Function createBeatCompletions

packages/lsp/src/server/completion.ts:141–213

(
    beat: alphaTab.importer.alphaTex.AlphaTexBeatNode,
    offset: number,
    endOfBeat: number
)

);

function createBeatCompletions(
    beat: alphaTab.importer.alphaTex.AlphaTexBeatNode,
    offset: number,
    endOfBeat: number
): CompletionItem[] {
    const completions: CompletionItem[] = [];

    if (
        beat.durationChange &&
        beat.durationChange.start!.offset < offset &&
        offset <= beat.durationChange!.end!.offset
    ) {
        const endOfDurationChange = beat.notes?.start?.offset ?? endOfBeat;
        return createDurationChangeCompletions(beat.durationChange, offset, endOfDurationChange);
    }

    if (beat.notes && beat.notes.start!.offset < offset && offset <= beat.notes.end!.offset) {
        const endOfNotes =
            beat.notes?.closeParenthesis?.start?.offset ??
            beat.durationDot?.start?.offset ??
            beat.beatEffects?.start?.offset ??
            beat.beatMultiplier?.start?.offset ??
            endOfBeat;
        const note = binaryNodeSearch(beat.notes.notes, offset, endOfNotes);
        if (note) {
            const noteIndex = beat.notes.notes.indexOf(note);
            const endOfNote =
                noteIndex === beat.notes.notes.length - 1 ? endOfNotes : beat.notes.notes[noteIndex + 1].start!.offset;
            return createNoteCompletions(beat, note, offset, endOfNote);
        }
    }

    const afterDuration = beat.beatMultiplier?.start?.offset ?? beat.beatEffects?.start?.offset ?? beat.end!.offset;

    if (beat.durationDot && beat.durationDot.start!.offset < offset && (offset <= afterDuration || !beat.beatEffects)) {
        const replacement: TextEdit[] | undefined = beat.durationValue
            ? [
                  TextEdit.del({
                      start: {
                          line: beat.durationDot.end!.line - 1,
                          character: beat.durationDot.end!.col - 1
                      },
                      end: {
                          line: beat.durationValue!.end!.line - 1,
                          character: beat.durationValue!.end!.col - 1
                      }
                  })
              ]
            : undefined;

        completions.push(
            ...durationCompletionItems.map(
                d =>
                    ({
                        ...d,
                        additionalTextEdits: replacement
                    }) satisfies CompletionItem
            )