intl/plural.c

   1 /* A Bison parser, made by GNU Bison 2.7.  */
   2
   3 /* Bison implementation for Yacc-like parsers in C
   4
   5       Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation, Inc.
   6
   7    This program is free software: you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation, either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* As a special exception, you may create a larger work that contains
  21    part or all of the Bison parser skeleton and distribute that work
  22    under terms of your choice, so long as that work isn't itself a
  23    parser generator using the skeleton or a modified version thereof
  24    as a parser skeleton.  Alternatively, if you modify or redistribute
  25    the parser skeleton itself, you may (at your option) remove this
  26    special exception, which will cause the skeleton and the resulting
  27    Bison output files to be licensed under the GNU General Public
  28    License without this special exception.
  29
  30    This special exception was added by the Free Software Foundation in
  31    version 2.2 of Bison.  */
  32
  33 /* C LALR(1) parser skeleton written by Richard Stallman, by
  34    simplifying the original so-called "semantic" parser.  */
  35
  36 /* All symbols defined below should begin with yy or YY, to avoid
  37    infringing on user name space.  This should be done even for local
  38    variables, as they might otherwise be expanded by user macros.
  39    There are some unavoidable exceptions within include files to
  40    define necessary library symbols; they are noted "INFRINGES ON
  41    USER NAME SPACE" below.  */
  42
  43 /* Identify Bison output.  */
  44 #define YYBISON 1
  45
  46 /* Bison version.  */
  47 #define YYBISON_VERSION "2.7"
  48
  49 /* Skeleton name.  */
  50 #define YYSKELETON_NAME "yacc.c"
  51
  52 /* Pure parsers.  */
  53 #define YYPURE 1
  54
  55 /* Push parsers.  */
  56 #define YYPUSH 0
  57
  58 /* Pull parsers.  */
  59 #define YYPULL 1
  60
  61
  62 /* Substitute the variable and function names.  */
  63 #define yyparse         __gettextparse
  64 #define yylex           __gettextlex
  65 #define yyerror         __gettexterror
  66 #define yylval          __gettextlval
  67 #define yychar          __gettextchar
  68 #define yydebug         __gettextdebug
  69 #define yynerrs         __gettextnerrs
  70
  71 /* Copy the first part of user declarations.  */
  72 /* Line 371 of yacc.c  */
  73 #line 1 "plural.y"
  74
  75 /* Expression parsing for plural form selection.
  76    Copyright (C) 2000-2014 Free Software Foundation, Inc.
  77    This file is part of the GNU C Library.
  78    Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
  79
  80    The GNU C Library is free software; you can redistribute it and/or
  81    modify it under the terms of the GNU Lesser General Public
  82    License as published by the Free Software Foundation; either
  83    version 2.1 of the License, or (at your option) any later version.
  84
  85    The GNU C Library is distributed in the hope that it will be useful,
  86    but WITHOUT ANY WARRANTY; without even the implied warranty of
  87    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  88    Lesser General Public License for more details.
  89
  90    You should have received a copy of the GNU Lesser General Public
  91    License along with the GNU C Library; if not, see
  92    <http://www.gnu.org/licenses/>.  */
  93
  94 /* The bison generated parser uses alloca.  AIX 3 forces us to put this
  95    declaration at the beginning of the file.  The declaration in bison's
  96    skeleton file comes too late.  This must come before <config.h>
  97    because <config.h> may include arbitrary system headers.  */
  98 #if defined _AIX && !defined __GNUC__
  99  #pragma alloca
 100 #endif
 101 #ifdef HAVE_CONFIG_H
 102 # include <config.h>
 103 #endif
 104
 105 #include <stddef.h>
 106 #include <stdlib.h>
 107 #include <string.h>
 108 #include "plural-exp.h"
 109
 110 /* The main function generated by the parser is called __gettextparse,
 111    but we want it to be called PLURAL_PARSE.  */
 112 #ifndef _LIBC
 113 # define __gettextparse PLURAL_PARSE
 114 #endif
 115
 116 #define YYLEX_PARAM     &((struct parse_args *) arg)->cp
 117 #define YYPARSE_PARAM   arg
 118
 119 /* Line 371 of yacc.c  */
 120 #line 121 "plural.c"
 121
 122 # ifndef YY_NULL
 123 #  if defined __cplusplus && 201103L <= __cplusplus
 124 #   define YY_NULL nullptr
 125 #  else
 126 #   define YY_NULL 0
 127 #  endif
 128 # endif
 129
 130 /* Enabling verbose error messages.  */
 131 #ifdef YYERROR_VERBOSE
 132 # undef YYERROR_VERBOSE
 133 # define YYERROR_VERBOSE 1
 134 #else
 135 # define YYERROR_VERBOSE 0
 136 #endif
 137
 138
 139 /* Enabling traces.  */
 140 #ifndef YYDEBUG
 141 # define YYDEBUG 0
 142 #endif
 143 #if YYDEBUG
 144 extern int __gettextdebug;
 145 #endif
 146
 147 /* Tokens.  */
 148 #ifndef YYTOKENTYPE
 149 # define YYTOKENTYPE
 150    /* Put the tokens into the symbol table, so that GDB and other debuggers
 151       know about them.  */
 152    enum yytokentype {
 153      EQUOP2 = 258,
 154      CMPOP2 = 259,
 155      ADDOP2 = 260,
 156      MULOP2 = 261,
 157      NUMBER = 262
 158    };
 159 #endif
 160 /* Tokens.  */
 161 #define EQUOP2 258
 162 #define CMPOP2 259
 163 #define ADDOP2 260
 164 #define MULOP2 261
 165 #define NUMBER 262
 166
 167
 168
 169 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
 170 typedef union YYSTYPE
 171 {
 172 /* Line 387 of yacc.c  */
 173 #line 49 "plural.y"
 174
 175   unsigned long int num;
 176   enum operator op;
 177   struct expression *exp;
 178
 179
 180 /* Line 387 of yacc.c  */
 181 #line 182 "plural.c"
 182 } YYSTYPE;
 183 # define YYSTYPE_IS_TRIVIAL 1
 184 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
 185 # define YYSTYPE_IS_DECLARED 1
 186 #endif
 187
 188
 189 #ifdef YYPARSE_PARAM
 190 #if defined __STDC__ || defined __cplusplus
 191 int __gettextparse (void *YYPARSE_PARAM);
 192 #else
 193 int __gettextparse ();
 194 #endif
 195 #else /* ! YYPARSE_PARAM */
 196 #if defined __STDC__ || defined __cplusplus
 197 int __gettextparse (void);
 198 #else
 199 int __gettextparse ();
 200 #endif
 201 #endif /* ! YYPARSE_PARAM */
 202
 203
 204
 205 /* Copy the second part of user declarations.  */
 206 /* Line 390 of yacc.c  */
 207 #line 55 "plural.y"
 208
 209 /* Prototypes for local functions.  */
 210 static struct expression *new_exp PARAMS ((int nargs, enum operator op,
 211                                            struct expression * const *args));
 212 static inline struct expression *new_exp_0 PARAMS ((enum operator op));
 213 static inline struct expression *new_exp_1 PARAMS ((enum operator op,
 214                                                    struct expression *right));
 215 static struct expression *new_exp_2 PARAMS ((enum operator op,
 216                                              struct expression *left,
 217                                              struct expression *right));
 218 static inline struct expression *new_exp_3 PARAMS ((enum operator op,
 219                                                    struct expression *bexp,
 220                                                    struct expression *tbranch,
 221                                                    struct expression *fbranch));
 222 static int yylex PARAMS ((YYSTYPE *lval, const char **pexp));
 223 static void yyerror PARAMS ((const char *str));
 224
 225 /* Allocation of expressions.  */
 226
 227 static struct expression *
 228 new_exp (nargs, op, args)
 229      int nargs;
 230      enum operator op;
 231      struct expression * const *args;
 232 {
 233   int i;
 234   struct expression *newp;
 235
 236   /* If any of the argument could not be malloc'ed, just return NULL.  */
 237   for (i = nargs - 1; i >= 0; i--)
 238     if (args[i] == NULL)
 239       goto fail;
 240
 241   /* Allocate a new expression.  */
 242   newp = (struct expression *) malloc (sizeof (*newp));
 243   if (newp != NULL)
 244     {
 245       newp->nargs = nargs;
 246       newp->operation = op;
 247       for (i = nargs - 1; i >= 0; i--)
 248         newp->val.args[i] = args[i];
 249       return newp;
 250     }
 251
 252  fail:
 253   for (i = nargs - 1; i >= 0; i--)
 254     FREE_EXPRESSION (args[i]);
 255
 256   return NULL;
 257 }
 258
 259 static inline struct expression *
 260 new_exp_0 (op)
 261      enum operator op;
 262 {
 263   return new_exp (0, op, NULL);
 264 }
 265
 266 static inline struct expression *
 267 new_exp_1 (op, right)
 268      enum operator op;
 269      struct expression *right;
 270 {
 271   struct expression *args[1];
 272
 273   args[0] = right;
 274   return new_exp (1, op, args);
 275 }
 276
 277 static struct expression *
 278 new_exp_2 (op, left, right)
 279      enum operator op;
 280      struct expression *left;
 281      struct expression *right;
 282 {
 283   struct expression *args[2];
 284
 285   args[0] = left;
 286   args[1] = right;
 287   return new_exp (2, op, args);
 288 }
 289
 290 static inline struct expression *
 291 new_exp_3 (op, bexp, tbranch, fbranch)
 292      enum operator op;
 293      struct expression *bexp;
 294      struct expression *tbranch;
 295      struct expression *fbranch;
 296 {
 297   struct expression *args[3];
 298
 299   args[0] = bexp;
 300   args[1] = tbranch;
 301   args[2] = fbranch;
 302   return new_exp (3, op, args);
 303 }
 304
 305
 306 /* Line 390 of yacc.c  */
 307 #line 308 "plural.c"
 308
 309 #ifdef short
 310 # undef short
 311 #endif
 312
 313 #ifdef YYTYPE_UINT8
 314 typedef YYTYPE_UINT8 yytype_uint8;
 315 #else
 316 typedef unsigned char yytype_uint8;
 317 #endif
 318
 319 #ifdef YYTYPE_INT8
 320 typedef YYTYPE_INT8 yytype_int8;
 321 #elif (defined __STDC__ || defined __C99__FUNC__ \
 322      || defined __cplusplus || defined _MSC_VER)
 323 typedef signed char yytype_int8;
 324 #else
 325 typedef short int yytype_int8;
 326 #endif
 327
 328 #ifdef YYTYPE_UINT16
 329 typedef YYTYPE_UINT16 yytype_uint16;
 330 #else
 331 typedef unsigned short int yytype_uint16;
 332 #endif
 333
 334 #ifdef YYTYPE_INT16
 335 typedef YYTYPE_INT16 yytype_int16;
 336 #else
 337 typedef short int yytype_int16;
 338 #endif
 339
 340 #ifndef YYSIZE_T
 341 # ifdef __SIZE_TYPE__
 342 #  define YYSIZE_T __SIZE_TYPE__
 343 # elif defined size_t
 344 #  define YYSIZE_T size_t
 345 # elif ! defined YYSIZE_T && (defined __STDC__ || defined __C99__FUNC__ \
 346      || defined __cplusplus || defined _MSC_VER)
 347 #  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
 348 #  define YYSIZE_T size_t
 349 # else
 350 #  define YYSIZE_T unsigned int
 351 # endif
 352 #endif
 353
 354 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
 355
 356 #ifndef YY_
 357 # if defined YYENABLE_NLS && YYENABLE_NLS
 358 #  if ENABLE_NLS
 359 #   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
 360 #   define YY_(Msgid) dgettext ("bison-runtime", Msgid)
 361 #  endif
 362 # endif
 363 # ifndef YY_
 364 #  define YY_(Msgid) Msgid
 365 # endif
 366 #endif
 367
 368 /* Suppress unused-variable warnings by "using" E.  */
 369 #if ! defined lint || defined __GNUC__
 370 # define YYUSE(E) ((void) (E))
 371 #else
 372 # define YYUSE(E) /* empty */
 373 #endif
 374
 375 /* Identity function, used to suppress warnings about constant conditions.  */
 376 #ifndef lint
 377 # define YYID(N) (N)
 378 #else
 379 #if (defined __STDC__ || defined __C99__FUNC__ \
 380      || defined __cplusplus || defined _MSC_VER)
 381 static int
 382 YYID (int yyi)
 383 #else
 384 static int
 385 YYID (yyi)
 386     int yyi;
 387 #endif
 388 {
 389   return yyi;
 390 }
 391 #endif
 392
 393 #if ! defined yyoverflow || YYERROR_VERBOSE
 394
 395 /* The parser invokes alloca or malloc; define the necessary symbols.  */
 396
 397 # ifdef YYSTACK_USE_ALLOCA
 398 #  if YYSTACK_USE_ALLOCA
 399 #   ifdef __GNUC__
 400 #    define YYSTACK_ALLOC __builtin_alloca
 401 #   elif defined __BUILTIN_VA_ARG_INCR
 402 #    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
 403 #   elif defined _AIX
 404 #    define YYSTACK_ALLOC __alloca
 405 #   elif defined _MSC_VER
 406 #    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
 407 #    define alloca _alloca
 408 #   else
 409 #    define YYSTACK_ALLOC alloca
 410 #    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \
 411      || defined __cplusplus || defined _MSC_VER)
 412 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 413       /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
 414 #     ifndef EXIT_SUCCESS
 415 #      define EXIT_SUCCESS 0
 416 #     endif
 417 #    endif
 418 #   endif
 419 #  endif
 420 # endif
 421
 422 # ifdef YYSTACK_ALLOC
 423    /* Pacify GCC's `empty if-body' warning.  */
 424 #  define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
 425 #  ifndef YYSTACK_ALLOC_MAXIMUM
 426     /* The OS might guarantee only one guard page at the bottom of the stack,
 427        and a page size can be as small as 4096 bytes.  So we cannot safely
 428        invoke alloca (N) if N exceeds 4096.  Use a slightly smaller number
 429        to allow for a few compiler-allocated temporary stack slots.  */
 430 #   define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
 431 #  endif
 432 # else
 433 #  define YYSTACK_ALLOC YYMALLOC
 434 #  define YYSTACK_FREE YYFREE
 435 #  ifndef YYSTACK_ALLOC_MAXIMUM
 436 #   define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
 437 #  endif
 438 #  if (defined __cplusplus && ! defined EXIT_SUCCESS \
 439        && ! ((defined YYMALLOC || defined malloc) \
 440              && (defined YYFREE || defined free)))
 441 #   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 442 #   ifndef EXIT_SUCCESS
 443 #    define EXIT_SUCCESS 0
 444 #   endif
 445 #  endif
 446 #  ifndef YYMALLOC
 447 #   define YYMALLOC malloc
 448 #   if ! defined malloc && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \
 449      || defined __cplusplus || defined _MSC_VER)
 450 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
 451 #   endif
 452 #  endif
 453 #  ifndef YYFREE
 454 #   define YYFREE free
 455 #   if ! defined free && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \
 456      || defined __cplusplus || defined _MSC_VER)
 457 void free (void *); /* INFRINGES ON USER NAME SPACE */
 458 #   endif
 459 #  endif
 460 # endif
 461 #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
 462
 463
 464 #if (! defined yyoverflow \
 465      && (! defined __cplusplus \
 466          || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
 467
 468 /* A type that is properly aligned for any stack member.  */
 469 union yyalloc
 470 {
 471   yytype_int16 yyss_alloc;
 472   YYSTYPE yyvs_alloc;
 473 };
 474
 475 /* The size of the maximum gap between one aligned stack and the next.  */
 476 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
 477
 478 /* The size of an array large to enough to hold all stacks, each with
 479    N elements.  */
 480 # define YYSTACK_BYTES(N) \
 481      ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
 482       + YYSTACK_GAP_MAXIMUM)
 483
 484 # define YYCOPY_NEEDED 1
 485
 486 /* Relocate STACK from its old location to the new one.  The
 487    local variables YYSIZE and YYSTACKSIZE give the old and new number of
 488    elements in the stack, and YYPTR gives the new location of the
 489    stack.  Advance YYPTR to a properly aligned location for the next
 490    stack.  */
 491 # define YYSTACK_RELOCATE(Stack_alloc, Stack)                           \
 492     do                                                                  \
 493       {                                                                 \
 494         YYSIZE_T yynewbytes;                                            \
 495         YYCOPY (&yyptr->Stack_alloc, Stack, yysize);                    \
 496         Stack = &yyptr->Stack_alloc;                                    \
 497         yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
 498         yyptr += yynewbytes / sizeof (*yyptr);                          \
 499       }                                                                 \
 500     while (YYID (0))
 501
 502 #endif
 503
 504 #if defined YYCOPY_NEEDED && YYCOPY_NEEDED
 505 /* Copy COUNT objects from SRC to DST.  The source and destination do
 506    not overlap.  */
 507 # ifndef YYCOPY
 508 #  if defined __GNUC__ && 1 < __GNUC__
 509 #   define YYCOPY(Dst, Src, Count) \
 510       __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
 511 #  else
 512 #   define YYCOPY(Dst, Src, Count)              \
 513       do                                        \
 514         {                                       \
 515           YYSIZE_T yyi;                         \
 516           for (yyi = 0; yyi < (Count); yyi++)   \
 517             (Dst)[yyi] = (Src)[yyi];            \
 518         }                                       \
 519       while (YYID (0))
 520 #  endif
 521 # endif
 522 #endif /* !YYCOPY_NEEDED */
 523
 524 /* YYFINAL -- State number of the termination state.  */
 525 #define YYFINAL  9
 526 /* YYLAST -- Last index in YYTABLE.  */
 527 #define YYLAST   54
 528
 529 /* YYNTOKENS -- Number of terminals.  */
 530 #define YYNTOKENS  16
 531 /* YYNNTS -- Number of nonterminals.  */
 532 #define YYNNTS  3
 533 /* YYNRULES -- Number of rules.  */
 534 #define YYNRULES  13
 535 /* YYNRULES -- Number of states.  */
 536 #define YYNSTATES  27
 537
 538 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
 539 #define YYUNDEFTOK  2
 540 #define YYMAXUTOK   262
 541
 542 #define YYTRANSLATE(YYX)                                                \
 543   ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
 544
 545 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
 546 static const yytype_uint8 yytranslate[] =
 547 {
 548        0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 549        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 550        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 551        2,     2,     2,    10,     2,     2,     2,     2,     5,     2,
 552       14,    15,     2,     2,     2,     2,     2,     2,     2,     2,
 553        2,     2,     2,     2,     2,     2,     2,     2,    12,     2,
 554        2,     2,     2,     3,     2,     2,     2,     2,     2,     2,
 555        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 556        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 557        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 558        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 559       13,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 560        2,     2,     2,     2,     4,     2,     2,     2,     2,     2,
 561        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 562        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 563        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 564        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 565        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 566        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 567        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 568        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 569        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 570        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 571        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 572        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
 573        2,     2,     2,     2,     2,     2,     1,     2,     6,     7,
 574        8,     9,    11
 575 };
 576
 577 #if YYDEBUG
 578 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
 579    YYRHS.  */
 580 static const yytype_uint8 yyprhs[] =
 581 {
 582        0,     0,     3,     5,    11,    15,    19,    23,    27,    31,
 583       35,    38,    40,    42
 584 };
 585
 586 /* YYRHS -- A `-1'-separated list of the rules' RHS.  */
 587 static const yytype_int8 yyrhs[] =
 588 {
 589       17,     0,    -1,    18,    -1,    18,     3,    18,    12,    18,
 590       -1,    18,     4,    18,    -1,    18,     5,    18,    -1,    18,
 591        6,    18,    -1,    18,     7,    18,    -1,    18,     8,    18,
 592       -1,    18,     9,    18,    -1,    10,    18,    -1,    13,    -1,
 593       11,    -1,    14,    18,    15,    -1
 594 };
 595
 596 /* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
 597 static const yytype_uint8 yyrline[] =
 598 {
 599        0,   174,   174,   182,   186,   190,   194,   198,   202,   206,
 600      210,   214,   218,   223
 601 };
 602 #endif
 603
 604 #if YYDEBUG || YYERROR_VERBOSE || 0
 605 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
 606    First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
 607 static const char *const yytname[] =
 608 {
 609   "$end", "error", "$undefined", "'?'", "'|'", "'&'", "EQUOP2", "CMPOP2",
 610   "ADDOP2", "MULOP2", "'!'", "NUMBER", "':'", "'n'", "'('", "')'",
 611   "$accept", "start", "exp", YY_NULL
 612 };
 613 #endif
 614
 615 # ifdef YYPRINT
 616 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
 617    token YYLEX-NUM.  */
 618 static const yytype_uint16 yytoknum[] =
 619 {
 620        0,   256,   257,    63,   124,    38,   258,   259,   260,   261,
 621       33,   262,    58,   110,    40,    41
 622 };
 623 # endif
 624
 625 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
 626 static const yytype_uint8 yyr1[] =
 627 {
 628        0,    16,    17,    18,    18,    18,    18,    18,    18,    18,
 629       18,    18,    18,    18
 630 };
 631
 632 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
 633 static const yytype_uint8 yyr2[] =
 634 {
 635        0,     2,     1,     5,     3,     3,     3,     3,     3,     3,
 636        2,     1,     1,     3
 637 };
 638
 639 /* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM.
 640    Performed when YYTABLE doesn't specify something else to do.  Zero
 641    means the default is an error.  */
 642 static const yytype_uint8 yydefact[] =
 643 {
 644        0,     0,    12,    11,     0,     0,     2,    10,     0,     1,
 645        0,     0,     0,     0,     0,     0,     0,    13,     0,     4,
 646        5,     6,     7,     8,     9,     0,     3
 647 };
 648
 649 /* YYDEFGOTO[NTERM-NUM].  */
 650 static const yytype_int8 yydefgoto[] =
 651 {
 652       -1,     5,     6
 653 };
 654
 655 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
 656    STATE-NUM.  */
 657 #define YYPACT_NINF -10
 658 static const yytype_int8 yypact[] =
 659 {
 660       -9,    -9,   -10,   -10,    -9,     8,    36,   -10,    13,   -10,
 661       -9,    -9,    -9,    -9,    -9,    -9,    -9,   -10,    26,    41,
 662       45,    18,    -2,    14,   -10,    -9,    36
 663 };
 664
 665 /* YYPGOTO[NTERM-NUM].  */
 666 static const yytype_int8 yypgoto[] =
 667 {
 668      -10,   -10,    -1
 669 };
 670
 671 /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
 672    positive, shift that token.  If negative, reduce the rule which
 673    number is the opposite.  If YYTABLE_NINF, syntax error.  */
 674 #define YYTABLE_NINF -1
 675 static const yytype_uint8 yytable[] =
 676 {
 677        7,     1,     2,     8,     3,     4,    15,    16,     9,    18,
 678       19,    20,    21,    22,    23,    24,    10,    11,    12,    13,
 679       14,    15,    16,    16,    26,    14,    15,    16,    17,    10,
 680       11,    12,    13,    14,    15,    16,     0,     0,    25,    10,
 681       11,    12,    13,    14,    15,    16,    12,    13,    14,    15,
 682       16,    13,    14,    15,    16
 683 };
 684
 685 #define yypact_value_is_default(Yystate) \
 686   (!!((Yystate) == (-10)))
 687
 688 #define yytable_value_is_error(Yytable_value) \
 689   YYID (0)
 690
 691 static const yytype_int8 yycheck[] =
 692 {
 693        1,    10,    11,     4,    13,    14,     8,     9,     0,    10,
 694       11,    12,    13,    14,    15,    16,     3,     4,     5,     6,
 695        7,     8,     9,     9,    25,     7,     8,     9,    15,     3,
 696        4,     5,     6,     7,     8,     9,    -1,    -1,    12,     3,
 697        4,     5,     6,     7,     8,     9,     5,     6,     7,     8,
 698        9,     6,     7,     8,     9
 699 };
 700
 701 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
 702    symbol of state STATE-NUM.  */
 703 static const yytype_uint8 yystos[] =
 704 {
 705        0,    10,    11,    13,    14,    17,    18,    18,    18,     0,
 706        3,     4,     5,     6,     7,     8,     9,    15,    18,    18,
 707       18,    18,    18,    18,    18,    12,    18
 708 };
 709
 710 #define yyerrok         (yyerrstatus = 0)
 711 #define yyclearin       (yychar = YYEMPTY)
 712 #define YYEMPTY         (-2)
 713 #define YYEOF           0
 714
 715 #define YYACCEPT        goto yyacceptlab
 716 #define YYABORT         goto yyabortlab
 717 #define YYERROR         goto yyerrorlab
 718
 719
 720 /* Like YYERROR except do call yyerror.  This remains here temporarily
 721    to ease the transition to the new meaning of YYERROR, for GCC.
 722    Once GCC version 2 has supplanted version 1, this can go.  However,
 723    YYFAIL appears to be in use.  Nevertheless, it is formally deprecated
 724    in Bison 2.4.2's NEWS entry, where a plan to phase it out is
 725    discussed.  */
 726
 727 #define YYFAIL          goto yyerrlab
 728 #if defined YYFAIL
 729   /* This is here to suppress warnings from the GCC cpp's
 730      -Wunused-macros.  Normally we don't worry about that warning, but
 731      some users do, and we want to make it easy for users to remove
 732      YYFAIL uses, which will produce warnings from Bison 2.5.  */
 733 #endif
 734
 735 #define YYRECOVERING()  (!!yyerrstatus)
 736
 737 #define YYBACKUP(Token, Value)                                  \
 738 do                                                              \
 739   if (yychar == YYEMPTY)                                        \
 740     {                                                           \
 741       yychar = (Token);                                         \
 742       yylval = (Value);                                         \
 743       YYPOPSTACK (yylen);                                       \
 744       yystate = *yyssp;                                         \
 745       goto yybackup;                                            \
 746     }                                                           \
 747   else                                                          \
 748     {                                                           \
 749       yyerror (YY_("syntax error: cannot back up")); \
 750       YYERROR;                                                  \
 751     }                                                           \
 752 while (YYID (0))
 753
 754 /* Error token number */
 755 #define YYTERROR        1
 756 #define YYERRCODE       256
 757
 758
 759 /* This macro is provided for backward compatibility. */
 760 #ifndef YY_LOCATION_PRINT
 761 # define YY_LOCATION_PRINT(File, Loc) ((void) 0)
 762 #endif
 763
 764
 765 /* YYLEX -- calling `yylex' with the right arguments.  */
 766 #ifdef YYLEX_PARAM
 767 # define YYLEX yylex (&yylval, YYLEX_PARAM)
 768 #else
 769 # define YYLEX yylex (&yylval)
 770 #endif
 771
 772 /* Enable debugging if requested.  */
 773 #if YYDEBUG
 774
 775 # ifndef YYFPRINTF
 776 #  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
 777 #  define YYFPRINTF fprintf
 778 # endif
 779
 780 # define YYDPRINTF(Args)                        \
 781 do {                                            \
 782   if (yydebug)                                  \
 783     YYFPRINTF Args;                             \
 784 } while (YYID (0))
 785
 786 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
 787 do {                                                                      \
 788   if (yydebug)                                                            \
 789     {                                                                     \
 790       YYFPRINTF (stderr, "%s ", Title);                                   \
 791       yy_symbol_print (stderr,                                            \
 792                   Type, Value); \
 793       YYFPRINTF (stderr, "\n");                                           \
 794     }                                                                     \
 795 } while (YYID (0))
 796
 797
 798 /*--------------------------------.
 799 | Print this symbol on YYOUTPUT.  |
 800 `--------------------------------*/
 801
 802 /*ARGSUSED*/
 803 #if (defined __STDC__ || defined __C99__FUNC__ \
 804      || defined __cplusplus || defined _MSC_VER)
 805 static void
 806 yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
 807 #else
 808 static void
 809 yy_symbol_value_print (yyoutput, yytype, yyvaluep)
 810     FILE *yyoutput;
 811     int yytype;
 812     YYSTYPE const * const yyvaluep;
 813 #endif
 814 {
 815   FILE *yyo = yyoutput;
 816   YYUSE (yyo);
 817   if (!yyvaluep)
 818     return;
 819 # ifdef YYPRINT
 820   if (yytype < YYNTOKENS)
 821     YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
 822 # else
 823   YYUSE (yyoutput);
 824 # endif
 825   switch (yytype)
 826     {
 827       default:
 828         break;
 829     }
 830 }
 831
 832
 833 /*--------------------------------.
 834 | Print this symbol on YYOUTPUT.  |
 835 `--------------------------------*/
 836
 837 #if (defined __STDC__ || defined __C99__FUNC__ \
 838      || defined __cplusplus || defined _MSC_VER)
 839 static void
 840 yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep)
 841 #else
 842 static void
 843 yy_symbol_print (yyoutput, yytype, yyvaluep)
 844     FILE *yyoutput;
 845     int yytype;
 846     YYSTYPE const * const yyvaluep;
 847 #endif
 848 {
 849   if (yytype < YYNTOKENS)
 850     YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
 851   else
 852     YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
 853
 854   yy_symbol_value_print (yyoutput, yytype, yyvaluep);
 855   YYFPRINTF (yyoutput, ")");
 856 }
 857
 858 /*------------------------------------------------------------------.
 859 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
 860 | TOP (included).                                                   |
 861 `------------------------------------------------------------------*/
 862
 863 #if (defined __STDC__ || defined __C99__FUNC__ \
 864      || defined __cplusplus || defined _MSC_VER)
 865 static void
 866 yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop)
 867 #else
 868 static void
 869 yy_stack_print (yybottom, yytop)
 870     yytype_int16 *yybottom;
 871     yytype_int16 *yytop;
 872 #endif
 873 {
 874   YYFPRINTF (stderr, "Stack now");
 875   for (; yybottom <= yytop; yybottom++)
 876     {
 877       int yybot = *yybottom;
 878       YYFPRINTF (stderr, " %d", yybot);
 879     }
 880   YYFPRINTF (stderr, "\n");
 881 }
 882
 883 # define YY_STACK_PRINT(Bottom, Top)                            \
 884 do {                                                            \
 885   if (yydebug)                                                  \
 886     yy_stack_print ((Bottom), (Top));                           \
 887 } while (YYID (0))
 888
 889
 890 /*------------------------------------------------.
 891 | Report that the YYRULE is going to be reduced.  |
 892 `------------------------------------------------*/
 893
 894 #if (defined __STDC__ || defined __C99__FUNC__ \
 895      || defined __cplusplus || defined _MSC_VER)
 896 static void
 897 yy_reduce_print (YYSTYPE *yyvsp, int yyrule)
 898 #else
 899 static void
 900 yy_reduce_print (yyvsp, yyrule)
 901     YYSTYPE *yyvsp;
 902     int yyrule;
 903 #endif
 904 {
 905   int yynrhs = yyr2[yyrule];
 906   int yyi;
 907   unsigned long int yylno = yyrline[yyrule];
 908   YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
 909              yyrule - 1, yylno);
 910   /* The symbols being reduced.  */
 911   for (yyi = 0; yyi < yynrhs; yyi++)
 912     {
 913       YYFPRINTF (stderr, "   $%d = ", yyi + 1);
 914       yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
 915                        &(yyvsp[(yyi + 1) - (yynrhs)])
 916                                        );
 917       YYFPRINTF (stderr, "\n");
 918     }
 919 }
 920
 921 # define YY_REDUCE_PRINT(Rule)          \
 922 do {                                    \
 923   if (yydebug)                          \
 924     yy_reduce_print (yyvsp, Rule); \
 925 } while (YYID (0))
 926
 927 /* Nonzero means print parse trace.  It is left uninitialized so that
 928    multiple parsers can coexist.  */
 929 int yydebug;
 930 #else /* !YYDEBUG */
 931 # define YYDPRINTF(Args)
 932 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
 933 # define YY_STACK_PRINT(Bottom, Top)
 934 # define YY_REDUCE_PRINT(Rule)
 935 #endif /* !YYDEBUG */
 936
 937
 938 /* YYINITDEPTH -- initial size of the parser's stacks.  */
 939 #ifndef YYINITDEPTH
 940 # define YYINITDEPTH 200
 941 #endif
 942
 943 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
 944    if the built-in stack extension method is used).
 945
 946    Do not make this value too large; the results are undefined if
 947    YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
 948    evaluated with infinite-precision integer arithmetic.  */
 949
 950 #ifndef YYMAXDEPTH
 951 # define YYMAXDEPTH 10000
 952 #endif
 953
 954
 955 #if YYERROR_VERBOSE
 956
 957 # ifndef yystrlen
 958 #  if defined __GLIBC__ && defined _STRING_H
 959 #   define yystrlen strlen
 960 #  else
 961 /* Return the length of YYSTR.  */
 962 #if (defined __STDC__ || defined __C99__FUNC__ \
 963      || defined __cplusplus || defined _MSC_VER)
 964 static YYSIZE_T
 965 yystrlen (const char *yystr)
 966 #else
 967 static YYSIZE_T
 968 yystrlen (yystr)
 969     const char *yystr;
 970 #endif
 971 {
 972   YYSIZE_T yylen;
 973   for (yylen = 0; yystr[yylen]; yylen++)
 974     continue;
 975   return yylen;
 976 }
 977 #  endif
 978 # endif
 979
 980 # ifndef yystpcpy
 981 #  if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
 982 #   define yystpcpy stpcpy
 983 #  else
 984 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
 985    YYDEST.  */
 986 #if (defined __STDC__ || defined __C99__FUNC__ \
 987      || defined __cplusplus || defined _MSC_VER)
 988 static char *
 989 yystpcpy (char *yydest, const char *yysrc)
 990 #else
 991 static char *
 992 yystpcpy (yydest, yysrc)
 993     char *yydest;
 994     const char *yysrc;
 995 #endif
 996 {
 997   char *yyd = yydest;
 998   const char *yys = yysrc;
 999
1000   while ((*yyd++ = *yys++) != '\0')
1001     continue;
1002
1003   return yyd - 1;
1004 }
1005 #  endif
1006 # endif
1007
1008 # ifndef yytnamerr
1009 /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
1010    quotes and backslashes, so that it's suitable for yyerror.  The
1011    heuristic is that double-quoting is unnecessary unless the string
1012    contains an apostrophe, a comma, or backslash (other than
1013    backslash-backslash).  YYSTR is taken from yytname.  If YYRES is
1014    null, do not copy; instead, return the length of what the result
1015    would have been.  */
1016 static YYSIZE_T
1017 yytnamerr (char *yyres, const char *yystr)
1018 {
1019   if (*yystr == '"')
1020     {
1021       YYSIZE_T yyn = 0;
1022       char const *yyp = yystr;
1023
1024       for (;;)
1025         switch (*++yyp)
1026           {
1027           case '\'':
1028           case ',':
1029             goto do_not_strip_quotes;
1030
1031           case '\\':
1032             if (*++yyp != '\\')
1033               goto do_not_strip_quotes;
1034             /* Fall through.  */
1035           default:
1036             if (yyres)
1037               yyres[yyn] = *yyp;
1038             yyn++;
1039             break;
1040
1041           case '"':
1042             if (yyres)
1043               yyres[yyn] = '\0';
1044             return yyn;
1045           }
1046     do_not_strip_quotes: ;
1047     }
1048
1049   if (! yyres)
1050     return yystrlen (yystr);
1051
1052   return yystpcpy (yyres, yystr) - yyres;
1053 }
1054 # endif
1055
1056 /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
1057    about the unexpected token YYTOKEN for the state stack whose top is
1058    YYSSP.
1059
1060    Return 0 if *YYMSG was successfully written.  Return 1 if *YYMSG is
1061    not large enough to hold the message.  In that case, also set
1062    *YYMSG_ALLOC to the required number of bytes.  Return 2 if the
1063    required number of bytes is too large to store.  */
1064 static int
1065 yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
1066                 yytype_int16 *yyssp, int yytoken)
1067 {
1068   YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
1069   YYSIZE_T yysize = yysize0;
1070   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
1071   /* Internationalized format string. */
1072   const char *yyformat = YY_NULL;
1073   /* Arguments of yyformat. */
1074   char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
1075   /* Number of reported tokens (one for the "unexpected", one per
1076      "expected"). */
1077   int yycount = 0;
1078
1079   /* There are many possibilities here to consider:
1080      - Assume YYFAIL is not used.  It's too flawed to consider.  See
1081        <http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html>
1082        for details.  YYERROR is fine as it does not invoke this
1083        function.
1084      - If this state is a consistent state with a default action, then
1085        the only way this function was invoked is if the default action
1086        is an error action.  In that case, don't check for expected
1087        tokens because there are none.
1088      - The only way there can be no lookahead present (in yychar) is if
1089        this state is a consistent state with a default action.  Thus,
1090        detecting the absence of a lookahead is sufficient to determine
1091        that there is no unexpected or expected token to report.  In that
1092        case, just report a simple "syntax error".
1093      - Don't assume there isn't a lookahead just because this state is a
1094        consistent state with a default action.  There might have been a
1095        previous inconsistent state, consistent state with a non-default
1096        action, or user semantic action that manipulated yychar.
1097      - Of course, the expected token list depends on states to have
1098        correct lookahead information, and it depends on the parser not
1099        to perform extra reductions after fetching a lookahead from the
1100        scanner and before detecting a syntax error.  Thus, state merging
1101        (from LALR or IELR) and default reductions corrupt the expected
1102        token list.  However, the list is correct for canonical LR with
1103        one exception: it will still contain any token that will not be
1104        accepted due to an error action in a later state.
1105   */
1106   if (yytoken != YYEMPTY)
1107     {
1108       int yyn = yypact[*yyssp];
1109       yyarg[yycount++] = yytname[yytoken];
1110       if (!yypact_value_is_default (yyn))
1111         {
1112           /* Start YYX at -YYN if negative to avoid negative indexes in
1113              YYCHECK.  In other words, skip the first -YYN actions for
1114              this state because they are default actions.  */
1115           int yyxbegin = yyn < 0 ? -yyn : 0;
1116           /* Stay within bounds of both yycheck and yytname.  */
1117           int yychecklim = YYLAST - yyn + 1;
1118           int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
1119           int yyx;
1120
1121           for (yyx = yyxbegin; yyx < yyxend; ++yyx)
1122             if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
1123                 && !yytable_value_is_error (yytable[yyx + yyn]))
1124               {
1125                 if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
1126                   {
1127                     yycount = 1;
1128                     yysize = yysize0;
1129                     break;
1130                   }
1131                 yyarg[yycount++] = yytname[yyx];
1132                 {
1133                   YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
1134                   if (! (yysize <= yysize1
1135                          && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1136                     return 2;
1137                   yysize = yysize1;
1138                 }
1139               }
1140         }
1141     }
1142
1143   switch (yycount)
1144     {
1145 # define YYCASE_(N, S)                      \
1146       case N:                               \
1147         yyformat = S;                       \
1148       break
1149       YYCASE_(0, YY_("syntax error"));
1150       YYCASE_(1, YY_("syntax error, unexpected %s"));
1151       YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
1152       YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
1153       YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
1154       YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
1155 # undef YYCASE_
1156     }
1157
1158   {
1159     YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
1160     if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
1161       return 2;
1162     yysize = yysize1;
1163   }
1164
1165   if (*yymsg_alloc < yysize)
1166     {
1167       *yymsg_alloc = 2 * yysize;
1168       if (! (yysize <= *yymsg_alloc
1169              && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
1170         *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
1171       return 1;
1172     }
1173
1174   /* Avoid sprintf, as that infringes on the user's name space.
1175      Don't have undefined behavior even if the translation
1176      produced a string with the wrong number of "%s"s.  */
1177   {
1178     char *yyp = *yymsg;
1179     int yyi = 0;
1180     while ((*yyp = *yyformat) != '\0')
1181       if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
1182         {
1183           yyp += yytnamerr (yyp, yyarg[yyi++]);
1184           yyformat += 2;
1185         }
1186       else
1187         {
1188           yyp++;
1189           yyformat++;
1190         }
1191   }
1192   return 0;
1193 }
1194 #endif /* YYERROR_VERBOSE */
1195
1196 /*-----------------------------------------------.
1197 | Release the memory associated to this symbol.  |
1198 `-----------------------------------------------*/
1199
1200 /*ARGSUSED*/
1201 #if (defined __STDC__ || defined __C99__FUNC__ \
1202      || defined __cplusplus || defined _MSC_VER)
1203 static void
1204 yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep)
1205 #else
1206 static void
1207 yydestruct (yymsg, yytype, yyvaluep)
1208     const char *yymsg;
1209     int yytype;
1210     YYSTYPE *yyvaluep;
1211 #endif
1212 {
1213   YYUSE (yyvaluep);
1214
1215   if (!yymsg)
1216     yymsg = "Deleting";
1217   YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
1218
1219   switch (yytype)
1220     {
1221
1222       default:
1223         break;
1224     }
1225 }
1226
1227
1228
1229
1230 /*----------.
1231 | yyparse.  |
1232 `----------*/
1233
1234 #ifdef YYPARSE_PARAM
1235 #if (defined __STDC__ || defined __C99__FUNC__ \
1236      || defined __cplusplus || defined _MSC_VER)
1237 int
1238 yyparse (void *YYPARSE_PARAM)
1239 #else
1240 int
1241 yyparse (YYPARSE_PARAM)
1242     void *YYPARSE_PARAM;
1243 #endif
1244 #else /* ! YYPARSE_PARAM */
1245 #if (defined __STDC__ || defined __C99__FUNC__ \
1246      || defined __cplusplus || defined _MSC_VER)
1247 int
1248 yyparse (void)
1249 #else
1250 int
1251 yyparse ()
1252
1253 #endif
1254 #endif
1255 {
1256 /* The lookahead symbol.  */
1257 int yychar;
1258
1259
1260 #if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
1261 /* Suppress an incorrect diagnostic about yylval being uninitialized.  */
1262 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
1263     _Pragma ("GCC diagnostic push") \
1264     _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
1265     _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
1266 # define YY_IGNORE_MAYBE_UNINITIALIZED_END \
1267     _Pragma ("GCC diagnostic pop")
1268 #else
1269 /* Default value used for initialization, for pacifying older GCCs
1270    or non-GCC compilers.  */
1271 static YYSTYPE yyval_default;
1272 # define YY_INITIAL_VALUE(Value) = Value
1273 #endif
1274 #ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1275 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1276 # define YY_IGNORE_MAYBE_UNINITIALIZED_END
1277 #endif
1278 #ifndef YY_INITIAL_VALUE
1279 # define YY_INITIAL_VALUE(Value) /* Nothing. */
1280 #endif
1281
1282 /* The semantic value of the lookahead symbol.  */
1283 YYSTYPE yylval YY_INITIAL_VALUE(yyval_default);
1284
1285     /* Number of syntax errors so far.  */
1286     int yynerrs;
1287
1288     int yystate;
1289     /* Number of tokens to shift before error messages enabled.  */
1290     int yyerrstatus;
1291
1292     /* The stacks and their tools:
1293        `yyss': related to states.
1294        `yyvs': related to semantic values.
1295
1296        Refer to the stacks through separate pointers, to allow yyoverflow
1297        to reallocate them elsewhere.  */
1298
1299     /* The state stack.  */
1300     yytype_int16 yyssa[YYINITDEPTH];
1301     yytype_int16 *yyss;
1302     yytype_int16 *yyssp;
1303
1304     /* The semantic value stack.  */
1305     YYSTYPE yyvsa[YYINITDEPTH];
1306     YYSTYPE *yyvs;
1307     YYSTYPE *yyvsp;
1308
1309     YYSIZE_T yystacksize;
1310
1311   int yyn;
1312   int yyresult;
1313   /* Lookahead token as an internal (translated) token number.  */
1314   int yytoken = 0;
1315   /* The variables used to return semantic value and location from the
1316      action routines.  */
1317   YYSTYPE yyval;
1318
1319 #if YYERROR_VERBOSE
1320   /* Buffer for error messages, and its allocated size.  */
1321   char yymsgbuf[128];
1322   char *yymsg = yymsgbuf;
1323   YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
1324 #endif
1325
1326 #define YYPOPSTACK(N)   (yyvsp -= (N), yyssp -= (N))
1327
1328   /* The number of symbols on the RHS of the reduced rule.
1329      Keep to zero when no symbol should be popped.  */
1330   int yylen = 0;
1331
1332   yyssp = yyss = yyssa;
1333   yyvsp = yyvs = yyvsa;
1334   yystacksize = YYINITDEPTH;
1335
1336   YYDPRINTF ((stderr, "Starting parse\n"));
1337
1338   yystate = 0;
1339   yyerrstatus = 0;
1340   yynerrs = 0;
1341   yychar = YYEMPTY; /* Cause a token to be read.  */
1342   goto yysetstate;
1343
1344 /*------------------------------------------------------------.
1345 | yynewstate -- Push a new state, which is found in yystate.  |
1346 `------------------------------------------------------------*/
1347  yynewstate:
1348   /* In all cases, when you get here, the value and location stacks
1349      have just been pushed.  So pushing a state here evens the stacks.  */
1350   yyssp++;
1351
1352  yysetstate:
1353   *yyssp = yystate;
1354
1355   if (yyss + yystacksize - 1 <= yyssp)
1356     {
1357       /* Get the current used size of the three stacks, in elements.  */
1358       YYSIZE_T yysize = yyssp - yyss + 1;
1359
1360 #ifdef yyoverflow
1361       {
1362         /* Give user a chance to reallocate the stack.  Use copies of
1363            these so that the &'s don't force the real ones into
1364            memory.  */
1365         YYSTYPE *yyvs1 = yyvs;
1366         yytype_int16 *yyss1 = yyss;
1367
1368         /* Each stack pointer address is followed by the size of the
1369            data in use in that stack, in bytes.  This used to be a
1370            conditional around just the two extra args, but that might
1371            be undefined if yyoverflow is a macro.  */
1372         yyoverflow (YY_("memory exhausted"),
1373                     &yyss1, yysize * sizeof (*yyssp),
1374                     &yyvs1, yysize * sizeof (*yyvsp),
1375                     &yystacksize);
1376
1377         yyss = yyss1;
1378         yyvs = yyvs1;
1379       }
1380 #else /* no yyoverflow */
1381 # ifndef YYSTACK_RELOCATE
1382       goto yyexhaustedlab;
1383 # else
1384       /* Extend the stack our own way.  */
1385       if (YYMAXDEPTH <= yystacksize)
1386         goto yyexhaustedlab;
1387       yystacksize *= 2;
1388       if (YYMAXDEPTH < yystacksize)
1389         yystacksize = YYMAXDEPTH;
1390
1391       {
1392         yytype_int16 *yyss1 = yyss;
1393         union yyalloc *yyptr =
1394           (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
1395         if (! yyptr)
1396           goto yyexhaustedlab;
1397         YYSTACK_RELOCATE (yyss_alloc, yyss);
1398         YYSTACK_RELOCATE (yyvs_alloc, yyvs);
1399 #  undef YYSTACK_RELOCATE
1400         if (yyss1 != yyssa)
1401           YYSTACK_FREE (yyss1);
1402       }
1403 # endif
1404 #endif /* no yyoverflow */
1405
1406       yyssp = yyss + yysize - 1;
1407       yyvsp = yyvs + yysize - 1;
1408
1409       YYDPRINTF ((stderr, "Stack size increased to %lu\n",
1410                   (unsigned long int) yystacksize));
1411
1412       if (yyss + yystacksize - 1 <= yyssp)
1413         YYABORT;
1414     }
1415
1416   YYDPRINTF ((stderr, "Entering state %d\n", yystate));
1417
1418   if (yystate == YYFINAL)
1419     YYACCEPT;
1420
1421   goto yybackup;
1422
1423 /*-----------.
1424 | yybackup.  |
1425 `-----------*/
1426 yybackup:
1427
1428   /* Do appropriate processing given the current state.  Read a
1429      lookahead token if we need one and don't already have one.  */
1430
1431   /* First try to decide what to do without reference to lookahead token.  */
1432   yyn = yypact[yystate];
1433   if (yypact_value_is_default (yyn))
1434     goto yydefault;
1435
1436   /* Not known => get a lookahead token if don't already have one.  */
1437
1438   /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */
1439   if (yychar == YYEMPTY)
1440     {
1441       YYDPRINTF ((stderr, "Reading a token: "));
1442       yychar = YYLEX;
1443     }
1444
1445   if (yychar <= YYEOF)
1446     {
1447       yychar = yytoken = YYEOF;
1448       YYDPRINTF ((stderr, "Now at end of input.\n"));
1449     }
1450   else
1451     {
1452       yytoken = YYTRANSLATE (yychar);
1453       YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
1454     }
1455
1456   /* If the proper action on seeing token YYTOKEN is to reduce or to
1457      detect an error, take that action.  */
1458   yyn += yytoken;
1459   if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
1460     goto yydefault;
1461   yyn = yytable[yyn];
1462   if (yyn <= 0)
1463     {
1464       if (yytable_value_is_error (yyn))
1465         goto yyerrlab;
1466       yyn = -yyn;
1467       goto yyreduce;
1468     }
1469
1470   /* Count tokens shifted since error; after three, turn off error
1471      status.  */
1472   if (yyerrstatus)
1473     yyerrstatus--;
1474
1475   /* Shift the lookahead token.  */
1476   YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
1477
1478   /* Discard the shifted token.  */
1479   yychar = YYEMPTY;
1480
1481   yystate = yyn;
1482   YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1483   *++yyvsp = yylval;
1484   YY_IGNORE_MAYBE_UNINITIALIZED_END
1485
1486   goto yynewstate;
1487
1488
1489 /*-----------------------------------------------------------.
1490 | yydefault -- do the default action for the current state.  |
1491 `-----------------------------------------------------------*/
1492 yydefault:
1493   yyn = yydefact[yystate];
1494   if (yyn == 0)
1495     goto yyerrlab;
1496   goto yyreduce;
1497
1498
1499 /*-----------------------------.
1500 | yyreduce -- Do a reduction.  |
1501 `-----------------------------*/
1502 yyreduce:
1503   /* yyn is the number of a rule to reduce with.  */
1504   yylen = yyr2[yyn];
1505
1506   /* If YYLEN is nonzero, implement the default value of the action:
1507      `$$ = $1'.
1508
1509      Otherwise, the following line sets YYVAL to garbage.
1510      This behavior is undocumented and Bison
1511      users should not rely upon it.  Assigning to YYVAL
1512      unconditionally makes the parser a bit smaller, and it avoids a
1513      GCC warning that YYVAL may be used uninitialized.  */
1514   yyval = yyvsp[1-yylen];
1515
1516
1517   YY_REDUCE_PRINT (yyn);
1518   switch (yyn)
1519     {
1520         case 2:
1521 /* Line 1792 of yacc.c  */
1522 #line 175 "plural.y"
1523     {
1524             if ((yyvsp[(1) - (1)].exp) == NULL)
1525               YYABORT;
1526             ((struct parse_args *) arg)->res = (yyvsp[(1) - (1)].exp);
1527           }
1528     break;
1529
1530   case 3:
1531 /* Line 1792 of yacc.c  */
1532 #line 183 "plural.y"
1533     {
1534             (yyval.exp) = new_exp_3 (qmop, (yyvsp[(1) - (5)].exp), (yyvsp[(3) - (5)].exp), (yyvsp[(5) - (5)].exp));
1535           }
1536     break;
1537
1538   case 4:
1539 /* Line 1792 of yacc.c  */
1540 #line 187 "plural.y"
1541     {
1542             (yyval.exp) = new_exp_2 (lor, (yyvsp[(1) - (3)].exp), (yyvsp[(3) - (3)].exp));
1543           }
1544     break;
1545
1546   case 5:
1547 /* Line 1792 of yacc.c  */
1548 #line 191 "plural.y"
1549     {
1550             (yyval.exp) = new_exp_2 (land, (yyvsp[(1) - (3)].exp), (yyvsp[(3) - (3)].exp));
1551           }
1552     break;
1553
1554   case 6:
1555 /* Line 1792 of yacc.c  */
1556 #line 195 "plural.y"
1557     {
1558             (yyval.exp) = new_exp_2 ((yyvsp[(2) - (3)].op), (yyvsp[(1) - (3)].exp), (yyvsp[(3) - (3)].exp));
1559           }
1560     break;
1561
1562   case 7:
1563 /* Line 1792 of yacc.c  */
1564 #line 199 "plural.y"
1565     {
1566             (yyval.exp) = new_exp_2 ((yyvsp[(2) - (3)].op), (yyvsp[(1) - (3)].exp), (yyvsp[(3) - (3)].exp));
1567           }
1568     break;
1569
1570   case 8:
1571 /* Line 1792 of yacc.c  */
1572 #line 203 "plural.y"
1573     {
1574             (yyval.exp) = new_exp_2 ((yyvsp[(2) - (3)].op), (yyvsp[(1) - (3)].exp), (yyvsp[(3) - (3)].exp));
1575           }
1576     break;
1577
1578   case 9:
1579 /* Line 1792 of yacc.c  */
1580 #line 207 "plural.y"
1581     {
1582             (yyval.exp) = new_exp_2 ((yyvsp[(2) - (3)].op), (yyvsp[(1) - (3)].exp), (yyvsp[(3) - (3)].exp));
1583           }
1584     break;
1585
1586   case 10:
1587 /* Line 1792 of yacc.c  */
1588 #line 211 "plural.y"
1589     {
1590             (yyval.exp) = new_exp_1 (lnot, (yyvsp[(2) - (2)].exp));
1591           }
1592     break;
1593
1594   case 11:
1595 /* Line 1792 of yacc.c  */
1596 #line 215 "plural.y"
1597     {
1598             (yyval.exp) = new_exp_0 (var);
1599           }
1600     break;
1601
1602   case 12:
1603 /* Line 1792 of yacc.c  */
1604 #line 219 "plural.y"
1605     {
1606             if (((yyval.exp) = new_exp_0 (num)) != NULL)
1607               (yyval.exp)->val.num = (yyvsp[(1) - (1)].num);
1608           }
1609     break;
1610
1611   case 13:
1612 /* Line 1792 of yacc.c  */
1613 #line 224 "plural.y"
1614     {
1615             (yyval.exp) = (yyvsp[(2) - (3)].exp);
1616           }
1617     break;
1618
1619
1620 /* Line 1792 of yacc.c  */
1621 #line 1622 "plural.c"
1622       default: break;
1623     }
1624   /* User semantic actions sometimes alter yychar, and that requires
1625      that yytoken be updated with the new translation.  We take the
1626      approach of translating immediately before every use of yytoken.
1627      One alternative is translating here after every semantic action,
1628      but that translation would be missed if the semantic action invokes
1629      YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
1630      if it invokes YYBACKUP.  In the case of YYABORT or YYACCEPT, an
1631      incorrect destructor might then be invoked immediately.  In the
1632      case of YYERROR or YYBACKUP, subsequent parser actions might lead
1633      to an incorrect destructor call or verbose syntax error message
1634      before the lookahead is translated.  */
1635   YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
1636
1637   YYPOPSTACK (yylen);
1638   yylen = 0;
1639   YY_STACK_PRINT (yyss, yyssp);
1640
1641   *++yyvsp = yyval;
1642
1643   /* Now `shift' the result of the reduction.  Determine what state
1644      that goes to, based on the state we popped back to and the rule
1645      number reduced by.  */
1646
1647   yyn = yyr1[yyn];
1648
1649   yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
1650   if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1651     yystate = yytable[yystate];
1652   else
1653     yystate = yydefgoto[yyn - YYNTOKENS];
1654
1655   goto yynewstate;
1656
1657
1658 /*------------------------------------.
1659 | yyerrlab -- here on detecting error |
1660 `------------------------------------*/
1661 yyerrlab:
1662   /* Make sure we have latest lookahead translation.  See comments at
1663      user semantic actions for why this is necessary.  */
1664   yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
1665
1666   /* If not already recovering from an error, report this error.  */
1667   if (!yyerrstatus)
1668     {
1669       ++yynerrs;
1670 #if ! YYERROR_VERBOSE
1671       yyerror (YY_("syntax error"));
1672 #else
1673 # define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \
1674                                         yyssp, yytoken)
1675       {
1676         char const *yymsgp = YY_("syntax error");
1677         int yysyntax_error_status;
1678         yysyntax_error_status = YYSYNTAX_ERROR;
1679         if (yysyntax_error_status == 0)
1680           yymsgp = yymsg;
1681         else if (yysyntax_error_status == 1)
1682           {
1683             if (yymsg != yymsgbuf)
1684               YYSTACK_FREE (yymsg);
1685             yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
1686             if (!yymsg)
1687               {
1688                 yymsg = yymsgbuf;
1689                 yymsg_alloc = sizeof yymsgbuf;
1690                 yysyntax_error_status = 2;
1691               }
1692             else
1693               {
1694                 yysyntax_error_status = YYSYNTAX_ERROR;
1695                 yymsgp = yymsg;
1696               }
1697           }
1698         yyerror (yymsgp);
1699         if (yysyntax_error_status == 2)
1700           goto yyexhaustedlab;
1701       }
1702 # undef YYSYNTAX_ERROR
1703 #endif
1704     }
1705
1706
1707
1708   if (yyerrstatus == 3)
1709     {
1710       /* If just tried and failed to reuse lookahead token after an
1711          error, discard it.  */
1712
1713       if (yychar <= YYEOF)
1714         {
1715           /* Return failure if at end of input.  */
1716           if (yychar == YYEOF)
1717             YYABORT;
1718         }
1719       else
1720         {
1721           yydestruct ("Error: discarding",
1722                       yytoken, &yylval);
1723           yychar = YYEMPTY;
1724         }
1725     }
1726
1727   /* Else will try to reuse lookahead token after shifting the error
1728      token.  */
1729   goto yyerrlab1;
1730
1731
1732 /*---------------------------------------------------.
1733 | yyerrorlab -- error raised explicitly by YYERROR.  |
1734 `---------------------------------------------------*/
1735 yyerrorlab:
1736
1737   /* Pacify compilers like GCC when the user code never invokes
1738      YYERROR and the label yyerrorlab therefore never appears in user
1739      code.  */
1740   if (/*CONSTCOND*/ 0)
1741      goto yyerrorlab;
1742
1743   /* Do not reclaim the symbols of the rule which action triggered
1744      this YYERROR.  */
1745   YYPOPSTACK (yylen);
1746   yylen = 0;
1747   YY_STACK_PRINT (yyss, yyssp);
1748   yystate = *yyssp;
1749   goto yyerrlab1;
1750
1751
1752 /*-------------------------------------------------------------.
1753 | yyerrlab1 -- common code for both syntax error and YYERROR.  |
1754 `-------------------------------------------------------------*/
1755 yyerrlab1:
1756   yyerrstatus = 3;      /* Each real token shifted decrements this.  */
1757
1758   for (;;)
1759     {
1760       yyn = yypact[yystate];
1761       if (!yypact_value_is_default (yyn))
1762         {
1763           yyn += YYTERROR;
1764           if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
1765             {
1766               yyn = yytable[yyn];
1767               if (0 < yyn)
1768                 break;
1769             }
1770         }
1771
1772       /* Pop the current state because it cannot handle the error token.  */
1773       if (yyssp == yyss)
1774         YYABORT;
1775
1776
1777       yydestruct ("Error: popping",
1778                   yystos[yystate], yyvsp);
1779       YYPOPSTACK (1);
1780       yystate = *yyssp;
1781       YY_STACK_PRINT (yyss, yyssp);
1782     }
1783
1784   YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
1785   *++yyvsp = yylval;
1786   YY_IGNORE_MAYBE_UNINITIALIZED_END
1787
1788
1789   /* Shift the error token.  */
1790   YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
1791
1792   yystate = yyn;
1793   goto yynewstate;
1794
1795
1796 /*-------------------------------------.
1797 | yyacceptlab -- YYACCEPT comes here.  |
1798 `-------------------------------------*/
1799 yyacceptlab:
1800   yyresult = 0;
1801   goto yyreturn;
1802
1803 /*-----------------------------------.
1804 | yyabortlab -- YYABORT comes here.  |
1805 `-----------------------------------*/
1806 yyabortlab:
1807   yyresult = 1;
1808   goto yyreturn;
1809
1810 #if !defined yyoverflow || YYERROR_VERBOSE
1811 /*-------------------------------------------------.
1812 | yyexhaustedlab -- memory exhaustion comes here.  |
1813 `-------------------------------------------------*/
1814 yyexhaustedlab:
1815   yyerror (YY_("memory exhausted"));
1816   yyresult = 2;
1817   /* Fall through.  */
1818 #endif
1819
1820 yyreturn:
1821   if (yychar != YYEMPTY)
1822     {
1823       /* Make sure we have latest lookahead translation.  See comments at
1824          user semantic actions for why this is necessary.  */
1825       yytoken = YYTRANSLATE (yychar);
1826       yydestruct ("Cleanup: discarding lookahead",
1827                   yytoken, &yylval);
1828     }
1829   /* Do not reclaim the symbols of the rule which action triggered
1830      this YYABORT or YYACCEPT.  */
1831   YYPOPSTACK (yylen);
1832   YY_STACK_PRINT (yyss, yyssp);
1833   while (yyssp != yyss)
1834     {
1835       yydestruct ("Cleanup: popping",
1836                   yystos[*yyssp], yyvsp);
1837       YYPOPSTACK (1);
1838     }
1839 #ifndef yyoverflow
1840   if (yyss != yyssa)
1841     YYSTACK_FREE (yyss);
1842 #endif
1843 #if YYERROR_VERBOSE
1844   if (yymsg != yymsgbuf)
1845     YYSTACK_FREE (yymsg);
1846 #endif
1847   /* Make sure YYID is used.  */
1848   return YYID (yyresult);
1849 }
1850
1851
1852 /* Line 2055 of yacc.c  */
1853 #line 229 "plural.y"
1854
1855
1856 void
1857 internal_function
1858 FREE_EXPRESSION (exp)
1859      struct expression *exp;
1860 {
1861   if (exp == NULL)
1862     return;
1863
1864   /* Handle the recursive case.  */
1865   switch (exp->nargs)
1866     {
1867     case 3:
1868       FREE_EXPRESSION (exp->val.args[2]);
1869       /* FALLTHROUGH */
1870     case 2:
1871       FREE_EXPRESSION (exp->val.args[1]);
1872       /* FALLTHROUGH */
1873     case 1:
1874       FREE_EXPRESSION (exp->val.args[0]);
1875       /* FALLTHROUGH */
1876     default:
1877       break;
1878     }
1879
1880   free (exp);
1881 }
1882
1883
1884 static int
1885 yylex (lval, pexp)
1886      YYSTYPE *lval;
1887      const char **pexp;
1888 {
1889   const char *exp = *pexp;
1890   int result;
1891
1892   while (1)
1893     {
1894       if (exp[0] == '\0')
1895         {
1896           *pexp = exp;
1897           return YYEOF;
1898         }
1899
1900       if (exp[0] != ' ' && exp[0] != '\t')
1901         break;
1902
1903       ++exp;
1904     }
1905
1906   result = *exp++;
1907   switch (result)
1908     {
1909     case '0': case '1': case '2': case '3': case '4':
1910     case '5': case '6': case '7': case '8': case '9':
1911       {
1912         unsigned long int n = result - '0';
1913         while (exp[0] >= '0' && exp[0] <= '9')
1914           {
1915             n *= 10;
1916             n += exp[0] - '0';
1917             ++exp;
1918           }
1919         lval->num = n;
1920         result = NUMBER;
1921       }
1922       break;
1923
1924     case '=':
1925       if (exp[0] == '=')
1926         {
1927           ++exp;
1928           lval->op = equal;
1929           result = EQUOP2;
1930         }
1931       else
1932         result = YYERRCODE;
1933       break;
1934
1935     case '!':
1936       if (exp[0] == '=')
1937         {
1938           ++exp;
1939           lval->op = not_equal;
1940           result = EQUOP2;
1941         }
1942       break;
1943
1944     case '&':
1945     case '|':
1946       if (exp[0] == result)
1947         ++exp;
1948       else
1949         result = YYERRCODE;
1950       break;
1951
1952     case '<':
1953       if (exp[0] == '=')
1954         {
1955           ++exp;
1956           lval->op = less_or_equal;
1957         }
1958       else
1959         lval->op = less_than;
1960       result = CMPOP2;
1961       break;
1962
1963     case '>':
1964       if (exp[0] == '=')
1965         {
1966           ++exp;
1967           lval->op = greater_or_equal;
1968         }
1969       else
1970         lval->op = greater_than;
1971       result = CMPOP2;
1972       break;
1973
1974     case '*':
1975       lval->op = mult;
1976       result = MULOP2;
1977       break;
1978
1979     case '/':
1980       lval->op = divide;
1981       result = MULOP2;
1982       break;
1983
1984     case '%':
1985       lval->op = module;
1986       result = MULOP2;
1987       break;
1988
1989     case '+':
1990       lval->op = plus;
1991       result = ADDOP2;
1992       break;
1993
1994     case '-':
1995       lval->op = minus;
1996       result = ADDOP2;
1997       break;
1998
1999     case 'n':
2000     case '?':
2001     case ':':
2002     case '(':
2003     case ')':
2004       /* Nothing, just return the character.  */
2005       break;
2006
2007     case ';':
2008     case '\n':
2009     case '\0':
2010       /* Be safe and let the user call this function again.  */
2011       --exp;
2012       result = YYEOF;
2013       break;
2014
2015     default:
2016       result = YYERRCODE;
2017 #if YYDEBUG != 0
2018       --exp;
2019 #endif
2020       break;
2021     }
2022
2023   *pexp = exp;
2024
2025   return result;
2026 }
2027
2028
2029 static void
2030 yyerror (str)
2031      const char *str;
2032 {
2033   /* Do nothing.  We don't print error messages here.  */
2034 }