AbsFileStream.h

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#ifndef CLASSIC_AbsFileStream_HH
#define CLASSIC_AbsFileStream_HH
 
// ------------------------------------------------------------------------
// $RCSfile: AbsFileStream.h,v $
// ------------------------------------------------------------------------
// $Revision: 1.1.1.1 $
// ------------------------------------------------------------------------
// Copyright: see Copyright.readme
// ------------------------------------------------------------------------
//
// Class: AbsFileStream
//
// ------------------------------------------------------------------------
// Class category: Parser
// ------------------------------------------------------------------------
//
// $Date: 2000/03/27 09:32:37 $
// $Author: fci $
//
// ------------------------------------------------------------------------
 
#include "OpalParser/TokenStream.h"
 
 
// Class AbsFileStream
// ------------------------------------------------------------------------
//  The source of tokens is an abstract file stream.
 
class AbsFileStream: public TokenStream {
 
public:

    //  Store stream name.
    explicit AbsFileStream(const std::string &name);
 
    virtual ~AbsFileStream();

    virtual bool fillLine() = 0;

    //  Returns false when end of file is hit.
    virtual Token readToken();
 
protected:
 
    // Read double from current statement.
    Token readNumber();
 
    // Read string value from current statement.
    Token readString();
 
    // Read word from current statement.
    Token readWord();
 
    // Skip C-like comments.
    bool skipComments();
 
    // Current input line and position in line.
    std::string line;
    int curr_char;
 
private:
 
    // Not implemented.
    AbsFileStream();
    AbsFileStream(const AbsFileStream &);
    void operator=(const AbsFileStream &);
};
 
#endif // CLASSIC_AbsFileStream_HH