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De-duplicate some redundant code with a macro.

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This commit is contained in:
Simon Sapin 2014-01-08 16:08:42 +00:00
parent 724fd7caaf
commit 8d8a8ad6e7
1 changed files with 34 additions and 99 deletions
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133
src/components/main/css/matching.rs
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@ -24,9 +24,6 @@ pub trait MatchMethods {
fn match_node(&self, stylist: &Stylist);
fn match_subtree(&self, stylist: RWArc<Stylist>);
fn cascade_before_node(&self, parent: Option<LayoutNode>);
fn cascade_node(&self, parent: Option<LayoutNode>);
fn cascade_after_node(&self, parent: Option<LayoutNode>);
fn cascade_subtree(&self, parent: Option<LayoutNode>);
}
@ -102,109 +99,47 @@ impl<'self> MatchMethods for LayoutNode<'self> {
}
}
fn cascade_before_node(&self, parent: Option<LayoutNode>) {
let parent_style = match parent {
Some(ref parent) => Some(parent.style()),
None => None
};
let computed_values = unsafe {
Arc::new(cascade(self.borrow_layout_data_unchecked()
.as_ref()
.unwrap()
.before_applicable_declarations,
parent_style.map(|parent_style| parent_style.get())))
};
match *self.mutate_layout_data().ptr {
None => fail!("no layout data"),
Some(ref mut layout_data) => {
let style = &mut layout_data.before_style;
match *style {
None => (),
Some(ref previous_style) => {
layout_data.restyle_damage =
Some(incremental::compute_damage(previous_style.get(),
computed_values.get()).to_int())
}
}
*style = Some(computed_values)
}
}
}
fn cascade_node(&self, parent: Option<LayoutNode>) {
let parent_style = match parent {
Some(ref parent) => Some(parent.style()),
None => None
};
let computed_values = unsafe {
Arc::new(cascade(self.borrow_layout_data_unchecked()
.as_ref()
.unwrap()
.applicable_declarations,
parent_style.map(|parent_style| parent_style.get())))
};
match *self.mutate_layout_data().ptr {
None => fail!("no layout data"),
Some(ref mut layout_data) => {
let style = &mut layout_data.style;
match *style {
None => (),
Some(ref previous_style) => {
layout_data.restyle_damage =
Some(incremental::compute_damage(previous_style.get(),
computed_values.get()).to_int())
}
}
*style = Some(computed_values)
}
}
}
fn cascade_after_node(&self, parent: Option<LayoutNode>) {
let parent_style = match parent {
Some(ref parent) => Some(parent.style()),
None => None
};
let computed_values = unsafe {
Arc::new(cascade(self.borrow_layout_data_unchecked()
.as_ref()
.unwrap()
.after_applicable_declarations,
parent_style.map(|parent_style| parent_style.get())))
};
match *self.mutate_layout_data().ptr {
None => fail!("no layout data"),
Some(ref mut layout_data) => {
let style = &mut layout_data.after_style;
match *style {
None => (),
Some(ref previous_style) => {
layout_data.restyle_damage =
Some(incremental::compute_damage(previous_style.get(),
computed_values.get()).to_int())
}
}
*style = Some(computed_values)
}
}
}
fn cascade_subtree(&self, parent: Option<LayoutNode>) {
let layout_data = unsafe {
self.borrow_layout_data_unchecked().as_ref().unwrap()
};
macro_rules! cascade_node(
($applicable_declarations: ident, $style: ident) => {{
let parent_style = match parent {
Some(ref parent) => Some(parent.style()),
None => None
};
let computed_values = Arc::new(cascade(
layout_data.$applicable_declarations,
parent_style.map(|parent_style| parent_style.get())));
match *self.mutate_layout_data().ptr {
None => fail!("no layout data"),
Some(ref mut layout_data) => {
let style = &mut layout_data.$style;
match *style {
None => (),
Some(ref previous_style) => {
layout_data.restyle_damage = Some(incremental::compute_damage(
previous_style.get(), computed_values.get()).to_int())
}
}
*style = Some(computed_values)
}
}
}}
);
unsafe {
if self.borrow_layout_data_unchecked().as_ref().unwrap().before_applicable_declarations.len() > 0 {
self.cascade_before_node(parent);
cascade_node!(before_applicable_declarations, before_style);
}
}
self.cascade_node(parent);
cascade_node!(applicable_declarations, style);
unsafe {
if self.borrow_layout_data_unchecked().as_ref().unwrap().after_applicable_declarations.len() > 0 {
self.cascade_after_node(parent);
cascade_node!(after_applicable_declarations, after_style);
}
}