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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
import type EditorStore from '../editor/EditorStore';
import type { IHighlightRange } from '../editor/semanticHighlighting';
import type UpdateService from './UpdateService';
import { highlightingResult } from './xtextServiceResults';
const TYPE_HASH_HEX_PREFIX = 'typeHash-_';
export default class HighlightingService {
constructor(
private readonly store: EditorStore,
private readonly updateService: UpdateService,
) {}
onPush(push: unknown): void {
const { regions } = highlightingResult.parse(push);
const allChanges = this.updateService.computeChangesSinceLastUpdate();
const ranges: IHighlightRange[] = [];
const hexTypeHashes = new Set<string>();
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;
}
ranges.push({
from,
to,
classes: styleClasses,
});
styleClasses.forEach((styleClass) => {
if (styleClass.startsWith(TYPE_HASH_HEX_PREFIX)) {
hexTypeHashes.add(styleClass.substring(TYPE_HASH_HEX_PREFIX.length));
}
});
});
this.store.updateSemanticHighlighting(ranges, Array.from(hexTypeHashes));
}
onDisconnect(): void {
this.store.updateSemanticHighlighting([], []);
}
}
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