pub fn main(world: World) -> Void raises {
    let input: Span<u8> = "[package]\nname = \"demo\"\ncount = 42\nmax = 4294967295\nsigned = -5\nnames = [\"one\", \"two\"]\nnums = [1, 2, 4294967295]\n\n[features]\ngraph = true\nflags = [true, false]\n"
    var name_buffer: [16]u8 = [0_u8; 16]
    var decoded_buffer: [16]u8 = [0_u8; 16]
    var array_string_buffer: [16]u8 = [0_u8; 16]
    let raw_name: Maybe<Span<u8>> = std.toml.field(input, "package.name")
    let decoded: Maybe<Span<u8>> = std.toml.stringDecode(decoded_buffer, "\"demo\"")
    let name: Maybe<Span<u8>> = std.toml.string(name_buffer, input, "package.name")
    let count: Maybe<u32> = std.toml.u32(input, "package.count")
    let max: Maybe<u32> = std.toml.u32(input, "package.max")
    let signed: Maybe<i32> = std.toml.i32(input, "package.signed")
    let graph: Maybe<Bool> = std.toml.bool(input, "features.graph")
    let names: Maybe<Span<u8>> = std.toml.field(input, "package.names")
    let nums: Maybe<Span<u8>> = std.toml.field(input, "package.nums")
    let flags: Maybe<Span<u8>> = std.toml.field(input, "features.flags")
    var names_count: Maybe<usize> = null
    var first_name: Maybe<Span<u8>> = null
    var second_num_raw: Maybe<Span<u8>> = null
    var second_num_i32: Maybe<i32> = null
    var max_array_num: Maybe<u32> = null
    var second_flag: Maybe<Bool> = null
    if names.has {
        names_count = std.toml.arrayCount(names.value)
        first_name = std.toml.arrayString(array_string_buffer, names.value, 0_usize)
    }
    if nums.has {
        second_num_raw = std.toml.arrayValue(nums.value, 1_usize)
        second_num_i32 = std.toml.arrayI32(nums.value, 1_usize)
        max_array_num = std.toml.arrayU32(nums.value, 2_usize)
    }
    if flags.has {
        second_flag = std.toml.arrayBool(flags.value, 1_usize)
    }
    var table_buffer: [16]u8 = [0_u8; 16]
    var string_line_buffer: [32]u8 = [0_u8; 32]
    var u32_line_buffer: [24]u8 = [0_u8; 24]
    var bool_line_buffer: [24]u8 = [0_u8; 24]
    let table_line: Maybe<Span<u8>> = std.toml.writeTableHeader(table_buffer, "package")
    let string_line: Maybe<Span<u8>> = std.toml.writeKeyValueString(string_line_buffer, "name", "ze\"ro")
    let u32_line: Maybe<Span<u8>> = std.toml.writeKeyValueU32(u32_line_buffer, "count", 4294967295_u32)
    let bool_line: Maybe<Span<u8>> = std.toml.writeKeyValueBool(bool_line_buffer, "graph", true)
    var invalid_string_line_buffer: [32]u8 = [0_u8; 32]
    var invalid_u32_line_buffer: [16]u8 = [0_u8; 16]
    var invalid_bool_line_buffer: [24]u8 = [0_u8; 24]
    var invalid_table_buffer: [32]u8 = [0_u8; 32]
    let invalid_string_line: Maybe<Span<u8>> = std.toml.writeKeyValueString(invalid_string_line_buffer, "a = 1\nb", "x")
    let invalid_u32_line: Maybe<Span<u8>> = std.toml.writeKeyValueU32(invalid_u32_line_buffer, "bad key", 1_u32)
    let invalid_bool_line: Maybe<Span<u8>> = std.toml.writeKeyValueBool(invalid_bool_line_buffer, "bad..key", true)
    let invalid_table_line: Maybe<Span<u8>> = std.toml.writeTableHeader(invalid_table_buffer, "package]\nadmin")
    if std.toml.validate("[package]\nname = \"demo\"\n") && std.toml.validateBytes(input) && raw_name.has && std.mem.eql(raw_name.value, "\"demo\"") && decoded.has && std.mem.eql(decoded.value, "demo") && name.has && std.mem.eql(name.value, "demo") && count.has && count.value == 42 && max.has && max.value == 4294967295_u32 && signed.has && signed.value == 0 - 5 && graph.has && graph.value && names_count.has && names_count.value == 2_usize && first_name.has && std.mem.eql(first_name.value, "one") && second_num_raw.has && std.mem.eql(second_num_raw.value, "2") && second_num_i32.has && second_num_i32.value == 2 && max_array_num.has && max_array_num.value == 4294967295_u32 && second_flag.has && !second_flag.value && table_line.has && std.mem.eql(table_line.value, "[package]\n") && string_line.has && std.mem.eql(string_line.value, "name = \"ze\\\"ro\"\n") && u32_line.has && std.toml.validate(u32_line.value) && std.mem.eql(u32_line.value, "count = 4294967295\n") && bool_line.has && std.mem.eql(bool_line.value, "graph = true\n") && !invalid_string_line.has && !invalid_u32_line.has && !invalid_bool_line.has && !invalid_table_line.has {
        check world.out.write("toml ok\n")
    }
}