Struct BlobCount 

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

Represents the number of EIP-4844 blobs in a transaction

EIP-4844 introduced blob-carrying transactions that can include “blob versioned hashes” referencing data blobs stored separately. Each blob is 128KB and costs a fixed amount of blob gas.

Examples

use semioscan::BlobCount;

let count = BlobCount::new(2);
assert_eq!(count.as_usize(), 2);

Implementations

impl BlobCount

pub const ZERO: Self

Zero blobs

pub const TARGET: Self

Target number of blobs per block (EIP-4844 Dencun target = 3)

pub const MAX: Self

Maximum number of blobs per block (EIP-4844 Dencun max = 6)

pub const fn new(count: usize) -> Self

Create a new blob count (unchecked)

For validation against EIP-4844 limits, use BlobCount::new_checked.

pub fn new_checked(count: usize) -> Option<Self>

Create a new blob count with validation

Returns None if count exceeds MAX_BLOBS_PER_BLOCK_DENCUN (6 blobs). Per EIP-4844 Dencun upgrade, transactions can include 1-6 blobs.

Examples

use semioscan::BlobCount;

assert!(BlobCount::new_checked(3).is_some()); // Valid
assert!(BlobCount::new_checked(6).is_some()); // Valid (max)
assert!(BlobCount::new_checked(7).is_none()); // Invalid (exceeds max)

pub const fn as_usize(&self) -> usize

Get the inner usize value

pub fn to_blob_gas_amount(&self) -> BlobGasAmount

Calculate the blob gas amount for this blob count

Uses the EIP-4844 constant DATA_GAS_PER_BLOB (131,072 gas per blob).

Examples

use alloy_primitives::U256;
use semioscan::BlobCount;

let count = BlobCount::new(2);
let gas = count.to_blob_gas_amount();
assert_eq!(gas.as_u256(), U256::from(262_144)); // 2 * 131_072

pub fn is_valid(&self) -> bool

Check if this blob count is within EIP-4844 Dencun limits

Returns true if count is between 0 and MAX_BLOBS_PER_BLOCK_DENCUN (6).

Trait Implementations

impl Clone for BlobCount

fn clone(&self) -> BlobCount

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BlobCount

impl Debug for BlobCount

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

Formats the value using the given formatter.

impl Default for BlobCount

fn default() -> BlobCount

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for BlobCount

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for BlobCount

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

Formats the value using the given formatter.

impl Eq for BlobCount

impl From<usize> for BlobCount

fn from(value: usize) -> Self

Converts to this type from the input type.

impl Ord for BlobCount

fn cmp(&self, other: &BlobCount) -> 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 BlobCount

fn eq(&self, other: &BlobCount) -> 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 BlobCount

fn partial_cmp(&self, other: &BlobCount) -> 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 Serialize for BlobCount

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for BlobCount