Remove needless returns

components/gfx/font.rs

@@ -178,7 +178,7 @@ impl Font {
                status, tag.tag_to_str(),
                self.handle.family_name(), self.handle.face_name());
 
-        return result;
+        result
     }
 
     #[inline]

components/gfx/paint_context.rs

@@ -378,7 +378,7 @@ impl<'a> PaintContext<'a> {
         if discriminant == 0. {
             return (Some(x1), None);
         }
-        return (Some(x1), Some(x2));
+        (Some(x1), Some(x2))
     }
 
     fn intersect_ellipse_line(e: Ellipse, l: Line) -> (Option<Point2D<f32>>, Option<Point2D<f32>>) {
@@ -1013,16 +1013,16 @@ impl<'a> PaintContext<'a> {
         let left_top        = Point2D::new(rect.origin.x, rect.origin.y);
         let scaled_left_top = left_top + Point2D::new(scaled_border.left,
                                                       scaled_border.top);
-        return Rect::new(scaled_left_top,
-                         Size2D::new(rect.size.width - 2.0 * scaled_border.right,
-                                     rect.size.height - 2.0 * scaled_border.bottom));
+        Rect::new(scaled_left_top,
+                  Size2D::new(rect.size.width - 2.0 * scaled_border.right,
+                              rect.size.height - 2.0 * scaled_border.bottom))
     }
 
     fn scale_color(&self, color: Color, scale_factor: f32) -> Color {
-        return color::new(color.r * scale_factor,
-                          color.g * scale_factor,
-                          color.b * scale_factor,
-                          color.a);
+        color::new(color.r * scale_factor,
+                   color.g * scale_factor,
+                   color.b * scale_factor,
+                   color.a)
     }
 
     fn draw_double_border_segment(&self,

components/gfx/text/text_run.rs

@@ -164,7 +164,7 @@ impl<'a> TextRun {
             glyphs: Arc::new(glyphs),
             bidi_level: bidi_level,
         };
-        return run;
+        run
     }
 
     pub fn break_and_shape(font: &mut Font, text: &str, options: &ShapingOptions)

components/layout/css/matching.rs

@@ -113,7 +113,7 @@ impl<'a> PartialEq for ApplicableDeclarationsCacheQuery<'a> {
                 return false
             }
         }
-        return true
+        true
     }
 }
 impl<'a> Eq for ApplicableDeclarationsCacheQuery<'a> {}

components/script/dom/bindings/conversions.rs

@@ -661,7 +661,7 @@ unsafe fn get_dom_class(obj: *mut JSObject) -> Result<DOMClass, ()> {
         return Ok(*dom_class);
     }
     debug!("not a dom object");
-    return Err(());
+    Err(())
 }
 
 /// Get a `*const libc::c_void` for the given DOM object, unwrapping any

components/script/dom/bindings/proxyhandler.rs

@@ -87,14 +87,14 @@ pub unsafe extern fn prevent_extensions(_cx: *mut JSContext,
                                         _proxy: HandleObject,
                                         result: *mut ObjectOpResult) -> u8 {
     (*result).code_ = JSErrNum::JSMSG_CANT_PREVENT_EXTENSIONS as u32;
-    return JSTrue;
+    JSTrue
 }
 
 /// Reports whether the object is Extensible
 pub unsafe extern fn is_extensible(_cx: *mut JSContext, _proxy: HandleObject,
                                    succeeded: *mut u8) -> u8 {
     *succeeded = JSTrue;
-    return JSTrue;
+    JSTrue
 }
 
 /// Get the expando object, or null if there is none.
@@ -123,7 +123,7 @@ pub fn ensure_expando_object(cx: *mut JSContext, obj: HandleObject)
 
             SetProxyExtra(obj.get(), JSPROXYSLOT_EXPANDO, ObjectValue(&*expando));
         }
-        return expando;
+        expando
     }
 }
 

components/script/dom/bindings/utils.rs

@@ -381,7 +381,7 @@ fn create_interface_prototype_object(cx: *mut JSContext, global: HandleObject,
 pub unsafe extern fn throwing_constructor(cx: *mut JSContext, _argc: c_uint,
                                           _vp: *mut JSVal) -> u8 {
     throw_type_error(cx, "Illegal constructor.");
-    return 0;
+    0
 }
 
 /// An array of *mut JSObject of size PrototypeList::ID::Count
@@ -507,7 +507,7 @@ pub fn get_array_index_from_id(_cx: *mut JSContext, id: HandleId) -> Option<u32>
         if RUST_JSID_IS_INT(id) != 0 {
             return Some(RUST_JSID_TO_INT(id) as u32);
         }
-        return None;
+        None
     }
     // if id is length atom, -1, otherwise
     /*return if JSID_IS_ATOM(id) {
@@ -559,7 +559,7 @@ pub fn is_platform_object(obj: *mut JSObject) -> bool {
             clasp = js::jsapi::JS_GetClass(obj);
         }
         // TODO also check if JS_IsArrayBufferObject
-        return is_dom_class(&*clasp);
+        is_dom_class(&*clasp)
     }
 }
 
@@ -631,8 +631,8 @@ pub fn has_property_on_prototype(cx: *mut JSContext, proxy: HandleObject,
                                  id: HandleId) -> bool {
     //  MOZ_ASSERT(js::IsProxy(proxy) && js::GetProxyHandler(proxy) == handler);
     let mut found = false;
-    return !get_property_on_prototype(cx, proxy, id, &mut found,
-                                      MutableHandleValue { ptr: ptr::null_mut() }) || found;
+    !get_property_on_prototype(cx, proxy, id, &mut found,
+                               MutableHandleValue { ptr: ptr::null_mut() }) || found
 }
 
 /// Create a DOM global object with the given class.
@@ -812,11 +812,11 @@ pub fn validate_qualified_name(qualified_name: &str) -> ErrorResult {
     match xml_name_type(qualified_name) {
         XMLName::InvalidXMLName => {
             // Step 1.
-            return Err(Error::InvalidCharacter);
+            Err(Error::InvalidCharacter)
         },
         XMLName::Name => {
             // Step 2.
-            return Err(Error::Namespace);
+            Err(Error::Namespace)
         },
         XMLName::QName => Ok(())
     }

components/script/dom/blob.rs

@@ -37,7 +37,7 @@ pub struct Blob {
 fn is_ascii_printable(string: &DOMString) -> bool {
     // Step 5.1 in Sec 5.1 of File API spec
     // http://dev.w3.org/2006/webapi/FileAPI/#constructorBlob
-    return string.chars().all(|c| { c >= '\x20' && c <= '\x7E' })
+    string.chars().all(|c| { c >= '\x20' && c <= '\x7E' })
 }
 
 impl Blob {

components/script/dom/browsercontext.rs

@@ -177,7 +177,7 @@ unsafe extern fn hasOwn(cx: *mut JSContext, proxy: HandleObject, id: HandleId, b
     }
 
     *bp = (found != 0) as u8;
-    return JSTrue;
+    JSTrue
 }
 
 #[allow(unsafe_code)]

components/script/dom/dedicatedworkerglobalscope.rs

@@ -62,7 +62,7 @@ pub struct SendableWorkerScriptChan {
 
 impl ScriptChan for SendableWorkerScriptChan {
     fn send(&self, msg: CommonScriptMsg) -> Result<(), ()> {
-        return self.sender.send((self.worker.clone(), msg)).map_err(|_| ());
+        self.sender.send((self.worker.clone(), msg)).map_err(|_| ())
     }
 
     fn clone(&self) -> Box<ScriptChan + Send> {
@@ -84,9 +84,9 @@ pub struct WorkerThreadWorkerChan {
 
 impl ScriptChan for WorkerThreadWorkerChan {
     fn send(&self, msg: CommonScriptMsg) -> Result<(), ()> {
-        return self.sender
+        self.sender
             .send((self.worker.clone(), WorkerScriptMsg::Common(msg)))
-            .map_err(|_| ());
+            .map_err(|_| ())
     }
 
     fn clone(&self) -> Box<ScriptChan + Send> {

components/script/dom/keyboardevent.rs

@@ -155,7 +155,7 @@ impl KeyboardEvent {
         if self.meta.get() {
             result = result | constellation_msg::SUPER;
         }
-        return result;
+        result
     }
 }
 

components/script/dom/webglrenderingcontext.rs

@@ -881,7 +881,7 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
                 }
             },
 
-            _ => return self.webgl_error(InvalidEnum),
+            _ => self.webgl_error(InvalidEnum),
         }
     }
 
@@ -899,7 +899,7 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
                 }
             },
 
-            _ => return self.webgl_error(InvalidEnum),
+            _ => self.webgl_error(InvalidEnum),
         }
     }
 }

components/script/dom/webgltexture.rs

@@ -107,10 +107,10 @@ impl WebGLTexture {
                         self.renderer
                             .send(CanvasMsg::WebGL(CanvasWebGLMsg::TexParameteri(target, name, int_value)))
                             .unwrap();
-                        return Ok(());
+                        Ok(())
                     },
 
-                    _ => return Err(WebGLError::InvalidEnum),
+                    _ => Err(WebGLError::InvalidEnum),
                 }
             },
             constants::TEXTURE_MAG_FILTER => {
@@ -120,10 +120,10 @@ impl WebGLTexture {
                         self.renderer
                             .send(CanvasMsg::WebGL(CanvasWebGLMsg::TexParameteri(target, name, int_value)))
                             .unwrap();
-                        return Ok(());
+                        Ok(())
                     },
 
-                    _ => return Err(WebGLError::InvalidEnum),
+                    _ => Err(WebGLError::InvalidEnum),
                 }
             },
             constants::TEXTURE_WRAP_S |
@@ -135,14 +135,14 @@ impl WebGLTexture {
                         self.renderer
                             .send(CanvasMsg::WebGL(CanvasWebGLMsg::TexParameteri(target, name, int_value)))
                             .unwrap();
-                        return Ok(());
+                        Ok(())
                     },
 
-                    _ => return Err(WebGLError::InvalidEnum),
+                    _ => Err(WebGLError::InvalidEnum),
                 }
             },
 
-            _ => return Err(WebGLError::InvalidEnum),
+            _ => Err(WebGLError::InvalidEnum),
         }
     }
 }

components/script/script_task.rs

@@ -318,7 +318,7 @@ pub struct MainThreadScriptChan(pub Sender<MainThreadScriptMsg>);
 impl ScriptChan for MainThreadScriptChan {
     fn send(&self, msg: CommonScriptMsg) -> Result<(), ()> {
         let MainThreadScriptChan(ref chan) = *self;
-        return chan.send(MainThreadScriptMsg::Common(msg)).map_err(|_| ());
+        chan.send(MainThreadScriptMsg::Common(msg)).map_err(|_| ())
     }
 
     fn clone(&self) -> Box<ScriptChan + Send> {