--- /dev/null
+/* ANTLRToken.h
+ *
+ * SOFTWARE RIGHTS
+ *
+ * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
+ * Set (PCCTS) -- PCCTS is in the public domain. An individual or
+ * company may do whatever they wish with source code distributed with
+ * PCCTS or the code generated by PCCTS, including the incorporation of
+ * PCCTS, or its output, into commerical software.
+ *
+ * We encourage users to develop software with PCCTS. However, we do ask
+ * that credit is given to us for developing PCCTS. By "credit",
+ * we mean that if you incorporate our source code into one of your
+ * programs (commercial product, research project, or otherwise) that you
+ * acknowledge this fact somewhere in the documentation, research report,
+ * etc... If you like PCCTS and have developed a nice tool with the
+ * output, please mention that you developed it using PCCTS. In
+ * addition, we ask that this header remain intact in our source code.
+ * As long as these guidelines are kept, we expect to continue enhancing
+ * this system and expect to make other tools available as they are
+ * completed.
+ *
+ * ANTLR 1.33
+ * Terence Parr
+ * Parr Research Corporation
+ * with Purdue University and AHPCRC, University of Minnesota
+ * 1989-1995
+ */
+
+#ifndef ATOKEN_H_GATE
+#define ATOKEN_H_GATE
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifndef ANTLRCommonTokenTEXTSIZE
+#define ANTLRCommonTokenTEXTSIZE 100
+#endif
+
+#ifdef DBG_REFCOUNTTOKEN
+#include <stdio.h>
+#endif
+
+/* must define what a char looks like; can make this a class too */
+typedef char ANTLRChar;
+
+/* D E F I N E S M A R T P O I N T E R S */
+#include "config.h"
+//#include ATOKPTR_H not tested yet, leave out
+class ANTLRAbstractToken;
+typedef ANTLRAbstractToken *_ANTLRTokenPtr;
+
+class ANTLRAbstractToken {
+public:
+ virtual ~ANTLRAbstractToken() {;}
+ virtual ANTLRTokenType getType() = 0;
+ virtual void setType(ANTLRTokenType t) = 0;
+ virtual int getLine() = 0;
+ virtual void setLine(int line) = 0;
+ virtual ANTLRChar *getText() = 0;
+ virtual void setText(ANTLRChar *) = 0;
+
+ /* This function will disappear when I can use templates */
+ virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
+ ANTLRChar *text,
+ int line) = 0;
+
+ /* define to satisfy ANTLRTokenBuffer's need to determine whether or
+ not a token object can be destroyed. If nref()==0, no one has
+ a reference, and the object may be destroyed. This function defaults
+ to 1, hence, if you use deleteTokens() message with a token object
+ not derived from ANTLRCommonRefCountToken, the parser will compile
+ but will not delete objects after they leave the token buffer.
+ */
+ virtual unsigned nref() { return 1; }
+ virtual void ref() {;}
+ virtual void deref() {;}
+
+ virtual void panic(char *msg)
+ {
+ fprintf(stderr, "ANTLRAbstractToken panic: %s\n", msg);
+ exit(PCCTS_EXIT_FAILURE);
+ }
+};
+
+/* This class should be subclassed. It cannot store token type or text */
+
+class ANTLRRefCountToken : public ANTLRAbstractToken {
+public:
+#ifdef DBG_REFCOUNTTOKEN
+ static int ctor;
+ static int dtor;
+#endif
+protected:
+ unsigned refcnt_;
+#ifdef DBG_REFCOUNTTOKEN
+ char object[200];
+#endif
+
+public:
+ ANTLRRefCountToken(ANTLRTokenType t, ANTLRChar *s)
+#ifndef DBG_REFCOUNTTOKEN
+ {
+ refcnt_ = 0;
+ }
+#else
+ {
+ ctor++;
+ refcnt_ = 0;
+ if ( t==1 ) sprintf(object,"tok_EOF");
+ else sprintf(object,"tok_%s",s);
+ fprintf(stderr, "ctor %s #%d\n",object,ctor);
+ }
+#endif
+ ANTLRRefCountToken()
+#ifndef DBG_REFCOUNTTOKEN
+ { refcnt_ = 0; }
+#else
+ {
+ ctor++;
+ refcnt_ = 0;
+ sprintf(object,"tok_blank");
+ fprintf(stderr, "ctor %s #%d\n",object,ctor);
+ }
+ virtual ~ANTLRRefCountToken()
+ {
+ dtor++;
+ if ( dtor>ctor ) fprintf(stderr, "WARNING: dtor>ctor\n");
+ fprintf(stderr, "dtor %s #%d\n", object, dtor);
+ object[0]='\0';
+ }
+#endif
+
+ // reference counting stuff needed by ANTLRTokenPtr.
+ // User should not access these; for C++ language reasons, we had
+ // to make these public. Yuck.
+ void ref() { refcnt_++; }
+ void deref() { refcnt_--; }
+ unsigned nref() { return refcnt_; }
+
+ virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
+ ANTLRChar *txt,
+ int line)
+ {
+ panic("call to ANTLRRefCountToken::makeToken()\n");
+ return NULL;
+ }
+};
+
+class ANTLRCommonNoRefCountToken : public ANTLRAbstractToken {
+protected:
+ ANTLRTokenType _type;
+ int _line;
+ ANTLRChar _text[ANTLRCommonTokenTEXTSIZE+1];
+
+public:
+ ANTLRCommonNoRefCountToken(ANTLRTokenType t, ANTLRChar *s)
+ { setType(t); _line = 0; setText(s); }
+ ANTLRCommonNoRefCountToken()
+ { setType((ANTLRTokenType)0); _line = 0; setText(""); }
+
+ ANTLRTokenType getType() { return _type; }
+ void setType(ANTLRTokenType t) { _type = t; }
+ virtual int getLine() { return _line; }
+ void setLine(int line) { _line = line; }
+ ANTLRChar *getText() { return _text; }
+ void setText(ANTLRChar *s)
+ { strncpy((char *)_text, (char *)s, ANTLRCommonTokenTEXTSIZE); }
+ virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
+ ANTLRChar *txt,
+ int line)
+ {
+ ANTLRAbstractToken *t = new ANTLRCommonNoRefCountToken;
+ t->setType(tt); t->setText(txt); t->setLine(line);
+ return t;
+ }
+};
+
+class ANTLRCommonToken : public ANTLRRefCountToken {
+protected:
+ ANTLRTokenType _type;
+ int _line;
+ ANTLRChar _text[ANTLRCommonTokenTEXTSIZE+1];
+
+public:
+ ANTLRCommonToken(ANTLRTokenType t, ANTLRChar *s) : ANTLRRefCountToken(t,s)
+ { setType(t); _line = 0; setText(s); }
+ ANTLRCommonToken()
+ { setType((ANTLRTokenType)0); _line = 0; setText(""); }
+ virtual ~ANTLRCommonToken() {;}
+
+ ANTLRTokenType getType() { return _type; }
+ void setType(ANTLRTokenType t) { _type = t; }
+ virtual int getLine() { return _line; }
+ void setLine(int line) { _line = line; }
+ ANTLRChar *getText() { return _text; }
+ void setText(ANTLRChar *s)
+ { strncpy((char *)_text, (char *)s, ANTLRCommonTokenTEXTSIZE); }
+ virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
+ ANTLRChar *txt,
+ int line)
+ {
+ ANTLRAbstractToken *t = new ANTLRCommonToken(tt,txt);
+ t->setLine(line);
+ return t;
+ }
+};
+
+// used for backward compatibility
+typedef ANTLRCommonToken ANTLRCommonBacktrackingToken;
+
+#endif
projects / pccts / blobdiff