Struct I32

pub struct I32<O>(/* private fields */);

A 32-bit signed integer stored in a given byte order.

I32 is like the native i32 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.

An I32 can be constructed using the new method, and its contained value can be obtained as a native i32 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 I32 has endianness O and that, b) the layout of i32 has the platform’s native endianness.

I32 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.

Implementations

impl<O> I32<O>

pub const ZERO: I32<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.

pub const fn from_bytes(bytes: [u8; 4]) -> I32<O>

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

impl<O: ByteOrder> I32<O>

pub fn new(n: i32) -> I32<O>

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

pub fn get(self) -> i32

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.

pub fn set(&mut self, n: i32)

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

impl<O: ByteOrder> Add for I32<O>

type Output = I32<O>

The resulting type after applying the + operator.

fn add(self, rhs: I32<O>) -> I32<O>

Performs the + operation.

impl<O: ByteOrder> AddAssign for I32<O>

fn add_assign(&mut self, rhs: I32<O>)

Performs the += operation.

impl<O> AsBytes for I32<O>

where [u8; 4]: AsBytes, PhantomData<O>: AsBytes,

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

Gets the bytes of this value.

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

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to bytes.

fn write_to_prefix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the prefix of bytes.

fn write_to_suffix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the suffix of bytes.

impl<O: ByteOrder> AsMut<[u8; 4]> for I32<O>

fn as_mut(&mut self) -> &mut [u8; 4]

Converts this type into a mutable reference of the (usually inferred) input type.

impl<O: ByteOrder> AsRef<[u8; 4]> for I32<O>

fn as_ref(&self) -> &[u8; 4]

Converts this type into a shared reference of the (usually inferred) input type.

impl<O: ByteOrder> Binary for I32<O>

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

Formats the value using the given formatter.

impl<O: ByteOrder> BitAnd for I32<O>

type Output = I32<O>

The resulting type after applying the & operator.

fn bitand(self, rhs: I32<O>) -> I32<O>

Performs the & operation.

impl<O: ByteOrder> BitAndAssign for I32<O>

fn bitand_assign(&mut self, rhs: I32<O>)

Performs the &= operation.

impl<O: ByteOrder> BitOr for I32<O>

type Output = I32<O>

The resulting type after applying the | operator.

fn bitor(self, rhs: I32<O>) -> I32<O>

Performs the | operation.

impl<O: ByteOrder> BitOrAssign for I32<O>

fn bitor_assign(&mut self, rhs: I32<O>)

Performs the |= operation.

impl<O: ByteOrder> BitXor for I32<O>

type Output = I32<O>

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: I32<O>) -> I32<O>

Performs the ^ operation.

impl<O: ByteOrder> BitXorAssign for I32<O>

fn bitxor_assign(&mut self, rhs: I32<O>)

Performs the ^= operation.

impl<O: Clone> Clone for I32<O>

fn clone(&self) -> I32<O>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<O: ByteOrder> Debug for I32<O>

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

Formats the value using the given formatter.

impl<O> Default for I32<O>

fn default() -> I32<O>

Returns the “default value” for a type.

impl<O: ByteOrder> Display for I32<O>

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

Formats the value using the given formatter.

impl<O: ByteOrder> Div for I32<O>

type Output = I32<O>

The resulting type after applying the / operator.

fn div(self, rhs: I32<O>) -> I32<O>

Performs the / operation.

impl<O: ByteOrder> DivAssign for I32<O>

fn div_assign(&mut self, rhs: I32<O>)

Performs the /= operation.

impl<O: ByteOrder> From<[u8; 4]> for I32<O>

fn from(bytes: [u8; 4]) -> I32<O>

Converts to this type from the input type.

impl<O: ByteOrder, P: ByteOrder> From<I16<O>> for I32<P>

fn from(x: I16<O>) -> I32<P>

Converts to this type from the input type.

impl<O: ByteOrder> From<I32<O>> for [u8; 4]

fn from(x: I32<O>) -> [u8; 4]

Converts to this type from the input type.

impl<O: ByteOrder, P: ByteOrder> From<I32<O>> for I128<P>

fn from(x: I32<O>) -> I128<P>

Converts to this type from the input type.

impl<O: ByteOrder, P: ByteOrder> From<I32<O>> for I64<P>

fn from(x: I32<O>) -> I64<P>

Converts to this type from the input type.

impl<O: ByteOrder> From<I32<O>> for i128

fn from(x: I32<O>) -> i128

Converts to this type from the input type.

impl<O: ByteOrder> From<I32<O>> for i32

fn from(x: I32<O>) -> i32

Converts to this type from the input type.

impl<O: ByteOrder> From<I32<O>> for i64

fn from(x: I32<O>) -> i64

Converts to this type from the input type.

impl<O: ByteOrder> From<i32> for I32<O>

fn from(x: i32) -> I32<O>

Converts to this type from the input type.

impl<O> FromBytes for I32<O>

where [u8; 4]: FromBytes, PhantomData<O>: FromBytes,

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

where Self: Sized,

Interprets the given bytes as a &Self without copying.

fn ref_from_prefix(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the prefix of the given bytes as a &Self without copying.

fn ref_from_suffix(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the suffix of the given bytes as a &Self without copying.

fn mut_from(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the given bytes as a &mut Self without copying.

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.

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.

fn slice_from(bytes: &[u8]) -> Option<&[Self]>

where Self: Sized,

Interprets the given bytes as a &[Self] without copying.

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.

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.

fn mut_slice_from(bytes: &mut [u8]) -> Option<&mut [Self]>

where Self: Sized + AsBytes,

Interprets the given bytes as a &mut [Self] without copying.

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.

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.

fn read_from(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from bytes.

fn read_from_prefix(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from the prefix of bytes.

fn read_from_suffix(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from the suffix of bytes.

impl<O> FromZeroes for I32<O>

where [u8; 4]: FromZeroes, PhantomData<O>: FromZeroes,

fn zero(&mut self)

Overwrites self with zeroes.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl<O: Hash> Hash for I32<O>

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<O: ByteOrder> LowerHex for I32<O>

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

Formats the value using the given formatter.

impl<O: ByteOrder> Mul for I32<O>

type Output = I32<O>

The resulting type after applying the * operator.

fn mul(self, rhs: I32<O>) -> I32<O>

Performs the * operation.

impl<O: ByteOrder> MulAssign for I32<O>

fn mul_assign(&mut self, rhs: I32<O>)

Performs the *= operation.

impl<O: ByteOrder> Neg for I32<O>

type Output = I32<O>

The resulting type after applying the - operator.

fn neg(self) -> I32<O>

Performs the unary - operation.

impl<O> Not for I32<O>

type Output = I32<O>

The resulting type after applying the ! operator.

fn not(self) -> I32<O>

Performs the unary ! operation.

impl<O: ByteOrder> Octal for I32<O>

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

Formats the value using the given formatter.

impl<O: ByteOrder> PartialEq<[u8; 4]> for I32<O>

fn eq(&self, other: &[u8; 4]) -> 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<O: ByteOrder> PartialEq<I32<O>> for [u8; 4]

fn eq(&self, other: &I32<O>) -> 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<O: PartialEq> PartialEq for I32<O>

fn eq(&self, other: &I32<O>) -> 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<O: ByteOrder> Rem for I32<O>

type Output = I32<O>

The resulting type after applying the % operator.

fn rem(self, rhs: I32<O>) -> I32<O>

Performs the % operation.

impl<O: ByteOrder> RemAssign for I32<O>

fn rem_assign(&mut self, rhs: I32<O>)

Performs the %= operation.

impl<O: ByteOrder> Shl for I32<O>

type Output = I32<O>

The resulting type after applying the << operator.

fn shl(self, rhs: I32<O>) -> I32<O>

Performs the << operation.

impl<O: ByteOrder> ShlAssign for I32<O>

fn shl_assign(&mut self, rhs: I32<O>)

Performs the <<= operation.

impl<O: ByteOrder> Shr for I32<O>

type Output = I32<O>

The resulting type after applying the >> operator.

fn shr(self, rhs: I32<O>) -> I32<O>

Performs the >> operation.

impl<O: ByteOrder> ShrAssign for I32<O>

fn shr_assign(&mut self, rhs: I32<O>)

Performs the >>= operation.

impl<O: ByteOrder> Sub for I32<O>

type Output = I32<O>

The resulting type after applying the - operator.

fn sub(self, rhs: I32<O>) -> I32<O>

Performs the - operation.

impl<O: ByteOrder> SubAssign for I32<O>

fn sub_assign(&mut self, rhs: I32<O>)

Performs the -= operation.

impl<O: ByteOrder, P: ByteOrder> TryFrom<I128<P>> for I32<O>

type Error = TryFromIntError

The type returned in the event of a conversion error.

fn try_from(x: I128<P>) -> Result<I32<O>, TryFromIntError>

Performs the conversion.

impl<O: ByteOrder, P: ByteOrder> TryFrom<I32<P>> for I16<O>

type Error = TryFromIntError

The type returned in the event of a conversion error.

fn try_from(x: I32<P>) -> Result<I16<O>, TryFromIntError>

Performs the conversion.

impl<O: ByteOrder, P: ByteOrder> TryFrom<I64<P>> for I32<O>

type Error = TryFromIntError

The type returned in the event of a conversion error.

fn try_from(x: I64<P>) -> Result<I32<O>, TryFromIntError>

Performs the conversion.

impl<O: ByteOrder> TryFrom<i128> for I32<O>

type Error = TryFromIntError

The type returned in the event of a conversion error.

fn try_from(x: i128) -> Result<I32<O>, TryFromIntError>

Performs the conversion.

impl<O: ByteOrder> TryFrom<i64> for I32<O>

type Error = TryFromIntError

The type returned in the event of a conversion error.

fn try_from(x: i64) -> Result<I32<O>, TryFromIntError>

Performs the conversion.

impl<O: ByteOrder> UpperHex for I32<O>

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

Formats the value using the given formatter.

impl<O: Copy> Copy for I32<O>

impl<O: Eq> Eq for I32<O>

impl<O> StructuralPartialEq for I32<O>

impl<O> Unaligned for I32<O>

where [u8; 4]: Unaligned, PhantomData<O>: Unaligned,