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/* 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 */
//! The `@namespace` at-rule.
use crate::shared_lock::{SharedRwLockReadGuard, ToCssWithGuard};
use crate::str::CssStringWriter;
use crate::{Namespace, Prefix};
use cssparser::SourceLocation;
use std::fmt::{self, Write};
use style_traits::{CssWriter, ToCss};
/// A `@namespace` rule.
#[derive(Clone, Debug, PartialEq, ToShmem)]
pub struct NamespaceRule {
/// The namespace prefix, and `None` if it's the default Namespace
pub prefix: Option<Prefix>,
/// The actual namespace url.
pub url: Namespace,
/// The source location this rule was found at.
pub source_location: SourceLocation,
impl ToCssWithGuard for NamespaceRule {
fn to_css(
_guard: &SharedRwLockReadGuard,
dest_str: &mut CssStringWriter,
) -> fmt::Result {
let mut dest = CssWriter::new(dest_str);
dest.write_str("@namespace ")?;
if let Some(ref prefix) = self.prefix {
prefix.to_css(&mut dest)?;
dest.write_char(' ')?;
self.url.to_string().to_css(&mut dest)?;