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hexlex.h
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hexlex.h
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/** @file hexlex.h Lexical analyzer for Hexen definition/script syntax.
*
* @authors Copyright © 2003-2013 Jaakko Keränen <jaakko.keranen@iki.fi>
* @authors Copyright © 2007-2013 Daniel Swanson <danij@dengine.net>
* @authors Copyright © 1999 Activision
*
* @par License
* GPL: http://www.gnu.org/licenses/gpl.html
*
* <small>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 2 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, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA</small>
*/
#ifndef LIBCOMMON_HEXLEX_H
#define LIBCOMMON_HEXLEX_H
#include "common.h"
/**
* Lexical analyzer for Hexen definition/script syntax.
*/
class HexLex
{
public:
HexLex();
~HexLex();
/**
* Prepare a new script for parsing. It is assumed that the @a script data
* remains available until parsing is completed (or the script is replaced).
*
* @param script The script source to be parsed.
* @param sourcePath Used to identify the script in log messages. A copy is made.
*/
void parse(Str const *script, Str const *sourcePath);
bool readToken();
Str const *token();
void unreadToken();
Str const *readString();
int readNumber();
AutoStr *readLumpName();
int readSoundId();
int readSoundIndex();
uint readMapNumber();
Uri *readTextureUri(char const *defaultScheme);
int lineNumber() const;
void scriptError();
void scriptError(char const *message);
private:
void checkOpen();
bool atEnd();
Str _sourcePath; ///< Used to identify the source in error messages.
Str const *_script; ///< The start of the script being parsed.
int _readPos; ///< Current read position.
int _lineNumber;
Str _token;
int _tokenAsNumber;
bool _alreadyGot;
bool _multiline; ///< @c true= current token spans multiple lines.
};
#endif // LIBCOMMON_HEXLEX_H