Struct ChainId 

pub struct ChainId(/* private fields */);

Ethereum chain identifier.

This type enforces canonical integer encoding only. EIP-155 assigns chain ID 0 to unsigned legacy transactions; signed transaction validation must reject chain ID 0 independently.

Implementations

impl ChainId

pub fn encoded_rlp_len(self) -> Result<usize, PrimitiveRlpError>

Returns the canonical RLP encoded length.

pub fn encode_rlp(self, output: &mut [u8]) -> Result<usize, PrimitiveRlpError>

Canonically encodes this value into output.

Returns the number of bytes written. output is not modified unless this function returns Ok.

pub fn try_from_rlp( input: &[u8], limits: DecodeLimits, ) -> Result<Self, PrimitiveRlpError>

Decodes exactly one canonical RLP integer into this domain.

EIP-155 note: This function accepts ChainId(0), which is reserved for unsigned legacy transactions. Callers that validate signed transaction chain IDs must reject ChainId(0) independently; this decoder does not enforce that constraint.

pub fn try_from_rlp_signed( input: &[u8], limits: DecodeLimits, ) -> Result<Self, PrimitiveRlpError>

Decodes a signed EIP-155 transaction chain ID.

Rejects 0, which is reserved for unsigned legacy transactions and must not be accepted as a signed transaction replay domain.

impl ChainId

pub const fn new(value: u64) -> Self

Creates a new value.

pub const fn get(self) -> u64

Returns the raw integer value.

pub fn try_from_canonical_be_slice(bytes: &[u8]) -> Result<Self, PrimitiveError>

Creates a value from a canonical RLP integer payload.

The empty payload represents zero. Non-empty payloads must be shortest-form unsigned big-endian bytes without a leading zero.

impl ChainId

pub fn try_from_signed_canonical_be_slice( bytes: &[u8], ) -> Result<Self, PrimitiveError>

Creates a signed-transaction chain ID from a canonical RLP integer payload.

Rejects 0, which EIP-155 reserves for unsigned legacy transactions.

Trait Implementations

impl Clone for ChainId

fn clone(&self) -> ChainId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ChainId

impl Debug for ChainId

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

Formats the value using the given formatter.

impl Eq for ChainId

impl From<ChainId> for u64

fn from(value: ChainId) -> Self

Converts to this type from the input type.

impl From<u64> for ChainId

fn from(value: u64) -> Self

Converts to this type from the input type.

impl Hash for ChainId

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 Ord for ChainId

fn cmp(&self, other: &ChainId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ChainId

fn eq(&self, other: &ChainId) -> 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 PartialOrd for ChainId

fn partial_cmp(&self, other: &ChainId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl RlpDecode for ChainId

type Error = PrimitiveRlpError

Error returned by this decoder.

fn decode_rlp(input: &[u8], limits: DecodeLimits) -> Result<Self, Self::Error>

Decodes exactly one canonical RLP item from input.

fn decode_rlp_item(item: RlpItem<'_>) -> Result<Self, Self::Error>

Decodes one already-bounded child item from an outer RLP list.

impl RlpEncode for ChainId

type Error = PrimitiveRlpError

Error returned by this encoder.

fn encoded_rlp_len(&self) -> Result<usize, Self::Error>

Returns the exact canonical RLP encoded length.

fn encode_rlp(&self, output: &mut [u8]) -> Result<usize, Self::Error>

Canonically encodes self into output.

impl StructuralPartialEq for ChainId