#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 |