src/lex.h

   1 /* Token type definitions for bison's input reader,
   2    Copyright 1984, 1989, 1992, 2000, 2001 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 typedef enum token_e
  26   {
  27     tok_undef,  /* Not defined.  Used to initial token_t vars. */
  28     tok_eof,
  29     tok_identifier,
  30     tok_comma,
  31     tok_colon,
  32     tok_semicolon,
  33     tok_bar,
  34     tok_left_curly,
  35     tok_two_percents,
  36     tok_percent_left_curly,
  37     tok_token,
  38     tok_nterm,
  39     tok_guard,
  40     tok_type,
  41     tok_union,
  42     tok_start,
  43     tok_left,
  44     tok_right,
  45     tok_nonassoc,
  46     tok_prec,
  47     tok_typename,
  48     tok_number,
  49     tok_expect,
  50     tok_thong,
  51     tok_define,
  52     tok_skel,
  53     tok_noop,
  54     tok_setopt,
  55     tok_illegal,
  56     tok_obsolete
  57   } token_t;
  58
  59 extern const char *token_buffer;
  60 extern bucket *symval;
  61 extern int numval;
  62
  63 void lex_init PARAMS ((void));
  64 void lex_free PARAMS ((void));
  65 int skip_white_space PARAMS ((void));
  66 void unlex PARAMS ((token_t));
  67 void read_type_name PARAMS ((FILE *fin));
  68
  69 /* Return one of the token-type codes.  When an identifier is seen,
  70    the code IDENTIFIER is returned and the name is looked up in the
  71    symbol table using symtab.c; symval is set to a pointer to the
  72    entry found.  */
  73
  74 token_t lex PARAMS ((void));
  75
  76 token_t parse_percent_token PARAMS ((void));
  77
  78 #endif /* !LEX_H_ */