src/lex.h

   1 /* Token type definitions for bison's input reader,
   2    Copyright (C) 1984, 1989, 1992, 2000 Free Software Foundation, Inc.
   3
   4    This file is part of Bison, the GNU Compiler Compiler.
   5
   6    Bison is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    Bison is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with Bison; see the file COPYING.  If not, write to
  18    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef LEX_H_
  22 # define LEX_H_
  23
  24 /* Token-type codes. */
  25 # define ENDFILE        0
  26 # define IDENTIFIER     1
  27 # define COMMA          2
  28 # define COLON          3
  29 # define SEMICOLON      4
  30 # define BAR            5
  31 # define LEFT_CURLY     6
  32 # define TWO_PERCENTS   7
  33 # define PERCENT_LEFT_CURLY     8
  34 # define TOKEN          9
  35 # define NTERM          10
  36 # define GUARD          11
  37 # define TYPE           12
  38 # define UNION          13
  39 # define START          14
  40 # define LEFT           15
  41 # define RIGHT          16
  42 # define NONASSOC       17
  43 # define PREC           18
  44 # define SEMANTIC_PARSER 19
  45 # define PURE_PARSER    20
  46 # define TYPENAME       21
  47 # define NUMBER         22
  48 # define EXPECT         23
  49 # define THONG          24
  50 # define NOOP           25
  51 # define SETOPT         26
  52 # define ILLEGAL        27
  53
  54 # define MAXTOKEN       1024
  55
  56
  57 /* Allocated size of token_buffer, not including space for terminator.  */
  58 extern int maxtoken;
  59 extern char *token_buffer;
  60 char *grow_token_buffer PARAMS ((char *));
  61
  62 void init_lex PARAMS ((void));
  63 int skip_white_space PARAMS ((void));
  64 void unlex PARAMS ((int));
  65 void read_type_name PARAMS ((FILE *fin));
  66
  67 /* Return one of the token-type codes.  When an identifier is seen,
  68    the code IDENTIFIER is returned and the name is looked up in the
  69    symbol table using symtab.c; symval is set to a pointer to the
  70    entry found.  */
  71
  72 int lex PARAMS ((void));
  73
  74 int parse_percent_token PARAMS ((void));
  75
  76 extern bucket *symval;
  77 extern int numval;
  78
  79 #endif /* !LEX_H_ */