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Auto merge of #16435 - nox:parse-origin, r=emilio

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Fix parsing of "center left" in parse_origin (fixes #15750)

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This commit is contained in:
bors-servo 2017-04-14 03:16:51 -05:00 • committed by GitHub
commit f7896fd80b
2 changed files with 24 additions and 2 deletions
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9
components/style/properties/longhand/effects.mako.rs
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@ -439,7 +439,7 @@ pub struct OriginParseResult {
pub fn parse_origin(context: &ParserContext, input: &mut Parser) -> Result<OriginParseResult,()> {
use values::specified::{LengthOrPercentage, Percentage};
let (mut horizontal, mut vertical, mut depth) = (None, None, None);
let (mut horizontal, mut vertical, mut depth, mut horizontal_is_center) = (None, None, None, false);
loop {
if let Err(_) = input.try(|input| {
let token = try!(input.expect_ident());
@ -448,12 +448,16 @@ pub fn parse_origin(context: &ParserContext, input: &mut Parser) -> Result<Origi
"left" => {
if horizontal.is_none() {
horizontal = Some(LengthOrPercentage::Percentage(Percentage(0.0)))
} else if horizontal_is_center && vertical.is_none() {
vertical = Some(LengthOrPercentage::Percentage(Percentage(0.5)));
horizontal = Some(LengthOrPercentage::Percentage(Percentage(0.0)));
} else {
return Err(())
}
},
"center" => {
if horizontal.is_none() {
horizontal_is_center = true;
horizontal = Some(LengthOrPercentage::Percentage(Percentage(0.5)))
} else if vertical.is_none() {
vertical = Some(LengthOrPercentage::Percentage(Percentage(0.5)))
@ -464,6 +468,9 @@ pub fn parse_origin(context: &ParserContext, input: &mut Parser) -> Result<Origi
"right" => {
if horizontal.is_none() {
horizontal = Some(LengthOrPercentage::Percentage(Percentage(1.0)))
} else if horizontal_is_center && vertical.is_none() {
vertical = Some(LengthOrPercentage::Percentage(Percentage(0.5)));
horizontal = Some(LengthOrPercentage::Percentage(Percentage(1.0)));
} else {
return Err(())
}