function errorHighlighter()

in error_highlighter.js [29:65]

• 13 lines of code
• 7 McCabe index (conditional complexity)

function errorHighlighter(err, options) {
    options = options || {};
    var errColor = colorer(options.errorColor || 'red+bold');

    var hasOffset = !(err.offset === undefined || err.offset === null);
    var hasEnd = !(err.endOffset === undefined || err.endOffset === null);
    var within = false;

    if (!hasOffset) return null;
    if (hasEnd) {
        return decorateRangedError;
    } else {
        return decorateError;
    }

    function decorateRangedError(totalOffset, screenOffset, str) {
        if (totalOffset === err.offset) {
            within = totalOffset !== err.endOffset-1;
            return errColor(stripColor(str));
        } else if (totalOffset === err.endOffset-1) {
            within = false;
            return errColor(stripColor(str));
        } else if (within) {
            return errColor(stripColor(str));
        } else {
            return str;
        }
    }

    function decorateError(totalOffset, screenOffset, str) {
        if (totalOffset === err.offset) {
            return errColor(stripColor(str));
        } else {
            return str;
        }
    }
}