Miscellaneous build / tidy fixes.

components/style/values/mod.rs

@@ -68,7 +68,7 @@ pub fn serialize_atom_identifier<Static, W>(
     dest: &mut W,
 ) -> fmt::Result
 where
-    Static: ::string_cache::StaticAtomSet,
+    Static: string_cache::StaticAtomSet,
     W: Write,
 {
     serialize_identifier(&ident, dest)
@@ -90,7 +90,7 @@ pub fn serialize_atom_name<Static, W>(
     dest: &mut W,
 ) -> fmt::Result
 where
-    Static: ::string_cache::StaticAtomSet,
+    Static: string_cache::StaticAtomSet,
     W: Write,
 {
     serialize_name(&ident, dest)
@@ -114,13 +114,27 @@ where
 )]
 pub struct AtomString(pub Atom);
 
+#[cfg(feature = "servo")]
+impl AsRef<str> for AtomString {
+    fn as_ref(&self) -> &str {
+        &*self.0
+    }
+}
+
 impl cssparser::ToCss for AtomString {
     fn to_css<W>(&self, dest: &mut W) -> fmt::Result
     where
         W: Write,
     {
-        self.0
-            .with_str(|s| cssparser::CssStringWriter::new(dest).write_str(s))
+        #[cfg(feature = "servo")]
+        {
+            cssparser::CssStringWriter::new(dest).write_str(self.as_ref())
+        }
+        #[cfg(feature = "gecko")]
+        {
+            self.0
+                .with_str(|s| cssparser::CssStringWriter::new(dest).write_str(s))
+        }
     }
 }
 
@@ -138,24 +152,138 @@ impl<'a> From<&'a str> for AtomString {
     }
 }
 
+/// A generic CSS `<ident>` stored as an `Atom`.
+#[cfg(feature = "servo")]
+#[repr(transparent)]
+#[derive(Deref)]
+pub struct GenericAtomIdent<Set>(pub string_cache::Atom<Set>)
+where
+    Set: string_cache::StaticAtomSet;
+
+/// A generic CSS `<ident>` stored as an `Atom`, for the default atom set.
+#[cfg(feature = "servo")]
+pub type AtomIdent = GenericAtomIdent<servo_atoms::AtomStaticSet>;
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> style_traits::SpecifiedValueInfo for GenericAtomIdent<Set> {}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> Default for GenericAtomIdent<Set> {
+    fn default() -> Self {
+        Self(string_cache::Atom::default())
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> std::fmt::Debug for GenericAtomIdent<Set> {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> std::hash::Hash for GenericAtomIdent<Set> {
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        self.0.hash(state)
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> Eq for GenericAtomIdent<Set> {}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> PartialEq for GenericAtomIdent<Set> {
+    fn eq(&self, other: &Self) -> bool {
+        self.0 == other.0
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> Clone for GenericAtomIdent<Set> {
+    fn clone(&self) -> Self {
+        Self(self.0.clone())
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> to_shmem::ToShmem for GenericAtomIdent<Set> {
+    fn to_shmem(&self, builder: &mut to_shmem::SharedMemoryBuilder) -> to_shmem::Result<Self> {
+        use std::mem::ManuallyDrop;
+
+        let atom = self.0.to_shmem(builder)?;
+        Ok(ManuallyDrop::new(Self(ManuallyDrop::into_inner(atom))))
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> malloc_size_of::MallocSizeOf for GenericAtomIdent<Set> {
+    fn size_of(&self, ops: &mut malloc_size_of::MallocSizeOfOps) -> usize {
+        self.0.size_of(ops)
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> cssparser::ToCss for GenericAtomIdent<Set> {
+    fn to_css<W>(&self, dest: &mut W) -> fmt::Result
+    where
+        W: Write,
+    {
+        serialize_atom_identifier(&self.0, dest)
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> PrecomputedHash for GenericAtomIdent<Set> {
+    #[inline]
+    fn precomputed_hash(&self) -> u32 {
+        self.0.precomputed_hash()
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<'a, Set: string_cache::StaticAtomSet> From<&'a str> for GenericAtomIdent<Set> {
+    #[inline]
+    fn from(string: &str) -> Self {
+        Self(string_cache::Atom::from(string))
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> std::borrow::Borrow<string_cache::Atom<Set>>
+    for GenericAtomIdent<Set>
+{
+    #[inline]
+    fn borrow(&self) -> &string_cache::Atom<Set> {
+        &self.0
+    }
+}
+
+#[cfg(feature = "servo")]
+impl<Set: string_cache::StaticAtomSet> GenericAtomIdent<Set> {
+    /// Constructs a new GenericAtomIdent.
+    #[inline]
+    pub fn new(atom: string_cache::Atom<Set>) -> Self {
+        Self(atom)
+    }
+
+    /// Cast an atom ref to an AtomIdent ref.
+    #[inline]
+    pub fn cast<'a>(atom: &'a string_cache::Atom<Set>) -> &'a Self {
+        let ptr = atom as *const _ as *const Self;
+        // safety: repr(transparent)
+        unsafe { &*ptr }
+    }
+}
+
 /// A CSS `<ident>` stored as an `Atom`.
+#[cfg(feature = "gecko")]
 #[repr(transparent)]
 #[derive(
-    Clone,
-    Debug,
-    Default,
-    Deref,
-    Eq,
-    Hash,
-    MallocSizeOf,
-    PartialEq,
-    SpecifiedValueInfo,
-    ToComputedValue,
-    ToResolvedValue,
-    ToShmem,
+    Clone, Debug, Default, Deref, Eq, Hash, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToShmem,
 )]
 pub struct AtomIdent(pub Atom);
 
+#[cfg(feature = "gecko")]
 impl cssparser::ToCss for AtomIdent {
     fn to_css<W>(&self, dest: &mut W) -> fmt::Result
     where
@@ -165,6 +293,7 @@ impl cssparser::ToCss for AtomIdent {
     }
 }
 
+#[cfg(feature = "gecko")]
 impl PrecomputedHash for AtomIdent {
     #[inline]
     fn precomputed_hash(&self) -> u32 {
@@ -172,6 +301,7 @@ impl PrecomputedHash for AtomIdent {
     }
 }
 
+#[cfg(feature = "gecko")]
 impl<'a> From<&'a str> for AtomIdent {
     #[inline]
     fn from(string: &str) -> Self {
@@ -179,9 +309,15 @@ impl<'a> From<&'a str> for AtomIdent {
     }
 }
 
+#[cfg(feature = "gecko")]
 impl AtomIdent {
+    /// Constructs a new AtomIdent.
+    #[inline]
+    pub fn new(atom: Atom) -> Self {
+        Self(atom)
+    }
+
     /// Like `Atom::with` but for `AtomIdent`.
-    #[cfg(feature = "gecko")]
     pub unsafe fn with<F, R>(ptr: *const crate::gecko_bindings::structs::nsAtom, callback: F) -> R
     where
         F: FnOnce(&Self) -> R,