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stylo: Implement GetSpecificity for ServoStyleRule
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parent
87140641a4
commit
2cc940384d
3 changed files with 39 additions and 26 deletions
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@ -201,23 +201,6 @@ impl<Impl: SelectorImpl> SelectorList<Impl> {
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pub fn from_vec(v: Vec<Selector<Impl>>) -> Self {
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SelectorList(v.into_iter().map(SelectorAndHashes::new).collect())
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}
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pub fn to_css_from_index<W>(&self, from_index: usize, dest: &mut W)
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-> fmt::Result where W: fmt::Write {
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let mut iter = self.0.iter().skip(from_index);
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let first = match iter.next() {
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Some(f) => f,
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None => return Ok(()),
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};
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first.selector.to_css(dest)?;
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for selector_and_hashes in iter {
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dest.write_str(", ")?;
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selector_and_hashes.selector.to_css(dest)?;
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}
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Ok(())
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}
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}
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/// Copied from Gecko, who copied it from WebKit. Note that increasing the
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@ -714,7 +697,15 @@ impl<Impl: SelectorImpl> Debug for LocalName<Impl> {
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impl<Impl: SelectorImpl> ToCss for SelectorList<Impl> {
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fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
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self.to_css_from_index(/* from_index = */ 0, dest)
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let mut iter = self.0.iter();
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let first = iter.next()
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.expect("Empty SelectorList, should contain at least one selector");
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first.selector.to_css(dest)?;
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for selector_and_hashes in iter {
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dest.write_str(", ")?;
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selector_and_hashes.selector.to_css(dest)?;
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}
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Ok(())
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}
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}
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@ -2112,11 +2112,17 @@ extern "C" {
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result: *mut nsAString);
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}
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extern "C" {
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pub fn Servo_StyleRule_GetSelectorTextFromIndex(rule:
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pub fn Servo_StyleRule_GetSelectorTextAtIndex(rule:
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RawServoStyleRuleBorrowed,
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index: u32,
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result: *mut nsAString);
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}
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extern "C" {
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pub fn Servo_StyleRule_GetSpecificityAtIndex(rule:
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RawServoStyleRuleBorrowed,
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index: u32,
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specificity: *mut u64);
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}
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extern "C" {
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pub fn Servo_StyleRule_GetSelectorCount(rule: RawServoStyleRuleBorrowed,
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count: *mut u32);
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@ -1187,14 +1187,15 @@ pub extern "C" fn Servo_StyleRule_GetSelectorText(rule: RawServoStyleRuleBorrowe
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}
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#[no_mangle]
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pub extern "C" fn Servo_StyleRule_GetSelectorTextFromIndex(rule: RawServoStyleRuleBorrowed,
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aSelectorIndex: u32,
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result: *mut nsAString) {
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pub extern "C" fn Servo_StyleRule_GetSelectorTextAtIndex(rule: RawServoStyleRuleBorrowed,
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index: u32,
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result: *mut nsAString) {
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read_locked_arc(rule, |rule: &StyleRule| {
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rule.selectors.to_css_from_index(
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aSelectorIndex as usize,
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unsafe { result.as_mut().unwrap() }
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).unwrap();
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let index = index as usize;
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if index >= rule.selectors.0.len() {
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return;
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}
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rule.selectors.0[index].selector.to_css(unsafe { result.as_mut().unwrap() }).unwrap();
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})
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}
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@ -1205,6 +1206,21 @@ pub extern "C" fn Servo_StyleRule_GetSelectorCount(rule: RawServoStyleRuleBorrow
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})
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}
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#[no_mangle]
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pub extern "C" fn Servo_StyleRule_GetSpecificityAtIndex(rule: RawServoStyleRuleBorrowed,
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index: u32,
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specificity: *mut u64) {
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read_locked_arc(rule, |rule: &StyleRule| {
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let mut specificity = unsafe { specificity.as_mut().unwrap() };
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let index = index as usize;
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if index >= rule.selectors.0.len() {
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*specificity = 0;
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return;
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}
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*specificity = rule.selectors.0[index].selector.specificity() as u64;
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})
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}
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#[no_mangle]
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pub extern "C" fn Servo_ImportRule_GetHref(rule: RawServoImportRuleBorrowed, result: *mut nsAString) {
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read_locked_arc(rule, |rule: &ImportRule| {
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