
| 558 | |
| 559 static | |
| 560 void | |
| 561 macro_parse_expansion(struct macro *m, const char *buf) | |
| 562 { | |
| 563 size_t blockstart, wordstart, pos; | |
| 564 struct expansionitem *ei; | |
| 565 unsigned param; | |
| 566 | |
| 567 pos = blockstart = 0; | |
| 568 while (buf[pos] != '\0') { | |
| 569 pos += strspn(buf+pos, ws); | |
| 570 if (strchr(alnum, buf[pos])) { | |
| 571 wordstart = pos; | |
| 572 pos += strspn(buf+pos, alnum); | |
| 573 if (isparam(m, buf+wordstart, pos-wordstart, ¶m)) { | |
| 144 | 574 if (wordstart > blockstart) { |
| 19 | 575 ei = expansionitem_create_stringlen( |
| 576 buf + blockstart, | |
| 27 | 577 wordstart - blockstart); |
| 19 | 578 expansionitemarray_add(&m->expansion, |
| 579 ei, NULL); | |
| 580 } | |
| 581 ei = expansionitem_create_param(param); | |
| 582 expansionitemarray_add(&m->expansion, ei,NULL); | |
| 583 blockstart = pos; | |
| 584 continue; | |
| 585 } | |
| 586 continue; | |
| 587 } | |
| 588 pos++; | |
| 589 } | |
| 590 if (pos > blockstart) { | |
| 591 ei = expansionitem_create_stringlen(buf + blockstart, | |
| 25 | 592 pos - blockstart); |
| 19 | 593 expansionitemarray_add(&m->expansion, ei, NULL); |
| 594 } | |
| 595 } | |
| 596 | |
| 18 | 597 void |
| 598 macro_define_plain(struct place *p1, const char *macro, | |
| 599 struct place *p2, const char *expansion) | |
| 600 { | |
| 601 struct macro *m; | |
| 19 | 602 struct expansionitem *ei; |
| 18 | 603 |
| 19 | 604 m = macro_define_common_start(p1, macro, p2); |
| 605 ei = expansionitem_create_string(expansion); | |
| 606 expansionitemarray_add(&m->expansion, ei, NULL); | |
| 18 | 607 macro_define_common_end(m); |
| 608 } | |
| 609 | |
| 610 void | |
| 611 macro_define_params(struct place *p1, const char *macro, | |
| 612 struct place *p2, const char *params, | |
| 613 struct place *p3, const char *expansion) | |
| 614 { | |
| 615 struct macro *m; | |
| 616 | |
| 19 | 617 m = macro_define_common_start(p1, macro, p3); |
| 25 | 618 m->hasparams = true; |
| 18 | 619 macro_parse_parameters(m, p2, params); |
| 19 | 620 macro_parse_expansion(m, expansion); |
| 18 | 621 macro_define_common_end(m); |
| 17 | 622 } |
| 623 | |
| 624 void | |
|
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625 macro_define_magic(struct place *p, const char *macro) |
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626 { |
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627 struct macro *m; |
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628 struct expansionitem *ei; |
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629 |
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630 m = macro_define_common_start(p, macro, p); |
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631 if (!strcmp(macro, "__FILE__")) { |
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632 ei = expansionitem_create_file(); |
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633 } |
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634 else { |
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635 assert(!strcmp(macro, "__LINE__")); |
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636 ei = expansionitem_create_line(); |
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637 } |
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638 expansionitemarray_add(&m->expansion, ei, NULL); |
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639 macro_define_common_end(m); |
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640 } |
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641 |
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642 void |
| 17 | 643 macro_undef(const char *macro) |
| 644 { | |
| 645 struct macro *m; | |
| 646 | |
| 647 m = macrotable_find(macro, true); | |
| 648 if (m) { | |
| 649 macro_destroy(m); | |
| 650 } | |
| 651 } | |
| 652 | |
| 653 bool | |
| 654 macro_isdefined(const char *macro) | |
| 655 { | |
| 656 struct macro *m; | |
| 657 | |
| 658 m = macrotable_find(macro, false); | |
| 659 return m != NULL; | |
| 660 } | |
| 661 | |
| 662 //////////////////////////////////////////////////////////// | |
| 663 // macro expansion | |
| 664 | |
| 19 | 665 struct expstate { |
| 666 bool honordefined; | |
| 667 enum { ES_NORMAL, ES_WANTLPAREN, ES_NOARG, ES_HAVEARG } state; | |
| 668 struct macro *curmacro; | |
| 669 struct stringarray args; | |
| 670 unsigned argparens; | |
| 671 | |
| 672 bool tobuf; | |
| 673 char *buf; | |
| 674 size_t bufpos, bufmax; | |
| 675 }; | |
| 676 | |
| 677 static struct expstate mainstate; | |
| 678 | |
| 679 static void doexpand(struct expstate *es, struct place *p, | |
|
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680 const char *buf, size_t len); |
| 19 | 681 |
| 682 static | |
| 683 void | |
| 684 expstate_init(struct expstate *es, bool tobuf, bool honordefined) | |
| 685 { | |
| 686 es->honordefined = honordefined; | |
| 687 es->state = ES_NORMAL; | |
| 688 es->curmacro = NULL; | |
| 689 stringarray_init(&es->args); | |
| 690 es->argparens = 0; | |
| 691 es->tobuf = tobuf; | |
| 692 es->buf = NULL; | |
| 693 es->bufpos = 0; | |
| 694 es->bufmax = 0; | |
| 695 } | |
| 696 | |
| 697 static | |
| 698 void | |
| 699 expstate_cleanup(struct expstate *es) | |
| 700 { | |
| 701 assert(es->state == ES_NORMAL); | |
| 702 stringarray_cleanup(&es->args); | |
| 703 if (es->buf) { | |
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704 dofree(es->buf, es->bufmax); |
| 19 | 705 } |
| 706 } | |
| 707 | |
| 708 static | |
| 709 void | |
| 710 expstate_destroyargs(struct expstate *es) | |
| 711 { | |
| 712 unsigned i, num; | |
| 713 | |
| 714 num = stringarray_num(&es->args); | |
| 715 for (i=0; i<num; i++) { | |
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716 dostrfree(stringarray_get(&es->args, i)); |
| 19 | 717 } |
| 718 stringarray_setsize(&es->args, 0); | |
| 719 } | |
| 720 | |
| 721 static | |
| 722 void | |
| 21 | 723 expand_send(struct expstate *es, struct place *p, const char *buf, size_t len) |
| 19 | 724 { |
|
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725 size_t oldmax; |
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726 |
| 19 | 727 if (es->tobuf) { |
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728 assert(es->bufpos <= es->bufmax); |
| 19 | 729 if (es->bufpos + len > es->bufmax) { |
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730 oldmax = es->bufmax; |
| 19 | 731 if (es->bufmax == 0) { |
| 732 es->bufmax = 64; | |
| 733 } | |
| 734 while (es->bufpos + len > es->bufmax) { | |
| 735 es->bufmax *= 2; | |
| 736 } | |
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737 es->buf = dorealloc(es->buf, oldmax, es->bufmax); |
| 19 | 738 } |
| 739 memcpy(es->buf + es->bufpos, buf, len); | |
| 740 es->bufpos += len; | |
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741 assert(es->bufpos <= es->bufmax); |
| 19 | 742 } else { |
| 21 | 743 output(p, buf, len); |
| 19 | 744 } |
| 745 } | |
| 746 | |
| 747 static | |
| 748 void | |
| 21 | 749 expand_send_eof(struct expstate *es, struct place *p) |
| 19 | 750 { |
| 751 if (es->tobuf) { | |
| 21 | 752 expand_send(es, p, "", 1); |
| 19 | 753 es->bufpos--; |
| 754 } else { | |
| 755 output_eof(); | |
| 756 } | |
| 757 } | |
| 758 | |
| 759 static | |
| 760 void | |
| 161 | 761 expand_newarg(struct expstate *es, const char *buf, size_t len) |
| 19 | 762 { |
| 763 char *text; | |
| 764 | |
| 765 text = dostrndup(buf, len); | |
| 766 stringarray_add(&es->args, text, NULL); | |
| 767 } | |
| 768 | |
| 769 static | |
| 770 void | |
| 161 | 771 expand_appendarg(struct expstate *es, const char *buf, size_t len) |
| 19 | 772 { |
| 773 unsigned num; | |
| 774 char *text; | |
| 775 size_t oldlen; | |
| 776 | |
| 777 num = stringarray_num(&es->args); | |
| 778 assert(num > 0); | |
| 779 | |
| 780 text = stringarray_get(&es->args, num - 1); | |
| 781 oldlen = strlen(text); | |
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782 text = dorealloc(text, oldlen + 1, oldlen + len + 1); |
| 19 | 783 memcpy(text + oldlen, buf, len); |
| 784 text[oldlen+len] = '\0'; | |
| 785 stringarray_set(&es->args, num - 1, text); | |
| 786 } | |
| 787 | |
| 788 static | |
| 789 char * | |
| 28 | 790 expand_substitute(struct place *p, struct expstate *es) |
| 19 | 791 { |
| 792 struct expansionitem *ei; | |
| 793 unsigned i, num; | |
| 794 size_t len; | |
| 795 char *arg; | |
| 796 char *ret; | |
| 28 | 797 unsigned numargs, numparams; |
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798 char numbuf[64]; |
| 28 | 799 |
| 800 numargs = stringarray_num(&es->args); | |
| 801 numparams = stringarray_num(&es->curmacro->params); | |
| 802 | |
| 803 if (numargs == 0 && numparams == 1) { | |
| 804 /* no arguments <=> one empty argument */ | |
| 805 stringarray_add(&es->args, dostrdup(""), NULL); | |
| 806 numargs++; | |
| 807 } | |
| 808 if (numargs != numparams) { | |
| 809 complain(p, "Wrong number of arguments for macro %s; " | |
| 810 "found %u, expected %u", | |
| 811 es->curmacro->name, numargs, numparams); | |
| 812 complain_fail(); | |
| 813 while (numargs < numparams) { | |
| 814 stringarray_add(&es->args, dostrdup(""), NULL); | |
| 815 numargs++; | |
| 816 } | |
| 817 } | |
| 19 | 818 |
| 819 len = 0; | |
| 820 num = expansionitemarray_num(&es->curmacro->expansion); | |
| 821 for (i=0; i<num; i++) { | |
| 822 ei = expansionitemarray_get(&es->curmacro->expansion, i); | |
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823 switch (ei->itemtype) { |
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824 case EI_STRING: |
| 19 | 825 len += strlen(ei->string); |
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826 break; |
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827 case EI_PARAM: |
| 19 | 828 arg = stringarray_get(&es->args, ei->param); |
| 829 len += strlen(arg); | |
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830 break; |
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831 case EI_FILE: |
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832 len += strlen(place_getname(p)) + 2; |
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833 break; |
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834 case EI_LINE: |
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835 len += snprintf(numbuf, sizeof(numbuf), "%u", p->line); |
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836 break; |
| 19 | 837 } |
| 838 } | |
| 839 | |
| 840 ret = domalloc(len+1); | |
| 841 *ret = '\0'; | |
| 842 for (i=0; i<num; i++) { | |
| 843 ei = expansionitemarray_get(&es->curmacro->expansion, i); | |
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844 switch (ei->itemtype) { |
|
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845 case EI_STRING: |
| 19 | 846 strcat(ret, ei->string); |
|
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847 break; |
|
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848 case EI_PARAM: |
| 19 | 849 arg = stringarray_get(&es->args, ei->param); |
| 850 strcat(ret, arg); | |
|
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851 break; |
|
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852 case EI_FILE: |
|
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853 strcat(ret, "\""); |
|
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|
854 strcat(ret, place_getname(p)); |
|
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855 strcat(ret, "\""); |
|
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|
856 break; |
|
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|
857 case EI_LINE: |
|
159
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|
858 snprintf(numbuf, sizeof(numbuf), "%u", p->line); |
|
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|
859 strcat(ret, numbuf); |
|
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|
860 break; |
| 19 | 861 } |
| 862 } | |
| 863 | |
| 864 return ret; | |
| 865 } | |
| 866 | |
| 867 static | |
| 868 void | |
| 869 expand_domacro(struct expstate *es, struct place *p) | |
| 870 { | |
| 871 struct macro *m; | |
| 872 char *newbuf, *newbuf2; | |
| 873 | |
| 874 if (es->curmacro == NULL) { | |
| 875 /* defined() */ | |
| 876 if (stringarray_num(&es->args) != 1) { | |
| 877 complain(p, "Too many arguments for defined()"); | |
| 878 complain_fail(); | |
| 21 | 879 expand_send(es, p, "0", 1); |
| 19 | 880 return; |
| 881 } | |
| 882 m = macrotable_find(stringarray_get(&es->args, 0), false); | |
| 21 | 883 expand_send(es, p, (m != NULL) ? "1" : "0", 1); |
| 25 | 884 expstate_destroyargs(es); |
| 19 | 885 return; |
| 886 } | |
| 887 | |
| 888 assert(es->curmacro->inuse == false); | |
| 889 es->curmacro->inuse = true; | |
| 890 | |
| 28 | 891 newbuf = expand_substitute(p, es); |
| 19 | 892 newbuf2 = macroexpand(p, newbuf, strlen(newbuf), false); |
|
39
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|
893 dostrfree(newbuf); |
| 25 | 894 expstate_destroyargs(es); |
| 19 | 895 doexpand(es, p, newbuf2, strlen(newbuf2)); |
|
39
337110e7240a
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|
896 dostrfree(newbuf2); |
| 19 | 897 |
| 898 es->curmacro->inuse = false; | |
| 899 } | |
| 900 | |
|
87
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901 /* |
|
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902 * The traditional behavior if a function-like macro appears without |
|
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|
903 * arguments is to pretend it isn't a macro; that is, just emit its |
|
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|
904 * name. |
|
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|
905 */ |
|
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|
906 static |
|
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|
907 void |
|
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908 expand_missingargs(struct expstate *es, struct place *p, bool needspace) |
|
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909 { |
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910 if (es->curmacro == NULL) { |
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911 /* defined */ |
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912 expand_send(es, p, "defined", 7); |
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913 return; |
|
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914 } |
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915 expand_send(es, p, es->curmacro->name, strlen(es->curmacro->name)); |
|
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916 /* send a space in case we ate whitespace after the macro name */ |
|
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917 if (needspace) { |
|
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|
918 expand_send(es, p, " ", 1); |
|
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919 } |
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|
920 } |
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921 |
| 19 | 922 static |
| 923 void | |
|
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924 expand_got_ws(struct expstate *es, struct place *p, |
|
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925 const char *buf, size_t len) |
| 19 | 926 { |
| 927 switch (es->state) { | |
| 928 case ES_NORMAL: | |
| 21 | 929 expand_send(es, p, buf, len); |
| 19 | 930 break; |
| 931 case ES_WANTLPAREN: | |
| 152 | 932 /* XXX notyet */ |
| 933 //expand_send(es, p, buf, len); | |
| 19 | 934 break; |
| 935 case ES_NOARG: | |
|
118
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936 expand_newarg(es, buf, len); |
|
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937 es->state = ES_HAVEARG; |
| 19 | 938 break; |
| 939 case ES_HAVEARG: | |
| 940 expand_appendarg(es, buf, len); | |
| 941 break; | |
| 942 } | |
| 943 } | |
| 944 | |
| 945 static | |
| 946 void | |
|
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947 expand_got_word(struct expstate *es, struct place *p, |
|
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948 const char *buf, size_t len) |
| 19 | 949 { |
| 950 struct macro *m; | |
| 17 | 951 |
| 19 | 952 switch (es->state) { |
| 953 case ES_NORMAL: | |
| 954 if (es->honordefined && | |
| 955 len == 7 && !memcmp(buf, "defined", 7)) { | |
| 956 es->curmacro = NULL; | |
| 957 es->state = ES_WANTLPAREN; | |
| 958 break; | |
| 959 } | |
| 960 m = macrotable_findlen(buf, len, false); | |
|
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961 if (m == NULL || m->inuse) { |
| 21 | 962 expand_send(es, p, buf, len); |
| 19 | 963 } else if (!m->hasparams) { |
|
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964 es->curmacro = m; |
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965 expand_domacro(es, p); |
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966 es->curmacro = NULL; |
| 19 | 967 } else { |
| 968 es->curmacro = m; | |
| 969 es->state = ES_WANTLPAREN; | |
| 970 } | |
| 971 break; | |
| 972 case ES_WANTLPAREN: | |
| 973 if (es->curmacro != NULL) { | |
|
87
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974 expand_missingargs(es, p, true); |
|
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975 es->state = ES_NORMAL; |
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976 /* try again */ |
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977 expand_got_word(es, p, buf, len); |
| 19 | 978 } else { |
| 979 /* "defined foo" means "defined(foo)" */ | |
| 980 expand_newarg(es, buf, len); | |
| 981 es->state = ES_NORMAL; | |
| 982 expand_domacro(es, p); | |
| 983 } | |
| 984 break; | |
| 985 case ES_NOARG: | |
| 986 expand_newarg(es, buf, len); | |
| 987 es->state = ES_HAVEARG; | |
| 988 break; | |
| 989 case ES_HAVEARG: | |
| 990 expand_appendarg(es, buf, len); | |
| 991 break; | |
| 992 } | |
| 993 } | |
| 994 | |
| 995 static | |
| 996 void | |
|
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997 expand_got_lparen(struct expstate *es, struct place *p, |
|
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998 const char *buf, size_t len) |
| 19 | 999 { |
| 1000 switch (es->state) { | |
| 1001 case ES_NORMAL: | |
| 21 | 1002 expand_send(es, p, buf, len); |
| 19 | 1003 break; |
| 1004 case ES_WANTLPAREN: | |
| 1005 es->state = ES_NOARG; | |
| 1006 break; | |
| 1007 case ES_NOARG: | |
| 1008 expand_newarg(es, buf, len); | |
| 1009 es->state = ES_HAVEARG; | |
| 1010 es->argparens++; | |
| 1011 break; | |
| 1012 case ES_HAVEARG: | |
| 1013 expand_appendarg(es, buf, len); | |
| 1014 es->argparens++; | |
| 1015 break; | |
| 1016 } | |
| 1017 } | |
| 1018 | |
| 1019 static | |
| 1020 void | |
|
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1021 expand_got_rparen(struct expstate *es, struct place *p, |
|
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1022 const char *buf, size_t len) |
| 19 | 1023 { |
| 1024 switch (es->state) { | |
| 1025 case ES_NORMAL: | |
| 21 | 1026 expand_send(es, p, buf, len); |
| 19 | 1027 break; |
| 1028 case ES_WANTLPAREN: | |
|
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1029 expand_missingargs(es, p, false); |
|
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1030 es->state = ES_NORMAL; |
|
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1031 /* try again */ |
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|
1032 expand_got_rparen(es, p, buf, len); |
| 19 | 1033 break; |
| 1034 case ES_NOARG: | |
| 1035 assert(es->argparens == 0); | |
|
117
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1036 if (stringarray_num(&es->args) > 0) { |
|
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1037 /* we are after a comma; enter an empty argument */ |
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1038 expand_newarg(es, buf, 0); |
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1039 } |
| 19 | 1040 es->state = ES_NORMAL; |
| 1041 expand_domacro(es, p); | |
| 1042 break; | |
| 1043 case ES_HAVEARG: | |
| 1044 if (es->argparens > 0) { | |
| 1045 es->argparens--; | |
| 1046 expand_appendarg(es, buf, len); | |
| 1047 } else { | |
| 1048 es->state = ES_NORMAL; | |
| 1049 expand_domacro(es, p); | |
| 1050 } | |
| 1051 break; | |
| 1052 } | |
| 1053 } | |
| 1054 | |
| 1055 static | |
| 1056 void | |
|
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1057 expand_got_comma(struct expstate *es, struct place *p, |
|
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1058 const char *buf, size_t len) |
| 19 | 1059 { |
| 1060 switch (es->state) { | |
| 1061 case ES_NORMAL: | |
| 21 | 1062 expand_send(es, p, buf, len); |
| 19 | 1063 break; |
| 1064 case ES_WANTLPAREN: | |
|
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1065 expand_missingargs(es, p, false); |
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1066 es->state = ES_NORMAL; |
|
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1067 /* try again */ |
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1068 expand_got_comma(es, p, buf, len); |
| 19 | 1069 break; |
| 1070 case ES_NOARG: | |
| 1071 assert(es->argparens == 0); | |
| 1072 expand_newarg(es, buf, 0); | |
| 1073 break; | |
| 1074 case ES_HAVEARG: | |
| 1075 if (es->argparens > 0) { | |
| 1076 expand_appendarg(es, buf, len); | |
| 1077 } else { | |
| 1078 es->state = ES_NOARG; | |
| 1079 } | |
| 1080 break; | |
| 1081 } | |
| 1082 } | |
| 1083 | |
| 1084 static | |
| 1085 void | |
|
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1086 expand_got_other(struct expstate *es, struct place *p, |
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1087 const char *buf, size_t len) |
| 19 | 1088 { |
| 1089 switch (es->state) { | |
| 1090 case ES_NORMAL: | |
| 21 | 1091 expand_send(es, p, buf, len); |
| 19 | 1092 break; |
| 1093 case ES_WANTLPAREN: | |
|
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1094 expand_missingargs(es, p, false); |
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1095 es->state = ES_NORMAL; |
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1096 /* try again */ |
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1097 expand_got_other(es, p, buf, len); |
| 19 | 1098 break; |
| 1099 case ES_NOARG: | |
| 1100 expand_newarg(es, buf, len); | |
| 1101 es->state = ES_HAVEARG; | |
| 1102 break; | |
| 1103 case ES_HAVEARG: | |
| 1104 expand_appendarg(es, buf, len); | |
| 1105 break; | |
| 1106 } | |
| 1107 } | |
| 1108 | |
| 1109 static | |
| 1110 void | |
| 1111 expand_got_eof(struct expstate *es, struct place *p) | |
| 1112 { | |
| 1113 switch (es->state) { | |
| 1114 case ES_NORMAL: | |
| 1115 break; | |
| 1116 case ES_WANTLPAREN: | |
|
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1117 expand_missingargs(es, p, false); |
| 19 | 1118 break; |
| 1119 case ES_NOARG: | |
| 1120 case ES_HAVEARG: | |
| 1121 if (es->curmacro) { | |
| 1122 complain(p, "Unclosed argument list for macro %s", | |
| 1123 es->curmacro->name); | |
| 1124 } else { | |
| 1125 complain(p, "Unclosed argument list for defined()"); | |
| 1126 } | |
| 1127 complain_fail(); | |
| 1128 expstate_destroyargs(es); | |
| 1129 break; | |
| 1130 } | |
| 88 | 1131 expand_send_eof(es, p); |
| 19 | 1132 es->state = ES_NORMAL; |
| 1133 es->curmacro = NULL; | |
| 1134 es->argparens = 0; | |
| 1135 } | |
| 1136 | |
| 1137 static | |
| 1138 void | |
|
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1139 doexpand(struct expstate *es, struct place *p, const char *buf, size_t len) |
| 19 | 1140 { |
| 85 | 1141 char *s; |
| 19 | 1142 size_t x; |
| 85 | 1143 bool inquote = false; |
|
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1144 char quote = '\0'; |
| 19 | 1145 |
| 1146 while (len > 0) { | |
| 1147 x = strspn(buf, ws); | |
| 28 | 1148 if (x > len) { |
| 1149 /* XXX gross, need strnspn */ | |
| 1150 x = len; | |
| 1151 } | |
| 1152 | |
| 19 | 1153 if (x > 0) { |
| 1154 expand_got_ws(es, p, buf, x); | |
| 1155 buf += x; | |
| 1156 len -= x; | |
| 28 | 1157 continue; |
| 19 | 1158 } |
| 1159 | |
| 1160 x = strspn(buf, alnum); | |
| 28 | 1161 if (x > len) { |
| 1162 /* XXX gross, need strnspn */ | |
| 1163 x = len; | |
| 1164 } | |
| 1165 | |
| 145 | 1166 if (!inquote && x > 0) { |
| 19 | 1167 expand_got_word(es, p, buf, x); |
| 1168 buf += x; | |
| 1169 len -= x; | |
| 1170 continue; | |
| 1171 } | |
| 1172 | |
| 85 | 1173 if (!inquote && len > 1 && buf[0] == '/' && buf[1] == '*') { |
| 1174 s = strstr(buf, "*/"); | |
| 1175 if (s) { | |
| 1176 x = s - buf; | |
| 1177 } else { | |
| 1178 x = len; | |
| 1179 } | |
| 1180 expand_got_ws(es, p, buf, x); | |
| 1181 buf += x; | |
| 1182 len -= x; | |
| 1183 continue; | |
| 1184 } | |
| 1185 | |
|
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1186 if (!inquote && buf[0] == '(') { |
| 19 | 1187 expand_got_lparen(es, p, buf, 1); |
| 1188 buf++; | |
| 1189 len--; | |
| 1190 continue; | |
| 1191 } | |
| 1192 | |
|
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1193 if (!inquote && buf[0] == ')') { |
| 19 | 1194 expand_got_rparen(es, p, buf, 1); |
| 1195 buf++; | |
| 1196 len--; | |
| 1197 continue; | |
| 1198 } | |
| 1199 | |
|
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1200 if (!inquote && buf[0] == ',') { |
| 19 | 1201 expand_got_comma(es, p, buf, 1); |
| 1202 buf++; | |
| 1203 len--; | |
| 1204 continue; | |
| 1205 } | |
| 1206 | |
|
128
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1207 if (len > 1 && buf[0] == '\\' && |
|
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1208 (buf[1] == '"' || buf[1] == '\'')) { |
| 85 | 1209 expand_got_other(es, p, buf, 2); |
| 1210 buf += 2; | |
| 1211 len -= 2; | |
| 1212 continue; | |
| 1213 } | |
|
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1214 if (!inquote && (buf[0] == '"' || buf[0] == '\'')) { |
|
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1215 inquote = true; |
|
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1216 quote = buf[0]; |
|
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1217 } else if (inquote && buf[0] == quote) { |
|
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1218 inquote = false; |
| 85 | 1219 } |
| 1220 | |
| 19 | 1221 expand_got_other(es, p, buf, 1); |
| 1222 buf++; | |
| 1223 len--; | |
| 1224 } | |
| 1225 } | |
| 1226 | |
| 1227 char * | |
|
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|
1228 macroexpand(struct place *p, const char *buf, size_t len, bool honordefined) |
| 19 | 1229 { |
| 1230 struct expstate es; | |
| 1231 char *ret; | |
| 1232 | |
| 1233 expstate_init(&es, true, honordefined); | |
| 1234 doexpand(&es, p, buf, len); | |
| 1235 expand_got_eof(&es, p); | |
| 40 | 1236 |
| 1237 /* trim to fit, so the malloc debugging won't complain */ | |
| 1238 es.buf = dorealloc(es.buf, es.bufmax, strlen(es.buf) + 1); | |
| 1239 | |
| 19 | 1240 ret = es.buf; |
| 1241 es.buf = NULL; | |
|
39
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diff
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|
1242 es.bufpos = es.bufmax = 0; |
| 40 | 1243 |
| 19 | 1244 expstate_cleanup(&es); |
| 1245 | |
| 1246 return ret; | |
| 1247 } | |
| 1248 | |
| 1249 void | |
|
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1250 macro_sendline(struct place *p, const char *buf, size_t len) |
| 19 | 1251 { |
| 1252 doexpand(&mainstate, p, buf, len); | |
|
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|
1253 switch (mainstate.state) { |
|
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1254 case ES_NORMAL: |
| 175 | 1255 /* |
| 1256 * If we were sent a blank line, don't emit a newline | |
| 1257 * for it. This matches the prior behavior of tradcpp. | |
| 1258 */ | |
| 1259 if (len > 0) { | |
| 1260 output(p, "\n", 1); | |
| 1261 } | |
|
162
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1262 break; |
|
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|
1263 case ES_WANTLPAREN: |
|
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1264 case ES_NOARG: |
|
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|
1265 case ES_HAVEARG: |
| 175 | 1266 /* |
| 1267 * Apparently to match gcc's -traditional behavior we | |
| 1268 * need to emit a space for each newline that appears | |
| 1269 * while processing macro args. | |
| 1270 */ | |
|
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1271 expand_got_ws(&mainstate, p, " ", 1); |
|
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|
1272 break; |
|
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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 } |