servo/components/style/values/specified/list.rs
2019-04-12 12:20:14 +02:00

180 lines
4.8 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
//! `list` specified values.
use crate::parser::{Parse, ParserContext};
#[cfg(feature = "gecko")]
use crate::values::generics::CounterStyleOrNone;
#[cfg(feature = "gecko")]
use crate::values::CustomIdent;
use cssparser::{Parser, Token};
use servo_arc::Arc;
use style_traits::{ParseError, StyleParseErrorKind};
/// Specified and computed `list-style-type` property.
#[cfg(feature = "gecko")]
#[derive(
Clone,
Debug,
Eq,
MallocSizeOf,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToCss,
ToResolvedValue,
ToShmem,
)]
pub enum ListStyleType {
/// <counter-style> | none
CounterStyle(CounterStyleOrNone),
/// <string>
String(String),
}
#[cfg(feature = "gecko")]
impl ListStyleType {
/// Initial specified value for `list-style-type`.
#[inline]
pub fn disc() -> Self {
ListStyleType::CounterStyle(CounterStyleOrNone::disc())
}
/// Convert from gecko keyword to list-style-type.
///
/// This should only be used for mapping type attribute to
/// list-style-type, and thus only values possible in that
/// attribute is considered here.
pub fn from_gecko_keyword(value: u32) -> Self {
use crate::gecko_bindings::structs;
if value == structs::NS_STYLE_LIST_STYLE_NONE {
return ListStyleType::CounterStyle(CounterStyleOrNone::None);
}
ListStyleType::CounterStyle(CounterStyleOrNone::Name(CustomIdent(match value {
structs::NS_STYLE_LIST_STYLE_DISC => atom!("disc"),
structs::NS_STYLE_LIST_STYLE_CIRCLE => atom!("circle"),
structs::NS_STYLE_LIST_STYLE_SQUARE => atom!("square"),
structs::NS_STYLE_LIST_STYLE_DECIMAL => atom!("decimal"),
structs::NS_STYLE_LIST_STYLE_LOWER_ROMAN => atom!("lower-roman"),
structs::NS_STYLE_LIST_STYLE_UPPER_ROMAN => atom!("upper-roman"),
structs::NS_STYLE_LIST_STYLE_LOWER_ALPHA => atom!("lower-alpha"),
structs::NS_STYLE_LIST_STYLE_UPPER_ALPHA => atom!("upper-alpha"),
_ => unreachable!("Unknown counter style keyword value"),
})))
}
}
#[cfg(feature = "gecko")]
impl Parse for ListStyleType {
fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
if let Ok(style) = input.try(|i| CounterStyleOrNone::parse(context, i)) {
return Ok(ListStyleType::CounterStyle(style));
}
Ok(ListStyleType::String(
input.expect_string()?.as_ref().to_owned(),
))
}
}
/// A quote pair.
#[derive(
Clone,
Debug,
MallocSizeOf,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToCss,
ToResolvedValue,
ToShmem,
)]
pub struct QuotePair {
/// The opening quote.
pub opening: Box<str>,
/// The closing quote.
pub closing: Box<str>,
}
/// Specified and computed `quotes` property.
#[derive(
Clone,
Debug,
MallocSizeOf,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToCss,
ToResolvedValue,
ToShmem,
)]
pub struct Quotes(
#[css(iterable, if_empty = "none")]
#[ignore_malloc_size_of = "Arc"]
pub Arc<Box<[QuotePair]>>,
);
impl Parse for Quotes {
fn parse<'i, 't>(
_: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Quotes, ParseError<'i>> {
if input
.try(|input| input.expect_ident_matching("none"))
.is_ok()
{
return Ok(Quotes(Arc::new(Box::new([]))));
}
let mut quotes = Vec::new();
loop {
let location = input.current_source_location();
let opening = match input.next() {
Ok(&Token::QuotedString(ref value)) => value.as_ref().to_owned().into_boxed_str(),
Ok(t) => return Err(location.new_unexpected_token_error(t.clone())),
Err(_) => break,
};
let closing = input.expect_string()?.as_ref().to_owned().into_boxed_str();
quotes.push(QuotePair { opening, closing });
}
if !quotes.is_empty() {
Ok(Quotes(Arc::new(quotes.into_boxed_slice())))
} else {
Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError))
}
}
}
/// Specified and computed `-moz-list-reversed` property (for UA sheets only).
#[derive(
Clone,
Copy,
Debug,
Eq,
Hash,
MallocSizeOf,
Parse,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToCss,
ToResolvedValue,
ToShmem,
)]
#[repr(u8)]
pub enum MozListReversed {
/// the initial value
False,
/// exclusively used for <ol reversed> in our html.css UA sheet
True,
}