[−][src]Struct protocol::logic::Aligned
A value that is aligned to a specified number of bytes.
When bytes are written, they are zero-padding at the end
until the total size is the smallest multiple of the
size of ToSizeOfType
.
When an Aligned
type is read, a value of the inner T
is first read, and then the minimum number of zero bytes in
order to maintain alignment are read and ignored.
Type parameters:
T
- TheParcel
type that is to be transmittedToSizeOfType
The transmitted bytes will be aligned to a multiple ofsize_of::<ToSizeOfType>()
. For example, ifToSizeOfType = u32
, then the written bytes will be aligned to a multiple of 4 bytes.
Examples:
extern crate protocol; #[macro_use] extern crate protocol_derive; use protocol::Parcel; /// An example packet with a length prefix disjoint /// from its data, with the data also #[derive(Protocol, Clone, Debug, PartialEq)] struct Packet { /// The length of the 'reason' string. pub reason_length: u8, /// The version number of the protocol. pub version_number: (u32, u32), #[protocol(length_prefix(bytes(reason_length)))] pub reason: protocol::logic::Aligned<String, u64>, } let raw_bytes = Packet { reason_length: 12, version_number: (11, 0xdeadbeef), reason: "hello world!".to_owned().into(), }.raw_bytes(&protocol::Settings::default()).unwrap(); assert_eq!(&[ 12, // reason length 0, 0, 0, 11, 0xde, 0xad, 0xbe, 0xef, // version number // the string "hello world". b'h', b'e', b'l', b'l', b'o', b' ', b'w', b'o', b'r', b'l', b'd', b'!', 0x00, 0x00, 0x00, 0x00, // padding bytes to align to string to 16 bytes. ], &raw_bytes[..]);
Fields
value: T
The inner value.
Methods
impl<T, ToSizeOfType> Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
pub fn new(value: T) -> Self
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Creates a new aligned value.
pub fn align_to_bytes() -> usize
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Gets the number of bytes of the alignment.
Trait Implementations
impl<T, ToSizeOfType> Parcel for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
const TYPE_NAME: &'static str
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fn read_field(
read: &mut dyn Read,
settings: &Settings,
hints: &mut Hints
) -> Result<Self, Error>
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read: &mut dyn Read,
settings: &Settings,
hints: &mut Hints
) -> Result<Self, Error>
fn write_field(
&self,
write: &mut dyn Write,
settings: &Settings,
hints: &mut Hints
) -> Result<(), Error>
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&self,
write: &mut dyn Write,
settings: &Settings,
hints: &mut Hints
) -> Result<(), Error>
fn read(read: &mut dyn Read, settings: &Settings) -> Result<Self, Error>
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Reads a new item with a fresh set of hints. Read more
fn write(&self, write: &mut dyn Write, settings: &Settings) -> Result<(), Error>
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Writes a value to a stream.
fn into_stream(self, settings: &Settings) -> Result<Cursor<Vec<u8>>, Error>
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Convers the value into a byte stream that implements std::io::Read
.
fn from_raw_bytes(bytes: &[u8], settings: &Settings) -> Result<Self, Error>
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Parses a new value from its raw byte representation. Read more
fn field_from_raw_bytes(
bytes: &[u8],
settings: &Settings,
hints: &mut Hints
) -> Result<Self, Error>
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bytes: &[u8],
settings: &Settings,
hints: &mut Hints
) -> Result<Self, Error>
Parses a new value from its raw byte representation. Read more
fn raw_bytes(&self, settings: &Settings) -> Result<Vec<u8>, Error>
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Gets the raw byte representation of the value.
fn raw_bytes_field(
&self,
settings: &Settings,
hints: &mut Hints
) -> Result<Vec<u8>, Error>
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&self,
settings: &Settings,
hints: &mut Hints
) -> Result<Vec<u8>, Error>
Gets the raw bytes of this type as a field of a larger type.
fn type_name(&self) -> &'static str
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Gets the name of the type; Parcel::TYPE_NAME
.
impl<T: Clone, ToSizeOfType: Clone> Clone for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
fn clone(&self) -> Aligned<T, ToSizeOfType>
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fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl<T: Ord, ToSizeOfType: Ord> Ord for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
fn cmp(&self, other: &Aligned<T, ToSizeOfType>) -> Ordering
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fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
fn clamp(self, min: Self, max: Self) -> Self
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clamp
)Restrict a value to a certain interval. Read more
impl<T, ToSizeOfType> From<T> for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
impl<T: Eq, ToSizeOfType: Eq> Eq for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
impl<T: Copy, ToSizeOfType: Copy> Copy for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
impl<T: PartialOrd, ToSizeOfType: PartialOrd> PartialOrd<Aligned<T, ToSizeOfType>> for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
fn partial_cmp(&self, other: &Aligned<T, ToSizeOfType>) -> Option<Ordering>
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fn lt(&self, other: &Aligned<T, ToSizeOfType>) -> bool
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fn le(&self, other: &Aligned<T, ToSizeOfType>) -> bool
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fn gt(&self, other: &Aligned<T, ToSizeOfType>) -> bool
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fn ge(&self, other: &Aligned<T, ToSizeOfType>) -> bool
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impl<T: PartialEq, ToSizeOfType: PartialEq> PartialEq<Aligned<T, ToSizeOfType>> for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
fn eq(&self, other: &Aligned<T, ToSizeOfType>) -> bool
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fn ne(&self, other: &Aligned<T, ToSizeOfType>) -> bool
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impl<T: Debug, ToSizeOfType: Debug> Debug for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
impl<T: Hash, ToSizeOfType: Hash> Hash for Aligned<T, ToSizeOfType> where
T: Parcel,
ToSizeOfType: Sized,
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T: Parcel,
ToSizeOfType: Sized,
Auto Trait Implementations
impl<T, ToSizeOfType> Send for Aligned<T, ToSizeOfType> where
T: Send,
ToSizeOfType: Send,
T: Send,
ToSizeOfType: Send,
impl<T, ToSizeOfType> Sync for Aligned<T, ToSizeOfType> where
T: Sync,
ToSizeOfType: Sync,
T: Sync,
ToSizeOfType: Sync,
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,