Struct ethbloom::Bloom

#[repr(C)]
pub struct Bloom(pub [u8; 256]);

Bloom hash type with 256 bytes (2048 bits) size.

Methods

impl Bloom

pub fn repeat_byte(byte: u8) -> Bloom

Returns a new fixed hash where all bits are set to the given byte.

pub fn zero() -> Bloom

Returns a new zero-initialized fixed hash.

pub fn len_bytes() -> usize

Returns the size of this hash in bytes.

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

Extracts a byte slice containing the entire fixed hash.

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

Extracts a mutable byte slice containing the entire fixed hash.

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

Extracts a reference to the byte array containing the entire fixed hash.

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

Extracts a reference to the byte array containing the entire fixed hash.

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

Returns the inner bytes array.

pub fn as_ptr(&self) -> *const u8

Returns a constant raw pointer to the value.

pub fn as_mut_ptr(&mut self) -> *mut u8

Returns a mutable raw pointer to the value.

pub fn assign_from_slice(&mut self, src: &[u8])

Assign the bytes from the byte slice src to self.

Note

The given bytes are interpreted in big endian order.

Panics

If the length of src and the number of bytes in self do not match.

pub fn from_slice(src: &[u8]) -> Self

Create a new fixed-hash from the given slice src.

Note

The given bytes are interpreted in big endian order.

Panics

If the length of src and the number of bytes in Self do not match.

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

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

pub fn is_zero(&self) -> bool

Returns true if no bits are set.

impl Bloom

Utilities using the byteorder crate.

pub fn to_low_u64_be(&self) -> u64

Returns the lowest 8 bytes interpreted as big-endian.

Note

For hash type with less than 8 bytes the missing bytes are interpreted as being zero.

pub fn to_low_u64_le(&self) -> u64

Returns the lowest 8 bytes interpreted as little-endian.

Note

For hash type with less than 8 bytes the missing bytes are interpreted as being zero.

pub fn to_low_u64_ne(&self) -> u64

Returns the lowest 8 bytes interpreted as native-endian.

Note

For hash type with less than 8 bytes the missing bytes are interpreted as being zero.

pub fn from_low_u64_be(val: u64) -> Self

Creates a new hash type from the given u64 value.

Note

• The given u64 value is interpreted as big endian.
• Ignores the most significant bits of the given value if the hash type has less than 8 bytes.

pub fn from_low_u64_le(val: u64) -> Self

Creates a new hash type from the given u64 value.

Note

• The given u64 value is interpreted as little endian.
• Ignores the most significant bits of the given value if the hash type has less than 8 bytes.

pub fn from_low_u64_ne(val: u64) -> Self

Creates a new hash type from the given u64 value.

Note

• The given u64 value is interpreted as native endian.
• Ignores the most significant bits of the given value if the hash type has less than 8 bytes.

impl Bloom

Utilities using the rand crate.

pub fn randomize_using<R: ?Sized>(&mut self, rng: &mut R) where
    R: Rng, 

Assign self to a cryptographically random value using the given random number generator.

pub fn randomize(&mut self)

Assign self to a cryptographically random value.

pub fn random_using<R: ?Sized>(rng: &mut R) -> Self where
    R: Rng, 

Create a new hash with cryptographically random content using the given random number generator.

pub fn random() -> Self

Create a new hash with cryptographically random content.

impl Bloom

pub fn is_empty(&self) -> bool

pub fn contains_input<'a>(&self, input: Input<'a>) -> bool

pub fn contains_bloom<'a, B>(&self, bloom: B) -> bool where
    BloomRef<'a>: From<B>, 

pub fn accrue<'a>(&mut self, input: Input<'a>)

pub fn accrue_bloom<'a, B>(&mut self, bloom: B) where
    BloomRef<'a>: From<B>, 

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

Trait Implementations

impl PartialEq<Bloom> for Bloom

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]

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

This method tests for !=.

impl<'a> PartialEq<BloomRef<'a>> for Bloom

fn eq(&self, other: &BloomRef<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]

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

This method tests for !=.

impl AsRef<[u8]> for Bloom

fn as_ref(&self) -> &[u8]

Performs the conversion.

impl From<[u8; 256]> for Bloom

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

Constructs a hash type from the given bytes array of fixed length.

Note

The given bytes are interpreted in big endian order.

impl<'a> From<&'a [u8; 256]> for Bloom

fn from(bytes: &'a [u8; 256]) -> Self

Constructs a hash type from the given reference to the bytes array of fixed length.

Note

The given bytes are interpreted in big endian order.

impl<'a> From<&'a mut [u8; 256]> for Bloom

fn from(bytes: &'a mut [u8; 256]) -> Self

Constructs a hash type from the given reference to the mutable bytes array of fixed length.

Note

The given bytes are interpreted in big endian order.

impl From<Bloom> for [u8; 256]

fn from(s: Bloom) -> Self

Performs the conversion.

impl<'a> From<Input<'a>> for Bloom

fn from(input: Input<'a>) -> Bloom

Performs the conversion.

impl<'a> From<&'a Bloom> for BloomRef<'a>

fn from(bloom: &'a Bloom) -> Self

Performs the conversion.

impl Clone for Bloom

fn clone(&self) -> Bloom

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for Bloom

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

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

Restrict a value to a certain interval.

impl Default for Bloom

fn default() -> Self

Returns the "default value" for a type.

impl Eq for Bloom

impl Copy for Bloom

impl PartialOrd<Bloom> for Bloom

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

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

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

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

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

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

impl AsMut<[u8]> for Bloom

fn as_mut(&mut self) -> &mut [u8]

Performs the conversion.

impl Debug for Bloom

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

Formats the value using the given formatter.

impl Display for Bloom

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

Formats the value using the given formatter.

impl FromStr for Bloom

type Err = FromHexError

The associated error which can be returned from parsing.

fn from_str(input: &str) -> Result<Bloom, FromHexError>

Creates a hash type instance from the given string.

Note

The given input string is interpreted in big endian.

Errors

• When encountering invalid non hex-digits
• Upon empty string input or invalid input length in general

impl<'l, 'r> BitAnd<&'r Bloom> for &'l Bloom

type Output = Bloom

The resulting type after applying the & operator.

fn bitand(self, rhs: &'r Bloom) -> Self::Output

Performs the & operation.

impl BitAnd<Bloom> for Bloom

type Output = Bloom

The resulting type after applying the & operator.

fn bitand(self, rhs: Self) -> Self::Output

Performs the & operation.

impl<'l, 'r> BitOr<&'r Bloom> for &'l Bloom

type Output = Bloom

The resulting type after applying the | operator.

fn bitor(self, rhs: &'r Bloom) -> Self::Output

Performs the | operation.

impl BitOr<Bloom> for Bloom

type Output = Bloom

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self::Output

Performs the | operation.

impl<'l, 'r> BitXor<&'r Bloom> for &'l Bloom

type Output = Bloom

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: &'r Bloom) -> Self::Output

Performs the ^ operation.

impl BitXor<Bloom> for Bloom

type Output = Bloom

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: Self) -> Self::Output

Performs the ^ operation.

impl<'r> BitAndAssign<&'r Bloom> for Bloom

fn bitand_assign(&mut self, rhs: &'r Bloom)

Performs the &= operation.

impl BitAndAssign<Bloom> for Bloom

fn bitand_assign(&mut self, rhs: Bloom)

Performs the &= operation.

impl<'r> BitOrAssign<&'r Bloom> for Bloom

fn bitor_assign(&mut self, rhs: &'r Bloom)

Performs the |= operation.

impl BitOrAssign<Bloom> for Bloom

fn bitor_assign(&mut self, rhs: Bloom)

Performs the |= operation.

impl<'r> BitXorAssign<&'r Bloom> for Bloom

fn bitxor_assign(&mut self, rhs: &'r Bloom)

Performs the ^= operation.

impl BitXorAssign<Bloom> for Bloom

fn bitxor_assign(&mut self, rhs: Bloom)

Performs the ^= operation.

impl<I> Index<I> for Bloom where
    I: SliceIndex<[u8]>, 

type Output = I::Output

The returned type after indexing.

fn index(&self, index: I) -> &I::Output

Performs the indexing (container[index]) operation.

impl<I> IndexMut<I> for Bloom where
    I: SliceIndex<[u8], Output = [u8]>, 

fn index_mut(&mut self, index: I) -> &mut I::Output

Performs the mutable indexing (container[index]) operation.

impl Hash for Bloom

fn hash<H>(&self, state: &mut H) where
    H: Hasher, 

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl LowerHex for Bloom

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

Formats the value using the given formatter.

impl UpperHex for Bloom

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

Formats the value using the given formatter.

impl Distribution<Bloom> for Standard

fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Bloom

Generate a random value of T, using rng as the source of randomness.

fn sample_iter<R>(&'a self, rng: &'a mut R) -> DistIter<'a, Self, R, T> where
    R: Rng, 

Create an iterator that generates random values of T, using rng as the source of randomness.

impl HeapSizeOf for Bloom

fn heap_size_of_children(&self) -> usize

Measure the size of any heap-allocated structures that hang off this value, but not the space taken up by the value itself (i.e. what size_of:: measures, more or less); that space is handled by the implementation of HeapSizeOf for Box below.

impl Serialize for Bloom

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

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for Bloom

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Decodable for Bloom

fn decode(rlp: &Rlp) -> Result<Self, DecoderError>

Decode a value from RLP bytes

impl Encodable for Bloom

fn rlp_append(&self, s: &mut RlpStream)

Append a value to the stream

fn rlp_bytes(&self) -> Vec<u8>

Get rlp-encoded bytes for this instance