--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/anagram/support/pointer.h	Sat Dec 22 17:52:45 2007 -0500
@@ -0,0 +1,75 @@
+/*
+ * AnaGram, A System for Syntax Directed Programming
+ * Copyright 1997-2002 Parsifal Software. All Rights Reserved.
+ * See the file COPYING for license and usage terms.
+ *
+ * pointer.h
+ */
+
+#ifndef POINTER_H
+#define POINTER_H
+
+template <class T>
+class Pointer {
+private:
+  int *useCount;
+  T *item;
+
+public:
+  Pointer(T *i) : useCount(new int), item(i) { useCount = 1; }
+  Pointer(const Pointer<T> &x) : useCount(x.useCount), item(x.item) {
+    (*useCount)++;
+  }
+  Pointer<T> &operator = (const Pointer<T> &x) {
+    if (--(*useCount) == 0) {
+      // XXX doesn't this leak the usecount memory?
+      delete item;
+    }
+    useCount = x.useCount;
+    item = x.item;
+    (*useCount)++;
+  }
+  ~Pointer() {
+    if (--(*useCount) == 0) {
+      delete item;
+      delete useCount;
+    }
+  }
+  T *operator ->() { return item; }
+};
+
+template <class T>
+class ArrayPointer {
+private:
+  int *useCount;
+  T *array;
+
+public:
+  ArrayPointer(T *i) : useCount(new int), array(i) { *useCount = 1; }
+  ArrayPointer(const ArrayPointer<T> &x) : useCount(x.useCount),array(x.array){
+    (*useCount)++;
+  }
+  ArrayPointer<T> &operator = (const ArrayPointer<T> &x) {
+    if (--(*useCount) == 0) {
+      // XXX doesn't this leak the usecount memory?
+      delete [] array;
+    }
+    useCount = x.useCount;
+    array = x.array;
+    (*useCount)++;
+    return *this;
+  }
+  ~ArrayPointer() {
+    if (--(*useCount) == 0) {
+      delete [] array;
+      delete useCount;
+    }
+  }
+  const T &operator [] (const int x) const { return array[x]; }
+  T &operator [] (const int x) { return array[x]; }
+  operator const T *() const { return array; }
+  operator T *() { return array; }
+};
+
+
+#endif /* POINTER_H */