/*
 *  QT AGI Studio :: Copyright (C) 2000 Helen Zommer
 *
 *
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#ifndef LOGIC_H
#define LOGIC_H

#include "words.h"
#include "object.h"
#include "agicommands.h"
#include "game.h"

#define MaxBlockDepth  12
#define MaxLabels  255
#define MaxDefines  255
#define MaxMessages 256
#define MaxGotos 255

//Logic class used both for decode and compile
class Logic
{
 public:
  Logic();
  WordList *wordlist;
  ObjList *objlist;
  string OutputText;    //result of the decoding
  string ErrorList;     //compilation error messages
  unsigned int maxcol;  //max number of columns in window - used in formatting 'print' strings
  int compile();
  int decode(int resnum);

 private:
  void ShowError(int Line, string ErrorMsg);
  void DisplayMessages();
  void ReadMessages();
  int FindLabels_ReadIfs();
  void AddBlockEnds();
  int FindLabels();
  void AddArg(byte Arg, byte ArgType);
  void AddSpecialSyntaxCommand();
  void AddSpecialIFSyntaxCommand();
  void ReadIfs();

  string ReadString(string::size_type *pos, string& str);
  int RemoveComments(TStringList Lines);
  int AddIncludes();
  int ReadDefines();
  int ReadPredefinedMessages();
  int ReadLabels();
  void NextLine();
  void SkipSpaces();
  byte MessageNum(string TheMessage);
  byte AddMessage(string TheMessage);
  string ReplaceDefine(string InText);
  void ReadArgText();
  int ReadArgValue();
  int Val(string str);
  void ReadArgs(bool CommandIsIf, byte CmdNum);
  string ReadText();
  string ReadPlainText();
  string ReadExprText();
  void ReadCommandName();
  byte FindCommandNum(bool CommandIsIf,string CmdName);
  bool AddSpecialIFSyntax();
  bool AddSpecialSyntax();
  int LabelNum(string LabelName);
  bool LabelAtStartOfLine(string LabelName);
  void WriteMessageSection();
  int CompileCommands();

};

extern char tmp[];

#endif