--- /dev/null
+/* ATokPtr.C
+ *
+ * ANTLRToken MUST be defined before entry to this file.
+ *
+ * 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
+ * Written by Russell Quong June 30, 1995
+ * Adapted by Terence Parr to ANTLR stuff
+ * Parr Research Corporation
+ * with Purdue University and AHPCRC, University of Minnesota
+ * 1989-1995
+ */
+
+#include "ATokPtr.h"
+
+void ANTLRTokenPtr::ref() const
+{
+ if (ptr_ != NULL) {
+ ptr_->ref();
+ }
+}
+
+#include <stdio.h>
+
+void ANTLRTokenPtr::deref()
+{
+ if (ptr_ != NULL)
+ {
+ ptr_->deref();
+ if ( ptr_->nref()==0 )
+ {
+ delete ptr_;
+ ptr_ = NULL;
+ }
+ }
+}
+
+ANTLRTokenPtr::~ANTLRTokenPtr()
+{
+ deref();
+}
+
+void ANTLRTokenPtr::operator = (const ANTLRTokenPtr lhs)
+{
+ lhs.ref(); // protect against "xp = xp"; ie same underlying object
+ deref();
+ ptr_ = lhs.ptr_;
+}
+
+void ANTLRTokenPtr::operator = (ANTLRAbstractToken *addr)
+{
+ if (addr != NULL) {
+ addr->ref();
+ }
+ deref();
+ ptr_ = addr;
+}