Method nextIf

source/python.js:11489–11495

(kind)

                return cur;
            }
            nextIf(kind) {
                if (this.cur().kind !== kind) {
                    return false;
                }
                this.next();
                return true;
            }
            expect(kind) {
                if (this.cur().kind !== kind) {
                    throw new python.Error(`Unexpected '${this.cur().kind}' instead of '${kind}'.`);