Method trackPosition

src/shared/vscode/trackers.ts:139–168

(document: vs.TextDocument, position: Position, callback: (newPosition: vs.Position | undefined) => void)

	}

	public trackPosition(document: vs.TextDocument, position: Position, callback: (newPosition: vs.Position | undefined) => void): IAmDisposable {
		const vsPosition = new vs.Position(position.line, position.character);
		const offset = document.offsetAt(vsPosition);
		const key = document.uri.toString();
		const entry: PositionTrackerEntry = {
			offset,
			position: vsPosition,
			callback,
			dispose: () => {
				const trackers = this.trackers.get(key);
				if (!trackers)
					return;

				const index = trackers.indexOf(entry);
				if (index !== -1) {
					trackers.splice(index, 1);
				}
				if (trackers.length === 0) {
					this.trackers.delete(key);
				}
			}
		};

		if (!this.trackers.has(key)) {
			this.trackers.set(key, []);
		}
		this.trackers.get(key)!.push(entry);

		return entry;
	}

	private handleDocumentChange(e: vs.TextDocumentChangeEvent) {
		// Some "document changes" are things like metadata and don't