Struct Skippable 

pub struct Skippable<T> { /* private fields */ }

A wrapper for a type T which might not always be present in the TLV stream.

Unlike Option<T> and Optional<T> though, Skippable<T> is NOT initialized to None when the value is not present in the TLV stream, but to a default T.

Implementations

impl<T> Skippable<T>

pub const fn new(value: T) -> Skippable<T>

Create a new Skippable with the given value.

pub fn init<I, E>(value: I) -> impl Init<Skippable<T>, E>

where I: Init<T, E>,

Initialize a Skippable with the given initializer.

pub const fn value(&self) -> &T

pub const fn value_mut(&mut self) -> &mut T

impl<T> Skippable<T>

where T: Default + InitDefault,

pub fn new_default() -> Skippable<T>

Create a new Skippable with the default value of T.

pub fn init_default() -> impl Init<Skippable<T>>

Initialize a Skippable with the default value of T.

Trait Implementations

impl<T> Clone for Skippable<T>

where T: Clone,

fn clone(&self) -> Skippable<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for Skippable<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<T> Default for Skippable<T>

where T: Default,

fn default() -> Skippable<T>

Returns the “default value” for a type.

impl<T> Deref for Skippable<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &<Skippable<T> as Deref>::Target

Dereferences the value.

impl<T> DerefMut for Skippable<T>

fn deref_mut(&mut self) -> &mut <Skippable<T> as Deref>::Target

Mutably dereferences the value.

impl<T> Eq for Skippable<T>

where T: Eq,

impl<'a, T> FromTLV<'a> for Skippable<T>

where T: FromTLV<'a> + Default + InitDefault,

fn from_tlv(element: &TLVElement<'a>) -> Result<Skippable<T>, Error>

Deserialize the type from a TLV-encoded element.

fn init_from_tlv(element: TLVElement<'a>) -> impl Init<Skippable<T>, Error>

Generate an in-place initializer for the type that initializes the type from a TLV-encoded element.

fn nullable_from_tlv(element: &TLVElement<'a>) -> Result<Self, Error>

Deserialize the type from a TLV-encoded element.

fn init_nullable_from_tlv(element: TLVElement<'a>) -> impl Init<Self, Error>

Generate an in-place initializer for the type that initializes the type from a TLV-encoded element.

impl<T> Hash for Skippable<T>

where T: Hash,

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T> InitDefault for Skippable<T>

where T: InitDefault,

fn init_default() -> impl Init<Skippable<T>>

Returns a canonical in-place initializer for Self.

impl<T> Ord for Skippable<T>

where T: Ord,

fn cmp(&self, other: &Skippable<T>) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

impl<T> PartialEq for Skippable<T>

where T: PartialEq,

fn eq(&self, other: &Skippable<T>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<T> PartialOrd for Skippable<T>

where T: PartialOrd,

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl<T> StructuralPartialEq for Skippable<T>

where T: PartialEq,

impl<T> ToTLV for Skippable<T>

where T: ToTLV,

fn to_tlv<W>(&self, tag: &TLVTag, tw: W) -> Result<(), Error>

where W: TLVWrite,

Serialize the type to a TLV-encoded stream.

fn tlv_iter(&self, tag: TLVTag) -> impl Iterator<Item = Result<TLV<'_>, Error>>

Serialize the type as an iterator of TLV instances by potentially borrowing data from the type.

fn nullable_to_tlv<W>(&self, tag: &TLVTag, tw: W) -> Result<(), Error>

where W: TLVWrite,

Serialize the type to a TLV-encoded stream.

fn nullable_tlv_iter( &self, tag: TLVTag, ) -> impl Iterator<Item = Result<TLV<'_>, Error>>

Serialize the type as an iterator of TLV instances by potentially borrowing data from the type.