1 files changed, 32 insertions, 0 deletions
diff --git a/maildrop/reeval.h b/maildrop/reeval.h
new file mode 100644
index 0000000..37d59a8
--- /dev/null
+++ b/maildrop/reeval.h
@@ -0,0 +1,32 @@
+#ifndef	reeval_h
+#define	reeval_h
+
+
+#include	"regexpnode.h"
+
+///////////////////////////////////////////////////////////////////////////
+//
+//  For matching a regular expression, we keep track of the set of all the
+//  current nodes we're currently on.  For speed, there are two ReEval
+//  objects - current one, and the next one, and we switch between the two
+//  on each step.
+//
+///////////////////////////////////////////////////////////////////////////
+
+
+class ReEval {
+public:
+	RegExpNode **nodes;
+	unsigned	numnodes;
+	unsigned	*nodenums;	// For speed - lookup array of nodes
+				// that are already in this set.
+	ReEval() : nodes(0), numnodes(0), nodenums(0), arysize(0) {}
+	~ReEval()	{ if (nodes)	delete[] nodes;
+			if (nodenums)	delete[] nodenums;
+			}
+	void	init(unsigned maxsize);
+private:
+	unsigned	arysize;
+} ;
+
+#endif