Struct LogsBloom

pub struct LogsBloom(pub Bloom);

Tuple Fields

0: Bloom

Implementations

impl LogsBloom

pub fn accrue_log(&mut self, log: &Log)

Methods from Deref<Target = Bloom>

pub const ZERO: Bloom

pub fn randomize(&mut self)

Fills this fixed byte array with the default cryptographic random number generator.

See random for more details.

pub fn try_randomize(&mut self) -> Result<(), Error>

Tries to fill this fixed byte array with the default cryptographic random number generator.

See random for more details.

pub fn randomize_with<R>(&mut self, rng: &mut R)

where R: RngCore + ?Sized,

Fills this fixed byte array with the given random number generator.

pub fn try_randomize_with<R>( &mut self, rng: &mut R, ) -> Result<(), <R as TryRngCore>::Error>

where R: TryRngCore + ?Sized,

Tries to fill this fixed byte array with the given random number generator.

pub fn covers(&self, b: &Bloom) -> bool

Returns true if all bits set in b are also set in self.

pub fn const_eq(&self, other: &Bloom) -> bool

Compile-time equality. NOT constant-time equality.

pub fn data(&self) -> &[u8; 256]

Returns a reference to the underlying data.

pub fn data_mut(&mut self) -> &mut [u8; 256]

Returns a mutable reference to the underlying data.

pub fn contains_input(&self, input: BloomInput<'_>) -> bool

Returns true if this bloom filter is a possible superset of the other bloom filter, admitting false positives.

Note: This method may return false positives. This is inherent to the bloom filter data structure.

pub fn contains(&self, other: &Bloom) -> bool

Returns true if this bloom filter is a possible superset of the other bloom filter, admitting false positives.

Note: This method may return false positives. This is inherent to the bloom filter data structure.

pub fn accrue(&mut self, input: BloomInput<'_>)

Accrues the input into the bloom filter.

pub fn accrue_bloom(&mut self, bloom: &Bloom)

Accrues the input into the bloom filter.

pub fn m3_2048(&mut self, bytes: &[u8])

Specialised Bloom filter that sets three bits out of 2048, given an arbitrary byte sequence.

See Section 4.3.1 “Transaction Receipt” of the Ethereum Yellow Paper (page 6).

pub fn m3_2048_hashed(&mut self, hash: &FixedBytes<32>)

m3_2048 but with a pre-hashed input.

pub fn accrue_raw_log(&mut self, address: Address, topics: &[FixedBytes<32>])

Ingests a raw log into the bloom filter.

pub fn accrue_log(&mut self, log: &Log)

Ingests a log into the bloom filter.

pub fn contains_raw_log( &self, address: Address, topics: &[FixedBytes<32>], ) -> bool

True if the bloom filter contains a log with given address and topics.

Note: This method may return false positives. This is inherent to the bloom filter data structure.

pub fn contains_log(&self, log: &Log) -> bool

True if the bloom filter contains a log with given address and topics.

Note: This method may return false positives. This is inherent to the bloom filter data structure.

Methods from Deref<Target = FixedBytes<256>>

pub const ZERO: FixedBytes<N>

pub fn randomize(&mut self)

Fills this [FixedBytes] with the default cryptographic random number generator.

See random for more details.

pub fn try_randomize(&mut self) -> Result<(), Error>

Tries to fill this [FixedBytes] with the default cryptographic random number generator.

See random for more details.

pub fn randomize_with<R>(&mut self, rng: &mut R)

where R: RngCore + ?Sized,

Fills this [FixedBytes] with the given random number generator.

pub fn try_randomize_with<R>( &mut self, rng: &mut R, ) -> Result<(), <R as TryRngCore>::Error>

where R: TryRngCore + ?Sized,

Tries to fill this [FixedBytes] with the given random number generator.

pub fn as_slice(&self) -> &[u8]

Returns a slice containing the entire array. Equivalent to &s[..].

pub fn as_mut_slice(&mut self) -> &mut [u8]

Returns a mutable slice containing the entire array. Equivalent to &mut s[..].

pub fn covers(&self, other: &FixedBytes<N>) -> bool

Returns true if all bits set in self are also set in b.

pub fn const_eq(&self, other: &FixedBytes<N>) -> bool

Compile-time equality. NOT constant-time equality.

pub fn is_zero(&self) -> bool

Returns true if no bits are set.

pub fn const_is_zero(&self) -> bool

Returns true if no bits are set.

Methods from Deref<Target = [u8; N]>

pub fn as_ascii(&self) -> Option<&[AsciiChar; N]>

🔬This is a nightly-only experimental API. (ascii_char)

Converts this array of bytes into an array of ASCII characters, or returns None if any of the characters is non-ASCII.

Examples

#![feature(ascii_char)]

const HEX_DIGITS: [std::ascii::Char; 16] =
    *b"0123456789abcdef".as_ascii().unwrap();

assert_eq!(HEX_DIGITS[1].as_str(), "1");
assert_eq!(HEX_DIGITS[10].as_str(), "a");

pub unsafe fn as_ascii_unchecked(&self) -> &[AsciiChar; N]

🔬This is a nightly-only experimental API. (ascii_char)

Converts this array of bytes into an array of ASCII characters, without checking whether they’re valid.

Safety

Every byte in the array must be in 0..=127, or else this is UB.

pub fn as_slice(&self) -> &[T]

Returns a slice containing the entire array. Equivalent to &s[..].

pub fn as_mut_slice(&mut self) -> &mut [T]

Returns a mutable slice containing the entire array. Equivalent to &mut s[..].

pub fn each_ref(&self) -> [&T; N]

Borrows each element and returns an array of references with the same size as self.

Example

let floats = [3.1, 2.7, -1.0];
let float_refs: [&f64; 3] = floats.each_ref();
assert_eq!(float_refs, [&3.1, &2.7, &-1.0]);

This method is particularly useful if combined with other methods, like map. This way, you can avoid moving the original array if its elements are not Copy.

let strings = ["Ferris".to_string(), "♥".to_string(), "Rust".to_string()];
let is_ascii = strings.each_ref().map(|s| s.is_ascii());
assert_eq!(is_ascii, [true, false, true]);

// We can still access the original array: it has not been moved.
assert_eq!(strings.len(), 3);

pub fn each_mut(&mut self) -> [&mut T; N]

Borrows each element mutably and returns an array of mutable references with the same size as self.

Example

let mut floats = [3.1, 2.7, -1.0];
let float_refs: [&mut f64; 3] = floats.each_mut();
*float_refs[0] = 0.0;
assert_eq!(float_refs, [&mut 0.0, &mut 2.7, &mut -1.0]);
assert_eq!(floats, [0.0, 2.7, -1.0]);

pub fn split_array_ref<const M: usize>(&self) -> (&[T; M], &[T])

🔬This is a nightly-only experimental API. (split_array)

Divides one array reference into two at an index.

The first will contain all indices from [0, M) (excluding the index M itself) and the second will contain all indices from [M, N) (excluding the index N itself).

Panics

Panics if M > N.

Examples

#![feature(split_array)]

let v = [1, 2, 3, 4, 5, 6];

{
   let (left, right) = v.split_array_ref::<0>();
   assert_eq!(left, &[]);
   assert_eq!(right, &[1, 2, 3, 4, 5, 6]);
}

{
    let (left, right) = v.split_array_ref::<2>();
    assert_eq!(left, &[1, 2]);
    assert_eq!(right, &[3, 4, 5, 6]);
}

{
    let (left, right) = v.split_array_ref::<6>();
    assert_eq!(left, &[1, 2, 3, 4, 5, 6]);
    assert_eq!(right, &[]);
}

pub fn split_array_mut<const M: usize>(&mut self) -> (&mut [T; M], &mut [T])

🔬This is a nightly-only experimental API. (split_array)

Divides one mutable array reference into two at an index.

The first will contain all indices from [0, M) (excluding the index M itself) and the second will contain all indices from [M, N) (excluding the index N itself).

Panics

Panics if M > N.

Examples

#![feature(split_array)]

let mut v = [1, 0, 3, 0, 5, 6];
let (left, right) = v.split_array_mut::<2>();
assert_eq!(left, &mut [1, 0][..]);
assert_eq!(right, &mut [3, 0, 5, 6]);
left[1] = 2;
right[1] = 4;
assert_eq!(v, [1, 2, 3, 4, 5, 6]);

pub fn rsplit_array_ref<const M: usize>(&self) -> (&[T], &[T; M])

🔬This is a nightly-only experimental API. (split_array)

Divides one array reference into two at an index from the end.

The first will contain all indices from [0, N - M) (excluding the index N - M itself) and the second will contain all indices from [N - M, N) (excluding the index N itself).

Panics

Panics if M > N.

Examples

#![feature(split_array)]

let v = [1, 2, 3, 4, 5, 6];

{
   let (left, right) = v.rsplit_array_ref::<0>();
   assert_eq!(left, &[1, 2, 3, 4, 5, 6]);
   assert_eq!(right, &[]);
}

{
    let (left, right) = v.rsplit_array_ref::<2>();
    assert_eq!(left, &[1, 2, 3, 4]);
    assert_eq!(right, &[5, 6]);
}

{
    let (left, right) = v.rsplit_array_ref::<6>();
    assert_eq!(left, &[]);
    assert_eq!(right, &[1, 2, 3, 4, 5, 6]);
}

pub fn rsplit_array_mut<const M: usize>(&mut self) -> (&mut [T], &mut [T; M])

🔬This is a nightly-only experimental API. (split_array)

Divides one mutable array reference into two at an index from the end.

The first will contain all indices from [0, N - M) (excluding the index N - M itself) and the second will contain all indices from [N - M, N) (excluding the index N itself).

Panics

Panics if M > N.

Examples

#![feature(split_array)]

let mut v = [1, 0, 3, 0, 5, 6];
let (left, right) = v.rsplit_array_mut::<4>();
assert_eq!(left, &mut [1, 0]);
assert_eq!(right, &mut [3, 0, 5, 6][..]);
left[1] = 2;
right[1] = 4;
assert_eq!(v, [1, 2, 3, 4, 5, 6]);

Trait Implementations

impl Clone for LogsBloom

fn clone(&self) -> LogsBloom

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LogsBloom

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

Formats the value using the given formatter.

impl Default for LogsBloom

fn default() -> LogsBloom

Returns the “default value” for a type.

impl Deref for LogsBloom

type Target = Bloom

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for LogsBloom

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<'de> Deserialize<'de> for LogsBloom

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<[u8; 256]> for LogsBloom

fn from(value: [u8; 256]) -> Self

Converts to this type from the input type.

impl From<Bloom> for LogsBloom

fn from(value: Bloom) -> Self

Converts to this type from the input type.

impl From<LogsBloom> for [u8; 256]

fn from(value: LogsBloom) -> Self

Converts to this type from the input type.

impl From<LogsBloom> for Bloom

fn from(value: LogsBloom) -> Self

Converts to this type from the input type.

impl PartialEq for LogsBloom

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

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 LogsBloom

impl Eq for LogsBloom

impl StructuralPartialEq for LogsBloom