+/* ANTLRToken.h\r
+ *\r
+ * SOFTWARE RIGHTS\r
+ *\r
+ * We reserve no LEGAL rights to the Purdue Compiler Construction Tool\r
+ * Set (PCCTS) -- PCCTS is in the public domain. An individual or\r
+ * company may do whatever they wish with source code distributed with\r
+ * PCCTS or the code generated by PCCTS, including the incorporation of\r
+ * PCCTS, or its output, into commerical software.\r
+ *\r
+ * We encourage users to develop software with PCCTS. However, we do ask\r
+ * that credit is given to us for developing PCCTS. By "credit",\r
+ * we mean that if you incorporate our source code into one of your\r
+ * programs (commercial product, research project, or otherwise) that you\r
+ * acknowledge this fact somewhere in the documentation, research report,\r
+ * etc... If you like PCCTS and have developed a nice tool with the\r
+ * output, please mention that you developed it using PCCTS. In\r
+ * addition, we ask that this header remain intact in our source code.\r
+ * As long as these guidelines are kept, we expect to continue enhancing\r
+ * this system and expect to make other tools available as they are\r
+ * completed.\r
+ *\r
+ * ANTLR 1.33\r
+ * Terence Parr\r
+ * Parr Research Corporation\r
+ * with Purdue University and AHPCRC, University of Minnesota\r
+ * 1989-1998\r
+ */\r
+\r
+#ifndef ATOKEN_H_GATE\r
+#define ATOKEN_H_GATE\r
+\r
+#include "pcctscfg.h"\r
+\r
+#include "pccts_string.h"\r
+#include "pccts_stdio.h"\r
+#include "pccts_stdlib.h"\r
+\r
+PCCTS_NAMESPACE_STD\r
+\r
+// MR9 RJV (JVincent@novell.com) Not needed for variable length strings\r
+\r
+//// MR9 #ifndef ANTLRCommonTokenTEXTSIZE\r
+//// MR9 #define ANTLRCommonTokenTEXTSIZE 100\r
+//// MR9 #endif\r
+\r
+\r
+/* must define what a char looks like; can make this a class too */\r
+typedef char ANTLRChar;\r
+\r
+/* D E F I N E S M A R T P O I N T E R S */\r
+\r
+//#include ATOKPTR_H not tested yet, leave out\r
+class ANTLRAbstractToken;\r
+typedef ANTLRAbstractToken *_ANTLRTokenPtr;\r
+\r
+class ANTLRAbstractToken {\r
+public:\r
+ virtual ~ANTLRAbstractToken() {;}\r
+ virtual ANTLRTokenType getType() const = 0;\r
+ virtual void setType(ANTLRTokenType t) = 0;\r
+ virtual int getLine() const = 0;\r
+ virtual void setLine(int line) = 0;\r
+ virtual ANTLRChar *getText() const = 0;\r
+ virtual void setText(const ANTLRChar *) = 0;\r
+\r
+ /* This function will disappear when I can use templates */\r
+ virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,\r
+ ANTLRChar *text,\r
+ int line) = 0;\r
+\r
+ /* define to satisfy ANTLRTokenBuffer's need to determine whether or\r
+ not a token object can be destroyed. If nref()==0, no one has\r
+ a reference, and the object may be destroyed. This function defaults\r
+ to 1, hence, if you use deleteTokens() message with a token object\r
+ not derived from ANTLRCommonRefCountToken, the parser will compile\r
+ but will not delete objects after they leave the token buffer.\r
+ */\r
+\r
+ virtual unsigned nref() const { return 1; } // MR11\r
+ virtual void ref() {;}\r
+ virtual void deref() {;}\r
+\r
+ virtual void panic(const char *msg) // MR20 const\r
+ {\r
+ fprintf(stderr, "ANTLRAbstractToken panic: %s\n", msg);\r
+ exit(PCCTS_EXIT_FAILURE);\r
+ }\r
+};\r
+\r
+/* This class should be subclassed. It cannot store token type or text */\r
+\r
+class ANTLRRefCountToken : public ANTLRAbstractToken {\r
+public:\r
+#ifdef DBG_REFCOUNTTOKEN\r
+ static int ctor;\r
+ static int dtor;\r
+#endif\r
+protected:\r
+ unsigned refcnt_;\r
+#ifdef DBG_REFCOUNTTOKEN\r
+ char object[200];\r
+#endif\r
+\r
+public:\r
+ ANTLRRefCountToken(ANTLRTokenType t, const ANTLRChar *s)\r
+#ifndef DBG_REFCOUNTTOKEN\r
+ {\r
+ refcnt_ = 0;\r
+ }\r
+#else\r
+ {\r
+ ctor++;\r
+ refcnt_ = 0;\r
+ if ( t==1 ) sprintf(object,"tok_EOF");\r
+ else sprintf(object,"tok_%s",s);\r
+ fprintf(stderr, "ctor %s #%d\n",object,ctor);\r
+ }\r
+#endif\r
+ ANTLRRefCountToken()\r
+#ifndef DBG_REFCOUNTTOKEN\r
+ { refcnt_ = 0; }\r
+#else\r
+ {\r
+ ctor++;\r
+ refcnt_ = 0;\r
+ sprintf(object,"tok_blank");\r
+ fprintf(stderr, "ctor %s #%d\n",object,ctor);\r
+ }\r
+ virtual ~ANTLRRefCountToken()\r
+ {\r
+ dtor++;\r
+ if ( dtor>ctor ) fprintf(stderr, "WARNING: dtor>ctor\n");\r
+ fprintf(stderr, "dtor %s #%d\n", object, dtor);\r
+ object[0]='\0';\r
+ }\r
+#endif\r
+\r
+ // reference counting stuff needed by ANTLRTokenPtr.\r
+ // User should not access these; for C++ language reasons, we had\r
+ // to make these public. Yuck.\r
+\r
+ void ref() { refcnt_++; }\r
+ void deref() { refcnt_--; }\r
+ unsigned nref() const { return refcnt_; } // MR11\r
+\r
+ virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,\r
+ ANTLRChar *txt,\r
+ int line)\r
+ {\r
+ panic("call to ANTLRRefCountToken::makeToken()\n");\r
+ return NULL;\r
+ }\r
+};\r
+\r
+class ANTLRCommonNoRefCountToken : public ANTLRAbstractToken {\r
+protected:\r
+ ANTLRTokenType _type;\r
+ int _line;\r
+ ANTLRChar *_text; // MR9 RJV\r
+\r
+public:\r
+ ANTLRCommonNoRefCountToken(ANTLRTokenType t, const ANTLRChar *s)\r
+ { setType(t); _line = 0; _text = NULL; setText(s); }\r
+ ANTLRCommonNoRefCountToken()\r
+ { setType((ANTLRTokenType)0); _line = 0; _text = NULL; setText(""); }\r
+\r
+ ~ANTLRCommonNoRefCountToken() { if (_text) delete [] _text; } // MR9 RJV: Added Destructor to remove string\r
+\r
+ ANTLRTokenType getType() const { return _type; }\r
+ void setType(ANTLRTokenType t) { _type = t; }\r
+ virtual int getLine() const { return _line; }\r
+ void setLine(int line) { _line = line; }\r
+ ANTLRChar *getText() const { return _text; }\r
+ int getLength() const { return strlen(getText()); } // MR11\r
+\r
+// MR9 RJV: Added code for variable length strings to setText()\r
+\r
+ void setText(const ANTLRChar *s)\r
+ { if (s != _text) {\r
+ if (_text) delete [] _text;\r
+ if (s != NULL) {\r
+ _text = new ANTLRChar[strlen(s)+1];\r
+ if (_text == NULL) panic("ANTLRCommonNoRefCountToken::setText new failed");\r
+ strcpy(_text,s);\r
+ } else {\r
+ _text = new ANTLRChar[1];\r
+ if (_text == NULL) panic("ANTLRCommonNoRefCountToken::setText new failed");\r
+ strcpy(_text,"");\r
+ };\r
+ };\r
+ }\r
+\r
+ virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,\r
+ ANTLRChar *txt,\r
+ int line)\r
+ {\r
+ ANTLRAbstractToken *t = new ANTLRCommonNoRefCountToken;\r
+ t->setType(tt); t->setText(txt); t->setLine(line);\r
+ return t;\r
+ }\r
+\r
+// MR9 THM Copy constructor required when heap allocated string is used with copy semantics\r
+\r
+ ANTLRCommonNoRefCountToken (const ANTLRCommonNoRefCountToken& from) :\r
+ ANTLRAbstractToken(from) {\r
+ setType(from._type);\r
+ setLine(from._line);\r
+ _text=NULL;\r
+ setText(from._text);\r
+ };\r
+\r
+// MR9 THM operator =() required when heap allocated string is used with copy semantics\r
+\r
+ virtual ANTLRCommonNoRefCountToken& operator =(const ANTLRCommonNoRefCountToken& rhs) {\r
+\r
+////// MR15 WatCom can't hack use of operator =()\r
+////// Use this: *( (ANTRLAbstractToken *) this)=rhs;\r
+\r
+ *( (ANTLRAbstractToken *) this ) = rhs;\r
+\r
+ setType(rhs._type);\r
+ setLine(rhs._line);\r
+ setText(rhs._text);\r
+ return *this;\r
+ };\r
+};\r
+\r
+class ANTLRCommonToken : public ANTLRRefCountToken {\r
+protected:\r
+ ANTLRTokenType _type;\r
+ int _line;\r
+ ANTLRChar *_text; // MR9 RJV:Added\r
+\r
+public:\r
+ ANTLRCommonToken(ANTLRTokenType t, const ANTLRChar *s) : ANTLRRefCountToken(t,s)\r
+ { setType(t); _line = 0; _text = NULL; setText(s); } // MR9\r
+ ANTLRCommonToken()\r
+ { setType((ANTLRTokenType)0); _line = 0; _text = NULL; setText(""); } // MR9\r
+\r
+ virtual ~ANTLRCommonToken() { if (_text) delete [] _text; } // MR9 RJV: Added Destructor to remove string\r
+\r
+ ANTLRTokenType getType() const { return _type; }\r
+ void setType(ANTLRTokenType t) { _type = t; }\r
+ virtual int getLine() const { return _line; }\r
+ void setLine(int line) { _line = line; }\r
+ ANTLRChar *getText() const { return _text; }\r
+ int getLength() const { return strlen(getText()); } // MR11\r
+\r
+// MR9 RJV: Added code for variable length strings to setText()\r
+\r
+ void setText(const ANTLRChar *s)\r
+ { if (s != _text) {\r
+ if (_text) delete [] _text;\r
+ if (s != NULL) {\r
+ _text = new ANTLRChar[strlen(s)+1];\r
+ if (_text == NULL) panic("ANTLRCommonToken::setText new failed");\r
+ strcpy(_text,s);\r
+ } else {\r
+ _text = new ANTLRChar[1];\r
+ if (_text == NULL) panic("ANTLRCommonToken::setText new failed");\r
+ strcpy(_text,"");\r
+ };\r
+ };\r
+ }\r
+\r
+ virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,\r
+ ANTLRChar *txt,\r
+ int line)\r
+ {\r
+ ANTLRAbstractToken *t = new ANTLRCommonToken(tt,txt);\r
+ t->setLine(line);\r
+ return t;\r
+ }\r
+\r
+// MR9 THM Copy constructor required when heap allocated string is used with copy semantics\r
+\r
+ ANTLRCommonToken (const ANTLRCommonToken& from) :\r
+ ANTLRRefCountToken(from) {\r
+ setType(from._type);\r
+ setLine(from._line);\r
+ _text=NULL;\r
+ setText(from._text);\r
+ };\r
+\r
+// MR9 THM operator =() required when heap allocated string is used with copy semantics\r
+\r
+ virtual ANTLRCommonToken& operator =(const ANTLRCommonToken& rhs) {\r
+\r
+////// MR15 WatCom can't hack use of operator =()\r
+////// Use this instead: *( (ANTRLRRefCountToken *) this)=rhs;\r
+\r
+ *( (ANTLRRefCountToken *) this) = rhs;\r
+\r
+ setType(rhs._type);\r
+ setLine(rhs._line);\r
+ setText(rhs._text);\r
+ return *this;\r
+ };\r
+};\r
+\r
+// used for backward compatibility\r
+typedef ANTLRCommonToken ANTLRCommonBacktrackingToken;\r
+\r
+#endif\r
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