export function getCurrentCommandRange()

in package/src/extendedEditor.ts [3:39]

• 26 lines of code
• 5 McCabe index (conditional complexity)

export function getCurrentCommandRange(editor: monaco.editor.ICodeEditor, cursorPosition: monaco.Position) {
    const zeroBasedCursorLineNumber = cursorPosition.lineNumber - 1;
    const lines = editor.getModel().getLinesContent();

    let commandOrdinal = 0;
    const linesWithCommandOrdinal: { commandOrdinal: number; lineNumber: number }[] = [];

    for (let lineNumber = 0; lineNumber < lines.length; lineNumber++) {
        let isEmptyLine = lines[lineNumber].trim() === '';

        if (isEmptyLine) {
            // increase commandCounter - we'll be starting a new command.
            linesWithCommandOrdinal.push({ commandOrdinal: commandOrdinal++, lineNumber });
        } else {
            linesWithCommandOrdinal.push({ commandOrdinal: commandOrdinal, lineNumber });
        }

        // No need to keep scanning if we're past our line and we've seen an empty line.
        if (
            lineNumber > zeroBasedCursorLineNumber &&
            commandOrdinal > linesWithCommandOrdinal[zeroBasedCursorLineNumber].commandOrdinal
        ) {
            break;
        }
    }

    const currentCommandOrdinal = linesWithCommandOrdinal[zeroBasedCursorLineNumber].commandOrdinal;
    const currentCommandLines = linesWithCommandOrdinal.filter((line) => line.commandOrdinal === currentCommandOrdinal);
    const currentCommandStartLine = currentCommandLines[0].lineNumber + 1;
    const currentCommandEndLine = currentCommandLines[currentCommandLines.length - 1].lineNumber + 1;

    // End-column of 1 means no characters will be highlighted - since columns are 1-based in monaco apis.
    // Start-column of 1 and End column of 2 means 1st character is selected.
    // Thus if a line has n column and we need to provide n+1 so that the entire line will be highlighted.
    const commandEndColumn = lines[currentCommandEndLine - 1].length + 1;
    return new monaco.Range(currentCommandStartLine, 1, currentCommandEndLine, commandEndColumn);
}