X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firnodeset.h;h=2c298aa9b6794f6c4965363e98cbd1e720a3432b;hb=3c3425a50a1d721b74a015c6812257e32feeac85;hp=b97b042cda91bbbe657be43662d296b6c129bc36;hpb=10927999e0da0ff6e4b816018291eea9cc265a31;p=libfirm

diff --git a/ir/ir/irnodeset.h b/ir/ir/irnodeset.h
index b97b042cd..2c298aa9b 100644
--- a/ir/ir/irnodeset.h
+++ b/ir/ir/irnodeset.h
@@ -29,6 +29,7 @@
 #ifndef _FIRM_IRNODESET_H_
 #define _FIRM_IRNODESET_H_
 
+#include <stdbool.h>
 #include "firm_types.h"
 #include "xmalloc.h"
 
@@ -95,10 +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);
 
 
 /**
@@ -115,9 +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
@@ -157,9 +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