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_type,
  40     tok_union,
  41     tok_start,
  42     tok_left,
  43     tok_right,
  44     tok_nonassoc,
  45     tok_prec,
  46     tok_typename,
  47     tok_number,
  48     tok_expect,
  49     tok_define,
  50     tok_skel,
  51     tok_noop,
  52     /* A directive that sets to true its associated variable. */
  53     tok_intopt,
  54     /* A directive that sets its associated variable to the string
  55        argument.  */
  56     tok_stropt,
  57     tok_illegal,
  58     tok_obsolete
  59   } token_t;
  60
  61 extern const char *token_buffer;
  62 extern symbol_t *symval;
  63 extern int numval;
  64
  65 void lex_init PARAMS ((void));
  66 void lex_free PARAMS ((void));
  67 int skip_white_space PARAMS ((void));
  68 void unlex PARAMS ((token_t));
  69 void read_type_name PARAMS ((FILE *fin));
  70 int xgetc PARAMS ((FILE *fin));
  71
  72 /* Return one of the token-type codes.  When an identifier is seen,
  73    the code IDENTIFIER is returned and the name is looked up in the
  74    symbol table using symtab.c; symval is set to a pointer to the
  75    entry found.  */
  76
  77 token_t lex PARAMS ((void));
  78 char literalchar PARAMS ((void));
  79
  80 token_t parse_percent_token PARAMS ((void));
  81
  82 #endif /* !LEX_H_ */