Struct AsciiCodec 

pub struct AsciiCodec;

Single-byte ASCII codec for bytes.

AsciiCodec converts between one-byte ASCII-encoded data and Unicode scalar values.

Implementations

impl AsciiCodec

pub const fn charset(self) -> Charset

Returns the ASCII charset descriptor.

Returns

Returns Charset::ASCII.

pub const fn max_units_per_char(self) -> usize

Returns the maximum number of bytes needed for one ASCII character.

Returns

Returns 1.

Trait Implementations

impl CharsetCodec for AsciiCodec

fn charset(&self) -> Charset

Returns the charset descriptor for this codec.

Returns

Returns Charset::ASCII.

fn max_units_per_char(&self) -> usize

Returns the maximum number of output bytes for one character.

Returns

Returns 1.

fn decode_one( &self, input: &[u8], index: usize, ) -> CharsetDecodeResult<DecodeStatus>

Decodes one ASCII byte into a char.

Parameters

• input: Complete input byte slice.
• index: Absolute byte index at which decoding starts.

Returns

Ok(DecodeStatus::Complete { value, consumed: 1 }) for ASCII bytes.

Errors

Returns CharsetDecodeErrorKind::MalformedSequence when:

• index is out of range, or
• current byte is not in the ASCII range 0x00..=0x7F.

fn encode_one( &self, ch: char, output: &mut [u8], index: usize, ) -> CharsetEncodeResult<usize>

Encodes one char into one ASCII byte.

Parameters

• ch: The character to encode.
• output: Output byte slice.
• index: Absolute output index where writing starts.

Returns

Ok(1) when one byte is written.

Errors

• CharsetEncodeErrorKind::BufferTooSmall if index >= output.len().
• CharsetEncodeErrorKind::UnmappableCharacter if ch is not ASCII.

type Unit = u8

Storage unit used by the encoded representation.

impl Clone for AsciiCodec

fn clone(&self) -> AsciiCodec

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AsciiCodec

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for AsciiCodec

fn default() -> AsciiCodec

Returns the “default value” for a type.

impl Hash for AsciiCodec

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for AsciiCodec

fn eq(&self, other: &AsciiCodec) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for AsciiCodec

impl Eq for AsciiCodec

impl StructuralPartialEq for AsciiCodec