parsenewline

    pub fn parsenewline(p: *Parser) Error!bool {
        const def_index = @backingInt(Def.defnewline);
        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_1: {
                const pos_1 = p.i;
                const match_1 = blk_3: {
                    const pos_3 = p.i;
                    if (blk_4: {
                        if (std.mem.startsWith(u8, p.source[p.i..], "\n")) {
                            p.i += 1;
                            break :blk_4 true;
                        }
                        break :blk_4 false;
                    }) break :blk_3 true;
                    p.i = pos_3;
                    if (blk_4: {
                        if (std.mem.startsWith(u8, p.source[p.i..], "\r\n")) {
                            p.i += 2;
                            break :blk_4 true;
                        }
                        break :blk_4 false;
                    }) break :blk_3 true;
                    p.i = pos_3;
                    if (try p.parseeof()) break :blk_3 true;
                    p.i = pos_3;
                    break :blk_3 false;
                };
                p.i = pos_1;
                break :blk_1 match_1;
            }) break :blk_0 true;
            p.i = pos_0;
            break :blk_0 false;
        };
    }