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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
//! A nested declarations rule.
use crate::properties::PropertyDeclarationBlock;
use crate::shared_lock::{
DeepCloneWithLock, Locked, SharedRwLock, SharedRwLockReadGuard, ToCssWithGuard,
};
use crate::str::CssStringWriter;
use cssparser::SourceLocation;
use malloc_size_of::{MallocSizeOf, MallocSizeOfOps, MallocUnconditionalShallowSizeOf};
use servo_arc::Arc;
/// A nested declarations rule.
#[derive(Clone, Debug, ToShmem)]
pub struct NestedDeclarationsRule {
/// The declarations.
pub block: Arc<Locked<PropertyDeclarationBlock>>,
/// The source position this rule was found at.
pub source_location: SourceLocation,
}
impl NestedDeclarationsRule {
/// Measure heap usage.
pub fn size_of(&self, guard: &SharedRwLockReadGuard, ops: &mut MallocSizeOfOps) -> usize {
self.block.unconditional_shallow_size_of(ops) + self.block.read_with(guard).size_of(ops)
}
}
impl DeepCloneWithLock for NestedDeclarationsRule {
fn deep_clone_with_lock(&self, lock: &SharedRwLock, guard: &SharedRwLockReadGuard) -> Self {
Self {
block: Arc::new(lock.wrap(self.block.read_with(&guard).clone())),
source_location: self.source_location.clone(),
}
}
}
impl ToCssWithGuard for NestedDeclarationsRule {
fn to_css(
&self,
guard: &SharedRwLockReadGuard,
dest: &mut CssStringWriter,
) -> std::fmt::Result {
self.block.read_with(guard).to_css(dest)
}
}