Struct compact_encoding::types::State

pub struct State { /* private fields */ }

State.

Implementations

impl State

pub fn new() -> State

Create empty state

pub fn new_with_size(size: usize) -> (State, Box<[u8]>)

Create a state and buffer with an already known size. With this, you can/must skip the preencode step.

pub fn new_with_start_and_end(start: usize, end: usize) -> State

Create a state with a start and end already known.

pub fn from_buffer(buffer: &[u8]) -> State

Create a state from existing buffer.

pub fn start(&self) -> usize

Start value

pub fn set_start(&mut self, value: usize) -> Result<(), EncodingError>

Set start value

pub fn end(&self) -> usize

End value

pub fn set_end(&mut self, value: usize)

Set end value

pub fn add_start(&mut self, increment: usize) -> Result<usize, EncodingError>

Add to start handling overflow and out of bounds.

pub fn add_end(&mut self, increment: usize) -> Result<usize, EncodingError>

Add to end handling overflow

pub fn create_buffer(&self) -> Box<[u8]>

After calling preencode(), this allocates the right size buffer to the heap. Follow this with the same number of encode() steps to fill the created buffer.

pub fn set_byte_to_buffer( &mut self, value: u8, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Safely set single byte to buffer at state.start and then increment state.start, returning new state.start.

pub fn set_slice_to_buffer( &mut self, value: &[u8], buffer: &mut [u8] ) -> Result<usize, EncodingError>

Safely set byte slice to buffer at state.start and then increment state.start with slice length, returning new state.start.

pub fn set_slice_to_buffer_fixed( &mut self, value: &[u8], buffer: &mut [u8], size: usize ) -> Result<usize, EncodingError>

Safely set byte slice of fixed len to buffer at state.start and then increment state.start with slice length, returning new state.start.

pub fn validate( &mut self, size: usize, buffer: &[u8] ) -> Result<Range<usize>, EncodingError>

Validate size can be decoded from buffer, return current start.

pub fn preencode_str(&mut self, value: &str) -> Result<usize, EncodingError>

Preencode a string slice

pub fn encode_str( &mut self, value: &str, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode a string slice

pub fn decode_string(&mut self, buffer: &[u8]) -> Result<String, EncodingError>

Decode a String

pub fn preencode_uint_var<T: From<u32> + Ord>( &mut self, uint: &T ) -> Result<usize, EncodingError>

Preencode a variable length usigned int

pub fn decode_u8(&mut self, buffer: &[u8]) -> Result<u8, EncodingError>

Decode a fixed length u8

pub fn decode_u16(&mut self, buffer: &[u8]) -> Result<u16, EncodingError>

Decode a fixed length u16

pub fn encode_u32_var( &mut self, value: &u32, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode a variable length u32

pub fn encode_u32( &mut self, uint: u32, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode u32 to 4 LE bytes.

pub fn decode_u32_var(&mut self, buffer: &[u8]) -> Result<u32, EncodingError>

Decode a variable length u32

pub fn decode_u32(&mut self, buffer: &[u8]) -> Result<u32, EncodingError>

Decode a fixed length u32

pub fn encode_u64_var( &mut self, value: &u64, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode a variable length u64

pub fn encode_u64( &mut self, uint: u64, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode u64 to 8 LE bytes.

pub fn decode_u64_var(&mut self, buffer: &[u8]) -> Result<u64, EncodingError>

Decode a variable length u64

pub fn decode_u64(&mut self, buffer: &[u8]) -> Result<u64, EncodingError>

Decode a fixed length u64

pub fn preencode_buffer(&mut self, value: &[u8]) -> Result<usize, EncodingError>

Preencode a byte buffer

pub fn preencode_buffer_vec( &mut self, value: &Vec<u8> ) -> Result<usize, EncodingError>

Preencode a vector byte buffer

pub fn encode_buffer( &mut self, value: &[u8], buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode a byte buffer

pub fn decode_buffer( &mut self, buffer: &[u8] ) -> Result<Box<[u8]>, EncodingError>

Decode a byte buffer

pub fn decode_buffer_vec( &mut self, buffer: &[u8] ) -> Result<Vec<u8>, EncodingError>

Decode a vector byte buffer

pub fn preencode_raw_buffer( &mut self, value: &Vec<u8> ) -> Result<usize, EncodingError>

Preencode a raw byte buffer. Only possible to use if this is the last value of the State.

pub fn encode_raw_buffer( &mut self, value: &[u8], buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode a raw byte buffer. Only possible to use if this is the last value of the State.

pub fn decode_raw_buffer( &mut self, buffer: &[u8] ) -> Result<Vec<u8>, EncodingError>

Decode a raw byte buffer. Only possible to use if this is the last value of the State.

pub fn preencode_fixed_32(&mut self) -> Result<usize, EncodingError>

Preencode a fixed 32 byte buffer

pub fn encode_fixed_32( &mut self, value: &[u8], buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode a fixed 32 byte buffer

pub fn decode_fixed_32( &mut self, buffer: &[u8] ) -> Result<Box<[u8]>, EncodingError>

Decode a fixed 32 byte buffer

pub fn preencode_string_array( &mut self, value: &Vec<String> ) -> Result<usize, EncodingError>

Preencode a string array

pub fn encode_string_array( &mut self, value: &Vec<String>, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode a String array

pub fn decode_string_array( &mut self, buffer: &[u8] ) -> Result<Vec<String>, EncodingError>

Decode a String array

pub fn preencode_usize_var( &mut self, value: &usize ) -> Result<usize, EncodingError>

Preencode a variable length usize

pub fn encode_usize_var( &mut self, value: &usize, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode a variable length usize

pub fn decode_usize_var( &mut self, buffer: &[u8] ) -> Result<usize, EncodingError>

Decode a variable length usize.

Trait Implementations

impl Clone for State

fn clone(&self) -> State

Returns a copy of the value.

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

Performs copy-assignment from source.

impl CompactEncoding<Box<[u8], Global>> for State

fn preencode(&mut self, value: &Box<[u8]>) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &Box<[u8]>, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<Box<[u8]>, EncodingError>

Decode

impl CompactEncoding<String> for State

fn preencode(&mut self, value: &String) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &String, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<String, EncodingError>

Decode

impl CompactEncoding<Vec<[u8; 32], Global>> for State

fn preencode(&mut self, value: &Vec<[u8; 32]>) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &Vec<[u8; 32]>, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<Vec<[u8; 32]>, EncodingError>

Decode

impl CompactEncoding<Vec<String, Global>> for State

fn preencode(&mut self, value: &Vec<String>) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &Vec<String>, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<Vec<String>, EncodingError>

Decode

impl CompactEncoding<Vec<u32, Global>> for State

fn preencode(&mut self, value: &Vec<u32>) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &Vec<u32>, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<Vec<u32>, EncodingError>

Decode

impl CompactEncoding<Vec<u8, Global>> for State

fn preencode(&mut self, value: &Vec<u8>) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &Vec<u8>, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<Vec<u8>, EncodingError>

Decode

impl CompactEncoding<u32> for State

fn preencode(&mut self, value: &u32) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &u32, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<u32, EncodingError>

Decode

impl CompactEncoding<u64> for State

fn preencode(&mut self, value: &u64) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &u64, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<u64, EncodingError>

Decode

impl CompactEncoding<u8> for State

fn preencode(&mut self, _: &u8) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &u8, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<u8, EncodingError>

Decode

impl CompactEncoding<usize> for State

fn preencode(&mut self, value: &usize) -> Result<usize, EncodingError>

Preencode

fn encode( &mut self, value: &usize, buffer: &mut [u8] ) -> Result<usize, EncodingError>

Encode

fn decode(&mut self, buffer: &[u8]) -> Result<usize, EncodingError>

Decode

impl Debug for State

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

Formats the value using the given formatter.

impl Default for State

fn default() -> Self

Create empty state