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

   1 /* ATokPtr.h
   2  *
   3  * SOFTWARE RIGHTS
   4  *
   5  * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
   6  * Set (PCCTS) -- PCCTS is in the public domain.  An individual or
   7  * company may do whatever they wish with source code distributed with
   8  * PCCTS or the code generated by PCCTS, including the incorporation of
   9  * PCCTS, or its output, into commerical software.
  10  *
  11  * We encourage users to develop software with PCCTS.  However, we do ask
  12  * that credit is given to us for developing PCCTS.  By "credit",
  13  * we mean that if you incorporate our source code into one of your
  14  * programs (commercial product, research project, or otherwise) that you
  15  * acknowledge this fact somewhere in the documentation, research report,
  16  * etc...  If you like PCCTS and have developed a nice tool with the
  17  * output, please mention that you developed it using PCCTS.  In
  18  * addition, we ask that this header remain intact in our source code.
  19  * As long as these guidelines are kept, we expect to continue enhancing
  20  * this system and expect to make other tools available as they are
  21  * completed.
  22  *
  23  * ANTLR 1.33
  24  * Written by Russell Quong June 30, 1995
  25  * Adapted by Terence Parr to ANTLR stuff
  26  * Parr Research Corporation
  27  * with Purdue University and AHPCRC, University of Minnesota
  28  * 1989-1998
  29  */
  30
  31 #ifndef ATokPtr_h
  32 #define ATokPtr_h
  33
  34 #include "pcctscfg.h"
  35
  36 #include "pccts_stdio.h"
  37
  38 PCCTS_NAMESPACE_STD
  39
  40 // pointer to a reference counted object
  41 // robust in that an unused ANTLRTokenPtr can point to NULL.
  42
  43 class ANTLRAbstractToken;
  44
  45 class DllExportPCCTS ANTLRTokenPtr {
  46 public:
  47     ANTLRTokenPtr(ANTLRAbstractToken *addr=NULL){ptr_ = addr; ref();}
  48     ANTLRTokenPtr(const ANTLRTokenPtr &lhs)  {ptr_ = lhs.ptr_; lhs.ref();}
  49     ~ANTLRTokenPtr();
  50
  51     // use ANTLRTokenPtr as a pointer to ANTLRToken
  52 //
  53 //  8-Apr-97  MR1  Make operator -> a const member function
  54 //        as well as some other member functions
  55 //
  56     ANTLRAbstractToken *operator-> () const { return ptr_; }    // MR1
  57 //
  58 //  7-Apr-97 133MR1
  59 //       Fix suggested by Andreas Magnusson
  60 //      (Andreas.Magnusson@mailbox.swipnet.se)
  61     void operator = (const ANTLRTokenPtr & lhs);          // MR1
  62     void operator = (ANTLRAbstractToken *addr);
  63     int operator != (const ANTLRTokenPtr &q) const          // MR1 // MR11 unsigned -> int
  64   { return this->ptr_ != q.ptr_; }
  65     int operator == (const ANTLRTokenPtr &q) const        // MR1 // MR11 unsigned -> int
  66   { return this->ptr_ == q.ptr_; }
  67     int operator == (const ANTLRAbstractToken *addr) const      // MR11
  68     { return this->ptr_ == addr; }
  69     int operator != (const ANTLRAbstractToken *addr) const      // MR11
  70     { return this->ptr_ != addr; }
  71
  72     void ref() const;
  73     void deref();
  74
  75 protected:
  76     ANTLRAbstractToken *ptr_;
  77 };
  78
  79 //typedef ANTLRTokenPtr _ANTLRTokenPtr;
  80
  81 /*
  82  * Since you cannot redefine operator->() to return one of the user's
  83  * token object types, we must down cast.  This is a drag.  Here's
  84  * a macro that helps.  template: "mytoken(a-smart-ptr)->myfield".
  85  */
  86 #define mytoken(tk) ((ANTLRToken *)(tk.operator->()))
  87
  88 #endif