parseSwitchProngList

    pub fn parseSwitchProngList(p: *Parser) Error!bool {
        const def_index = @backingInt(Def.defSwitchProngList);
        if (p.depths[def_index] > max_depth) return error.MaxDepth;
        p.depths[def_index] += 1;
        defer p.depths[def_index] -= 1;
        return blk_0: {
            const pos_0 = p.i;
            if ((blk_3: {
                const pos_3 = p.i;
                if (try p.parseSwitchProng() and (blk_6: {
                    const pos_6 = p.i;
                    if (try p.parseCOMMA() and try p.parseSwitchProngList()) break :blk_6 true;
                    p.i = pos_6;
                    break :blk_6 false;
                } or true)) break :blk_3 true;
                p.i = pos_3;
                break :blk_3 false;
            } or true)) break :blk_0 true;
            p.i = pos_0;
            break :blk_0 false;
        };
    }