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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
* 1989-2000
*/
/* Completely rewritten by Chris Uzdavinis (chris@atdesk.com) for MR23 */
#include "pcctscfg.h"
#include "pccts_iostream.h"
PCCTS_NAMESPACE_STD
// MR20 Added #include for "DLexerBase.h"
#include "DLexerBase.h"
//
// The default buffer size of the lexer is given by the
// second argument of the lexer's ctor. It is optional
// and defaults to 2000
//
template<class Lexer, class Parser, class Token>
class DllExportPCCTS ParserBlackBox {
private:
// no copy construction allowed
ParserBlackBox(ParserBlackBox const &);
// no copy assignment allowed
ParserBlackBox & operator=(ParserBlackBox const &);
protected:
DLGFileInput *in;
Lexer *scan;
_ANTLRTokenPtr tok;
ANTLRTokenBuffer *pipe;
Parser *_parser;
FILE *file;
int openByBlackBox; /* MR21 Don't close what we haven't opened */
public:
ParserBlackBox(FILE *f)
: in(0)
, scan(0)
, tok(0)
, pipe(0)
, _parser(0)
, file(0)
, openByBlackBox(0)
{
if (f == NULL)
{
cerr << "invalid file pointer\n";
}
else
{
openByBlackBox = 0; /* MR21a */
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)
: in(0)
, scan(0)
, tok(0)
, pipe(0)
, _parser(0)
, file(0)
, openByBlackBox(0)
{
FILE *f = fopen(fname, "r");
if ( f==NULL ) {
openByBlackBox = 0;
cerr << "cannot open " << fname << "\n"; return;
}
else {
openByBlackBox = 1;
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;
if (1 == openByBlackBox) {
fclose(file);
}
}
Parser *parser() { return _parser; }
Lexer *getLexer() { return scan; }
};
#endif
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