tools/widl/parser.l

   1 /* -*-C-*-
   2  * IDL Compiler
   3  *
   4  * Copyright 2002 Ove Kaaven
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 %option stack
  22 %option noinput nounput noyy_top_state
  23 %option 8bit never-interactive prefix="parser_"
  24
  25 nl      \r?\n
  26 ws      [ \f\t\r]
  27 cident  [a-zA-Z_][0-9a-zA-Z_]*
  28 u_suffix        (u|U)
  29 l_suffix        (l|L)
  30 int     [0-9]+({l_suffix}?{u_suffix}?|{u_suffix}?{l_suffix}?)?
  31 hexd    [0-9a-fA-F]
  32 hex     0(x|X){hexd}+({l_suffix}?{u_suffix}?|{u_suffix}?{l_suffix}?)?
  33 uuid    {hexd}{8}-{hexd}{4}-{hexd}{4}-{hexd}{4}-{hexd}{12}
  34 double  [0-9]+\.[0-9]+([eE][+-]?[0-9]+)*
  35
  36 %x QUOTE
  37 %x WSTRQUOTE
  38 %x ATTR
  39 %x PP_LINE
  40 %x PP_PRAGMA
  41 %x SQUOTE
  42
  43 %{
  44
  45 #include "config.h"
  46 #include "wine/port.h"
  47
  48 #include <stdio.h>
  49 #include <stdlib.h>
  50 #include <string.h>
  51 #include <ctype.h>
  52 #include <assert.h>
  53 #include <errno.h>
  54 #include <limits.h>
  55
  56 #ifdef HAVE_UNISTD_H
  57 #include <unistd.h>
  58 #else
  59 #define YY_NO_UNISTD_H
  60 #endif
  61
  62 #include "widl.h"
  63 #include "utils.h"
  64 #include "parser.h"
  65 #include "wine/wpp.h"
  66
  67 #include "parser.tab.h"
  68
  69 static void addcchar(char c);
  70 static char *get_buffered_cstring(void);
  71
  72 static char *cbuffer;
  73 static int cbufidx;
  74 static int cbufalloc = 0;
  75
  76 static int kw_token(const char *kw);
  77 static int attr_token(const char *kw);
  78
  79 static warning_list_t *disabled_warnings = NULL;
  80
  81 #define MAX_IMPORT_DEPTH 10
  82 struct {
  83   YY_BUFFER_STATE state;
  84   char *input_name;
  85   int   line_number;
  86   char *temp_name;
  87 } import_stack[MAX_IMPORT_DEPTH];
  88 int import_stack_ptr = 0;
  89
  90 /* converts an integer in string form to an unsigned long and prints an error
  91  * on overflow */
  92 static unsigned int xstrtoul(const char *nptr, char **endptr, int base)
  93 {
  94     unsigned long val;
  95
  96     errno = 0;
  97     val = strtoul(nptr, endptr, base);
  98     if ((val == ULONG_MAX && errno == ERANGE) || ((unsigned int)val != val))
  99         error_loc("integer constant %s is too large\n", nptr);
 100     return val;
 101 }
 102
 103 UUID *parse_uuid(const char *u)
 104 {
 105   UUID* uuid = xmalloc(sizeof(UUID));
 106   char b[3];
 107   /* it would be nice to use UuidFromStringA */
 108   uuid->Data1 = strtoul(u, NULL, 16);
 109   uuid->Data2 = strtoul(u+9, NULL, 16);
 110   uuid->Data3 = strtoul(u+14, NULL, 16);
 111   b[2] = 0;
 112   memcpy(b, u+19, 2); uuid->Data4[0] = strtoul(b, NULL, 16);
 113   memcpy(b, u+21, 2); uuid->Data4[1] = strtoul(b, NULL, 16);
 114   memcpy(b, u+24, 2); uuid->Data4[2] = strtoul(b, NULL, 16);
 115   memcpy(b, u+26, 2); uuid->Data4[3] = strtoul(b, NULL, 16);
 116   memcpy(b, u+28, 2); uuid->Data4[4] = strtoul(b, NULL, 16);
 117   memcpy(b, u+30, 2); uuid->Data4[5] = strtoul(b, NULL, 16);
 118   memcpy(b, u+32, 2); uuid->Data4[6] = strtoul(b, NULL, 16);
 119   memcpy(b, u+34, 2); uuid->Data4[7] = strtoul(b, NULL, 16);
 120   return uuid;
 121 }
 122
 123 %}
 124
 125 /*
 126  **************************************************************************
 127  * The flexer starts here
 128  **************************************************************************
 129  */
 130 %%
 131 <INITIAL>^{ws}*\#{ws}*pragma{ws}+ yy_push_state(PP_PRAGMA);
 132 <INITIAL,ATTR>^{ws}*\#{ws}*     yy_push_state(PP_LINE);
 133 <PP_LINE>[^\n]*         {
 134                             int lineno;
 135                             char *cptr, *fname;
 136                             yy_pop_state();
 137                             lineno = (int)strtol(yytext, &cptr, 10);
 138                             if(!lineno)
 139                                 error_loc("Malformed '#...' line-directive; invalid linenumber\n");
 140                             fname = strchr(cptr, '"');
 141                             if(!fname)
 142                                 error_loc("Malformed '#...' line-directive; missing filename\n");
 143                             fname++;
 144                             cptr = strchr(fname, '"');
 145                             if(!cptr)
 146                                 error_loc("Malformed '#...' line-directive; missing terminating \"\n");
 147                             *cptr = '\0';
 148                             line_number = lineno - 1;  /* We didn't read the newline */
 149                             input_name = xstrdup(fname);
 150                         }
 151 <PP_PRAGMA>midl_echo[^\n]*  yyless(9); yy_pop_state(); return tCPPQUOTE;
 152 <PP_PRAGMA>winrt[^\n]*  {
 153                             if(import_stack_ptr) {
 154                                 if(!winrt_mode)
 155                                     error_loc("winrt IDL file imported in non-winrt mode\n");
 156                             }else {
 157                                 const char *ptr = yytext+5;
 158
 159                                 winrt_mode = TRUE;
 160
 161                                 while(isspace(*ptr))
 162                                     ptr++;
 163                                 if(!strncmp(ptr, "ns_prefix", 9) && (!*(ptr += 9) || isspace(*ptr)))
 164                                     use_abi_namespace = TRUE;
 165                             }
 166                             yy_pop_state();
 167                         }
 168 <PP_PRAGMA>[^\n]*       parser_lval.str = xstrdup(yytext); yy_pop_state(); return aPRAGMA;
 169 <INITIAL>^{ws}*midl_pragma{ws}+warning return tPRAGMA_WARNING;
 170 <INITIAL,ATTR>\"        yy_push_state(QUOTE); cbufidx = 0;
 171 <QUOTE>\"               {
 172                                 yy_pop_state();
 173                                 parser_lval.str = get_buffered_cstring();
 174                                 return aSTRING;
 175                         }
 176 <INITIAL,ATTR>L\"       yy_push_state(WSTRQUOTE); cbufidx = 0;
 177 <WSTRQUOTE>\"           {
 178                                 yy_pop_state();
 179                                 parser_lval.str = get_buffered_cstring();
 180                                 return aWSTRING;
 181                         }
 182 <INITIAL,ATTR>\'        yy_push_state(SQUOTE); cbufidx = 0;
 183 <SQUOTE>\'              {
 184                                 yy_pop_state();
 185                                 parser_lval.str = get_buffered_cstring();
 186                                 return aSQSTRING;
 187                         }
 188 <QUOTE,WSTRQUOTE,SQUOTE>\\\\    |
 189 <QUOTE,WSTRQUOTE>\\\"   addcchar(yytext[1]);
 190 <SQUOTE>\\\'    addcchar(yytext[1]);
 191 <QUOTE,WSTRQUOTE,SQUOTE>\\.     addcchar('\\'); addcchar(yytext[1]);
 192 <QUOTE,WSTRQUOTE,SQUOTE>.       addcchar(yytext[0]);
 193 <INITIAL,ATTR>\[        yy_push_state(ATTR); return '[';
 194 <ATTR>\]                yy_pop_state(); return ']';
 195 <ATTR>{cident}          return attr_token(yytext);
 196 <ATTR>{uuid}                    {
 197                                 parser_lval.uuid = parse_uuid(yytext);
 198                                 return aUUID;
 199                         }
 200 <INITIAL,ATTR>{hex}     {
 201                                 parser_lval.num = xstrtoul(yytext, NULL, 0);
 202                                 return aHEXNUM;
 203                         }
 204 <INITIAL,ATTR>{int}     {
 205                                 parser_lval.num = xstrtoul(yytext, NULL, 0);
 206                                 return aNUM;
 207                         }
 208 <INITIAL>{double}       {
 209                                 parser_lval.dbl = strtod(yytext, NULL);
 210                                 return aDOUBLE;
 211                         }
 212 SAFEARRAY{ws}*/\(       return tSAFEARRAY;
 213 {cident}                return kw_token(yytext);
 214 <INITIAL,ATTR>\n        line_number++;
 215 <INITIAL,ATTR>{ws}
 216 <INITIAL,ATTR>\<\<      return SHL;
 217 <INITIAL,ATTR>\>\>      return SHR;
 218 <INITIAL,ATTR>\-\>      return MEMBERPTR;
 219 <INITIAL,ATTR>==        return EQUALITY;
 220 <INITIAL,ATTR>!=        return INEQUALITY;
 221 <INITIAL,ATTR>\>=       return GREATEREQUAL;
 222 <INITIAL,ATTR>\<=       return LESSEQUAL;
 223 <INITIAL,ATTR>\|\|      return LOGICALOR;
 224 <INITIAL,ATTR>&&        return LOGICALAND;
 225 <INITIAL,ATTR>\.\.\.    return ELLIPSIS;
 226 <INITIAL,ATTR>.         return yytext[0];
 227 <<EOF>>                 {
 228                                 if (import_stack_ptr)
 229                                         return aEOF;
 230                                 else yyterminate();
 231                         }
 232 %%
 233
 234 #ifndef parser_wrap
 235 int parser_wrap(void)
 236 {
 237         return 1;
 238 }
 239 #endif
 240
 241 struct keyword {
 242         const char *kw;
 243         int token;
 244 };
 245
 246 /* This table MUST be alphabetically sorted on the kw field */
 247 static const struct keyword keywords[] = {
 248         {"FALSE",                       tFALSE},
 249         {"NULL",                        tNULL},
 250         {"TRUE",                        tTRUE},
 251         {"__cdecl",                     tCDECL},
 252         {"__fastcall",                  tFASTCALL},
 253         {"__int3264",                   tINT3264},
 254         {"__int64",                     tINT64},
 255         {"__pascal",                    tPASCAL},
 256         {"__stdcall",                   tSTDCALL},
 257         {"_cdecl",                      tCDECL},
 258         {"_fastcall",                   tFASTCALL},
 259         {"_pascal",                     tPASCAL},
 260         {"_stdcall",                    tSTDCALL},
 261         {"boolean",                     tBOOLEAN},
 262         {"byte",                        tBYTE},
 263         {"case",                        tCASE},
 264         {"cdecl",                       tCDECL},
 265         {"char",                        tCHAR},
 266         {"coclass",                     tCOCLASS},
 267         {"const",                       tCONST},
 268         {"cpp_quote",                   tCPPQUOTE},
 269         {"default",                     tDEFAULT},
 270         {"dispinterface",               tDISPINTERFACE},
 271         {"double",                      tDOUBLE},
 272         {"enum",                        tENUM},
 273         {"error_status_t",              tERRORSTATUST},
 274         {"extern",                      tEXTERN},
 275         {"float",                       tFLOAT},
 276         {"handle_t",                    tHANDLET},
 277         {"hyper",                       tHYPER},
 278         {"import",                      tIMPORT},
 279         {"importlib",                   tIMPORTLIB},
 280         {"inline",                      tINLINE},
 281         {"int",                         tINT},
 282         {"interface",                   tINTERFACE},
 283         {"library",                     tLIBRARY},
 284         {"long",                        tLONG},
 285         {"methods",                     tMETHODS},
 286         {"module",                      tMODULE},
 287         {"namespace",                   tNAMESPACE},
 288         {"pascal",                      tPASCAL},
 289         {"properties",                  tPROPERTIES},
 290         {"register",                    tREGISTER},
 291         {"short",                       tSHORT},
 292         {"signed",                      tSIGNED},
 293         {"sizeof",                      tSIZEOF},
 294         {"small",                       tSMALL},
 295         {"static",                      tSTATIC},
 296         {"stdcall",                     tSTDCALL},
 297         {"struct",                      tSTRUCT},
 298         {"switch",                      tSWITCH},
 299         {"typedef",                     tTYPEDEF},
 300         {"union",                       tUNION},
 301         {"unsigned",                    tUNSIGNED},
 302         {"void",                        tVOID},
 303         {"wchar_t",                     tWCHAR},
 304 };
 305 #define NKEYWORDS (sizeof(keywords)/sizeof(keywords[0]))
 306
 307 /* keywords only recognized in attribute lists
 308  * This table MUST be alphabetically sorted on the kw field
 309  */
 310 static const struct keyword attr_keywords[] =
 311 {
 312         {"aggregatable",                tAGGREGATABLE},
 313         {"allocate",                    tALLOCATE},
 314         {"annotation",                  tANNOTATION},
 315         {"apartment",                   tAPARTMENT},
 316         {"appobject",                   tAPPOBJECT},
 317         {"async",                       tASYNC},
 318         {"async_uuid",                  tASYNCUUID},
 319         {"auto_handle",                 tAUTOHANDLE},
 320         {"bindable",                    tBINDABLE},
 321         {"both",                        tBOTH},
 322         {"broadcast",                   tBROADCAST},
 323         {"byte_count",                  tBYTECOUNT},
 324         {"call_as",                     tCALLAS},
 325         {"callback",                    tCALLBACK},
 326         {"code",                        tCODE},
 327         {"comm_status",                 tCOMMSTATUS},
 328         {"context_handle",              tCONTEXTHANDLE},
 329         {"context_handle_noserialize",  tCONTEXTHANDLENOSERIALIZE},
 330         {"context_handle_serialize",    tCONTEXTHANDLENOSERIALIZE},
 331         {"control",                     tCONTROL},
 332         {"decode",                      tDECODE},
 333         {"defaultbind",                 tDEFAULTBIND},
 334         {"defaultcollelem",             tDEFAULTCOLLELEM},
 335         {"defaultvalue",                tDEFAULTVALUE},
 336         {"defaultvtable",               tDEFAULTVTABLE},
 337         {"disable_consistency_check",   tDISABLECONSISTENCYCHECK},
 338         {"displaybind",                 tDISPLAYBIND},
 339         {"dllname",                     tDLLNAME},
 340         {"dual",                        tDUAL},
 341         {"enable_allocate",             tENABLEALLOCATE},
 342         {"encode",                      tENCODE},
 343         {"endpoint",                    tENDPOINT},
 344         {"entry",                       tENTRY},
 345         {"explicit_handle",             tEXPLICITHANDLE},
 346         {"fault_status",                tFAULTSTATUS},
 347         {"force_allocate",              tFORCEALLOCATE},
 348         {"free",                        tFREE},
 349         {"handle",                      tHANDLE},
 350         {"helpcontext",                 tHELPCONTEXT},
 351         {"helpfile",                    tHELPFILE},
 352         {"helpstring",                  tHELPSTRING},
 353         {"helpstringcontext",           tHELPSTRINGCONTEXT},
 354         {"helpstringdll",               tHELPSTRINGDLL},
 355         {"hidden",                      tHIDDEN},
 356         {"id",                          tID},
 357         {"idempotent",                  tIDEMPOTENT},
 358         {"ignore",                      tIGNORE},
 359         {"iid_is",                      tIIDIS},
 360         {"immediatebind",               tIMMEDIATEBIND},
 361         {"implicit_handle",             tIMPLICITHANDLE},
 362         {"in",                          tIN},
 363         {"in_line",                     tIN_LINE},
 364         {"input_sync",                  tINPUTSYNC},
 365         {"lcid",                        tLCID},
 366         {"length_is",                   tLENGTHIS},
 367         {"licensed",                    tLICENSED},
 368         {"local",                       tLOCAL},
 369         {"maybe",                       tMAYBE},
 370         {"message",                     tMESSAGE},
 371         {"neutral",                     tNEUTRAL},
 372         {"nocode",                      tNOCODE},
 373         {"nonbrowsable",                tNONBROWSABLE},
 374         {"noncreatable",                tNONCREATABLE},
 375         {"nonextensible",               tNONEXTENSIBLE},
 376         {"notify",                      tNOTIFY},
 377         {"notify_flag",                 tNOTIFYFLAG},
 378         {"object",                      tOBJECT},
 379         {"odl",                         tODL},
 380         {"oleautomation",               tOLEAUTOMATION},
 381         {"optimize",                    tOPTIMIZE},
 382         {"optional",                    tOPTIONAL},
 383         {"out",                         tOUT},
 384         {"partial_ignore",              tPARTIALIGNORE},
 385         {"pointer_default",             tPOINTERDEFAULT},
 386         {"progid",                      tPROGID},
 387         {"propget",                     tPROPGET},
 388         {"propput",                     tPROPPUT},
 389         {"propputref",                  tPROPPUTREF},
 390         {"proxy",                       tPROXY},
 391         {"ptr",                         tPTR},
 392         {"public",                      tPUBLIC},
 393         {"range",                       tRANGE},
 394         {"readonly",                    tREADONLY},
 395         {"ref",                         tREF},
 396         {"represent_as",                tREPRESENTAS},
 397         {"requestedit",                 tREQUESTEDIT},
 398         {"restricted",                  tRESTRICTED},
 399         {"retval",                      tRETVAL},
 400         {"single",                      tSINGLE},
 401         {"size_is",                     tSIZEIS},
 402         {"source",                      tSOURCE},
 403         {"strict_context_handle",       tSTRICTCONTEXTHANDLE},
 404         {"string",                      tSTRING},
 405         {"switch_is",                   tSWITCHIS},
 406         {"switch_type",                 tSWITCHTYPE},
 407         {"threading",                   tTHREADING},
 408         {"transmit_as",                 tTRANSMITAS},
 409         {"uidefault",                   tUIDEFAULT},
 410         {"unique",                      tUNIQUE},
 411         {"user_marshal",                tUSERMARSHAL},
 412         {"usesgetlasterror",            tUSESGETLASTERROR},
 413         {"uuid",                        tUUID},
 414         {"v1_enum",                     tV1ENUM},
 415         {"vararg",                      tVARARG},
 416         {"version",                     tVERSION},
 417         {"vi_progid",                   tVIPROGID},
 418         {"wire_marshal",                tWIREMARSHAL},
 419 };
 420
 421 /* attributes TODO:
 422     custom
 423     first_is
 424     last_is
 425     max_is
 426     min_is
 427 */
 428
 429 #define KWP(p) ((const struct keyword *)(p))
 430
 431 static int kw_cmp_func(const void *s1, const void *s2)
 432 {
 433         return strcmp(KWP(s1)->kw, KWP(s2)->kw);
 434 }
 435
 436 static int kw_token(const char *kw)
 437 {
 438         struct keyword key, *kwp;
 439         key.kw = kw;
 440         kwp = bsearch(&key, keywords, NKEYWORDS, sizeof(keywords[0]), kw_cmp_func);
 441         if (kwp && (winrt_mode || kwp->token != tNAMESPACE)) {
 442                 parser_lval.str = xstrdup(kwp->kw);
 443                 return kwp->token;
 444         }
 445         parser_lval.str = xstrdup(kw);
 446         return is_type(kw) ? aKNOWNTYPE : aIDENTIFIER;
 447 }
 448
 449 static int attr_token(const char *kw)
 450 {
 451         struct keyword key, *kwp;
 452         key.kw = kw;
 453         kwp = bsearch(&key, attr_keywords, sizeof(attr_keywords)/sizeof(attr_keywords[0]),
 454                       sizeof(attr_keywords[0]), kw_cmp_func);
 455         if (kwp) {
 456             parser_lval.str = xstrdup(kwp->kw);
 457             return kwp->token;
 458         }
 459         return kw_token(kw);
 460 }
 461
 462 static void addcchar(char c)
 463 {
 464         if(cbufidx >= cbufalloc)
 465         {
 466                 cbufalloc += 1024;
 467                 cbuffer = xrealloc(cbuffer, cbufalloc * sizeof(cbuffer[0]));
 468                 if(cbufalloc > 65536)
 469                         parser_warning("Reallocating string buffer larger than 64kB\n");
 470         }
 471         cbuffer[cbufidx++] = c;
 472 }
 473
 474 static char *get_buffered_cstring(void)
 475 {
 476         addcchar(0);
 477         return xstrdup(cbuffer);
 478 }
 479
 480 void pop_import(void)
 481 {
 482         int ptr = import_stack_ptr-1;
 483
 484         fclose(yyin);
 485         yy_delete_buffer( YY_CURRENT_BUFFER );
 486         yy_switch_to_buffer( import_stack[ptr].state );
 487         if (temp_name) {
 488                 unlink(temp_name);
 489                 free(temp_name);
 490         }
 491         temp_name = import_stack[ptr].temp_name;
 492         input_name = import_stack[ptr].input_name;
 493         line_number = import_stack[ptr].line_number;
 494         import_stack_ptr--;
 495 }
 496
 497 struct imports {
 498         char *name;
 499         struct imports *next;
 500 } *first_import;
 501
 502 int do_import(char *fname)
 503 {
 504         FILE *f;
 505         char *path, *name;
 506         struct imports *import;
 507         int ptr = import_stack_ptr;
 508         int ret, fd;
 509
 510         import = first_import;
 511         while (import && strcmp(import->name, fname))
 512                 import = import->next;
 513         if (import) return 0; /* already imported */
 514
 515         import = xmalloc(sizeof(struct imports));
 516         import->name = xstrdup(fname);
 517         import->next = first_import;
 518         first_import = import;
 519
 520         /* don't search for a file name with a path in the include directories,
 521          * for compatibility with MIDL */
 522         if (strchr( fname, '/' ) || strchr( fname, '\\' ))
 523             path = xstrdup( fname );
 524         else if (!(path = wpp_find_include( fname, input_name )))
 525             error_loc("Unable to open include file %s\n", fname);
 526
 527         import_stack[ptr].temp_name = temp_name;
 528         import_stack[ptr].input_name = input_name;
 529         import_stack[ptr].line_number = line_number;
 530         import_stack_ptr++;
 531         input_name = path;
 532         line_number = 1;
 533
 534         name = xstrdup( "widl.XXXXXX" );
 535         if((fd = mkstemps( name, 0 )) == -1)
 536             error("Could not generate a temp name from %s\n", name);
 537
 538         temp_name = name;
 539         if (!(f = fdopen(fd, "wt")))
 540             error("Could not open fd %s for writing\n", name);
 541
 542         ret = wpp_parse( path, f );
 543         fclose( f );
 544         if (ret) exit(1);
 545
 546         if((f = fopen(temp_name, "r")) == NULL)
 547                 error_loc("Unable to open %s\n", temp_name);
 548
 549         import_stack[ptr].state = YY_CURRENT_BUFFER;
 550         yy_switch_to_buffer(yy_create_buffer(f, YY_BUF_SIZE));
 551         return 1;
 552 }
 553
 554 void abort_import(void)
 555 {
 556         int ptr;
 557
 558         for (ptr=0; ptr<import_stack_ptr; ptr++)
 559                 unlink(import_stack[ptr].temp_name);
 560 }
 561
 562 static void warning_disable(int warning)
 563 {
 564     warning_t *warning_entry;
 565     LIST_FOR_EACH_ENTRY(warning_entry, disabled_warnings, warning_t, entry)
 566         if(warning_entry->num == warning)
 567             return;
 568     warning_entry = xmalloc( sizeof(*warning_entry) );
 569     warning_entry->num = warning;
 570     list_add_tail(disabled_warnings, &warning_entry->entry);
 571 }
 572
 573 static void warning_enable(int warning)
 574 {
 575     warning_t *warning_entry;
 576     LIST_FOR_EACH_ENTRY(warning_entry, disabled_warnings, warning_t, entry)
 577         if(warning_entry->num == warning)
 578         {
 579             list_remove(&warning_entry->entry);
 580             free(warning_entry);
 581             break;
 582         }
 583 }
 584
 585 int do_warning(char *toggle, warning_list_t *wnum)
 586 {
 587     warning_t *warning, *next;
 588     int ret = 1;
 589     if(!disabled_warnings)
 590     {
 591         disabled_warnings = xmalloc( sizeof(*disabled_warnings) );
 592         list_init( disabled_warnings );
 593     }
 594
 595     if(!strcmp(toggle, "disable"))
 596         LIST_FOR_EACH_ENTRY(warning, wnum, warning_t, entry)
 597             warning_disable(warning->num);
 598     else if(!strcmp(toggle, "enable"))
 599         LIST_FOR_EACH_ENTRY(warning, wnum, warning_t, entry)
 600             warning_enable(warning->num);
 601     else
 602         ret = 0;
 603
 604     LIST_FOR_EACH_ENTRY_SAFE(warning, next, wnum, warning_t, entry)
 605         free(warning);
 606     return ret;
 607 }
 608
 609 int is_warning_enabled(int warning)
 610 {
 611     warning_t *warning_entry;
 612     if(!disabled_warnings)
 613         return 1;
 614     LIST_FOR_EACH_ENTRY(warning_entry, disabled_warnings, warning_t, entry)
 615         if(warning_entry->num == warning)
 616             return 0;
 617     return 1;
 618 }