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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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23
components/style/properties/helpers.mako.rs
View file

@ -82,8 +82,8 @@
need_animatable=need_animatable, **kwargs)">
#[allow(unused_imports)]
use smallvec::SmallVec;
use std::fmt;
use style_traits::{Separator, ToCss};
use std::fmt::{self, Write};
use style_traits::{CssWriter, Separator, ToCss};
pub mod single_value {
#[allow(unused_imports)]
@ -154,8 +154,9 @@
}
impl ToCss for computed_value::T {
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,
{
let mut iter = self.0.iter();
if let Some(val) = iter.next() {
@ -180,8 +181,9 @@
pub struct SpecifiedValue(pub Vec<single_value::SpecifiedValue>);
impl ToCss for SpecifiedValue {
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,
{
let mut iter = self.0.iter();
if let Some(val) = iter.next() {
@ -682,11 +684,11 @@
#[allow(unused_imports)]
use selectors::parser::SelectorParseErrorKind;
#[allow(unused_imports)]
use std::fmt;
use std::fmt::{self, Write};
#[allow(unused_imports)]
use style_traits::{ParseError, StyleParseErrorKind};
#[allow(unused_imports)]
use style_traits::ToCss;
use style_traits::{CssWriter, ToCss};
pub struct Longhands {
% for sub_property in shorthand.sub_properties:
@ -806,7 +808,10 @@
}
impl<'a> ToCss for LonghandsToSerialize<'a> {
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,
{
let rect = Rect::new(
% for side in ["top", "right", "bottom", "left"]:
&self.${to_rust_ident(sub_property_pattern % side)},