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1 | /* ATokPtr.C\r |
| 2 | *\r |
| 3 | * ANTLRToken MUST be defined before entry to this file.\r |
| 4 | *\r |
| 5 | * SOFTWARE RIGHTS\r |
| 6 | *\r |
| 7 | * We reserve no LEGAL rights to the Purdue Compiler Construction Tool\r |
| 8 | * Set (PCCTS) -- PCCTS is in the public domain. An individual or\r |
| 9 | * company may do whatever they wish with source code distributed with\r |
| 10 | * PCCTS or the code generated by PCCTS, including the incorporation of\r |
| 11 | * PCCTS, or its output, into commerical software.\r |
| 12 | *\r |
| 13 | * We encourage users to develop software with PCCTS. However, we do ask\r |
| 14 | * that credit is given to us for developing PCCTS. By "credit",\r |
| 15 | * we mean that if you incorporate our source code into one of your\r |
| 16 | * programs (commercial product, research project, or otherwise) that you\r |
| 17 | * acknowledge this fact somewhere in the documentation, research report,\r |
| 18 | * etc... If you like PCCTS and have developed a nice tool with the\r |
| 19 | * output, please mention that you developed it using PCCTS. In\r |
| 20 | * addition, we ask that this header remain intact in our source code.\r |
| 21 | * As long as these guidelines are kept, we expect to continue enhancing\r |
| 22 | * this system and expect to make other tools available as they are\r |
| 23 | * completed.\r |
| 24 | *\r |
| 25 | * ANTLR 1.33\r |
| 26 | * Written by Russell Quong June 30, 1995\r |
| 27 | * Adapted by Terence Parr to ANTLR stuff\r |
| 28 | * Parr Research Corporation\r |
| 29 | * with Purdue University and AHPCRC, University of Minnesota\r |
| 30 | * 1989-1998\r |
| 31 | */\r |
| 32 | \r |
| 33 | #include "pcctscfg.h"\r |
| 34 | \r |
| 35 | PCCTS_NAMESPACE_STD\r |
| 36 | \r |
| 37 | #include "ATokPtr.h"\r |
| 38 | \r |
| 39 | void ANTLRTokenPtr::ref() const\r |
| 40 | {\r |
| 41 | if (ptr_ != NULL) {\r |
| 42 | ptr_->ref();\r |
| 43 | }\r |
| 44 | }\r |
| 45 | \r |
| 46 | void ANTLRTokenPtr::deref()\r |
| 47 | {\r |
| 48 | if (ptr_ != NULL)\r |
| 49 | {\r |
| 50 | ptr_->deref();\r |
| 51 | if ( ptr_->nref()==0 )\r |
| 52 | {\r |
| 53 | delete ptr_;\r |
| 54 | ptr_ = NULL;\r |
| 55 | }\r |
| 56 | }\r |
| 57 | }\r |
| 58 | \r |
| 59 | ANTLRTokenPtr::~ANTLRTokenPtr()\r |
| 60 | {\r |
| 61 | deref();\r |
| 62 | }\r |
| 63 | \r |
| 64 | //\r |
| 65 | // 8-Apr-97 MR1 Make operator -> a const member function\r |
| 66 | // as weall as some other member functions\r |
| 67 | //\r |
| 68 | void ANTLRTokenPtr::operator = (const ANTLRTokenPtr & lhs) // MR1\r |
| 69 | {\r |
| 70 | lhs.ref(); // protect against "xp = xp"; ie same underlying object\r |
| 71 | deref();\r |
| 72 | ptr_ = lhs.ptr_;\r |
| 73 | }\r |
| 74 | \r |
| 75 | void ANTLRTokenPtr::operator = (ANTLRAbstractToken *addr)\r |
| 76 | {\r |
| 77 | if (addr != NULL) {\r |
| 78 | addr->ref();\r |
| 79 | }\r |
| 80 | deref();\r |
| 81 | ptr_ = addr;\r |
| 82 | }\r |
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