//
// aegis - project change supervisor
// Copyright (C) 1991-2014 Peter Miller
//
// 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 LIBAEGIS_META_LEX_H
#define LIBAEGIS_META_LEX_H

#include <libaegis/input.h>

class sub_context_ty; // forward
class input; // forward
class nstring; // forward
class string_ty; // forward

input::pointer lex_iopen_file(const nstring &filename);
input::pointer lex_iopen_env(const nstring &name);
void lex_open_input(const input::pointer &ip);
void lex_close(void);
void lex_error(struct sub_context_ty *, const char *);
void gram_error(const char *);
int gram_lex(void);

/**
  * The lex_position function is used to get the current lexer position.
  * If no file is open at present, it returns "end of input".
  */
nstring lex_position(void);

#endif // LIBAEGIS_META_LEX_H
// vim: set ts=8 sw=4 et :