Struct wasmtime_environ::packed_option::PackedOption

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pub struct PackedOption<T>(_)
 where
    T: ReservedValue;

Expand description

Packed representation of Option<T>.

Implementations

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impl<T> PackedOption<T> where
T: ReservedValue,

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pub fn is_none(&self) -> bool

Returns true if the packed option is a None value.

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pub fn is_some(&self) -> bool

Returns true if the packed option is a Some value.

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pub fn expand(self) -> Option<T>

Expand the packed option into a normal Option.

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pub fn map<U, F>(self, f: F) -> Option where
F: FnOnce(T) -> U,

Maps a PackedOption<T> to Option by applying a function to a contained value.

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pub fn unwrap(self) -> T

Unwrap a packed Some value or panic.

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pub fn expect(self, msg: &str) -> T

Unwrap a packed Some value or panic.

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pub fn take(&mut self) -> Option<T>

Takes the value out of the packed option, leaving a None in its place.

Trait Implementations

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impl<T> Clone for PackedOption<T> where
T: Clone + ReservedValue,

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

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl<T> Debug for PackedOption<T> where
T: ReservedValue + Debug,

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

Formats the value using the given formatter. Read more

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impl<T> Default for PackedOption<T> where
T: ReservedValue,

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fn default() -> PackedOption<T>

Create a default packed option representing None.

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impl<'de, T> Deserialize<'de> for PackedOption<T> where
T: ReservedValue + Deserialize<'de>,

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fn deserialize<D>(
deserializer: D
) -> Result<PackedOption<T>, <D as Deserializer<'de>>::Error> where
__D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

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impl<T> From<Option<T>> for PackedOption<T> where
T: ReservedValue,

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fn from(opt: Option<T>) -> PackedOption<T>

Convert an option into its packed equivalent.

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impl<T> From<T> for PackedOption<T> where
T: ReservedValue,

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fn from(t: T) -> PackedOption<T>

Convert t into a packed Some(x).

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impl<T> Hash for PackedOption<T> where
T: Hash + ReservedValue,

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

Feeds this value into the given Hasher. Read more

1.3.0 · source

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

Feeds a slice of this type into the given Hasher. Read more

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impl<T> Into<Option<T>> for PackedOption<T> where
T: ReservedValue,

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fn into(self) -> Option<T>

Performs the conversion.

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impl<T> Ord for PackedOption<T> where
T: Ord + ReservedValue,

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

This method returns an Ordering between self and other. Read more

1.21.0 · source

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

Compares and returns the maximum of two values. Read more

1.21.0 · source

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

Compares and returns the minimum of two values. Read more

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

Restrict a value to a certain interval. Read more

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impl<T> PartialEq<PackedOption<T>> for PackedOption<T> where
T: PartialEq<T> + ReservedValue,

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

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

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fn ne(&self, other: &PackedOption<T>) -> bool

This method tests for !=.

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impl<T> PartialOrd<PackedOption<T>> for PackedOption<T> where
T: PartialOrd<T> + ReservedValue,

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

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

1.0.0 · source

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

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

1.0.0 · source

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

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

1.0.0 · source

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

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

1.0.0 · source

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

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

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impl<T> Serialize for PackedOption<T> where
T: ReservedValue + Serialize,

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

Serialize this value into the given Serde serializer. Read more

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impl<T> StructuralPartialEq for PackedOption<T> where
T: ReservedValue,

Auto Trait Implementations

impl<T> RefUnwindSafe for PackedOption<T> where
T: RefUnwindSafe,

impl<T> Send for PackedOption<T> where
T: Send,

impl<T> Sync for PackedOption<T> where
T: Sync,

impl<T> Unpin for PackedOption<T> where
T: Unpin,

impl<T> UnwindSafe for PackedOption<T> where
T: 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,

const: unstable · source

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,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.

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impl<T> From<!> for T

const: unstable · source

fn from(t: !) -> T

Performs the conversion.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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,

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)

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

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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Struct wasmtime_environ::packed_option::PackedOption

Implementations

impl<T> PackedOption<T> where T: ReservedValue,

pub fn is_none(&self) -> bool

pub fn is_some(&self) -> bool

pub fn expand(self) -> Option<T>

pub fn map<U, F>(self, f: F) -> Option<U> where F: FnOnce(T) -> U,

pub fn unwrap(self) -> T

pub fn expect(self, msg: &str) -> T

pub fn take(&mut self) -> Option<T>

Trait Implementations

impl<T> Clone for PackedOption<T> where T: Clone + ReservedValue,

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

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

impl<T> Debug for PackedOption<T> where T: ReservedValue + Debug,

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

impl<T> Default for PackedOption<T> where T: ReservedValue,

fn default() -> PackedOption<T>

impl<'de, T> Deserialize<'de> for PackedOption<T> where T: ReservedValue + Deserialize<'de>,

fn deserialize<__D>( __deserializer: __D) -> Result<PackedOption<T>, <__D as Deserializer<'de>>::Error> where __D: Deserializer<'de>,

impl<T> From<Option<T>> for PackedOption<T> where T: ReservedValue,

fn from(opt: Option<T>) -> PackedOption<T>

impl<T> From<T> for PackedOption<T> where T: ReservedValue,

fn from(t: T) -> PackedOption<T>

impl<T> Hash for PackedOption<T> where T: Hash + ReservedValue,

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

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

impl<T> Into<Option<T>> for PackedOption<T> where T: ReservedValue,

fn into(self) -> Option<T>

impl<T> Ord for PackedOption<T> where T: Ord + ReservedValue,

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

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

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

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

impl<T> PartialEq<PackedOption<T>> for PackedOption<T> where T: PartialEq<T> + ReservedValue,

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

fn ne(&self, other: &PackedOption<T>) -> bool

impl<T> PartialOrd<PackedOption<T>> for PackedOption<T> where T: PartialOrd<T> + ReservedValue,

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

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

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

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

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

impl<T> Serialize for PackedOption<T> where T: ReservedValue + Serialize,

fn serialize<__S>( &self, __serializer: __S) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error> where __S: Serializer,

impl<T> Copy for PackedOption<T> where T: Copy + ReservedValue,

impl<T> Eq for PackedOption<T> where T: Eq + ReservedValue,

impl<T> StructuralEq for PackedOption<T> where T: ReservedValue,

impl<T> StructuralPartialEq for PackedOption<T> where T: ReservedValue,

Auto Trait Implementations

impl<T> RefUnwindSafe for PackedOption<T> where T: RefUnwindSafe,

impl<T> Send for PackedOption<T> where T: Send,

impl<T> Sync for PackedOption<T> where T: Sync,

impl<T> Unpin for PackedOption<T> where T: Unpin,

impl<T> UnwindSafe for PackedOption<T> where T: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<Q, K> Equivalent<K> for Q where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

fn equivalent(&self, key: &K) -> bool

impl<T> From<!> for T

fn from(t: !) -> T

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> PackedOption<T> where
T: ReservedValue,

pub fn map<U, F>(self, f: F) -> Option<U> where
F: FnOnce(T) -> U,

impl<T> Clone for PackedOption<T> where
T: Clone + ReservedValue,

impl<T> Debug for PackedOption<T> where
T: ReservedValue + Debug,

impl<T> Default for PackedOption<T> where
T: ReservedValue,

impl<'de, T> Deserialize<'de> for PackedOption<T> where
T: ReservedValue + Deserialize<'de>,

fn deserialize<D>(
deserializer: D
) -> Result<PackedOption<T>, <D as Deserializer<'de>>::Error> where
__D: Deserializer<'de>,

impl<T> From<Option<T>> for PackedOption<T> where
T: ReservedValue,

impl<T> From<T> for PackedOption<T> where
T: ReservedValue,

impl<T> Hash for PackedOption<T> where
T: Hash + ReservedValue,

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

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

impl<T> Into<Option<T>> for PackedOption<T> where
T: ReservedValue,

impl<T> Ord for PackedOption<T> where
T: Ord + ReservedValue,

impl<T> PartialEq<PackedOption<T>> for PackedOption<T> where
T: PartialEq<T> + ReservedValue,

impl<T> PartialOrd<PackedOption<T>> for PackedOption<T> where
T: PartialOrd<T> + ReservedValue,

impl<T> Serialize for PackedOption<T> where
T: ReservedValue + Serialize,

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

impl<T> Copy for PackedOption<T> where
T: Copy + ReservedValue,

impl<T> Eq for PackedOption<T> where
T: Eq + ReservedValue,

impl<T> StructuralEq for PackedOption<T> where
T: ReservedValue,

impl<T> StructuralPartialEq for PackedOption<T> where
T: ReservedValue,

impl<T> RefUnwindSafe for PackedOption<T> where
T: RefUnwindSafe,

impl<T> Send for PackedOption<T> where
T: Send,

impl<T> Sync for PackedOption<T> where
T: Sync,

impl<T> Unpin for PackedOption<T> where
T: Unpin,

impl<T> UnwindSafe for PackedOption<T> where
T: UnwindSafe,

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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

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

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<T> DeserializeOwned for T where
T: for<'de> Deserialize<'de>,