1 files changed, 72 insertions, 0 deletions
diff --git a/WebCore/platform/mac/FoundationExtras.h b/WebCore/platform/mac/FoundationExtras.h
new file mode 100644
index 0000000..51a7df0
--- /dev/null
+++ b/WebCore/platform/mac/FoundationExtras.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2004 Apple Computer, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// nil-checked CFRetain/CFRelease covers for Objective-C ids
+
+// Use CFRetain, CFRelease, HardRetain, or HardRelease instead of
+// -[NSObject retain] and -[NSObject release] if you want to store
+// a pointer to an Objective-C object into memory that won't
+// be scanned for GC, like a C++ object.
+
+static inline id HardRetain(id obj)
+{
+    if (obj) CFRetain(obj);
+    return obj;
+}
+
+static inline void HardRelease(id obj)
+{
+    if (obj) CFRelease(obj);
+}
+
+// As if CF and Foundation had logically separate reference counts,
+// this function first increments the CF retain count, and then
+// decrements the NS retain count. This is needed to handle cases where
+// -retain/-release aren't equivalent to CFRetain/HardRelease, such as
+// when GC is used.
+
+// Use HardRetainWithNSRelease after allocating and initializing a NSObject
+// if you want to store a pointer to that object into memory that won't
+// be scanned for GC, like a C++ object.
+
+static inline id HardRetainWithNSRelease(id obj)
+{
+    HardRetain(obj);
+    [obj release];
+    return obj;
+}
+
+// Use HardAutorelease to return an object made by a CoreFoundation
+// "create" or "copy" function as an autoreleased and garbage collected
+// object. CF objects need to be "made collectable" for autorelease to work
+// properly under GC.
+
+static inline id HardAutorelease(CFTypeRef obj)
+{
+    if (obj)
+        CFMakeCollectable(obj);
+    [(id)obj autorelease];
+    return (id)obj;
+}