EdkCompatibilityPkg/Other/Maintained/Tools/Pccts/h/PBlackBox.h

   1 #ifndef PBLACKBOX_H
   2 #define PBLACKBOX_H
   3
   4 /*
   5  * SOFTWARE RIGHTS
   6  *
   7  * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
   8  * Set (PCCTS) -- PCCTS is in the public domain.  An individual or
   9  * company may do whatever they wish with source code distributed with
  10  * PCCTS or the code generated by PCCTS, including the incorporation of
  11  * PCCTS, or its output, into commerical software.
  12  *
  13  * We encourage users to develop software with PCCTS.  However, we do ask
  14  * that credit is given to us for developing PCCTS.  By "credit",
  15  * we mean that if you incorporate our source code into one of your
  16  * programs (commercial product, research project, or otherwise) that you
  17  * acknowledge this fact somewhere in the documentation, research report,
  18  * etc...  If you like PCCTS and have developed a nice tool with the
  19  * output, please mention that you developed it using PCCTS.  In
  20  * addition, we ask that this header remain intact in our source code.
  21  * As long as these guidelines are kept, we expect to continue enhancing
  22  * this system and expect to make other tools available as they are
  23  * completed.
  24  *
  25  * ANTLR 1.33
  26  * Terence Parr
  27  * Parr Research Corporation
  28  * with Purdue University and AHPCRC, University of Minnesota
  29  * 1989-1998
  30  */
  31
  32 #include "pcctscfg.h"
  33
  34 #include "pccts_iostream.h"
  35
  36 PCCTS_NAMESPACE_STD
  37
  38 //  MR20 Added #include for "DLexerBase.h"
  39
  40 #include "DLexerBase.h"
  41
  42 //
  43 //  The default buffer size of the lexer is given by the
  44 //   second argument of the lexer's ctor.  It is optional
  45 //   and defaults to 2000
  46 //
  47
  48 template<class Lexer, class Parser, class Token>
  49 class DllExportPCCTS ParserBlackBox {
  50 protected:
  51   DLGFileInput *in;
  52   Lexer *scan;
  53   _ANTLRTokenPtr tok;
  54   ANTLRTokenBuffer *pipe;
  55   Parser *_parser;
  56   FILE *file;
  57     int openByBlackBox;    /* MR21 Don't close what we haven't opened */
  58 public:
  59
  60   ParserBlackBox(FILE *f)
  61     {
  62             openByBlackBox = 0;     /* MR21a */
  63       file = f;
  64       in = new DLGFileInput(f);
  65       scan = new Lexer(in);
  66       pipe = new ANTLRTokenBuffer(scan);
  67       tok = new Token;
  68       scan->setToken(tok);
  69       _parser = new Parser(pipe);
  70       _parser->init();
  71     }
  72   ParserBlackBox(char *fname)
  73     {
  74       FILE *f = fopen(fname, "r");
  75       if ( f==NULL ) {
  76                 openByBlackBox = 0;
  77                 cerr << "cannot open " << fname << "\n"; return;
  78             }
  79       else {
  80                 openByBlackBox = 1;
  81         file = f;
  82         in = new DLGFileInput(f);
  83         scan = new Lexer(in);
  84         pipe = new ANTLRTokenBuffer(scan);
  85         tok = new Token;
  86         scan->setToken(tok);
  87         _parser = new Parser(pipe);
  88         _parser->init();
  89       }
  90     }
  91
  92   ~ParserBlackBox()
  93     {
  94       delete in; delete scan; delete pipe; delete _parser; delete tok;
  95             if (1 == openByBlackBox) {
  96           fclose(file);
  97             }
  98     }
  99
 100   Parser *parser()     { return _parser; }
 101     Lexer  *getLexer()     { return scan; }
 102 };
 103
 104 #endif