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import { Decoration } from '@codemirror/view';
import { Range, RangeSet } from '@codemirror/rangeset';
import type { EditorStore } from '../editor/EditorStore';
import type { UpdateService } from './UpdateService';
import { getLogger } from '../utils/logger';
import { isHighlightingResult } from './xtextServiceResults';
const log = getLogger('xtext.ValidationService');
export class HighlightingService {
private store: EditorStore;
private updateService: UpdateService;
constructor(store: EditorStore, updateService: UpdateService) {
this.store = store;
this.updateService = updateService;
}
onPush(push: unknown): void {
if (!isHighlightingResult(push)) {
log.error('Invalid highlighting result', push);
return;
}
const allChanges = this.updateService.computeChangesSinceLastUpdate();
const decorations: Range<Decoration>[] = [];
push.regions.forEach(({ offset, length, styleClasses }) => {
if (styleClasses.length === 0) {
return;
}
const from = allChanges.mapPos(offset);
const to = allChanges.mapPos(offset + length);
if (to <= from) {
return;
}
decorations.push(Decoration.mark({
class: styleClasses.map((c) => `cmt-problem-${c}`).join(' '),
}).range(from, to));
});
this.store.updateSemanticHighlighting(RangeSet.of(decorations, true));
}
}
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