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ParserSharedInputState.hpp

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#ifndef INC_ParserSharedInputState_hpp__
#define INC_ParserSharedInputState_hpp__

/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/license.html
 *
 * $Id: ParserSharedInputState.hpp,v 1.1 2004/10/08 16:27:34 dfisher Exp $
 */

#include <antlr/config.hpp>
#include <antlr/TokenBuffer.hpp>
#include <antlr/RefCount.hpp>
#include <string>

#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif

class ANTLR_API ParserInputState {
public:
        ParserInputState( TokenBuffer* in )
        : guessing(0)
        , filename()
        , input(in)
        , inputResponsible(true)
        {
        }
        ParserInputState( TokenBuffer& in )
        : guessing(0)
        , filename("")
        , input(&in)
        , inputResponsible(false)
        {
        }

        virtual ~ParserInputState()
        {
                if (inputResponsible)
                        delete input;
        }

        TokenBuffer& getInput( void )
        {
                return *input;
        }

        void reset( void )
        {
                input->reset();
                guessing = 0;
        }

public:
        int guessing;
        ANTLR_USE_NAMESPACE(std)string filename;
private:
        TokenBuffer* input;
        bool inputResponsible;

        // we don't want these:
        ParserInputState(const ParserInputState&);
        ParserInputState& operator=(const ParserInputState&);
};

typedef RefCount<ParserInputState> ParserSharedInputState;

#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif

#endif //INC_ParserSharedInputState_hpp__

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