PBlackBox.h

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#ifndef PBLACKBOX_H
#define PBLACKBOX_H

/*
 * SOFTWARE RIGHTS
 *
 * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
 * Set (PCCTS) -- PCCTS is in the public domain.  An individual or
 * company may do whatever they wish with source code distributed with
 * PCCTS or the code generated by PCCTS, including the incorporation of
 * PCCTS, or its output, into commerical software.
 *
 * We encourage users to develop software with PCCTS.  However, we do ask
 * that credit is given to us for developing PCCTS.  By "credit",
 * we mean that if you incorporate our source code into one of your
 * programs (commercial product, research project, or otherwise) that you
 * acknowledge this fact somewhere in the documentation, research report,
 * etc...  If you like PCCTS and have developed a nice tool with the
 * output, please mention that you developed it using PCCTS.  In
 * addition, we ask that this header remain intact in our source code.
 * As long as these guidelines are kept, we expect to continue enhancing
 * this system and expect to make other tools available as they are
 * completed.
 *
 * ANTLR 1.33
 * Terence Parr
 * Parr Research Corporation
 * with Purdue University and AHPCRC, University of Minnesota
 * 1989-1998
 */

#include <iostream.h>

//hack
#include "ATokenBuffer.h"

template<class Lexer, class Parser, class Token>
class ParserBlackBox {
protected:
        DLGFileInput *in;
        Lexer *scan;
        _ANTLRTokenPtr tok;
        ANTLRTokenBuffer *pipe;
        Parser *_parser;
        FILE *file;
public:
        
        ParserBlackBox(FILE *f)
                {
                        file = f;
                        in = new DLGFileInput(f);
                        scan = new Lexer(in);
                        pipe = new ANTLRTokenBuffer(scan);
                        tok = new Token;
                        scan->setToken(tok);
                        _parser = new Parser(pipe);
                        _parser->init();
                }
        ParserBlackBox(char *fname)
                {
                        FILE *f = fopen(fname, "r");
                        if ( f==NULL ) {cerr << "cannot open " << fname << "\n"; return;}
                        else {
                                file = f;
                                in = new DLGFileInput(f);
                                scan = new Lexer(in);
                                pipe = new ANTLRTokenBuffer(scan);
                                tok = new Token;
                                scan->setToken(tok);
                                _parser = new Parser(pipe);
                                _parser->init();
                        }
                }
        ~ParserBlackBox()
                {
                        delete in; delete scan; delete pipe; delete _parser; delete tok;
                        fclose(file);
                }

        Parser *parser()           { return _parser; }
    Lexer  *getLexer()     { return scan; }
};

#endif