Function parse

_benchmarks/sample_echarts.js:2493–2578

(colorStr, rgbaArr)

        lastRemovedArr = colorCache.put(colorStr, lastRemovedArr || (rgbaArr.slice()));
    }
    function parse(colorStr, rgbaArr) {
        if (!colorStr) {
            return;
        }
        rgbaArr = rgbaArr || [];
        var cached = colorCache.get(colorStr);
        if (cached) {
            return copyRgba(rgbaArr, cached);
        }
        colorStr = colorStr + '';
        var str = colorStr.replace(/ /g, '').toLowerCase();
        if (str in kCSSColorTable) {
            copyRgba(rgbaArr, kCSSColorTable[str]);
            putToCache(colorStr, rgbaArr);
            return rgbaArr;
        }
        var strLen = str.length;
        if (str.charAt(0) === '#') {
            if (strLen === 4 || strLen === 5) {
                var iv = parseInt(str.slice(1, 4), 16);
                if (!(iv >= 0 && iv <= 0xfff)) {
                    setRgba(rgbaArr, 0, 0, 0, 1);
                    return;
                }
                setRgba(rgbaArr, ((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8), (iv & 0xf0) | ((iv & 0xf0) >> 4), (iv & 0xf) | ((iv & 0xf) << 4), strLen === 5 ? parseInt(str.slice(4), 16) / 0xf : 1);
                putToCache(colorStr, rgbaArr);
                return rgbaArr;
            }
            else if (strLen === 7 || strLen === 9) {
                var iv = parseInt(str.slice(1, 7), 16);
                if (!(iv >= 0 && iv <= 0xffffff)) {
                    setRgba(rgbaArr, 0, 0, 0, 1);
                    return;
                }
                setRgba(rgbaArr, (iv & 0xff0000) >> 16, (iv & 0xff00) >> 8, iv & 0xff, strLen === 9 ? parseInt(str.slice(7), 16) / 0xff : 1);
                putToCache(colorStr, rgbaArr);
                return rgbaArr;
            }
            return;
        }
        var op = str.indexOf('(');
        var ep = str.indexOf(')');
        if (op !== -1 && ep + 1 === strLen) {
            var fname = str.substr(0, op);
            var params = str.substr(op + 1, ep - (op + 1)).split(',');
            var alpha = 1;
            switch (fname) {
                case 'rgba':
                    if (params.length !== 4) {
                        return params.length === 3
                            ? setRgba(rgbaArr, +params[0], +params[1], +params[2], 1)
                            : setRgba(rgbaArr, 0, 0, 0, 1);
                    }
                    alpha = parseCssFloat(params.pop());
                case 'rgb':
                    if (params.length !== 3) {
                        setRgba(rgbaArr, 0, 0, 0, 1);
                        return;