Struct Decoder 

pub struct Decoder { /* private fields */ }

Stateful standard basE91 decoder.

A call to finish ends the current message and consumes the decoder, so the same stream cannot be continued afterwards. The consuming contract is enforced by the type system: the decoder is not Copy, so reusing it after finish fails to compile.

use fastbase91_core::{DecodeOptions, Decoder};
let mut decoder = Decoder::new(DecodeOptions::new());
let mut output = [0_u8; 4];
let _tail = decoder.finish();
// `finish` consumed the decoder; decoding more must not compile.
let _ = decoder.update(b"AA", &mut output);

Implementations

impl Decoder

pub const fn new(options: DecodeOptions) -> Self

Creates a decoder with the requested policy.

pub fn update( &mut self, input: &[u8], output: &mut [u8], ) -> Result<usize, DecodeError>

Decodes a chunk into caller-provided storage.

Capacity is checked first using a content-independent upper bound; on OutputTooSmall neither the decoder state nor the output is changed. In strict mode the first byte outside the alphabet stops decoding with InvalidByte, whose offset is the 0-based index of that byte within this input; the decoder state is left unchanged, but bytes already written to output are unspecified and must be discarded.

pub fn finish(self) -> Result<Option<u8>, DecodeError>

Returns the final decoded byte, if an unpaired symbol remains.

Trait Implementations

impl Clone for Decoder

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Decoder

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

Formats the value using the given formatter.

impl Eq for Decoder

impl PartialEq for Decoder

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Decoder