TokenStream.h

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#ifndef OPALX_TokenStream_HH
#define OPALX_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 <string>
#include "OpalParser/Token.h"
 
// Class TokenStream
// ------------------------------------------------------------------------
 
class TokenStream {
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  // OPALX_TokenStream_HH