diff options
Diffstat (limited to 'subprojects/frontend/src/xtext/HighlightingService.ts')
-rw-r--r-- | subprojects/frontend/src/xtext/HighlightingService.ts | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/subprojects/frontend/src/xtext/HighlightingService.ts b/subprojects/frontend/src/xtext/HighlightingService.ts new file mode 100644 index 00000000..dfbb4a19 --- /dev/null +++ b/subprojects/frontend/src/xtext/HighlightingService.ts | |||
@@ -0,0 +1,37 @@ | |||
1 | import type { EditorStore } from '../editor/EditorStore'; | ||
2 | import type { IHighlightRange } from '../editor/semanticHighlighting'; | ||
3 | import type { UpdateService } from './UpdateService'; | ||
4 | import { highlightingResult } from './xtextServiceResults'; | ||
5 | |||
6 | export class HighlightingService { | ||
7 | private readonly store: EditorStore; | ||
8 | |||
9 | private readonly updateService: UpdateService; | ||
10 | |||
11 | constructor(store: EditorStore, updateService: UpdateService) { | ||
12 | this.store = store; | ||
13 | this.updateService = updateService; | ||
14 | } | ||
15 | |||
16 | onPush(push: unknown): void { | ||
17 | const { regions } = highlightingResult.parse(push); | ||
18 | const allChanges = this.updateService.computeChangesSinceLastUpdate(); | ||
19 | const ranges: IHighlightRange[] = []; | ||
20 | regions.forEach(({ offset, length, styleClasses }) => { | ||
21 | if (styleClasses.length === 0) { | ||
22 | return; | ||
23 | } | ||
24 | const from = allChanges.mapPos(offset); | ||
25 | const to = allChanges.mapPos(offset + length); | ||
26 | if (to <= from) { | ||
27 | return; | ||
28 | } | ||
29 | ranges.push({ | ||
30 | from, | ||
31 | to, | ||
32 | classes: styleClasses, | ||
33 | }); | ||
34 | }); | ||
35 | this.store.updateSemanticHighlighting(ranges); | ||
36 | } | ||
37 | } | ||