lightningcss/rules/
namespace.rs

1//! The `@namespace` rule.
2
3use super::Location;
4use crate::error::PrinterError;
5use crate::printer::Printer;
6use crate::traits::ToCss;
7use crate::values::ident::Ident;
8use crate::values::string::CSSString;
9#[cfg(feature = "visitor")]
10use crate::visitor::Visit;
11
12/// A [@namespace](https://drafts.csswg.org/css-namespaces/#declaration) rule.
13#[derive(Debug, PartialEq, Clone)]
14#[cfg_attr(feature = "visitor", derive(Visit))]
15#[cfg_attr(feature = "into_owned", derive(static_self::IntoOwned))]
16#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
17#[cfg_attr(feature = "jsonschema", derive(schemars::JsonSchema))]
18pub struct NamespaceRule<'i> {
19  /// An optional namespace prefix to declare, or `None` to declare the default namespace.
20  #[cfg_attr(feature = "serde", serde(borrow))]
21  #[cfg_attr(feature = "visitor", skip_visit)]
22  pub prefix: Option<Ident<'i>>,
23  /// The url of the namespace.
24  #[cfg_attr(feature = "serde", serde(borrow))]
25  #[cfg_attr(feature = "visitor", skip_visit)]
26  pub url: CSSString<'i>,
27  /// The location of the rule in the source file.
28  #[cfg_attr(feature = "visitor", skip_visit)]
29  pub loc: Location,
30}
31
32impl<'i> ToCss for NamespaceRule<'i> {
33  fn to_css<W>(&self, dest: &mut Printer<W>) -> Result<(), PrinterError>
34  where
35    W: std::fmt::Write,
36  {
37    #[cfg(feature = "sourcemap")]
38    dest.add_mapping(self.loc);
39    dest.write_str("@namespace ")?;
40    if let Some(prefix) = &self.prefix {
41      prefix.to_css(dest)?;
42      dest.write_char(' ')?;
43    }
44
45    self.url.to_css(dest)?;
46    dest.write_char(';')
47  }
48}
lightningcss/rules/namespace.rs

lightningcss/rules/
namespace.rs
