Implement ToCss for Cursor and de-duplicate variants and string values.

components/style/properties/mod.rs.mako

@@ -159,40 +159,21 @@ pub mod longhands {
 
     <%def name="single_keyword_computed(name, values, experimental=False)">
         <%self:single_component_value name="${name}" experimental="${experimental}">
+            pub use self::computed_value::T as SpecifiedValue;
             ${caller.body()}
             pub mod computed_value {
-                use std::fmt;
-                #[allow(non_camel_case_types)]
-                #[deriving(PartialEq, Clone, FromPrimitive)]
-                pub enum T {
+                define_css_keyword_enum! { T:
                     % for value in values.split():
-                        ${to_rust_ident(value)},
+                        "${value}" => ${to_rust_ident(value)},
                     % endfor
                 }
-                impl fmt::Show for T {
-		    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-                        match self {
-                            % for value in values.split():
-                                &T::${to_rust_ident(value)} => write!(f, "${value}"),
-                            % endfor
-                        }
-                    }
-                }
             }
-            pub type SpecifiedValue = computed_value::T;
             #[inline] pub fn get_initial_value() -> computed_value::T {
                 T::${to_rust_ident(values.split()[0])}
             }
             pub fn from_component_value(v: &ComponentValue, _base_url: &Url)
                                         -> Result<SpecifiedValue, ()> {
-                get_ident_lower(v).and_then(|keyword| {
-                    match keyword.as_slice() {
-                        % for value in values.split():
-                            "${value}" => Ok(T::${to_rust_ident(value)}),
-                        % endfor
-                        _ => Err(()),
-                    }
-                })
+                computed_value::T::parse(v)
             }
         </%self:single_component_value>
     </%def>
@@ -1550,111 +1531,13 @@ pub mod longhands {
         pub fn from_component_value(value: &ComponentValue, _: &Url)
                                     -> Result<SpecifiedValue,()> {
             match value {
-                &Ident(ref value) if value.eq_ignore_ascii_case("auto") => Ok(T::AutoCursor),
-                &Ident(ref value) if value.eq_ignore_ascii_case("none") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NoCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("default") => {
-                    Ok(T::SpecifiedCursor(util_cursor::DefaultCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("pointer") => {
-                    Ok(T::SpecifiedCursor(util_cursor::PointerCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("context-menu") => {
-                    Ok(T::SpecifiedCursor(util_cursor::ContextMenuCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("help") => {
-                    Ok(T::SpecifiedCursor(util_cursor::HelpCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("progress") => {
-                    Ok(T::SpecifiedCursor(util_cursor::ProgressCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("wait") => {
-                    Ok(T::SpecifiedCursor(util_cursor::WaitCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("cell") => {
-                    Ok(T::SpecifiedCursor(util_cursor::CellCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("crosshair") => {
-                    Ok(T::SpecifiedCursor(util_cursor::CrosshairCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("text") => {
-                    Ok(T::SpecifiedCursor(util_cursor::TextCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("vertical-text") => {
-                    Ok(T::SpecifiedCursor(util_cursor::VerticalTextCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("alias") => {
-                    Ok(T::SpecifiedCursor(util_cursor::AliasCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("copy") => {
-                    Ok(T::SpecifiedCursor(util_cursor::CopyCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("move") => {
-                    Ok(T::SpecifiedCursor(util_cursor::MoveCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("no-drop") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NoDropCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("not-allowed") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NotAllowedCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("grab") => {
-                    Ok(T::SpecifiedCursor(util_cursor::GrabCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("grabbing") => {
-                    Ok(T::SpecifiedCursor(util_cursor::GrabbingCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("e-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::EResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("n-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("ne-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NeResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("nw-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NwResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("s-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::SResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("se-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::SeResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("sw-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::SwResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("w-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::WResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("ew-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::EwResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("ns-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NsResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("nesw-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NeswResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("nwse-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::NwseResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("col-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::ColResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("row-resize") => {
-                    Ok(T::SpecifiedCursor(util_cursor::RowResizeCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("all-scroll") => {
-                    Ok(T::SpecifiedCursor(util_cursor::AllScrollCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("zoom-in") => {
-                    Ok(T::SpecifiedCursor(util_cursor::ZoomInCursor))
-                }
-                &Ident(ref value) if value.eq_ignore_ascii_case("zoom-out") => {
-                    Ok(T::SpecifiedCursor(util_cursor::ZoomOutCursor))
+                &Ident(ref ident) => {
+                    if ident.eq_ignore_ascii_case("auto") {
+                        Ok(T::AutoCursor)
+                    } else {
+                        util_cursor::Cursor::from_css_keyword(ident.as_slice())
+                        .map(T::SpecifiedCursor)
+                    }
                 }
                 _ => Err(())
             }

components/util/cursor.rs

@@ -4,43 +4,73 @@
 
 //! A list of common mouse cursors per CSS3-UI § 8.1.1.
 
-#[deriving(Clone, PartialEq, FromPrimitive, Show)]
-#[repr(u8)]
-pub enum Cursor {
-    NoCursor = 0,
-    DefaultCursor = 1,
-    PointerCursor = 2,
-    ContextMenuCursor = 3,
-    HelpCursor = 4,
-    ProgressCursor = 5,
-    WaitCursor = 6,
-    CellCursor = 7,
-    CrosshairCursor = 8,
-    TextCursor = 9,
-    VerticalTextCursor = 10,
-    AliasCursor = 11,
-    CopyCursor = 12,
-    MoveCursor = 13,
-    NoDropCursor = 14,
-    NotAllowedCursor = 15,
-    GrabCursor = 16,
-    GrabbingCursor = 17,
-    EResizeCursor = 18,
-    NResizeCursor = 19,
-    NeResizeCursor = 20,
-    NwResizeCursor = 21,
-    SResizeCursor = 22,
-    SeResizeCursor = 23,
-    SwResizeCursor = 24,
-    WResizeCursor = 25,
-    EwResizeCursor = 26,
-    NsResizeCursor = 27,
-    NeswResizeCursor = 28,
-    NwseResizeCursor = 29,
-    ColResizeCursor = 30,
-    RowResizeCursor = 31,
-    AllScrollCursor = 32,
-    ZoomInCursor = 33,
-    ZoomOutCursor = 34,
+use cssparser::ToCss;
+use std::ascii::AsciiExt;
+use text_writer::TextWriter;
+
+
+macro_rules! define_cursor {
+    ($( $css: expr => $variant: ident = $value: expr, )+) => {
+        #[deriving(Clone, PartialEq, Eq, FromPrimitive, Show)]
+        #[repr(u8)]
+        pub enum Cursor {
+            $( $variant = $value ),+
+        }
+
+        impl Cursor {
+            pub fn from_css_keyword(keyword: &str) -> Result<Cursor, ()> {
+                match keyword.to_ascii_lower().as_slice() {
+                    $( concat!($css) => Ok(Cursor::$variant), )+
+                    _ => Err(())
+                }
+            }
+        }
+
+        impl ToCss for Cursor {
+            fn to_css<W>(&self, dest: &mut W) -> ::text_writer::Result where W: TextWriter {
+                match self {
+                    $( &Cursor::$variant => dest.write_str($css) ),+
+                }
+            }
+        }
+    }
 }
 
+
+define_cursor! {
+    "none" => NoCursor = 0,
+    "defalut" => DefaultCursor = 1,
+    "pointer" => PointerCursor = 2,
+    "context-menu" => ContextMenuCursor = 3,
+    "help" => HelpCursor = 4,
+    "progress" => ProgressCursor = 5,
+    "wait" => WaitCursor = 6,
+    "cell" => CellCursor = 7,
+    "crosshair" => CrosshairCursor = 8,
+    "text" => TextCursor = 9,
+    "vertical-text" => VerticalTextCursor = 10,
+    "alias" => AliasCursor = 11,
+    "copy" => CopyCursor = 12,
+    "move" => MoveCursor = 13,
+    "no-drop" => NoDropCursor = 14,
+    "not-allowed" => NotAllowedCursor = 15,
+    "grab" => GrabCursor = 16,
+    "grabbing" => GrabbingCursor = 17,
+    "e-resize" => EResizeCursor = 18,
+    "n-resize" => NResizeCursor = 19,
+    "ne-resize" => NeResizeCursor = 20,
+    "nw-resize" => NwResizeCursor = 21,
+    "s-resize" => SResizeCursor = 22,
+    "se-resize" => SeResizeCursor = 23,
+    "sw-resize" => SwResizeCursor = 24,
+    "w-resize" => WResizeCursor = 25,
+    "ew-resize" => EwResizeCursor = 26,
+    "ns-resize" => NsResizeCursor = 27,
+    "nesw-resize" => NeswResizeCursor = 28,
+    "nwse-resize" => NwseResizeCursor = 29,
+    "col-resize" => ColResizeCursor = 30,
+    "row-resize" => RowResizeCursor = 31,
+    "all-scroll" => AllScrollCursor = 32,
+    "zoom-in" => ZoomInCursor = 33,
+    "zoom-out" => ZoomOutCursor = 34,
+}

components/util/lib.rs

@@ -26,6 +26,7 @@ extern crate sync;
 #[cfg(target_os="macos")]
 extern crate task_info;
 extern crate "time" as std_time;
+extern crate text_writer;
 extern crate string_cache;
 extern crate unicode;
 extern crate url;