Function b

src/mock/regexp/parser.js:223–227

()

            null !== u && (Lt = l, u = Dl()), null === u ? (qt = l, l = u) : l = u, l;
        }
        function b() {
            var l, u;
            return l = qt, 63 === n.charCodeAt(qt) ? (u = Hl, qt++) : (u = null, 0 === Wt && e(Ol)), 
            null !== u && (Lt = l, u = Wl()), null === u ? (qt = l, l = u) : l = u, l;
        }
        function k() {
            var l;
            return 63 === n.charCodeAt(qt) ? (l = Hl, qt++) : (l = null, 0 === Wt && e(Ol)),