TokenStream.h

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#ifndef CLASSIC_TokenStream_HH
#define CLASSIC_TokenStream_HH

// ------------------------------------------------------------------------
// $RCSfile: TokenStream.h,v $
// ------------------------------------------------------------------------
// $Revision: 1.1.1.1 $
// ------------------------------------------------------------------------
// Copyright: see Copyright.readme
// ------------------------------------------------------------------------
//
// Class: TokenStream
//
// ------------------------------------------------------------------------
// Class category: Parser
// ------------------------------------------------------------------------
//
// $Date: 2000/03/27 09:32:37 $
// $Author: fci $
//
// ------------------------------------------------------------------------


#include "MemoryManagement/RCObject.h"
#include "Parser/Token.h"
#include <string>

// Class TokenStream
// ------------------------------------------------------------------------


class TokenStream: public RCObject {

public:

    //  Store the stream name.
    TokenStream(const std::string &name);

    virtual ~TokenStream();

    //  This allows to reparse the token.
    void putBack(const Token &token);

    virtual Token readToken() = 0;

    const std::string &getName() const;

    int getLine() const;

protected:

    // Current stream name.
    std::string stream_name;

    // Current input line number.
    int curr_line;

    // Last token put back, if any.
    bool put_back_flag;
    Token put_back;

private:

    // Not implemented.
    TokenStream();
    TokenStream(const TokenStream &);
    void operator=(const TokenStream &);
};

#endif // CLASSIC_TokenStream_HH