--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/anagram/support/bitmap.h	Sat Dec 22 17:52:45 2007 -0500
@@ -0,0 +1,58 @@
+/*
+ * AnaGram, A System for Syntax Directed Programming
+ * Copyright 1993-2000 Parsifal Software. All Rights Reserved.
+ * See the file COPYING for license and usage terms.
+ *
+ * bitmap.h
+ */
+
+#ifndef BITMAP_H
+#define BITMAP_H
+
+#include <string.h>
+#include "port.h"
+
+#include "data.h" // sigh... XXX   (for n_chars)
+#include "pointer.h"
+
+
+class Bitmap {
+protected:
+  unsigned nChars;
+  unsigned int nBits;
+
+  ArrayPointer<unsigned char> map;
+
+public:
+  Bitmap(int n) : nChars((n+7)/8), nBits(n), map(new unsigned char[nChars]) {
+    memset(map, 0, nChars);
+  }
+  virtual ~Bitmap() {}
+  virtual int setBit(int x);
+  virtual int getBit(int x);
+  virtual int list(int *x);
+  virtual Bitmap &setRange(unsigned first, unsigned last);
+  Bitmap &operator |= (const Bitmap &b);
+  Bitmap &operator &= (const Bitmap &b);
+  Bitmap &operator -= (const Bitmap &b);
+  Bitmap &operator ~ ();
+};
+
+class CharBitmap : public Bitmap {
+public:
+  CharBitmap() : Bitmap(n_chars) {}
+  CharBitmap(const Bitmap &b) : Bitmap(b) {}
+  virtual int setBit(int x);
+  virtual int getBit(int x);
+  virtual int list(int *x);
+#ifdef _MSC_VER
+  virtual Bitmap &setRange(unsigned first, unsigned last);
+#else
+  virtual CharBitmap &setRange(unsigned first, unsigned last);
+#endif
+  void blurCase();
+  void blurCase(int);
+};
+
+
+#endif /* BITMAP_H */