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use cssparser::*;
use super::Location;
use super::{CssRuleList, MinifyContext};
use crate::error::{MinifyError, ParserError, PrinterError};
use crate::media_query::MediaCondition;
use crate::printer::Printer;
use crate::rules::{StyleContext, ToCssWithContext};
use crate::traits::{Parse, ToCss};
use crate::values::ident::CustomIdent;
#[derive(Debug, PartialEq, Clone)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct ContainerRule<'i> {
#[cfg_attr(feature = "serde", serde(borrow))]
pub name: Option<ContainerName<'i>>,
pub condition: MediaCondition<'i>,
pub rules: CssRuleList<'i>,
pub loc: Location,
}
#[derive(Debug, Clone, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct ContainerName<'i>(#[cfg_attr(feature = "serde", serde(borrow))] pub CustomIdent<'i>);
impl<'i> Parse<'i> for ContainerName<'i> {
fn parse<'t>(input: &mut Parser<'i, 't>) -> Result<Self, ParseError<'i, ParserError<'i>>> {
let ident = CustomIdent::parse(input)?;
match_ignore_ascii_case! { &*ident.0,
"none" | "and" | "not" | "or" => Err(input.new_unexpected_token_error(Token::Ident(ident.0.as_ref().to_owned().into()))),
_ => Ok(ContainerName(ident))
}
}
}
impl<'i> ToCss for ContainerName<'i> {
fn to_css<W>(&self, dest: &mut Printer<W>) -> Result<(), PrinterError>
where
W: std::fmt::Write,
{
self.0.to_css(dest)
}
}
impl<'i> ContainerRule<'i> {
pub(crate) fn minify(
&mut self,
context: &mut MinifyContext<'_, 'i>,
parent_is_unused: bool,
) -> Result<bool, MinifyError> {
self.rules.minify(context, parent_is_unused)?;
Ok(self.rules.0.is_empty())
}
}
impl<'a, 'i> ToCssWithContext<'a, 'i> for ContainerRule<'i> {
fn to_css_with_context<W>(
&self,
dest: &mut Printer<W>,
context: Option<&StyleContext<'a, 'i>>,
) -> Result<(), PrinterError>
where
W: std::fmt::Write,
{
dest.add_mapping(self.loc);
dest.write_str("@container ")?;
if let Some(name) = &self.name {
name.to_css(dest)?;
dest.write_char(' ')?;
}
let mut targets = None;
std::mem::swap(&mut targets, &mut dest.targets);
self.condition.to_css(dest)?;
std::mem::swap(&mut targets, &mut dest.targets);
dest.whitespace()?;
dest.write_char('{')?;
dest.indent();
dest.newline()?;
self.rules.to_css_with_context(dest, context)?;
dest.dedent();
dest.newline()?;
dest.write_char('}')
}
}