Enum BlockNumberOrTag

pub enum BlockNumberOrTag {
    Latest,
    Finalized,
    Safe,
    Earliest,
    Pending,
    Number(u64),
}

A block Number (or tag - “latest”, “earliest”, “pending”)

This enum allows users to specify a block in a flexible manner.

Variants

Latest

Latest block

Finalized

Finalized block accepted as canonical

Safe

Safe head block

Earliest

Earliest block (genesis)

Pending

Pending block (not yet part of the blockchain)

Number(u64)

Block by number from canonical chain

Implementations

impl BlockNumberOrTag

pub const fn as_number(&self) -> Option<u64>

Returns the numeric block number if explicitly set

pub const fn is_number(&self) -> bool

Returns true if a numeric block number is set

pub const fn is_latest(&self) -> bool

Returns true if it’s “latest”

pub const fn is_finalized(&self) -> bool

Returns true if it’s “finalized”

pub const fn is_safe(&self) -> bool

Returns true if it’s “safe”

pub const fn is_pending(&self) -> bool

Returns true if it’s “pending”

pub const fn is_earliest(&self) -> bool

Returns true if it’s “earliest”

Trait Implementations

impl Clone for BlockNumberOrTag

fn clone(&self) -> BlockNumberOrTag

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BlockNumberOrTag

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

Formats the value using the given formatter.

impl Default for BlockNumberOrTag

fn default() -> BlockNumberOrTag

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for BlockNumberOrTag

Available on crate feature serde only.

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for BlockNumberOrTag

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

Formats the value using the given formatter.

impl From<BlockNumberOrTag> for BlockId

fn from(num: BlockNumberOrTag) -> Self

Converts to this type from the input type.

impl From<Uint<64, 1>> for BlockNumberOrTag

fn from(num: U64) -> Self

Converts to this type from the input type.

impl From<u64> for BlockNumberOrTag

fn from(num: u64) -> Self

Converts to this type from the input type.

impl FromStr for BlockNumberOrTag

type Err = ParseBlockNumberError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for BlockNumberOrTag

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 BlockNumberOrTag

fn eq(&self, other: &BlockNumberOrTag) -> 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 Serialize for BlockNumberOrTag

Available on crate feature serde only.

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for BlockNumberOrTag

impl Eq for BlockNumberOrTag

impl StructuralPartialEq for BlockNumberOrTag

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 12 bytes

Size for each variant:

• Latest: 0 bytes
• Finalized: 0 bytes
• Safe: 0 bytes
• Earliest: 0 bytes
• Pending: 0 bytes
• Number: 8 bytes