Enum Utf32 

pub enum Utf32 {}

Namespace for UTF-32 constants and code-unit classification helpers.

Implementations

impl Utf32

pub const MAX_UNITS_PER_CHAR: usize = 1

Maximum number of UTF-32 code units needed for one Unicode scalar value.

pub const MAX_BYTES_PER_CHAR: usize = 4

Maximum number of serialized UTF-32 bytes needed for one Unicode scalar value.

pub const fn is_valid_unit(unit: u32) -> bool

Tests whether a UTF-32 unit is a valid Unicode scalar value.

Parameters

• unit: The UTF-32 unit to test.

Returns

Returns true if unit is a valid Unicode scalar value.

pub const fn unit_len(_ch: char) -> usize

Returns the UTF-32 unit count needed for a character.

Parameters

• _ch: The character to size.

Returns

Always returns 1.

pub fn detect_bom(bytes: &[u8]) -> Option<ByteOrder>

Detects a UTF-32 BOM and returns its byte order.

Parameters

• bytes: The byte buffer to inspect.

Returns

Returns Some(ByteOrder) for UTF-32 BOM prefixes, or None otherwise.