Change ToCss to take a CssWriter<W>

This more concrete wrapper type can write a prefix the very first time something
is written to it. This allows removing plenty of useless monomorphisations caused
by the former W/SequenceWriter<W> pair of types.

1 files changed, 3 insertions, 3 deletions

diff --git a/components/style/gecko/selector_parser.rs b/components/style/gecko/selector_parser.rs
index cb57d9b21fb..985bd453b4c 100644
--- a/components/style/gecko/selector_parser.rs
+++ b/components/style/gecko/selector_parser.rs
@@ -16,7 +16,7 @@ use selectors::parser::{self as selector_parser, Selector, Visit, SelectorParseE
 use selectors::visitor::SelectorVisitor;
 use std::fmt;
 use string_cache::{Atom, Namespace, WeakAtom, WeakNamespace};
-use style_traits::{ParseError, StyleParseErrorKind, ToCss as ToCss_};
+use style_traits::{CssWriter, ParseError, StyleParseErrorKind, ToCss as ToCss_};
 
 pub use gecko::pseudo_element::{PseudoElement, EAGER_PSEUDOS, EAGER_PSEUDO_COUNT, PSEUDO_COUNT};
 pub use gecko::snapshot::SnapshotMap;
@@ -86,12 +86,12 @@ impl ToCss for NonTSPseudoClass {
                     }, )*
                     NonTSPseudoClass::MozLocaleDir(ref dir) => {
                         dest.write_str(":-moz-locale-dir(")?;
-                        dir.to_css(dest)?;
+                        dir.to_css(&mut CssWriter::new(dest))?;
                         return dest.write_char(')')
                     },
                     NonTSPseudoClass::Dir(ref dir) => {
                         dest.write_str(":dir(")?;
-                        dir.to_css(dest)?;
+                        dir.to_css(&mut CssWriter::new(dest))?;
                         return dest.write_char(')')
                     },
                     NonTSPseudoClass::MozAny(ref selectors) => {