Struct zerocopy::byteorder::U128

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#[repr(transparent)]
pub struct U128<O>([u8; 16], PhantomData<O>);
Expand description

A 128-bit unsigned integer stored in a given byte order.

U128 is like the native u128 type with two major differences: First, it has no alignment requirement (its alignment is 1). Second, the endianness of its memory layout is given by the type parameter O, which can be any type which implements ByteOrder. In particular, this refers to BigEndian, LittleEndian, NativeEndian, and NetworkEndian.

A U128 can be constructed using the new method, and its contained value can be obtained as a native u128 using the get method, or updated in place with the set method. In all cases, if the endianness O is not the same as the endianness of the current platform, an endianness swap will be performed in order to uphold the invariants that a) the layout of U128 has endianness O and that, b) the layout of u128 has the platform’s native endianness.

U128 implements FromBytes, AsBytes, and Unaligned, making it useful for parsing and serialization. See the module documentation for an example of how it can be used for parsing UDP packets.

Tuple Fields§

§0: [u8; 16]§1: PhantomData<O>

Implementations§

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impl<O> U128<O>

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pub const ZERO: U128<O> = _

The value zero.

This constant should be preferred to constructing a new value using new, as new may perform an endianness swap depending on the endianness and platform.

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pub const MAX_VALUE: U128<O> = _

The maximum value.

This constant should be preferred to constructing a new value using new, as new may perform an endianness swap depending on the endianness O and the endianness of the platform.

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pub const fn from_bytes(bytes: [u8; 16]) -> U128<O>

Constructs a new value from bytes which are already in the endianness O.

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impl<O: ByteOrder> U128<O>

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pub fn new(n: u128) -> U128<O>

Constructs a new value, possibly performing an endianness swap to guarantee that the returned value has endianness O.

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pub fn get(self) -> u128

Returns the value as a primitive type, possibly performing an endianness swap to guarantee that the return value has the endianness of the native platform.

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pub fn set(&mut self, n: u128)

Updates the value in place as a primitive type, possibly performing an endianness swap to guarantee that the stored value has the endianness O.

Trait Implementations§

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impl<O: ByteOrder> Add for U128<O>

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type Output = U128<O>

The resulting type after applying the + operator.
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fn add(self, rhs: U128<O>) -> U128<O>

Performs the + operation. Read more
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impl<O: ByteOrder> AddAssign for U128<O>

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fn add_assign(&mut self, rhs: U128<O>)

Performs the += operation. Read more
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impl<O> AsBytes for U128<O>
where [u8; 16]: AsBytes, PhantomData<O>: AsBytes,

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

Gets the bytes of this value. Read more
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fn as_bytes_mut(&mut self) -> &mut [u8]
where Self: FromBytes,

Gets the bytes of this value mutably. Read more
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fn write_to(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to bytes. Read more
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fn write_to_prefix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the prefix of bytes. Read more
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fn write_to_suffix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the suffix of bytes. Read more
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impl<O: ByteOrder> AsMut<[u8; 16]> for U128<O>

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fn as_mut(&mut self) -> &mut [u8; 16]

Converts this type into a mutable reference of the (usually inferred) input type.
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impl<O: ByteOrder> AsRef<[u8; 16]> for U128<O>

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fn as_ref(&self) -> &[u8; 16]

Converts this type into a shared reference of the (usually inferred) input type.
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impl<O: ByteOrder> Binary for U128<O>

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

Formats the value using the given formatter. Read more
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impl<O: ByteOrder> BitAnd for U128<O>

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type Output = U128<O>

The resulting type after applying the & operator.
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fn bitand(self, rhs: U128<O>) -> U128<O>

Performs the & operation. Read more
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impl<O: ByteOrder> BitAndAssign for U128<O>

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fn bitand_assign(&mut self, rhs: U128<O>)

Performs the &= operation. Read more
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impl<O: ByteOrder> BitOr for U128<O>

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type Output = U128<O>

The resulting type after applying the | operator.
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fn bitor(self, rhs: U128<O>) -> U128<O>

Performs the | operation. Read more
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impl<O: ByteOrder> BitOrAssign for U128<O>

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fn bitor_assign(&mut self, rhs: U128<O>)

Performs the |= operation. Read more
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impl<O: ByteOrder> BitXor for U128<O>

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type Output = U128<O>

The resulting type after applying the ^ operator.
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fn bitxor(self, rhs: U128<O>) -> U128<O>

Performs the ^ operation. Read more
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impl<O: ByteOrder> BitXorAssign for U128<O>

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fn bitxor_assign(&mut self, rhs: U128<O>)

Performs the ^= operation. Read more
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impl<O: Clone> Clone for U128<O>

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fn clone(&self) -> U128<O>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<O: ByteOrder> Debug for U128<O>

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

Formats the value using the given formatter. Read more
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impl<O> Default for U128<O>

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fn default() -> U128<O>

Returns the “default value” for a type. Read more
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impl<O: ByteOrder> Display for U128<O>

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

Formats the value using the given formatter. Read more
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impl<O: ByteOrder> Div for U128<O>

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type Output = U128<O>

The resulting type after applying the / operator.
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fn div(self, rhs: U128<O>) -> U128<O>

Performs the / operation. Read more
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impl<O: ByteOrder> DivAssign for U128<O>

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fn div_assign(&mut self, rhs: U128<O>)

Performs the /= operation. Read more
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impl<O: ByteOrder> From<[u8; 16]> for U128<O>

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fn from(bytes: [u8; 16]) -> U128<O>

Converts to this type from the input type.
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impl<O: ByteOrder> From<U128<O>> for [u8; 16]

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fn from(x: U128<O>) -> [u8; 16]

Converts to this type from the input type.
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impl<O: ByteOrder> From<U128<O>> for u128

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fn from(x: U128<O>) -> u128

Converts to this type from the input type.
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impl<O: ByteOrder, P: ByteOrder> From<U16<O>> for U128<P>

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fn from(x: U16<O>) -> U128<P>

Converts to this type from the input type.
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impl<O: ByteOrder, P: ByteOrder> From<U32<O>> for U128<P>

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fn from(x: U32<O>) -> U128<P>

Converts to this type from the input type.
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impl<O: ByteOrder, P: ByteOrder> From<U64<O>> for U128<P>

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fn from(x: U64<O>) -> U128<P>

Converts to this type from the input type.
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impl<O: ByteOrder> From<u128> for U128<O>

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fn from(x: u128) -> U128<O>

Converts to this type from the input type.
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impl<O> FromBytes for U128<O>

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fn ref_from(bytes: &[u8]) -> Option<&Self>
where Self: Sized,

Interprets the given bytes as a &Self without copying. Read more
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fn ref_from_prefix(bytes: &[u8]) -> Option<&Self>
where Self: Sized,

Interprets the prefix of the given bytes as a &Self without copying. Read more
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fn ref_from_suffix(bytes: &[u8]) -> Option<&Self>
where Self: Sized,

Interprets the suffix of the given bytes as a &Self without copying. Read more
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fn mut_from(bytes: &mut [u8]) -> Option<&mut Self>
where Self: Sized + AsBytes,

Interprets the given bytes as a &mut Self without copying. Read more
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fn mut_from_prefix(bytes: &mut [u8]) -> Option<&mut Self>
where Self: Sized + AsBytes,

Interprets the prefix of the given bytes as a &mut Self without copying. Read more
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fn mut_from_suffix(bytes: &mut [u8]) -> Option<&mut Self>
where Self: Sized + AsBytes,

Interprets the suffix of the given bytes as a &mut Self without copying. Read more
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fn slice_from(bytes: &[u8]) -> Option<&[Self]>
where Self: Sized,

Interprets the given bytes as a &[Self] without copying. Read more
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fn slice_from_prefix(bytes: &[u8], count: usize) -> Option<(&[Self], &[u8])>
where Self: Sized,

Interprets the prefix of the given bytes as a &[Self] with length equal to count without copying. Read more
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fn slice_from_suffix(bytes: &[u8], count: usize) -> Option<(&[u8], &[Self])>
where Self: Sized,

Interprets the suffix of the given bytes as a &[Self] with length equal to count without copying. Read more
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fn mut_slice_from(bytes: &mut [u8]) -> Option<&mut [Self]>
where Self: Sized + AsBytes,

Interprets the given bytes as a &mut [Self] without copying. Read more
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fn mut_slice_from_prefix( bytes: &mut [u8], count: usize, ) -> Option<(&mut [Self], &mut [u8])>
where Self: Sized + AsBytes,

Interprets the prefix of the given bytes as a &mut [Self] with length equal to count without copying. Read more
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fn mut_slice_from_suffix( bytes: &mut [u8], count: usize, ) -> Option<(&mut [u8], &mut [Self])>
where Self: Sized + AsBytes,

Interprets the suffix of the given bytes as a &mut [Self] with length equal to count without copying. Read more
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fn read_from(bytes: &[u8]) -> Option<Self>
where Self: Sized,

Reads a copy of Self from bytes. Read more
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fn read_from_prefix(bytes: &[u8]) -> Option<Self>
where Self: Sized,

Reads a copy of Self from the prefix of bytes. Read more
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fn read_from_suffix(bytes: &[u8]) -> Option<Self>
where Self: Sized,

Reads a copy of Self from the suffix of bytes. Read more
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impl<O> FromZeroes for U128<O>

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fn zero(&mut self)

Overwrites self with zeroes. Read more
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fn new_zeroed() -> Self
where Self: Sized,

Creates an instance of Self from zeroed bytes. Read more
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impl<O: Hash> Hash for U128<O>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<O: ByteOrder> LowerHex for U128<O>

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

Formats the value using the given formatter. Read more
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impl<O: ByteOrder> Mul for U128<O>

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type Output = U128<O>

The resulting type after applying the * operator.
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fn mul(self, rhs: U128<O>) -> U128<O>

Performs the * operation. Read more
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impl<O: ByteOrder> MulAssign for U128<O>

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fn mul_assign(&mut self, rhs: U128<O>)

Performs the *= operation. Read more
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impl<O> Not for U128<O>

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type Output = U128<O>

The resulting type after applying the ! operator.
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fn not(self) -> U128<O>

Performs the unary ! operation. Read more
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impl<O: ByteOrder> Octal for U128<O>

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

Formats the value using the given formatter. Read more
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impl<O: ByteOrder> PartialEq<[u8; 16]> for U128<O>

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fn eq(&self, other: &[u8; 16]) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<O: ByteOrder> PartialEq<U128<O>> for [u8; 16]

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fn eq(&self, other: &U128<O>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<O: PartialEq> PartialEq for U128<O>

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fn eq(&self, other: &U128<O>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<O: ByteOrder> Rem for U128<O>

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type Output = U128<O>

The resulting type after applying the % operator.
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fn rem(self, rhs: U128<O>) -> U128<O>

Performs the % operation. Read more
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impl<O: ByteOrder> RemAssign for U128<O>

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fn rem_assign(&mut self, rhs: U128<O>)

Performs the %= operation. Read more
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impl<O: ByteOrder> Shl for U128<O>

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type Output = U128<O>

The resulting type after applying the << operator.
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fn shl(self, rhs: U128<O>) -> U128<O>

Performs the << operation. Read more
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impl<O: ByteOrder> ShlAssign for U128<O>

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fn shl_assign(&mut self, rhs: U128<O>)

Performs the <<= operation. Read more
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impl<O: ByteOrder> Shr for U128<O>

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type Output = U128<O>

The resulting type after applying the >> operator.
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fn shr(self, rhs: U128<O>) -> U128<O>

Performs the >> operation. Read more
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impl<O: ByteOrder> ShrAssign for U128<O>

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fn shr_assign(&mut self, rhs: U128<O>)

Performs the >>= operation. Read more
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impl<O: ByteOrder> Sub for U128<O>

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type Output = U128<O>

The resulting type after applying the - operator.
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fn sub(self, rhs: U128<O>) -> U128<O>

Performs the - operation. Read more
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impl<O: ByteOrder> SubAssign for U128<O>

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fn sub_assign(&mut self, rhs: U128<O>)

Performs the -= operation. Read more
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impl<O: ByteOrder, P: ByteOrder> TryFrom<U128<P>> for U16<O>

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type Error = TryFromIntError

The type returned in the event of a conversion error.
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fn try_from(x: U128<P>) -> Result<U16<O>, TryFromIntError>

Performs the conversion.
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impl<O: ByteOrder, P: ByteOrder> TryFrom<U128<P>> for U32<O>

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type Error = TryFromIntError

The type returned in the event of a conversion error.
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fn try_from(x: U128<P>) -> Result<U32<O>, TryFromIntError>

Performs the conversion.
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impl<O: ByteOrder, P: ByteOrder> TryFrom<U128<P>> for U64<O>

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type Error = TryFromIntError

The type returned in the event of a conversion error.
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fn try_from(x: U128<P>) -> Result<U64<O>, TryFromIntError>

Performs the conversion.
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impl<O: ByteOrder> UpperHex for U128<O>

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

Formats the value using the given formatter. Read more
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impl<O: Copy> Copy for U128<O>

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impl<O: Eq> Eq for U128<O>

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impl<O> StructuralPartialEq for U128<O>

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impl<O> Unaligned for U128<O>

Auto Trait Implementations§

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impl<O> Freeze for U128<O>

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impl<O> RefUnwindSafe for U128<O>
where O: RefUnwindSafe,

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impl<O> Send for U128<O>
where O: Send,

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impl<O> Sync for U128<O>
where O: Sync,

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impl<O> Unpin for U128<O>
where O: Unpin,

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impl<O> UnwindSafe for U128<O>
where O: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.