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 * 1989-2000 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 (at) mailbox.swipnet.se) 61 ANTLRTokenPtr& operator = (const ANTLRTokenPtr & lhs); // MR1 62 ANTLRTokenPtr& 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 89
