src/lexer.l

   1 /* GOB C Preprocessor
   2  * Copyright (C) 1999 the Free Software Foundation.
   3  *
   4  * Author: George Lebl
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the  Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19  * USA.
  20  */
  21 %{
  22
  23 #include "config.h"
  24 #include <glib.h>
  25 #include <string.h>
  26 #include <ctype.h>
  27
  28 #include "treefuncs.h"
  29 #include "parse.h"
  30 #include "main.h"
  31 #include "util.h"
  32
  33 static int parenth_depth = 0;
  34 static int before_comment = INITIAL;
  35 static gboolean class_after_c = FALSE;
  36 static int code_type = CCODE;
  37 static int before_string;
  38 static int property_paren_depth = 0;
  39
  40 /* GTK+ doc stuff */
  41 static char *gtk_doc_func = NULL; /* current gtk-doc func */
  42 GHashTable *gtk_doc_hash = NULL;
  43
  44 static GString *cbuf = NULL;
  45 int ccode_line = 1;
  46
  47 GList *include_files = NULL;
  48 /* 0 no, 1 means yes, 2+ means don't even start looking anymore */
  49 static int look_for_includes = 0;
  50
  51 int line_no = 1;
  52 /* last filename parsed from a #line directive */
  53 char *hline_filename = NULL;
  54
  55 static void
  56 clear_cbuf(void)
  57 {
  58         if(!cbuf) {
  59                 cbuf = g_string_new(NULL);
  60         } else {
  61                 cbuf = g_string_assign(cbuf, "");
  62         }
  63 }
  64
  65 static void
  66 add_to_cbuf(char *s)
  67 {
  68         if(!cbuf) {
  69                 cbuf = g_string_new(s);
  70         } else {
  71                 cbuf = g_string_append(cbuf,s);
  72         }
  73 }
  74
  75 static void
  76 add_gtk_doc_func(void)
  77 {
  78         if(!gtk_doc_func)
  79                 return;
  80
  81         if(!gtk_doc_hash)
  82                 gtk_doc_hash = g_hash_table_new(g_str_hash, g_str_equal);
  83         g_hash_table_insert(gtk_doc_hash, gtk_doc_func, g_strdup(cbuf->str));
  84         clear_cbuf();
  85
  86         gtk_doc_func = NULL;
  87 }
  88
  89 /* Ugly warning avoiding */
  90 #ifdef FLEX_SCANNER
  91 int yylex(void);
  92 #endif
  93
  94 %}
  95
  96 %x COMMENT
  97 %x C_CODE
  98 %x CODE_STRING
  99 %x CLASS_CODE
 100 %x CLASS_CODE_I
 101 %x PROPERTY_CODE
 102 %x PROPERTY_CODE_I
 103 %x GTK_DOC_BEFORE_NAME
 104 %x GTK_DOC
 105 %x GTK_DOC_LINE
 106
 107
 108
 109 %%
 110
 111 %{
 112 /* Avoid warning from flex, cuz flex sucks */
 113 #ifdef FLEX_SCANNER
 114 yy_current_state = 0;
 115 #endif
 116 %}
 117
 118
 119 <*>\n                   { line_no++; REJECT; }
 120
 121 <COMMENT>^(I(S.RI).E\(([1-9][0-9]+|[2-9]))/(\)) {
 122 /* Thy evil easter egg */
 123 #define QQ(x) long x
 124 #define KK(x) =atoi(__(&,,x,))
 125 #define MM(x,a) {QQ(i);for(i=2;i<x;i++){a}}
 126 #define PP(Q) (P%Q)==0
 127 #define ___(x,y,z) if(x z y)
 128 #define __(a,x,y,z) a(yytext[y] x z)
 129 #define O__O(a,b) fprintf(stderr,"%s is %s!\n",a,b)
 130 QQ(m)=1;___(__(,==,2,'P'),__(,==,5,'M'),&&
 131 ){QQ(P)KK(8);MM(P,___(PP(i),,)m=0;)}__(,=,
 132 7,0);___(,,m){O__O(__( &,,8,),__(&,,2,));}
 133 #undef QQ
 134 #undef KK
 135 #undef MM
 136 #undef PP
 137 #undef ___
 138 #undef __
 139 #undef O__O
 140 REJECT;
 141 }
 142
 143 \/\/.*$                 { ; /*comment, ignore*/ }
 144
 145 <*>^#[ \t]*line[ \t]+[0-9]+([ \t]\"[^\n\r\f\"]*\")? {
 146         char *p;
 147         char *number;
 148         char *filename;
 149         char *str=g_strdup(yytext);
 150
 151         /* find first digit of line number */
 152         p=str;
 153         while(*p&&!isdigit(*p)) p++;
 154         number=p;
 155
 156         /* find end of line number */
 157         while(*p&&isdigit(*p)) p++;
 158         if(*p) *p++=0;
 159
 160         /* find beginning of filename */
 161         p=strchr(p,'"');
 162         if(p) p++;
 163         filename=p;
 164
 165         /* find end of filename */
 166         if(p) p=strchr(p,'"');
 167         if(p) *p=0;
 168
 169         /* stash number (minus one because we don't count this line) */
 170         if(number) line_no=atoi(number)-1;
 171
 172         /* stash filename */
 173         if(filename) {
 174                 if(hline_filename) g_free(hline_filename);
 175                 hline_filename=g_strdup(filename);
 176         }
 177
 178         /* clean up */
 179         g_free(str);
 180 }
 181
 182 <C_CODE>^#[ \t]*include[ \t][<"][^\n">]*[>"] {
 183         if(look_for_includes==1) {
 184                 char *p;
 185                 char *file;
 186                 char *str = g_strdup(yytext);
 187                 file = strchr(str,'"');
 188                 if(!file) file = strchr(str,'<');
 189                 file++;
 190                 p = strchr(file,'"');
 191                 if(!p) p = strchr(file,'>');
 192                 *p = '\0';
 193                 include_files = g_list_prepend(include_files,g_strdup(file));
 194                 g_free(str);
 195         }
 196         REJECT;
 197 }
 198
 199 <CLASS_CODE_I>\/\*\*[ \t]*$     {
 200                         /* eat out gtk doc stuff */
 201                         BEGIN(GTK_DOC_BEFORE_NAME);
 202                         clear_cbuf();
 203                 }
 204 <GTK_DOC_BEFORE_NAME>^[ \t]*\*[ \t]*$   {
 205                         /* empty doc lines */
 206                         ;
 207                 }
 208 <GTK_DOC_BEFORE_NAME>^[ \t]*\*\ [_a-zA-Z][_a-zA-Z0-9]*:?[ \t]*$ {
 209                         char *p;
 210                         BEGIN(GTK_DOC);
 211                         p = strchr(yytext, '*');
 212                         g_free(gtk_doc_func);
 213                         gtk_doc_func = g_strdup(p+2);
 214                         p = strchr(gtk_doc_func, ':');
 215                         if(p) *p='\0';
 216                         g_strstrip(gtk_doc_func);
 217                 }
 218 <GTK_DOC_BEFORE_NAME>\*\/       {
 219                         BEGIN(CLASS_CODE_I);
 220                 }
 221 <GTK_DOC_BEFORE_NAME>.  {
 222                         BEGIN(COMMENT);
 223                         before_comment = CLASS_CODE_I;
 224                 }
 225 <GTK_DOC>^[ \t]*\*[ \t]*$       {
 226                         /* empty doc lines */
 227                         add_to_cbuf(" *\n");
 228                 }
 229 <GTK_DOC>^[ \t]*\*?\*\/ {
 230                         BEGIN(CLASS_CODE_I);
 231                         add_gtk_doc_func();
 232                 }
 233 <GTK_DOC>^[ \t]*\*\     {
 234                         fflush(stdout);
 235                         add_to_cbuf(" * ");
 236                         BEGIN(GTK_DOC_LINE);
 237                 }
 238 <GTK_DOC>\*\/   {
 239                         BEGIN(CLASS_CODE_I);
 240                 }
 241 <GTK_DOC>.      {
 242                         BEGIN(COMMENT);
 243                         before_comment = CLASS_CODE_I;
 244                 }
 245 <GTK_DOC_LINE>\*\/      {
 246                         BEGIN(CLASS_CODE_I);
 247                         add_to_cbuf("\n");
 248                         add_gtk_doc_func();
 249                 }
 250 <GTK_DOC_LINE>.$        {
 251                         BEGIN(GTK_DOC);
 252                         add_to_cbuf(yytext);
 253                         add_to_cbuf("\n");
 254                 }
 255 <GTK_DOC_LINE>. {
 256                         fflush(stdout);
 257                         add_to_cbuf(yytext);
 258                 }
 259
 260 <C_CODE>\/\/.*$         { add_to_cbuf(yytext); /*comment, ignore*/ }
 261 <CLASS_CODE>\/\/.*$     { ; /*comment, ignore*/ }
 262 <CLASS_CODE_I>\/\/.*$   { ; /*comment, ignore*/ }
 263 <PROPERTY_CODE_I>\/\/.*$        { ; /*comment, ignore*/ }
 264 \/\*            {BEGIN(COMMENT); before_comment = INITIAL; }
 265 <C_CODE>\/\*    {
 266         add_to_cbuf(yytext);
 267         BEGIN(COMMENT);
 268         before_comment = C_CODE;
 269 }
 270 <CLASS_CODE>\/\*        {BEGIN(COMMENT); before_comment = CLASS_CODE; }
 271 <CLASS_CODE_I>\/\*      {BEGIN(COMMENT); before_comment = CLASS_CODE_I; }
 272 <PROPERTY_CODE_I>\/\*   {BEGIN(COMMENT); before_comment = PROPERTY_CODE_I; }
 273 <COMMENT>\*\/   {
 274         if(before_comment == C_CODE) add_to_cbuf(yytext);
 275         BEGIN(before_comment);
 276                 }
 277 <COMMENT>.      {
 278         /* comment, ignore */
 279         if(before_comment == C_CODE) add_to_cbuf(yytext);
 280                 }
 281 <COMMENT>\n     {
 282         /* comment, ignore */
 283         if(before_comment == C_CODE) add_to_cbuf(yytext);
 284                 }
 285
 286 ^\%(a|all)\{            {
 287                         BEGIN(C_CODE);
 288                         parenth_depth = 1;
 289                         class_after_c = FALSE;
 290                         code_type = ACODE;
 291                         clear_cbuf();
 292                         ccode_line = line_no;
 293                 }
 294 ^\%(at|alltop)\{                {
 295                         BEGIN(C_CODE);
 296                         parenth_depth = 1;
 297                         class_after_c = FALSE;
 298                         code_type = ATCODE;
 299                         clear_cbuf();
 300                         ccode_line = line_no;
 301                 }
 302
 303 ^\%(ht|headertop)\{             {
 304                         BEGIN(C_CODE);
 305                         parenth_depth = 1;
 306                         class_after_c = FALSE;
 307                         code_type = HTCODE;
 308                         clear_cbuf();
 309                         ccode_line = line_no;
 310                 }
 311 ^\%(ph|privateheader)\{         {
 312                         BEGIN(C_CODE);
 313                         parenth_depth = 1;
 314                         class_after_c = FALSE;
 315                         code_type = PHCODE;
 316                         clear_cbuf();
 317                         ccode_line = line_no;
 318                 }
 319 ^\%(h|header)\{         {
 320                         BEGIN(C_CODE);
 321                         parenth_depth = 1;
 322                         class_after_c = FALSE;
 323                         code_type = HCODE;
 324                         clear_cbuf();
 325                         ccode_line = line_no;
 326                 }
 327 ^\%\{           {
 328                         BEGIN(C_CODE);
 329                         parenth_depth = 1;
 330                         class_after_c = FALSE;
 331                         code_type = CCODE;
 332                         clear_cbuf();
 333                         ccode_line = line_no;
 334                         if(look_for_includes==0)
 335                                 look_for_includes=1;
 336                 }
 337 <C_CODE>^\%\}   {
 338                         BEGIN(INITIAL);
 339                         yylval.cbuf = cbuf;
 340                         cbuf = NULL;
 341                         if(look_for_includes==1)
 342                                 look_for_includes=0;
 343                         return code_type;
 344                 }
 345
 346 <C_CODE>\'\{\'          { add_to_cbuf(yytext); }
 347 <C_CODE>\'\\\{\'        { add_to_cbuf(yytext); }
 348 <C_CODE>\'\}\'          { add_to_cbuf(yytext); }
 349 <C_CODE>\'\\\}\'        { add_to_cbuf(yytext); }
 350 <C_CODE>\'\"\'          { add_to_cbuf(yytext); }
 351 <C_CODE>\'\\\"\'        { add_to_cbuf(yytext); }
 352
 353 <C_CODE>\\.     { add_to_cbuf(yytext); }
 354
 355
 356 <C_CODE>\"      {
 357                         BEGIN(CODE_STRING);
 358                         before_string = C_CODE;
 359                         add_to_cbuf(yytext);
 360                 }
 361 <PROPERTY_CODE_I>\"     {
 362                         BEGIN(CODE_STRING);
 363                         before_string = PROPERTY_CODE_I;
 364                         add_to_cbuf(yytext);
 365                 }
 366 <CODE_STRING>\\.        { add_to_cbuf(yytext); }
 367 <CODE_STRING>\" {
 368                         BEGIN(before_string);
 369                         add_to_cbuf(yytext);
 370                         if (before_string == PROPERTY_CODE_I) {
 371                                 yylval.id = cbuf->str;
 372                                 g_string_free (cbuf, FALSE);
 373                                 cbuf = NULL;
 374                                 return STRING;
 375                         }
 376                 }
 377 <CODE_STRING>.  { add_to_cbuf(yytext); }
 378 <CODE_STRING>\n { add_to_cbuf(yytext); }
 379
 380 <C_CODE>\{      {
 381                         parenth_depth++;
 382                         add_to_cbuf(yytext);
 383                 }
 384 <C_CODE>\}      {
 385                         parenth_depth--;
 386                         if(parenth_depth<0) {
 387                                 REJECT;
 388                         } else if(parenth_depth==0 && class_after_c) {
 389                                 BEGIN(CLASS_CODE_I);
 390                                 yylval.cbuf = cbuf;
 391                                 cbuf = NULL;
 392                                 return CCODE;
 393                         }
 394                         add_to_cbuf(yytext);
 395                 }
 396
 397 <C_CODE>.       { add_to_cbuf(yytext); }
 398 <C_CODE>\n      { add_to_cbuf(yytext); }
 399
 400 class           {
 401                         static int found_classes = 0;
 402                         look_for_includes = 2;
 403                         BEGIN(CLASS_CODE);
 404
 405                         if(++found_classes > 1) {
 406                                 error_print(GOB_ERROR, line_no,
 407                                             "Only one class per file allowed");
 408                         }
 409
 410                         return CLASS;
 411                 }
 412
 413 error           { return ERROR; }
 414 enum            { return ENUM; }
 415 flags           { return FLAGS; }
 416
 417 ^[ \t]*requires[ \t]+[0-9]+\.[0-9]+\.[0-9]+[\t ]*$      {
 418                         int maj = 0, min = 0, pl = 0;
 419                         int rmaj = 0, rmin = 0, rpl = 0;
 420                         int effective_maj = 0;
 421                         int effective_rmaj = 0;
 422                         char *p;
 423
 424                         sscanf (VERSION, "%d.%d.%d", &rmaj, &rmin, &rpl);
 425                         effective_rmaj = rmaj;
 426                         if (rmin >= 90)
 427                                 effective_rmaj = rmaj + 1;
 428
 429                         p = strchr (yytext,'r');
 430                         g_assert (p); /* we MUST have found it */
 431                         sscanf (p, "requires %d.%d.%d", &maj, &min, &pl);
 432                         effective_maj = maj;
 433                         if (min >= 90)
 434                                 effective_maj = maj + 1;
 435
 436                         if(rmaj < maj ||
 437                            (rmaj == maj && rmin < min) ||
 438                            (rmaj == maj && rmin == min && rpl < pl)) {
 439                                 error_printf (GOB_ERROR, line_no,
 440                                               "GOB version at least %d.%d.%d required "
 441                                               "(this is %s)\n"
 442                                               "To upgrade your gob, see: "
 443                                               "http://www.5z.com/jirka/gob.html",
 444                                               maj, min, pl, VERSION);
 445                         }
 446
 447                         if(effective_rmaj != effective_maj) {
 448                                 error_printf(GOB_ERROR, line_no,
 449                                              "GOB major version %d required "
 450                                              "(this is %s)\n"
 451                                              "To upgrade your gob, see: "
 452                                              "http://www.5z.com/jirka/gob.html",
 453                                              effective_maj, VERSION);
 454                         }
 455
 456                 }
 457
 458 <CLASS_CODE,CLASS_CODE_I>class|this     {
 459                         if(for_cpp) {
 460                                 error_printf(GOB_WARN, line_no,
 461                                              "'%s' keyword should not "
 462                                              "be used when generating "
 463                                              "C++ code", yytext);
 464                         }
 465                         REJECT;
 466                 }
 467
 468 <CLASS_CODE>from        {return FROM;}
 469
 470 <CLASS_CODE_I,PROPERTY_CODE_I>void      {return VOID;}
 471 <CLASS_CODE_I,PROPERTY_CODE_I>struct    {return STRUCT;}
 472 <CLASS_CODE_I,PROPERTY_CODE_I>union     {return UNION;}
 473 <CLASS_CODE_I,PROPERTY_CODE_I>enum      {return ENUM;}
 474 <CLASS_CODE_I,PROPERTY_CODE_I>signed    {return SIGNED;}
 475 <CLASS_CODE_I,PROPERTY_CODE_I>unsigned  {return UNSIGNED;}
 476 <CLASS_CODE_I,PROPERTY_CODE_I>long      {return LONG;}
 477 <CLASS_CODE_I,PROPERTY_CODE_I>short     {return SHORT;}
 478 <CLASS_CODE_I,PROPERTY_CODE_I>int       {return INT;}
 479 <CLASS_CODE_I,PROPERTY_CODE_I>float     {return FLOAT;}
 480 <CLASS_CODE_I,PROPERTY_CODE_I>double    {return DOUBLE;}
 481 <CLASS_CODE_I,PROPERTY_CODE_I>char      {return CHAR;}
 482 <CLASS_CODE_I,PROPERTY_CODE_I>const     {return CONST;}
 483
 484 <CLASS_CODE_I>\.\.\.    {return THREEDOTS;}
 485
 486 <CLASS_CODE_I>public    {yylval.line = line_no; return PUBLIC;}
 487 <CLASS_CODE_I>private   {yylval.line = line_no; return PRIVATE;}
 488 <CLASS_CODE_I>protected {yylval.line = line_no; return PROTECTED;}
 489 <CLASS_CODE_I>classwide {yylval.line = line_no; return CLASSWIDE;}
 490 <CLASS_CODE_I>argument  {yylval.line = line_no; return ARGUMENT;}
 491 <CLASS_CODE_I>virtual   {yylval.line = line_no; return VIRTUAL;}
 492 <CLASS_CODE_I>signal    {yylval.line = line_no; return SIGNAL;}
 493 <CLASS_CODE_I>override  {yylval.line = line_no; return OVERRIDE;}
 494 <CLASS_CODE_I>property  {
 495                                 yylval.line = line_no;
 496                                 BEGIN(PROPERTY_CODE);
 497                                 return PROPERTY;
 498                         }
 499 <PROPERTY_CODE_I>nick   { yylval.line = line_no; return NICK; }
 500 <PROPERTY_CODE_I>blurb  { yylval.line = line_no; return BLURB; }
 501 <PROPERTY_CODE_I>maximum        { yylval.line = line_no; return MAXIMUM; }
 502 <PROPERTY_CODE_I>minimum        { yylval.line = line_no; return MINIMUM; }
 503 <PROPERTY_CODE_I>default_value  { yylval.line = line_no; return DEFAULT_VALUE; }
 504 <PROPERTY_CODE_I>flags  { yylval.line = line_no; return FLAGS; }
 505 <PROPERTY_CODE_I>type   { yylval.line = line_no; return TYPE; }
 506 <PROPERTY_CODE_I>flags_type     { yylval.line = line_no; return FLAGS_TYPE; }
 507 <PROPERTY_CODE_I>enum_type      { yylval.line = line_no; return ENUM_TYPE; }
 508 <PROPERTY_CODE_I>param_type     { yylval.line = line_no; return PARAM_TYPE; }
 509 <PROPERTY_CODE_I>boxed_type     { yylval.line = line_no; return BOXED_TYPE; }
 510 <PROPERTY_CODE_I>object_type    { yylval.line = line_no; return OBJECT_TYPE; }
 511 <PROPERTY_CODE>[(]      {
 512                 yylval.line = line_no;
 513                 property_paren_depth = 1;
 514                 BEGIN(PROPERTY_CODE_I);
 515                 return '(';
 516                         }
 517 <PROPERTY_CODE_I>[(]    {
 518                 yylval.line = line_no;
 519                 property_paren_depth++;
 520                 return '(';
 521                         }
 522 <PROPERTY_CODE_I>[)]    {
 523                 yylval.line = line_no;
 524                 property_paren_depth--;
 525                 if (property_paren_depth == 0) {
 526                         BEGIN(CLASS_CODE_I);
 527                 }
 528                 return ')';
 529                         }
 530
 531 <CLASS_CODE,CLASS_CODE_I,PROPERTY_CODE,PROPERTY_CODE_I,INITIAL>0|[1-9][0-9]*|0x[0-9a-fA-F]+|0[0-7]+|[0-9]*\.[0-9]+|\.[0-9][0-9]*        {
 532                         yylval.id = g_strdup(yytext);
 533                         return NUMBER;
 534                 }
 535 <CLASS_CODE,CLASS_CODE_I,PROPERTY_CODE,PROPERTY_CODE_I,INITIAL>[A-Za-z_][A-Za-z0-9_]*(:[A-Za-z0-9_]*)+  {
 536                         /* this one is for a classname with a namespace */
 537                         yylval.id = g_strdup(yytext);
 538                         return TYPETOKEN;
 539                 }
 540 <CLASS_CODE,CLASS_CODE_I,PROPERTY_CODE,PROPERTY_CODE_I,INITIAL>:[A-Za-z_][A-Za-z0-9_]*(:[A-Za-z0-9_]*)* {
 541                         /* this is for a classname with an empty namespace */
 542                         yylval.id = g_strdup(yytext);
 543                         return TYPETOKEN;
 544                 }
 545 <CLASS_CODE,CLASS_CODE_I,PROPERTY_CODE,PROPERTY_CODE_I,INITIAL>[A-Za-z_][A-Za-z0-9_]*   {
 546                         yylval.id = g_strdup(yytext);
 547                         return TOKEN;
 548                 }
 549 <CLASS_CODE,CLASS_CODE_I,PROPERTY_CODE,PROPERTY_CODE_I,INITIAL>\'\\.\'|\'.\'    {
 550                         yylval.id = g_strdup(yytext);
 551                         return SINGLE_CHAR;
 552                 }
 553
 554 <CLASS_CODE_I>(\[[0-9]*\]|\[[A-Za-z_][A-Za-z0-9_]*\])+  {
 555                         yylval.id = g_strdup(yytext);
 556                         return ARRAY_DIM;
 557                 }
 558
 559 <CLASS_CODE>\{  {
 560                         BEGIN(CLASS_CODE_I);
 561                         return '{';
 562                 }
 563 <CLASS_CODE_I>\{        {
 564                         BEGIN(C_CODE);
 565                         parenth_depth=1;
 566                         class_after_c = TRUE;
 567                         yylval.line = line_no;
 568                         clear_cbuf();
 569                         ccode_line = line_no;
 570                         return '{';
 571                 }
 572 <CLASS_CODE_I>\}        {
 573                                 BEGIN(INITIAL);
 574                                 return '}';
 575                         }
 576
 577 <CLASS_CODE,CLASS_CODE_I,INITIAL,PROPERTY_CODE,PROPERTY_CODE_I>[\f\t ]  ;  /*ignore*/
 578
 579 <*>.            {
 580                         yylval.line = line_no;
 581                         return yytext[0];
 582                 }
 583
 584 <*>[\n\r]       ;  /*ignore*/
 585
 586 %%
 587
 588 /* Ugly warning avoiding */
 589 #ifdef FLEX_SCANNER
 590 static void warning_avoider(void) G_GNUC_UNUSED;
 591 static void warning_avoider(void) {
 592         yy_flex_realloc(NULL, 0);
 593         yyunput(0, NULL);
 594         warning_avoider();
 595 }
 596 #endif
 597