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 *   Copyright (C) 2003-2004 by David Saxton                               *
 *   david@bluehaze.org                                                    *
 *                                                                         *
 *   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.                                   *

#ifndef FLOWCODE_H
#define FLOWCODE_H

#include "language.h"

#include <qguardedptr.h>
#include <qobject.h>
#include <qstring.h>
#include <qstringlist.h>
#include <qvaluelist.h>

class CNItem;
class FlowPart;
class Item;
class MicroSettings;

typedef QValueList<FlowPart*> FlowPartList;
typedef QValueList<QGuardedPtr<Item> > ItemList;

"FlowCode" can possibly be considered a misnomer, as the output is actually Microbe.
However, the function of this class is to take a set of FlowParts, and generate the
basic from the code that they create. The 3 simple steps for usage of this function:
(1) Create an instance of this class, giving the Start point and setings
(2) Add all the subroutines present using addSubroutine()
(3) Call generateMicrobe() to get the Microbe code.
@author David Saxton
00039 class FlowCode : public Language
      FlowCode( ProcessChain *processChain );

      virtual void processInput( ProcessOptions options );
      virtual ProcessOptions::ProcessPath::Path outputPath( ProcessOptions::ProcessPath::Path inputPath ) const;

       * You must set the start part
      void setStartPart( FlowPart *startPart );
       * You must add all top level subroutines using this function
      void addSubroutine( FlowPart *part );
       * Adds code at the current insertion point
      void addCode( const QString& code );
       * Adds a code branch to the current insertion point. This will stop when the level gets
       * below the original starting level (so for insertion of the contents of a for loop,
       * insertion will stop at the end of that for loop).
       * @param flowPart The next FlowPart to get code from
      void addCodeBranch( FlowPart *flowPart );
       * Designates a FlowPart as a stopping part (i.e. will refuse requests to addCodeBranch
       * for that FlowPart until removeStopPart is called
      void addStopPart( FlowPart *part );
       * Undesignates a FlowPart as a stopping part
      void removeStopPart( FlowPart *part );
       * Generates and returns the microbe code
       * @param nonVerbal if true then will not inform the user when something goes wrong
      QString generateMicrobe( const ItemList &itemList, MicroSettings *settings );
       * Returns true if the FlowPart is a valid one for adding a branch
      bool isValidBranch( FlowPart *flowPart );
       * Generates a nice label name from the string, e.g. genLabel("callsub")
       * returns "__label_callsub".
      static QString genLabel( const QString &id );
       * Performs indenting, removal of unnecessary labels, etc.
      void tidyCode();

      QStringList m_gotos; // Gotos used
      QStringList m_labels; // Labels used
      FlowPartList m_subroutines;
      FlowPartList m_addedParts;
      FlowPartList m_stopParts;
      FlowPart *p_startPart;
      QString m_code;
      int m_curLevel;


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