Finn EversandKirill Bulatov
123a29795d
Self-Review Checklist: - [X] I've reviewed my own diff for quality, security, and reliability - [ ] Unsafe blocks (if any) have justifying comments - [ ] The content is consistent with the [UI/UX checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) - [ ] Tests cover the new/changed behavior - [ ] Performance impact has been considered and is acceptable Release Notes: - Added the option for highlights from languages to specify fallbacks. That means that if you have a pattern with the captures `@second.capture @first.capture`, Zed will first try resolving a highlight from your theme for the code fragment using the first capture, then look for the second capture if no match for the first capture could be found. --------- Co-authored-by: Kirill Bulatov <kirill@zed.dev>
41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
use std::{num::NonZeroU32, sync::Arc};
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#[derive(Clone, Debug)]
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pub struct HighlightMap(Arc<[Option<HighlightId>]>);
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#[derive(Clone, Copy, Debug, PartialEq, Eq)]
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pub struct HighlightId(NonZeroU32);
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impl HighlightId {
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pub const TABSTOP_INSERT_ID: HighlightId = HighlightId(NonZeroU32::new(u32::MAX - 1).unwrap());
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pub const TABSTOP_REPLACE_ID: HighlightId = HighlightId(NonZeroU32::new(u32::MAX - 2).unwrap());
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pub fn new(capture_id: u32) -> Self {
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Self(NonZeroU32::new(capture_id + 1).unwrap_or(NonZeroU32::MAX))
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}
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}
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impl From<HighlightId> for usize {
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fn from(value: HighlightId) -> Self {
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value.0.get() as usize - 1
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}
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}
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impl HighlightMap {
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#[inline]
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pub fn from_ids(highlight_ids: impl IntoIterator<Item = Option<HighlightId>>) -> Self {
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Self(highlight_ids.into_iter().collect())
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}
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#[inline]
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pub fn get(&self, capture_id: u32) -> Option<HighlightId> {
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self.0.get(capture_id as usize).copied().flatten()
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}
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}
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impl Default for HighlightMap {
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fn default() -> Self {
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Self(Arc::new([]))
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}
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}
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