style: Use cbindgen for text-overflow.

Differential Revision: https://phabricator.services.mozilla.com/D32285

components/style/properties/gecko.mako.rs

@@ -3342,83 +3342,7 @@ fn static_assert() {
 
 </%self:impl_trait>
 
-<%self:impl_trait style_struct_name="Text"
+<%self:impl_trait style_struct_name="Text" skip_longhands="initial-letter">
-                  skip_longhands="text-overflow initial-letter">
-
-    fn clear_overflow_sides_if_string(&mut self) {
-        use crate::gecko_bindings::structs::nsStyleTextOverflowSide;
-        fn clear_if_string(side: &mut nsStyleTextOverflowSide) {
-            if side.mType == structs::NS_STYLE_TEXT_OVERFLOW_STRING as u8 {
-                side.mString.truncate();
-                side.mType = structs::NS_STYLE_TEXT_OVERFLOW_CLIP as u8;
-            }
-        }
-        clear_if_string(&mut self.gecko.mTextOverflow.mLeft);
-        clear_if_string(&mut self.gecko.mTextOverflow.mRight);
-    }
-
-    pub fn set_text_overflow(&mut self, v: longhands::text_overflow::computed_value::T) {
-        use crate::gecko_bindings::structs::nsStyleTextOverflowSide;
-        use crate::values::specified::text::TextOverflowSide;
-
-        fn set(side: &mut nsStyleTextOverflowSide, value: &TextOverflowSide) {
-            let ty = match *value {
-                TextOverflowSide::Clip => structs::NS_STYLE_TEXT_OVERFLOW_CLIP,
-                TextOverflowSide::Ellipsis => structs::NS_STYLE_TEXT_OVERFLOW_ELLIPSIS,
-                TextOverflowSide::String(ref s) => {
-                    side.mString.assign_str(s);
-                    structs::NS_STYLE_TEXT_OVERFLOW_STRING
-                }
-            };
-            side.mType = ty as u8;
-        }
-
-        self.clear_overflow_sides_if_string();
-        self.gecko.mTextOverflow.mLogicalDirections = v.sides_are_logical;
-
-        set(&mut self.gecko.mTextOverflow.mLeft, &v.first);
-        set(&mut self.gecko.mTextOverflow.mRight, &v.second);
-    }
-
-    pub fn copy_text_overflow_from(&mut self, other: &Self) {
-        use crate::gecko_bindings::structs::nsStyleTextOverflowSide;
-        fn set(side: &mut nsStyleTextOverflowSide, other: &nsStyleTextOverflowSide) {
-            if other.mType == structs::NS_STYLE_TEXT_OVERFLOW_STRING as u8 {
-                side.mString.assign(&*other.mString)
-            }
-            side.mType = other.mType
-        }
-        self.clear_overflow_sides_if_string();
-        set(&mut self.gecko.mTextOverflow.mLeft, &other.gecko.mTextOverflow.mLeft);
-        set(&mut self.gecko.mTextOverflow.mRight, &other.gecko.mTextOverflow.mRight);
-        self.gecko.mTextOverflow.mLogicalDirections = other.gecko.mTextOverflow.mLogicalDirections;
-    }
-
-    pub fn reset_text_overflow(&mut self, other: &Self) {
-        self.copy_text_overflow_from(other)
-    }
-
-    pub fn clone_text_overflow(&self) -> longhands::text_overflow::computed_value::T {
-        use crate::gecko_bindings::structs::nsStyleTextOverflowSide;
-        use crate::values::specified::text::TextOverflowSide;
-
-        fn to_servo(side: &nsStyleTextOverflowSide) -> TextOverflowSide {
-            match side.mType as u32 {
-                structs::NS_STYLE_TEXT_OVERFLOW_CLIP => TextOverflowSide::Clip,
-                structs::NS_STYLE_TEXT_OVERFLOW_ELLIPSIS => TextOverflowSide::Ellipsis,
-                structs::NS_STYLE_TEXT_OVERFLOW_STRING =>
-                    TextOverflowSide::String(side.mString.to_string().into_boxed_str()),
-                _ => panic!("Found unexpected value in style struct for text_overflow property"),
-            }
-        }
-
-        longhands::text_overflow::computed_value::T {
-            first: to_servo(&self.gecko.mTextOverflow.mLeft),
-            second: to_servo(&self.gecko.mTextOverflow.mRight),
-            sides_are_logical: self.gecko.mTextOverflow.mLogicalDirections
-        }
-    }
-
     pub fn set_initial_letter(&mut self, v: longhands::initial_letter::computed_value::T) {
         use crate::values::generics::text::InitialLetter;
         match v {

components/style/values/computed/text.rs

@@ -105,6 +105,7 @@ impl ToComputedValue for specified::WordSpacing {
 pub type LineHeight = GenericLineHeight<NonNegativeNumber, NonNegativeLength>;
 
 #[derive(Clone, Debug, MallocSizeOf, PartialEq, ToResolvedValue)]
+#[repr(C)]
 /// text-overflow.
 /// When the specified value only has one side, that's the "second"
 /// side, and the sides are logical, so "second" means "end".  The

components/style/values/specified/text.rs

@@ -134,14 +134,16 @@ impl ToComputedValue for LineHeight {
 }
 
 /// A generic value for the `text-overflow` property.
+/// cbindgen:derive-tagged-enum-copy-constructor=true
 #[derive(Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss, ToShmem)]
+#[repr(C, u8)]
 pub enum TextOverflowSide {
     /// Clip inline content.
     Clip,
     /// Render ellipsis to represent clipped inline content.
     Ellipsis,
     /// Render a given string to represent clipped inline content.
-    String(Box<str>),
+    String(crate::OwnedStr),
 }
 
 impl Parse for TextOverflowSide {
@@ -161,7 +163,7 @@ impl Parse for TextOverflowSide {
                 }
             },
             Token::QuotedString(ref v) => Ok(TextOverflowSide::String(
-                v.as_ref().to_owned().into_boxed_str(),
+                v.as_ref().to_owned().into(),
             )),
             ref t => Err(location.new_unexpected_token_error(t.clone())),
         }