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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#ifndef PARALLACTION_PARSER_H
#define PARALLACTION_PARSER_H
#include "common/stream.h"
#include "parallaction/objects.h"
namespace Parallaction {
char *parseNextToken(char *s, char *tok, uint16 count, const char *brk, bool ignoreQuotes = false);
#define MAX_TOKEN_LEN 50
extern char _tokens[][MAX_TOKEN_LEN];
class Script {
Common::ReadStream *_input;
bool _disposeSource;
uint _line; // for debug messages
void clearTokens();
uint16 fillTokens(char* line);
public:
Script(Common::ReadStream *, bool _disposeSource = false);
~Script();
char *readLine(char *buf, size_t bufSize);
uint16 readLineToken(bool errorOnEOF = false);
void skip(const char* endToken);
uint getLine() { return _line; }
};
class Opcode {
public:
virtual void operator()() const = 0;
virtual ~Opcode() { }
};
template <class T>
class OpcodeImpl : public Opcode {
typedef void (T::*Fn)();
T* _instance;
Fn _fn;
public:
OpcodeImpl(T* instance, const Fn &fn) : _instance(instance), _fn(fn) { }
void operator()() const {
(_instance->*_fn)();
}
};
typedef Common::Array<const Opcode*> OpcodeSet;
class Parser {
public:
Parser() { reset(); }
~Parser() {}
uint _lookup;
Common::Stack<OpcodeSet*> _opcodes;
Common::Stack<Table*> _statements;
OpcodeSet *_currentOpcodes;
Table *_currentStatements;
void bind(Script *script);
void unbind();
void pushTables(OpcodeSet *opcodes, Table* statements);
void popTables();
void parseStatement();
protected:
void reset();
Script *_script;
};
} // namespace Parallaction
#endif
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