View of xos/usr/xsh/lex.h

/* Copyright (C) 2008  Emmanuel Varoquaux
 
   This file is part of XOS.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
#ifndef LEX_H
#define LEX_H
 
typedef int (*lexer_getc_func_t)();
 
/* types de tokens */
enum {
  TT_AND_AND,           /* '&&' */
  TT_OR_OR,             /* '||' */
 
  TT_GREATER_GREATER,   /* '>>' */
  TT_LESS_AND,          /* '<&' */
  TT_GREATER_AND,       /* '>&' */
  TT_LESS_GREATER,      /* '<>' */
  TT_GREATER_BAR,       /* '>|' */
 
  TT_GREATER,           /* '>' */
  TT_LESS,              /* '<' */
  TT_SEMICOLON,         /* ';' */
  TT_LEFT_PARENTHESIS,  /* '(' */
  TT_RIGHT_PARENTHESIS, /* ')' */
  TT_BAR,               /* '|' */
  TT_AMPERSAND,         /* '&' */
  TT_NEWLINE,           /* '\n' */
 
  TT_NUMBER,
  TT_WORD,
 
  TT_END_OF_INPUT
};
 
/* token */
struct token_struct {
  int type;
  union {
    int number;         /* TT_NUMBER */
    char *word;         /* TT_WORD */
    int error;          /* TT_END_OF_INPUT */
  };
};
 
extern lexer_getc_func_t lexer_getc_func;
extern struct token_struct current_token;
 
void lex();
void skip_line();
char *remove_quotes(const char *string);
 
#endif