function computeMonthsParse()

in charts/shared/moment.js [1170:1211]

• 37 lines of code
• 6 McCabe index (conditional complexity)

function computeMonthsParse() {
    function cmpLenRev(a, b) {
        return b.length - a.length;
    }

    var shortPieces = [],
        longPieces = [],
        mixedPieces = [],
        i,
        mom;
    for (i = 0; i < 12; i++) {
        // make the regex if we don't have it already
        mom = createUTC([2000, i]);
        shortPieces.push(this.monthsShort(mom, ''));
        longPieces.push(this.months(mom, ''));
        mixedPieces.push(this.months(mom, ''));
        mixedPieces.push(this.monthsShort(mom, ''));
    }
    // Sorting makes sure if one month (or abbr) is a prefix of another it
    // will match the longer piece.
    shortPieces.sort(cmpLenRev);
    longPieces.sort(cmpLenRev);
    mixedPieces.sort(cmpLenRev);
    for (i = 0; i < 12; i++) {
        shortPieces[i] = regexEscape(shortPieces[i]);
        longPieces[i] = regexEscape(longPieces[i]);
    }
    for (i = 0; i < 24; i++) {
        mixedPieces[i] = regexEscape(mixedPieces[i]);
    }

    this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
    this._monthsShortRegex = this._monthsRegex;
    this._monthsStrictRegex = new RegExp(
        '^(' + longPieces.join('|') + ')',
        'i'
    );
    this._monthsShortStrictRegex = new RegExp(
        '^(' + shortPieces.join('|') + ')',
        'i'
    );
}