1 files changed, 31 insertions, 0 deletions
diff --git a/platform/darwin/src/CFHandle.hpp b/platform/darwin/src/CFHandle.hpp
new file mode 100644
index 0000000000..edcc9aafdf
--- /dev/null
+++ b/platform/darwin/src/CFHandle.hpp
@@ -0,0 +1,31 @@
+#pragma once
+
+/*
+  CFHandle is a minimal wrapper designed to hold and release CoreFoundation-style handles
+  It is non-transferrable: wrap it in something like a unique_ptr if you need to pass it around,
+  or just use unique_ptr with a custom deleter.
+  CFHandle has no special treatment for null handles -- be careful not to let it hold a null
+  handle if the behavior of the Releaser isn't defined for null.
+ 
+  ex:
+   using CFDataHandle = CFHandle<CFDataRef, CFTypeRef, CFRelease>;
+ 
+   CFDataHandle data(CFDataCreateWithBytesNoCopy(
+        kCFAllocatorDefault, reinterpret_cast<const unsigned char*>(source.data()), source.size(),
+        kCFAllocatorNull));
+*/
+
+namespace {
+
+template <typename HandleType, typename ReleaserArgumentType, void (*Releaser)(ReleaserArgumentType)>
+struct CFHandle {
+    CFHandle(HandleType handle_): handle(handle_) {}
+    ~CFHandle() { Releaser(handle); }
+    HandleType operator*() { return handle; }
+    operator bool() { return handle; }
+private:
+    HandleType handle;
+};
+
+} // namespace
+