/*------------------------------------------------------------------------------
--  This file is a part of the VHDL Tools Software
--  Copyright (C) 2014, Plasma Physics Laboratory - CNRS
--
--  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-------------------------------------------------------------------------------*/
/*--                  Author : Alexis Jeandet
--                     Mail : alexis.jeandet@member.fsf.org
----------------------------------------------------------------------------*/
#ifndef vhdl_SCANNER_H
#define vhdl_SCANNER_H
#if ! defined(yyFlexLexerOnce)
#include <FlexLexer.h>
#endif
#include <iostream>
#include <cstdlib>
#include <fstream>
#include <QString>
#include <QList>
#include <QStack>
#include "vhdl_ast_node.h"
#undef  YY_DECL
#define YY_DECL int  VHDL_Tools::vhdl_Scanner::yylex()

namespace VHDL_Tools{

class vhdl_Scanner_block_stack
{
public:
    vhdl_Scanner_block_stack(bool waitForSemicolon,bool waitForParen, int delta)
        :waitForSemicolon(waitForSemicolon),waitForParen(waitForParen),stackDelta(delta){}
    bool waitForSemicolon;
    bool waitForParen;
    int stackDelta;
};

class vhdl_Scanner : public yyFlexLexer
{
public:
    vhdl_Scanner(std::istream *in,const QString& fileName);
    ~vhdl_Scanner();
    int scan();
    int newFile(std::istream *in, const QString& fileName, bool trashPreviousTree=false);
    VHDL_Tools::VHDL_AST_Node* getScanTree(){return rootNode;}
private:
   /* hide this one from public view */
   int yylex();
   /* handle locations */
   int yycolumn;
   void appendNode(VHDL_Tools::VHDL_AST_Node* node);
   VHDL_Tools::VHDL_AST_Node* rootNode,*currentNode;
};
}

#endif // vhdl_SCANNER_H