Annotation of embedaddon/lighttpd/src/lempar.c, revision 1.1
1.1 ! misho 1: /* Driver template for the LEMON parser generator.
! 2: ** The author disclaims copyright to this source code.
! 3: */
! 4: /* First off, code is include which follows the "include" declaration
! 5: ** in the input file. */
! 6: #include <stdio.h>
! 7: %%
! 8: /* Next is all token values, in a form suitable for use by makeheaders.
! 9: ** This section will be null unless lemon is run with the -m switch.
! 10: */
! 11: /*
! 12: ** These constants (all generated automatically by the parser generator)
! 13: ** specify the various kinds of tokens (terminals) that the parser
! 14: ** understands.
! 15: **
! 16: ** Each symbol here is a terminal symbol in the grammar.
! 17: */
! 18: %%
! 19: /* Make sure the INTERFACE macro is defined.
! 20: */
! 21: #ifndef INTERFACE
! 22: # define INTERFACE 1
! 23: #endif
! 24: /* The next thing included is series of defines which control
! 25: ** various aspects of the generated parser.
! 26: ** YYCODETYPE is the data type used for storing terminal
! 27: ** and nonterminal numbers. "unsigned char" is
! 28: ** used if there are fewer than 250 terminals
! 29: ** and nonterminals. "int" is used otherwise.
! 30: ** YYNOCODE is a number of type YYCODETYPE which corresponds
! 31: ** to no legal terminal or nonterminal number. This
! 32: ** number is used to fill in empty slots of the hash
! 33: ** table.
! 34: ** YYFALLBACK If defined, this indicates that one or more tokens
! 35: ** have fall-back values which should be used if the
! 36: ** original value of the token will not parse.
! 37: ** YYACTIONTYPE is the data type used for storing terminal
! 38: ** and nonterminal numbers. "unsigned char" is
! 39: ** used if there are fewer than 250 rules and
! 40: ** states combined. "int" is used otherwise.
! 41: ** ParseTOKENTYPE is the data type used for minor tokens given
! 42: ** directly to the parser from the tokenizer.
! 43: ** YYMINORTYPE is the data type used for all minor tokens.
! 44: ** This is typically a union of many types, one of
! 45: ** which is ParseTOKENTYPE. The entry in the union
! 46: ** for base tokens is called "yy0".
! 47: ** YYSTACKDEPTH is the maximum depth of the parser's stack.
! 48: ** ParseARG_SDECL A static variable declaration for the %extra_argument
! 49: ** ParseARG_PDECL A parameter declaration for the %extra_argument
! 50: ** ParseARG_STORE Code to store %extra_argument into yypParser
! 51: ** ParseARG_FETCH Code to extract %extra_argument from yypParser
! 52: ** YYNSTATE the combined number of states.
! 53: ** YYNRULE the number of rules in the grammar
! 54: ** YYERRORSYMBOL is the code number of the error symbol. If not
! 55: ** defined, then do no error processing.
! 56: */
! 57: %%
! 58: #define YY_NO_ACTION (YYNSTATE+YYNRULE+2)
! 59: #define YY_ACCEPT_ACTION (YYNSTATE+YYNRULE+1)
! 60: #define YY_ERROR_ACTION (YYNSTATE+YYNRULE)
! 61:
! 62: /* Next are that tables used to determine what action to take based on the
! 63: ** current state and lookahead token. These tables are used to implement
! 64: ** functions that take a state number and lookahead value and return an
! 65: ** action integer.
! 66: **
! 67: ** Suppose the action integer is N. Then the action is determined as
! 68: ** follows
! 69: **
! 70: ** 0 <= N < YYNSTATE Shift N. That is, push the lookahead
! 71: ** token onto the stack and goto state N.
! 72: **
! 73: ** YYNSTATE <= N < YYNSTATE+YYNRULE Reduce by rule N-YYNSTATE.
! 74: **
! 75: ** N == YYNSTATE+YYNRULE A syntax error has occurred.
! 76: **
! 77: ** N == YYNSTATE+YYNRULE+1 The parser accepts its input.
! 78: **
! 79: ** N == YYNSTATE+YYNRULE+2 No such action. Denotes unused
! 80: ** slots in the yy_action[] table.
! 81: **
! 82: ** The action table is constructed as a single large table named yy_action[].
! 83: ** Given state S and lookahead X, the action is computed as
! 84: **
! 85: ** yy_action[ yy_shift_ofst[S] + X ]
! 86: **
! 87: ** If the index value yy_shift_ofst[S]+X is out of range or if the value
! 88: ** yy_lookahead[yy_shift_ofst[S]+X] is not equal to X or if yy_shift_ofst[S]
! 89: ** is equal to YY_SHIFT_USE_DFLT, it means that the action is not in the table
! 90: ** and that yy_default[S] should be used instead.
! 91: **
! 92: ** The formula above is for computing the action when the lookahead is
! 93: ** a terminal symbol. If the lookahead is a non-terminal (as occurs after
! 94: ** a reduce action) then the yy_reduce_ofst[] array is used in place of
! 95: ** the yy_shift_ofst[] array and YY_REDUCE_USE_DFLT is used in place of
! 96: ** YY_SHIFT_USE_DFLT.
! 97: **
! 98: ** The following are the tables generated in this section:
! 99: **
! 100: ** yy_action[] A single table containing all actions.
! 101: ** yy_lookahead[] A table containing the lookahead for each entry in
! 102: ** yy_action. Used to detect hash collisions.
! 103: ** yy_shift_ofst[] For each state, the offset into yy_action for
! 104: ** shifting terminals.
! 105: ** yy_reduce_ofst[] For each state, the offset into yy_action for
! 106: ** shifting non-terminals after a reduce.
! 107: ** yy_default[] Default action for each state.
! 108: */
! 109: %%
! 110: #define YY_SZ_ACTTAB (sizeof(yy_action)/sizeof(yy_action[0]))
! 111:
! 112: /* The next table maps tokens into fallback tokens. If a construct
! 113: ** like the following:
! 114: **
! 115: ** %fallback ID X Y Z.
! 116: **
! 117: ** appears in the grammer, then ID becomes a fallback token for X, Y,
! 118: ** and Z. Whenever one of the tokens X, Y, or Z is input to the parser
! 119: ** but it does not parse, the type of the token is changed to ID and
! 120: ** the parse is retried before an error is thrown.
! 121: */
! 122: #ifdef YYFALLBACK
! 123: static const YYCODETYPE yyFallback[] = {
! 124: %%
! 125: };
! 126: #endif /* YYFALLBACK */
! 127:
! 128: /* The following structure represents a single element of the
! 129: ** parser's stack. Information stored includes:
! 130: **
! 131: ** + The state number for the parser at this level of the stack.
! 132: **
! 133: ** + The value of the token stored at this level of the stack.
! 134: ** (In other words, the "major" token.)
! 135: **
! 136: ** + The semantic value stored at this level of the stack. This is
! 137: ** the information used by the action routines in the grammar.
! 138: ** It is sometimes called the "minor" token.
! 139: */
! 140: struct yyStackEntry {
! 141: int stateno; /* The state-number */
! 142: int major; /* The major token value. This is the code
! 143: ** number for the token at this stack level */
! 144: YYMINORTYPE minor; /* The user-supplied minor token value. This
! 145: ** is the value of the token */
! 146: };
! 147: typedef struct yyStackEntry yyStackEntry;
! 148:
! 149: /* The state of the parser is completely contained in an instance of
! 150: ** the following structure */
! 151: struct yyParser {
! 152: int yyidx; /* Index of top element in stack */
! 153: int yyerrcnt; /* Shifts left before out of the error */
! 154: ParseARG_SDECL /* A place to hold %extra_argument */
! 155: yyStackEntry yystack[YYSTACKDEPTH]; /* The parser's stack */
! 156: };
! 157: typedef struct yyParser yyParser;
! 158:
! 159: #ifndef NDEBUG
! 160: #include <stdio.h>
! 161: static FILE *yyTraceFILE = NULL;
! 162: static char *yyTracePrompt = NULL;
! 163: #endif /* NDEBUG */
! 164:
! 165: #ifndef NDEBUG
! 166: /*
! 167: ** Turn parser tracing on by giving a stream to which to write the trace
! 168: ** and a prompt to preface each trace message. Tracing is turned off
! 169: ** by making either argument NULL
! 170: **
! 171: ** Inputs:
! 172: ** <ul>
! 173: ** <li> A FILE* to which trace output should be written.
! 174: ** If NULL, then tracing is turned off.
! 175: ** <li> A prefix string written at the beginning of every
! 176: ** line of trace output. If NULL, then tracing is
! 177: ** turned off.
! 178: ** </ul>
! 179: **
! 180: ** Outputs:
! 181: ** None.
! 182: */
! 183: #if 0
! 184: void ParseTrace(FILE *TraceFILE, char *zTracePrompt){
! 185: yyTraceFILE = TraceFILE;
! 186: yyTracePrompt = zTracePrompt;
! 187: if( yyTraceFILE==0 ) yyTracePrompt = 0;
! 188: else if( yyTracePrompt==0 ) yyTraceFILE = 0;
! 189: }
! 190: #endif
! 191: #endif /* NDEBUG */
! 192:
! 193: #ifndef NDEBUG
! 194: /* For tracing shifts, the names of all terminals and nonterminals
! 195: ** are required. The following table supplies these names */
! 196: static const char *yyTokenName[] = {
! 197: %%
! 198: };
! 199: #endif /* NDEBUG */
! 200:
! 201: #ifndef NDEBUG
! 202: /* For tracing reduce actions, the names of all rules are required.
! 203: */
! 204: static const char *yyRuleName[] = {
! 205: %%
! 206: };
! 207: #endif /* NDEBUG */
! 208:
! 209: /*
! 210: ** This function returns the symbolic name associated with a token
! 211: ** value.
! 212: */
! 213: #if 0
! 214: const char *ParseTokenName(int tokenType){
! 215: #ifndef NDEBUG
! 216: if( tokenType>0 && (size_t)tokenType<(sizeof(yyTokenName)/sizeof(yyTokenName[0])) ){
! 217: return yyTokenName[tokenType];
! 218: }else{
! 219: return "Unknown";
! 220: }
! 221: #else
! 222: return "";
! 223: #endif
! 224: }
! 225: #endif
! 226:
! 227: /*
! 228: ** This function allocates a new parser.
! 229: ** The only argument is a pointer to a function which works like
! 230: ** malloc.
! 231: **
! 232: ** Inputs:
! 233: ** A pointer to the function used to allocate memory.
! 234: **
! 235: ** Outputs:
! 236: ** A pointer to a parser. This pointer is used in subsequent calls
! 237: ** to Parse and ParseFree.
! 238: */
! 239: void *ParseAlloc(void *(*mallocProc)(size_t)){
! 240: yyParser *pParser;
! 241: pParser = (yyParser*)(*mallocProc)( (size_t)sizeof(yyParser) );
! 242: if( pParser ){
! 243: pParser->yyidx = -1;
! 244: }
! 245: return pParser;
! 246: }
! 247:
! 248: /* The following function deletes the value associated with a
! 249: ** symbol. The symbol can be either a terminal or nonterminal.
! 250: ** "yymajor" is the symbol code, and "yypminor" is a pointer to
! 251: ** the value.
! 252: */
! 253: static void yy_destructor(YYCODETYPE yymajor, YYMINORTYPE *yypminor){
! 254: switch( yymajor ){
! 255: /* Here is inserted the actions which take place when a
! 256: ** terminal or non-terminal is destroyed. This can happen
! 257: ** when the symbol is popped from the stack during a
! 258: ** reduce or during error processing or when a parser is
! 259: ** being destroyed before it is finished parsing.
! 260: **
! 261: ** Note: during a reduce, the only symbols destroyed are those
! 262: ** which appear on the RHS of the rule, but which are not used
! 263: ** inside the C code.
! 264: */
! 265: %%
! 266: default: break; /* If no destructor action specified: do nothing */
! 267: }
! 268: }
! 269:
! 270: /*
! 271: ** Pop the parser's stack once.
! 272: **
! 273: ** If there is a destructor routine associated with the token which
! 274: ** is popped from the stack, then call it.
! 275: **
! 276: ** Return the major token number for the symbol popped.
! 277: */
! 278: static int yy_pop_parser_stack(yyParser *pParser){
! 279: YYCODETYPE yymajor;
! 280: yyStackEntry *yytos = &pParser->yystack[pParser->yyidx];
! 281:
! 282: if( pParser->yyidx<0 ) return 0;
! 283: #ifndef NDEBUG
! 284: if( yyTraceFILE && pParser->yyidx>=0 ){
! 285: fprintf(yyTraceFILE,"%sPopping %s\n",
! 286: yyTracePrompt,
! 287: yyTokenName[yytos->major]);
! 288: }
! 289: #endif
! 290: yymajor = yytos->major;
! 291: yy_destructor( yymajor, &yytos->minor);
! 292: pParser->yyidx--;
! 293: return yymajor;
! 294: }
! 295:
! 296: /*
! 297: ** Deallocate and destroy a parser. Destructors are all called for
! 298: ** all stack elements before shutting the parser down.
! 299: **
! 300: ** Inputs:
! 301: ** <ul>
! 302: ** <li> A pointer to the parser. This should be a pointer
! 303: ** obtained from ParseAlloc.
! 304: ** <li> A pointer to a function used to reclaim memory obtained
! 305: ** from malloc.
! 306: ** </ul>
! 307: */
! 308: void ParseFree(
! 309: void *p, /* The parser to be deleted */
! 310: void (*freeProc)(void*) /* Function used to reclaim memory */
! 311: ){
! 312: yyParser *pParser = (yyParser*)p;
! 313: if( pParser==NULL ) return;
! 314: while( pParser->yyidx>=0 ) yy_pop_parser_stack(pParser);
! 315: (*freeProc)((void*)pParser);
! 316: }
! 317:
! 318: /*
! 319: ** Find the appropriate action for a parser given the terminal
! 320: ** look-ahead token iLookAhead.
! 321: **
! 322: ** If the look-ahead token is YYNOCODE, then check to see if the action is
! 323: ** independent of the look-ahead. If it is, return the action, otherwise
! 324: ** return YY_NO_ACTION.
! 325: */
! 326: static int yy_find_shift_action(
! 327: yyParser *pParser, /* The parser */
! 328: int iLookAhead /* The look-ahead token */
! 329: ){
! 330: int i;
! 331: int stateno = pParser->yystack[pParser->yyidx].stateno;
! 332:
! 333: /* if( pParser->yyidx<0 ) return YY_NO_ACTION; */
! 334: i = yy_shift_ofst[stateno];
! 335: if( i==YY_SHIFT_USE_DFLT ){
! 336: return yy_default[stateno];
! 337: }
! 338: if( iLookAhead==YYNOCODE ){
! 339: return YY_NO_ACTION;
! 340: }
! 341: i += iLookAhead;
! 342: if( i<0 || (size_t)i>=YY_SZ_ACTTAB || yy_lookahead[i]!=iLookAhead ){
! 343: #ifdef YYFALLBACK
! 344: int iFallback; /* Fallback token */
! 345: if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
! 346: && (iFallback = yyFallback[iLookAhead])!=0 ){
! 347: #ifndef NDEBUG
! 348: if( yyTraceFILE ){
! 349: fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",
! 350: yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[iFallback]);
! 351: }
! 352: #endif
! 353: return yy_find_shift_action(pParser, iFallback);
! 354: }
! 355: #endif
! 356: return yy_default[stateno];
! 357: }else{
! 358: return yy_action[i];
! 359: }
! 360: }
! 361:
! 362: /*
! 363: ** Find the appropriate action for a parser given the non-terminal
! 364: ** look-ahead token iLookAhead.
! 365: **
! 366: ** If the look-ahead token is YYNOCODE, then check to see if the action is
! 367: ** independent of the look-ahead. If it is, return the action, otherwise
! 368: ** return YY_NO_ACTION.
! 369: */
! 370: static int yy_find_reduce_action(
! 371: yyParser *pParser, /* The parser */
! 372: int iLookAhead /* The look-ahead token */
! 373: ){
! 374: int i;
! 375: int stateno = pParser->yystack[pParser->yyidx].stateno;
! 376:
! 377: i = yy_reduce_ofst[stateno];
! 378: if( i==YY_REDUCE_USE_DFLT ){
! 379: return yy_default[stateno];
! 380: }
! 381: if( iLookAhead==YYNOCODE ){
! 382: return YY_NO_ACTION;
! 383: }
! 384: i += iLookAhead;
! 385: if( i<0 || (size_t)i>=YY_SZ_ACTTAB || yy_lookahead[i]!=iLookAhead ){
! 386: return yy_default[stateno];
! 387: }else{
! 388: return yy_action[i];
! 389: }
! 390: }
! 391:
! 392: /*
! 393: ** Perform a shift action.
! 394: */
! 395: static void yy_shift(
! 396: yyParser *yypParser, /* The parser to be shifted */
! 397: int yyNewState, /* The new state to shift in */
! 398: int yyMajor, /* The major token to shift in */
! 399: YYMINORTYPE *yypMinor /* Pointer ot the minor token to shift in */
! 400: ){
! 401: yyStackEntry *yytos;
! 402: yypParser->yyidx++;
! 403: if( yypParser->yyidx>=YYSTACKDEPTH ){
! 404: ParseARG_FETCH;
! 405: yypParser->yyidx--;
! 406: #ifndef NDEBUG
! 407: if( yyTraceFILE ){
! 408: fprintf(yyTraceFILE,"%sStack Overflow!\n",yyTracePrompt);
! 409: }
! 410: #endif
! 411: while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
! 412: /* Here code is inserted which will execute if the parser
! 413: ** stack every overflows */
! 414: %%
! 415: ParseARG_STORE; /* Suppress warning about unused %extra_argument var */
! 416: return;
! 417: }
! 418: yytos = &yypParser->yystack[yypParser->yyidx];
! 419: yytos->stateno = yyNewState;
! 420: yytos->major = yyMajor;
! 421: yytos->minor = *yypMinor;
! 422: #ifndef NDEBUG
! 423: if( yyTraceFILE && yypParser->yyidx>0 ){
! 424: int i;
! 425: fprintf(yyTraceFILE,"%sShift %d\n",yyTracePrompt,yyNewState);
! 426: fprintf(yyTraceFILE,"%sStack:",yyTracePrompt);
! 427: for(i=1; i<=yypParser->yyidx; i++)
! 428: fprintf(yyTraceFILE," %s",yyTokenName[yypParser->yystack[i].major]);
! 429: fprintf(yyTraceFILE,"\n");
! 430: }
! 431: #endif
! 432: }
! 433:
! 434: /* The following table contains information about every rule that
! 435: ** is used during the reduce.
! 436: */
! 437: static struct {
! 438: YYCODETYPE lhs; /* Symbol on the left-hand side of the rule */
! 439: unsigned char nrhs; /* Number of right-hand side symbols in the rule */
! 440: } yyRuleInfo[] = {
! 441: %%
! 442: };
! 443:
! 444: static void yy_accept(yyParser*); /* Forward Declaration */
! 445:
! 446: /*
! 447: ** Perform a reduce action and the shift that must immediately
! 448: ** follow the reduce.
! 449: */
! 450: static void yy_reduce(
! 451: yyParser *yypParser, /* The parser */
! 452: int yyruleno /* Number of the rule by which to reduce */
! 453: ){
! 454: int yygoto; /* The next state */
! 455: int yyact; /* The next action */
! 456: YYMINORTYPE yygotominor; /* The LHS of the rule reduced */
! 457: yyStackEntry *yymsp; /* The top of the parser's stack */
! 458: int yysize; /* Amount to pop the stack */
! 459: ParseARG_FETCH;
! 460: yymsp = &yypParser->yystack[yypParser->yyidx];
! 461: #ifndef NDEBUG
! 462: if( yyTraceFILE && yyruleno>=0
! 463: && (size_t)yyruleno<sizeof(yyRuleName)/sizeof(yyRuleName[0]) ){
! 464: fprintf(yyTraceFILE, "%sReduce [%s].\n", yyTracePrompt,
! 465: yyRuleName[yyruleno]);
! 466: }
! 467: #endif /* NDEBUG */
! 468:
! 469: switch( yyruleno ){
! 470: /* Beginning here are the reduction cases. A typical example
! 471: ** follows:
! 472: ** case 0:
! 473: ** #line <lineno> <grammarfile>
! 474: ** { ... } // User supplied code
! 475: ** #line <lineno> <thisfile>
! 476: ** break;
! 477: */
! 478: %%
! 479: };
! 480: yygoto = yyRuleInfo[yyruleno].lhs;
! 481: yysize = yyRuleInfo[yyruleno].nrhs;
! 482: yypParser->yyidx -= yysize;
! 483: yyact = yy_find_reduce_action(yypParser,yygoto);
! 484: if( yyact < YYNSTATE ){
! 485: yy_shift(yypParser,yyact,yygoto,&yygotominor);
! 486: }else if( yyact == YYNSTATE + YYNRULE + 1 ){
! 487: yy_accept(yypParser);
! 488: }
! 489: }
! 490:
! 491: /*
! 492: ** The following code executes when the parse fails
! 493: */
! 494: static void yy_parse_failed(
! 495: yyParser *yypParser /* The parser */
! 496: ){
! 497: ParseARG_FETCH;
! 498: #ifndef NDEBUG
! 499: if( yyTraceFILE ){
! 500: fprintf(yyTraceFILE,"%sFail!\n",yyTracePrompt);
! 501: }
! 502: #endif
! 503: while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
! 504: /* Here code is inserted which will be executed whenever the
! 505: ** parser fails */
! 506: %%
! 507: ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
! 508: }
! 509:
! 510: /*
! 511: ** The following code executes when a syntax error first occurs.
! 512: */
! 513: static void yy_syntax_error(
! 514: yyParser *yypParser, /* The parser */
! 515: int yymajor, /* The major type of the error token */
! 516: YYMINORTYPE yyminor /* The minor type of the error token */
! 517: ){
! 518: ParseARG_FETCH;
! 519: UNUSED(yymajor);
! 520: UNUSED(yyminor);
! 521: #define TOKEN (yyminor.yy0)
! 522: %%
! 523: ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
! 524: }
! 525:
! 526: /*
! 527: ** The following is executed when the parser accepts
! 528: */
! 529: static void yy_accept(
! 530: yyParser *yypParser /* The parser */
! 531: ){
! 532: ParseARG_FETCH;
! 533: #ifndef NDEBUG
! 534: if( yyTraceFILE ){
! 535: fprintf(yyTraceFILE,"%sAccept!\n",yyTracePrompt);
! 536: }
! 537: #endif
! 538: while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
! 539: /* Here code is inserted which will be executed whenever the
! 540: ** parser accepts */
! 541: %%
! 542: ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
! 543: }
! 544:
! 545: /* The main parser program.
! 546: ** The first argument is a pointer to a structure obtained from
! 547: ** "ParseAlloc" which describes the current state of the parser.
! 548: ** The second argument is the major token number. The third is
! 549: ** the minor token. The fourth optional argument is whatever the
! 550: ** user wants (and specified in the grammar) and is available for
! 551: ** use by the action routines.
! 552: **
! 553: ** Inputs:
! 554: ** <ul>
! 555: ** <li> A pointer to the parser (an opaque structure.)
! 556: ** <li> The major token number.
! 557: ** <li> The minor token number.
! 558: ** <li> An option argument of a grammar-specified type.
! 559: ** </ul>
! 560: **
! 561: ** Outputs:
! 562: ** None.
! 563: */
! 564: void Parse(
! 565: void *yyp, /* The parser */
! 566: int yymajor, /* The major token code number */
! 567: ParseTOKENTYPE yyminor /* The value for the token */
! 568: ParseARG_PDECL /* Optional %extra_argument parameter */
! 569: ){
! 570: YYMINORTYPE yyminorunion;
! 571: int yyact; /* The parser action. */
! 572: int yyendofinput; /* True if we are at the end of input */
! 573: int yyerrorhit = 0; /* True if yymajor has invoked an error */
! 574: yyParser *yypParser; /* The parser */
! 575:
! 576: /* (re)initialize the parser, if necessary */
! 577: yypParser = (yyParser*)yyp;
! 578: if( yypParser->yyidx<0 ){
! 579: if( yymajor==0 ) return;
! 580: yypParser->yyidx = 0;
! 581: yypParser->yyerrcnt = -1;
! 582: yypParser->yystack[0].stateno = 0;
! 583: yypParser->yystack[0].major = 0;
! 584: }
! 585: yyminorunion.yy0 = yyminor;
! 586: yyendofinput = (yymajor==0);
! 587: ParseARG_STORE;
! 588:
! 589: #ifndef NDEBUG
! 590: if( yyTraceFILE ){
! 591: fprintf(yyTraceFILE,"%sInput %s\n",yyTracePrompt,yyTokenName[yymajor]);
! 592: }
! 593: #endif
! 594:
! 595: do{
! 596: yyact = yy_find_shift_action(yypParser,yymajor);
! 597: if( yyact<YYNSTATE ){
! 598: yy_shift(yypParser,yyact,yymajor,&yyminorunion);
! 599: yypParser->yyerrcnt--;
! 600: if( yyendofinput && yypParser->yyidx>=0 ){
! 601: yymajor = 0;
! 602: }else{
! 603: yymajor = YYNOCODE;
! 604: }
! 605: }else if( yyact < YYNSTATE + YYNRULE ){
! 606: yy_reduce(yypParser,yyact-YYNSTATE);
! 607: }else if( yyact == YY_ERROR_ACTION ){
! 608: int yymx;
! 609: #ifndef NDEBUG
! 610: if( yyTraceFILE ){
! 611: fprintf(yyTraceFILE,"%sSyntax Error!\n",yyTracePrompt);
! 612: }
! 613: #endif
! 614: #ifdef YYERRORSYMBOL
! 615: /* A syntax error has occurred.
! 616: ** The response to an error depends upon whether or not the
! 617: ** grammar defines an error token "ERROR".
! 618: **
! 619: ** This is what we do if the grammar does define ERROR:
! 620: **
! 621: ** * Call the %syntax_error function.
! 622: **
! 623: ** * Begin popping the stack until we enter a state where
! 624: ** it is legal to shift the error symbol, then shift
! 625: ** the error symbol.
! 626: **
! 627: ** * Set the error count to three.
! 628: **
! 629: ** * Begin accepting and shifting new tokens. No new error
! 630: ** processing will occur until three tokens have been
! 631: ** shifted successfully.
! 632: **
! 633: */
! 634: if( yypParser->yyerrcnt<0 ){
! 635: yy_syntax_error(yypParser,yymajor,yyminorunion);
! 636: }
! 637: yymx = yypParser->yystack[yypParser->yyidx].major;
! 638: if( yymx==YYERRORSYMBOL || yyerrorhit ){
! 639: #ifndef NDEBUG
! 640: if( yyTraceFILE ){
! 641: fprintf(yyTraceFILE,"%sDiscard input token %s\n",
! 642: yyTracePrompt,yyTokenName[yymajor]);
! 643: }
! 644: #endif
! 645: yy_destructor(yymajor,&yyminorunion);
! 646: yymajor = YYNOCODE;
! 647: }else{
! 648: while(
! 649: yypParser->yyidx >= 0 &&
! 650: yymx != YYERRORSYMBOL &&
! 651: (yyact = yy_find_shift_action(yypParser,YYERRORSYMBOL)) >= YYNSTATE
! 652: ){
! 653: yy_pop_parser_stack(yypParser);
! 654: }
! 655: if( yypParser->yyidx < 0 || yymajor==0 ){
! 656: yy_destructor(yymajor,&yyminorunion);
! 657: yy_parse_failed(yypParser);
! 658: yymajor = YYNOCODE;
! 659: }else if( yymx!=YYERRORSYMBOL ){
! 660: YYMINORTYPE u2;
! 661: u2.YYERRSYMDT = 0;
! 662: yy_shift(yypParser,yyact,YYERRORSYMBOL,&u2);
! 663: }
! 664: }
! 665: yypParser->yyerrcnt = 3;
! 666: yyerrorhit = 1;
! 667: #else /* YYERRORSYMBOL is not defined */
! 668: /* This is what we do if the grammar does not define ERROR:
! 669: **
! 670: ** * Report an error message, and throw away the input token.
! 671: **
! 672: ** * If the input token is $, then fail the parse.
! 673: **
! 674: ** As before, subsequent error messages are suppressed until
! 675: ** three input tokens have been successfully shifted.
! 676: */
! 677: if( yypParser->yyerrcnt<=0 ){
! 678: yy_syntax_error(yypParser,yymajor,yyminorunion);
! 679: }
! 680: yypParser->yyerrcnt = 3;
! 681: yy_destructor(yymajor,&yyminorunion);
! 682: if( yyendofinput ){
! 683: yy_parse_failed(yypParser);
! 684: }
! 685: yymajor = YYNOCODE;
! 686: #endif
! 687: }else{
! 688: yy_accept(yypParser);
! 689: yymajor = YYNOCODE;
! 690: }
! 691: }while( yymajor!=YYNOCODE && yypParser->yyidx>=0 );
! 692: return;
! 693: }
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