Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtcm/server/tree.h

@@ -0,0 +1,61 @@
+/* $XConsortium: tree.h /main/4 1995/11/09 12:53:31 rswiston $ */
+/*
+ *  (c) Copyright 1993, 1994 Hewlett-Packard Company
+ *  (c) Copyright 1993, 1994 International Business Machines Corp.
+ *  (c) Copyright 1993, 1994 Novell, Inc.
+ *  (c) Copyright 1993, 1994 Sun Microsystems, Inc.
+ */
+
+#ifndef _TREE_H
+#define _TREE_H
+
+#include "ansi_c.h"
+#include "data.h"
+
+/*
+**  2-3-4 tree, a.k.a. red-black tree
+*/
+
+typedef enum {red=0, black=1} Color;
+
+typedef struct node {
+	struct node *llink;
+	struct node *rlink;
+	Color	color;
+	caddr_t	data;
+} Tree_node;
+
+typedef struct {
+	Tree_node *root;
+	caddr_t private;	/* for internal tool state */
+} Rb_tree;
+
+extern Rb_tree* rb_create P((_DtCmsGetKeyProc, _DtCmsCompareProc));
+
+extern void rb_destroy P((Rb_tree*, _DtCmsEnumerateProc)); 
+
+extern int rb_size P((Rb_tree*t));
+
+extern Rb_Status rb_insert P((Rb_tree*, caddr_t data, caddr_t key)); 
+
+extern Rb_Status rb_insert_node P((Rb_tree*, Tree_node*, caddr_t key));
+
+extern Tree_node * rb_delete P((Rb_tree*, caddr_t key));
+
+extern caddr_t rb_lookup P((Rb_tree*, caddr_t key));
+
+extern caddr_t rb_lookup_next_larger P((Rb_tree*, caddr_t key));
+
+extern caddr_t rb_lookup_next_smaller P((Rb_tree*, caddr_t key));
+
+extern caddr_t rb_lookup_smallest P((Rb_tree*));
+
+extern caddr_t rb_lookup_largest P((Rb_tree*));
+
+extern Rb_Status rb_enumerate_up P((Rb_tree*, _DtCmsEnumerateProc));
+
+extern void rb_enumerate_down P((Rb_tree*, _DtCmsEnumerateProc));
+
+extern Rb_Status rb_check_tree P((Rb_tree *));
+
+#endif