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Add function to parse <line-names>

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This commit is contained in:
Ravi Shankar 2017-03-21 13:36:39 +05:30
parent 5d1e02760b
commit 53c7b0ac15
1 changed files with 20 additions and 2 deletions
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22
components/style/values/specified/grid.rs
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@ -9,7 +9,7 @@ use parser::{Parse, ParserContext};
use std::ascii::AsciiExt; use std::ascii::AsciiExt;
use std::fmt; use std::fmt;
use style_traits::ToCss; use style_traits::ToCss;
use values::{CSSFloat, HasViewportPercentage}; use values::{CSSFloat, CustomIdent, HasViewportPercentage};
use values::computed::{ComputedValueAsSpecified, Context, ToComputedValue}; use values::computed::{ComputedValueAsSpecified, Context, ToComputedValue};
use values::specified::LengthOrPercentage; use values::specified::LengthOrPercentage;
@ -18,7 +18,6 @@ use values::specified::LengthOrPercentage;
/// A `<grid-line>` type. /// A `<grid-line>` type.
/// ///
/// https://drafts.csswg.org/css-grid/#typedef-grid-row-start-grid-line /// https://drafts.csswg.org/css-grid/#typedef-grid-row-start-grid-line
#[allow(missing_docs)]
pub struct GridLine { pub struct GridLine {
/// Flag to check whether it's a `span` keyword. /// Flag to check whether it's a `span` keyword.
pub is_span: bool, pub is_span: bool,
@ -306,3 +305,22 @@ impl<L: ToComputedValue> ToComputedValue for TrackSize<L> {
} }
} }
} }
/// Parse the grid line names into a vector of owned strings.
///
/// https://drafts.csswg.org/css-grid/#typedef-line-names
pub fn parse_line_names(input: &mut Parser) -> Result<Vec<String>, ()> {
input.expect_square_bracket_block()?;
input.parse_nested_block(|input| {
let mut values = vec![];
while let Ok(ident) = input.try(|i| i.expect_ident()) {
if CustomIdent::from_ident((&*ident).into(), &["span"]).is_err() {
return Err(())
}
values.push(ident.into_owned());
}
Ok(values)
})
}