X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firnodeset.h;h=2c298aa9b6794f6c4965363e98cbd1e720a3432b;hb=2f8553d98a05815a9d24eb5746cab1e17858a2a0;hp=330caa620ae3762bb2cbb6a834763e34e1f6b7a7;hpb=1a3b7d363474ab544c13093a2f0b578718d37c7a;p=libfirm

diff --git a/ir/ir/irnodeset.h b/ir/ir/irnodeset.h
index 330caa620..2c298aa9b 100644
--- a/ir/ir/irnodeset.h
+++ b/ir/ir/irnodeset.h
@@ -23,26 +23,16 @@
  * @date      30.03.2007
  * @brief     A nodeset. This should be prefered over a simple pset, because it
  *            tries to guarantee deterministic behavior. (and is faster)
- * @version   $Id$
  * @note      Actually the bits to make the behaviour deterministic are not
  *            implemented yet...
  */
 #ifndef _FIRM_IRNODESET_H_
 #define _FIRM_IRNODESET_H_
 
+#include <stdbool.h>
 #include "firm_types.h"
 #include "xmalloc.h"
 
-/*
- * sebastian experimental:
- * use ordered arrays as node sets.
- * the guys here have made good experiences with that.
- * Internally we use normal Firm arrays and binary
- * search for locating the elements. Using arrays should
- * give the sets a small footprint.
- */
-#undef  IR_NODESET_USE_ORDERED_SETS
-
 #define HashSet          ir_nodeset_t
 #define HashSetIterator  ir_nodeset_iterator_t
 #define ValueType        ir_node*
@@ -106,10 +96,10 @@ static inline void ir_nodeset_del(ir_nodeset_t *nodeset) {
  *
  * @param nodeset   Pointer to the nodeset
  * @param node      node to insert into the nodeset
- * @returns         1 if the element has been inserted,
- *                  0 if it was already there
+ * @returns         true if the element has been inserted,
+ *                  false if it was already there
  */
-int ir_nodeset_insert(ir_nodeset_t *nodeset, ir_node *node);
+bool ir_nodeset_insert(ir_nodeset_t *nodeset, ir_node *node);
 
 
 /**
@@ -126,9 +116,8 @@ void ir_nodeset_remove(ir_nodeset_t *nodeset, const ir_node *node);
  *
  * @param nodeset   Pointer to the nodeset
  * @param node      The pointer to find
- * @returns         1 if nodeset contains the node, 0 else
  */
-int ir_nodeset_contains(const ir_nodeset_t *nodeset, const ir_node *node);
+bool ir_nodeset_contains(const ir_nodeset_t *nodeset, const ir_node *node);
 
 /**
  * Returns the number of pointers contained in the nodeset
@@ -168,9 +157,17 @@ ir_node *ir_nodeset_iterator_next(ir_nodeset_iterator_t *iterator);
 void ir_nodeset_remove_iterator(ir_nodeset_t *nodeset,
                                 const ir_nodeset_iterator_t *iterator);
 
+static inline ir_node *ir_nodeset_first(ir_nodeset_t const *const nodeset)
+{
+	ir_nodeset_iterator_t iter;
+	ir_nodeset_iterator_init(&iter, nodeset);
+	return ir_nodeset_iterator_next(&iter);
+}
+
 #define foreach_ir_nodeset(nodeset, irn, iter) \
-	for(ir_nodeset_iterator_init(&iter, nodeset), \
-        irn = ir_nodeset_iterator_next(&iter);    \
-		irn != NULL; irn = ir_nodeset_iterator_next(&iter))
+	for (bool irn##__once = true; irn##__once;) \
+		for (ir_nodeset_iterator_t iter; irn##__once;) \
+			for (ir_node *irn; irn##__once; irn##__once = false) \
+				for (ir_nodeset_iterator_init(&iter, nodeset); (irn = ir_nodeset_iterator_next(&iter));)
 
 #endif