30fdf1140b
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8964 6f19259b-4bc3-4df7-8a09-765794883524
135 lines
3.5 KiB
C++
135 lines
3.5 KiB
C++
#ifndef PBLACKBOX_H
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#define PBLACKBOX_H
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/*
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* SOFTWARE RIGHTS
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*
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* We reserve no LEGAL rights to the Purdue Compiler Construction Tool
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* Set (PCCTS) -- PCCTS is in the public domain. An individual or
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* company may do whatever they wish with source code distributed with
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* PCCTS or the code generated by PCCTS, including the incorporation of
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* PCCTS, or its output, into commerical software.
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*
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* We encourage users to develop software with PCCTS. However, we do ask
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* that credit is given to us for developing PCCTS. By "credit",
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* we mean that if you incorporate our source code into one of your
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* programs (commercial product, research project, or otherwise) that you
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* acknowledge this fact somewhere in the documentation, research report,
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* etc... If you like PCCTS and have developed a nice tool with the
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* output, please mention that you developed it using PCCTS. In
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* addition, we ask that this header remain intact in our source code.
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* As long as these guidelines are kept, we expect to continue enhancing
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* this system and expect to make other tools available as they are
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* completed.
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*
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* ANTLR 1.33
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* Terence Parr
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* Parr Research Corporation
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* with Purdue University and AHPCRC, University of Minnesota
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* 1989-2000
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*/
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/* Completely rewritten by Chris Uzdavinis (chris@atdesk.com) for MR23 */
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#include "pcctscfg.h"
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#include "pccts_iostream.h"
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PCCTS_NAMESPACE_STD
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// MR20 Added #include for "DLexerBase.h"
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#include "DLexerBase.h"
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//
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// The default buffer size of the lexer is given by the
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// second argument of the lexer's ctor. It is optional
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// and defaults to 2000
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//
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template<class Lexer, class Parser, class Token>
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class DllExportPCCTS ParserBlackBox {
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private:
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// no copy construction allowed
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ParserBlackBox(ParserBlackBox const &);
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// no copy assignment allowed
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ParserBlackBox & operator=(ParserBlackBox const &);
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protected:
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DLGFileInput *in;
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Lexer *scan;
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_ANTLRTokenPtr tok;
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ANTLRTokenBuffer *pipe;
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Parser *_parser;
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FILE *file;
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int openByBlackBox; /* MR21 Don't close what we haven't opened */
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public:
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ParserBlackBox(FILE *f)
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: in(0)
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, scan(0)
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, tok(0)
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, pipe(0)
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, _parser(0)
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, file(0)
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, openByBlackBox(0)
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{
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if (f == NULL)
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{
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cerr << "invalid file pointer\n";
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}
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else
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{
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openByBlackBox = 0; /* MR21a */
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file = f;
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in = new DLGFileInput(f);
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scan = new Lexer(in);
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pipe = new ANTLRTokenBuffer(scan);
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tok = new Token;
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scan->setToken(tok);
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_parser = new Parser(pipe);
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_parser->init();
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}
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}
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ParserBlackBox(char *fname)
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: in(0)
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, scan(0)
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, tok(0)
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, pipe(0)
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, _parser(0)
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, file(0)
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, openByBlackBox(0)
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{
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FILE *f = fopen(fname, "r");
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if ( f==NULL ) {
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openByBlackBox = 0;
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cerr << "cannot open " << fname << "\n"; return;
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}
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else {
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openByBlackBox = 1;
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file = f;
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in = new DLGFileInput(f);
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scan = new Lexer(in);
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pipe = new ANTLRTokenBuffer(scan);
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tok = new Token;
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scan->setToken(tok);
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_parser = new Parser(pipe);
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_parser->init();
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}
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}
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~ParserBlackBox()
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{
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delete in; delete scan; delete pipe; delete _parser; delete tok;
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if (1 == openByBlackBox) {
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fclose(file);
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}
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}
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Parser *parser() { return _parser; }
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Lexer *getLexer() { return scan; }
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};
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#endif
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