Davie added objectsPassingTest:

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@35731 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,9 @@
+2012-10-22  Thomas Davie <tom.davie@gmail.com>
+
+        * Headers/Foundation/NSSet.h:
+        * Source/NSSet.m:
+        Add -objectsPassingTest:
+
 2012-10-22  Rene Hexel <rhexel+savannah@mac.com>
 
         * Source/Additions/GSXML.m:

Headers/Foundation/NSSet.h

@@ -83,6 +83,8 @@ extern "C" {
 #if OS_API_VERSION(100600, GS_API_LATEST)
 
 DEFINE_BLOCK_TYPE(GSSetEnumeratorBlock, void, id, BOOL*);
+DEFINE_BLOCK_TYPE(GSSetFilterBlock, BOOL, id, BOOL*);
+
 /**
  * Enumerate over the collection using a given block.  The first argument is
  * the object.  The second argument is a pointer to a BOOL indicating
@@ -103,6 +105,12 @@ DEFINE_BLOCK_TYPE(GSSetEnumeratorBlock, void, id, BOOL*);
  */
 - (void) enumerateObjectsWithOptions: (NSEnumerationOptions)opts
                           usingBlock: (GSSetEnumeratorBlock)aBlock;
+
+- (NSSet *) objectsPassingTest: (GSSetFilterBlock)aBlock;
+
+- (NSSet *) objectsWithOptions: (NSEnumerationOptions)opts
+                   passingTest: (GSSetFilterBlock)aBlock;
+
 #endif
 
 #if OS_API_VERSION(100500,GS_API_LATEST) 

Source/NSSet.m

@@ -883,6 +883,38 @@ static Class NSMutableSet_concrete_class;
   GS_DISPATCH_TEARDOWN_QUEUE_AND_GROUP_FOR_ENUMERATION(enumQueue, opts)
 }
 
+- (NSSet *) objectsPassingTest: (GSSetFilterBlock)aBlock
+{
+  return [self objectsWithOptions: 0 passingTest: aBlock];
+}
+
+- (NSSet *) objectsWithOptions: (NSEnumerationOptions)opts
+                   passingTest: (GSSetFilterBlock)aBlock
+{
+  BOOL                  shouldStop = NO;
+  id<NSFastEnumeration> enumerator = self;
+  NSMutableSet          *resultSet;
+
+  resultSet = [NSMutableSet setWithCapacity: [self count]];
+    
+  FOR_IN (id, obj, enumerator)
+    {
+      BOOL include = CALL_BLOCK(aBlock, obj, &shouldStop);
+
+      if (include)
+        {
+          [resultSet addObject:obj];
+        }
+      if (shouldStop)
+        {
+          break;
+        }
+    }
+  END_FOR_IN(enumerator)
+    
+  return [resultSet makeImmutableCopyOnFail: NO];
+}
+
 /** Return a set formed by adding anObject to the receiver.
  */
 - (NSSet *) setByAddingObject: (id)anObject