Trait exonum::encoding::Field

pub trait Field<'a> {
    unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> Self;
    fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset);
    fn field_size() -> Offset;
    fn check(
        buffer: &'a [u8], 
        from: CheckedOffset, 
        to: CheckedOffset, 
        latest_segment: CheckedOffset
    ) -> Result<CheckedOffset, Error>;
}

Trait for all types that could be a field in encoding.

Required Methods

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> Self

Read Field from buffer, with given position, beware of memory unsafety, you should check Field before read.

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

Write Field to buffer, in given position write doesn't lead to memory unsafety.

fn field_size() -> Offset

Field's header size

fn check(
    buffer: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result<CheckedOffset, Error>

Checks if data in the buffer could be deserialized. Returns an index of latest data seen.

Implementations on Foreign Types

impl<'a> Field<'a> for bool

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, _: Offset) -> Self

fn write(&self, buffer: &mut Vec<u8>, from: Offset, _: Offset)

fn check(
    buffer: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for u8

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, _: Offset) -> Self

fn write(&self, buffer: &mut Vec<u8>, from: Offset, _: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for i8

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, _: Offset) -> Self

fn write(&self, buffer: &mut Vec<u8>, from: Offset, _: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for u16

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> u16

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for i16

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> i16

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for u32

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> u32

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for i32

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> i32

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for u64

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> u64

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for i64

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> i64

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for SystemTime

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> SystemTime

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

impl<'a> Field<'a> for SocketAddr

fn field_size() -> Offset

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> SocketAddr

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

fn check(
    _: &'a [u8],
    from: CheckedOffset,
    to: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

Implementors

• impl<'a> Field<'a> for Height
• impl<'a> Field<'a> for Round
• impl<'a> Field<'a> for ValidatorId
• impl<'a> Field<'a> for &'a Signature
• impl<'a> Field<'a> for &'a PublicKey
• impl<'a> Field<'a> for &'a Hash
• impl<'a, T> Field<'a> for T where
    T: SegmentField<'a>, 
• impl<'a> Field<'a> for Block
• impl<'a> Field<'a> for TxLocation