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Change ToCss to take a CssWriter<W>

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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.
This commit is contained in:
Anthony Ramine 2018-01-22 19:58:01 +01:00
parent 3672856efa
commit cd8f96cc9e
89 changed files with 873 additions and 533 deletions
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9
components/style/values/generics/rect.rs
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@ -6,8 +6,8 @@
use cssparser::Parser;
use parser::{Parse, ParserContext};
use std::fmt;
use style_traits::{ToCss, ParseError};
use std::fmt::{self, Write};
use style_traits::{CssWriter, ParseError, ToCss};
/// A CSS value made of four components, where its `ToCss` impl will try to
/// serialize as few components as possible, like for example in `border-width`.
@ -68,8 +68,9 @@ impl<T> Parse for Rect<T>
impl<T> ToCss for Rect<T>
where T: PartialEq + ToCss
{
fn to_css<W>(&self, dest: &mut W) -> fmt::Result
where W: fmt::Write,
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
where
W: Write,
{
self.0.to_css(dest)?;
let same_vertical = self.0 == self.2;