style: Add an Atom::from_addrefed function.

servo · Apr 5, 2017 · f3dcef8 · f3dcef8
1 parent 1071c33
commit f3dcef8
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/components/style/gecko_string_cache/mod.rs b/components/style/gecko_string_cache/mod.rs
@@ -198,6 +198,16 @@ impl Atom {
                       "Called from_static for a non-static atom!");
         atom
     }
+
+    /// Creates an atom from a dynamic atom pointer that has already had AddRef
+    /// called on it.
+    #[inline]
+    pub unsafe fn from_addrefed(ptr: *mut nsIAtom) -> Self {
+        debug_assert!(!ptr.is_null());
+        unsafe {
+            Atom(WeakAtom::new(ptr))
+        }
+    }
 }
 
 impl Hash for Atom {