50 lines
1.7 KiB
Rust
50 lines
1.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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//! A nested declarations rule.
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//! https://drafts.csswg.org/css-nesting-1/#nested-declarations-rule
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use crate::properties::PropertyDeclarationBlock;
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use crate::shared_lock::{
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DeepCloneWithLock, Locked, SharedRwLock, SharedRwLockReadGuard, ToCssWithGuard,
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};
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use crate::str::CssStringWriter;
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use cssparser::SourceLocation;
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use malloc_size_of::{MallocSizeOf, MallocSizeOfOps, MallocUnconditionalShallowSizeOf};
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use servo_arc::Arc;
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/// A nested declarations rule.
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#[derive(Clone, Debug, ToShmem)]
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pub struct NestedDeclarationsRule {
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/// The declarations.
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pub block: Arc<Locked<PropertyDeclarationBlock>>,
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/// The source position this rule was found at.
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pub source_location: SourceLocation,
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}
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impl NestedDeclarationsRule {
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/// Measure heap usage.
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pub fn size_of(&self, guard: &SharedRwLockReadGuard, ops: &mut MallocSizeOfOps) -> usize {
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self.block.unconditional_shallow_size_of(ops) + self.block.read_with(guard).size_of(ops)
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}
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}
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impl DeepCloneWithLock for NestedDeclarationsRule {
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fn deep_clone_with_lock(&self, lock: &SharedRwLock, guard: &SharedRwLockReadGuard) -> Self {
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Self {
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block: Arc::new(lock.wrap(self.block.read_with(&guard).clone())),
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source_location: self.source_location.clone(),
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}
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}
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}
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impl ToCssWithGuard for NestedDeclarationsRule {
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fn to_css(
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&self,
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guard: &SharedRwLockReadGuard,
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dest: &mut CssStringWriter,
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) -> std::fmt::Result {
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self.block.read_with(guard).to_css(dest)
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}
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}
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