Function setupHover

packages/lsp/src/server/hover.ts:27–54

(connection: Connection, documents: TextDocuments<AlphaTexTextDocument>)

} from '@coderline/alphatab-language-server/server/utils';

export function setupHover(connection: Connection, documents: TextDocuments<AlphaTexTextDocument>) {
    connection.onHover(params => {
        const document = documents.get(params.textDocument.uri);
        if (!document?.ast) {
            return null;
        }

        const offset = document.offsetAt(params.position);

        // lookup bar at location
        const bar = binaryNodeSearch(document.ast.bars, offset);
        if (!bar) {
            return null;
        }

        const metaData = binaryNodeSearch(bar.metaData, offset);
        if (metaData) {
            return createMetaDataHover(metaData, offset);
        }

        const beat = binaryNodeSearch(bar.beats, offset);
        if (beat) {
            return createBeatHover(beat, offset);
        }

        return null;
    });
}

function createMetaDataHover(metaData: alphaTab.importer.alphaTex.AlphaTexMetaDataNode, offset: number): Hover | null {
    const metaDataDocs = allMetadata.get(`\\${metaData.tag.tag.text.toLowerCase()}`);