Enum sp_wasm_interface::ReturnValue

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pub enum ReturnValue {
    Unit,
    Value(Value),
}

Expand description

Typed value that can be returned from a function.

Basically a TypedValue plus Unit, for functions which return nothing.

Variants

`Unit`

For returning nothing.

`Value(Value)`

For returning some concrete value.

Implementations

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impl ReturnValue

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pub const ENCODED_MAX_SIZE: usize

Maximum number of bytes ReturnValue might occupy when serialized with SCALE.

Breakdown: 1 byte for encoding unit/value variant 1 byte for encoding value type 8 bytes for encoding the biggest value types available in wasm: f64, i64.

Trait Implementations

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impl Clone for ReturnValue

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fn clone(&self) -> ReturnValue

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 Debug for ReturnValue

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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 Decode for ReturnValue

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fn decode<CodecInputEdqy: Input>(
codec_input_edqy: &mut __CodecInputEdqy
) -> Result<Self, Error>

Attempt to deserialise the value from input.

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fn skip(input: &mut I) -> Result<(), Error> where
I: Input,

Attempt to skip the encoded value from input. Read more

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fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type. Read more

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impl Encode for ReturnValue

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fn encode_to<CodecOutputEdqy: Output + ?Sized>(
&self,
codec_dest_edqy: &mut __CodecOutputEdqy
)

Convert self to a slice and append it to the destination.

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fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding. Read more

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fn encode(&self) -> Vec<u8, Global>

Convert self to an owned vector.

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fn using_encoded<R, F>(&self, f: F) -> R where
F: FnOnce(&[u8 ]) -> R,

Convert self to a slice and then invoke the given closure with it.

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fn encoded_size(&self) -> usize

Calculates the encoded size. Read more

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impl From<Value> for ReturnValue

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fn from(v: Value) -> ReturnValue

Performs the conversion.

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impl PartialEq<ReturnValue> for ReturnValue

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fn eq(&self, other: &ReturnValue) -> 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: &ReturnValue) -> bool

This method tests for !=.

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impl Copy for ReturnValue

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impl EncodeLike<ReturnValue> for ReturnValue

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impl StructuralPartialEq for ReturnValue

Auto Trait Implementations

impl RefUnwindSafe for ReturnValue

impl Send for ReturnValue

impl Sync for ReturnValue

impl Unpin for ReturnValue

impl UnwindSafe for ReturnValue

Blanket Implementations

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

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pub 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

pub 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

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

Mutably borrows from an owned value. Read more

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impl<T> DecodeAll for T where
T: Decode,

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pub fn decode_all(input: &[u8 ]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more

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impl<T> DecodeLimit for T where
T: Decode,

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pub fn decode_all_with_depth_limit(limit: u32, input: &[u8 ]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more

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pub fn decode_with_depth_limit(limit: u32, input: &[u8 ]) -> Result<T, Error>

Decode Self with the given maximum recursion depth. Read more

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impl<T> From<T> for T

const: unstable · source

pub 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

pub 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> KeyedVec for T where
T: Codec,

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pub fn to_keyed_vec(&self, prepend_key: &[u8 ]) -> Vec<u8, Global>

Return an encoding of Self prepended by given slice.

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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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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub 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

pub 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

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

Performs the conversion.

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Enum sp_wasm_interface::ReturnValue

Variants

Unit

Value(Value)

Implementations

impl ReturnValue

pub const ENCODED_MAX_SIZE: usize

Trait Implementations

impl Clone for ReturnValue

fn clone(&self) -> ReturnValue

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

impl Debug for ReturnValue

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

impl Decode for ReturnValue

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy) -> Result<Self, Error>

fn skip<I>(input: &mut I) -> Result<(), Error> where I: Input,

fn encoded_fixed_size() -> Option<usize>

impl Encode for ReturnValue

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy)

fn size_hint(&self) -> usize

fn encode(&self) -> Vec<u8, Global>

fn using_encoded<R, F>(&self, f: F) -> R where F: FnOnce(&[u8]) -> R,

fn encoded_size(&self) -> usize

impl From<Value> for ReturnValue

fn from(v: Value) -> ReturnValue

impl PartialEq<ReturnValue> for ReturnValue

fn eq(&self, other: &ReturnValue) -> bool

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

impl Copy for ReturnValue

impl EncodeLike<ReturnValue> for ReturnValue

impl StructuralPartialEq for ReturnValue

Auto Trait Implementations

impl RefUnwindSafe for ReturnValue

impl Send for ReturnValue

impl Sync for ReturnValue

impl Unpin for ReturnValue

impl UnwindSafe for ReturnValue

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> DecodeAll for T where T: Decode,

pub fn decode_all(input: &[u8]) -> Result<T, Error>

impl<T> DecodeLimit for T where T: Decode,

pub fn decode_all_with_depth_limit(limit: u32, input: &[u8]) -> Result<T, Error>

pub fn decode_with_depth_limit(limit: u32, input: &[u8]) -> Result<T, Error>

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

impl<T> KeyedVec for T where T: Codec,

pub fn to_keyed_vec(&self, prepend_key: &[u8]) -> Vec<u8, Global>

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

type Owned = T

pub fn to_owned(&self) -> T

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

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

type Error = Infallible

pub 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

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

impl<S> Codec for S where S: Decode + Encode,

impl<'_, '_, T> EncodeLike<&'_ &'_ T> for T where T: Encode,

impl<'_, T> EncodeLike<&'_ T> for T where T: Encode,

impl<'_, T> EncodeLike<&'_ mut T> for T where T: Encode,

impl<T> EncodeLike<Arc<T>> for T where T: Encode,

impl<T> EncodeLike<Box<T, Global>> for T where T: Encode,

impl<'a, T> EncodeLike<Cow<'a, T>> for T where T: ToOwned + Encode,

impl<T> EncodeLike<Rc<T>> for T where T: Encode,

impl<S> FullCodec for S where S: Decode + FullEncode,

impl<S> FullEncode for S where S: Encode + EncodeLike<S>,

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

`Unit`

`Value(Value)`

fn decode<CodecInputEdqy: Input>(
codec_input_edqy: &mut __CodecInputEdqy
) -> Result<Self, Error>

fn skip<I>(input: &mut I) -> Result<(), Error> where
I: Input,

fn encode_to<CodecOutputEdqy: Output + ?Sized>(
&self,
codec_dest_edqy: &mut __CodecOutputEdqy
)

fn using_encoded<R, F>(&self, f: F) -> R where
F: FnOnce(&[u8 ]) -> R,

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<T> DecodeAll for T where
T: Decode,

pub fn decode_all(input: &[u8 ]) -> Result<T, Error>

impl<T> DecodeLimit for T where
T: Decode,

pub fn decode_all_with_depth_limit(limit: u32, input: &[u8 ]) -> Result<T, Error>

pub fn decode_with_depth_limit(limit: u32, input: &[u8 ]) -> Result<T, Error>

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

impl<T> KeyedVec for T where
T: Codec,

pub fn to_keyed_vec(&self, prepend_key: &[u8 ]) -> Vec<u8, Global>

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<S> Codec for S where
S: Decode + Encode,

impl<'_, '_, T> EncodeLike<&'_ &'_ T> for T where
T: Encode,

impl<'_, T> EncodeLike<&'_ T> for T where
T: Encode,

impl<'_, T> EncodeLike<&'_ mut T> for T where
T: Encode,

impl<T> EncodeLike<Arc<T>> for T where
T: Encode,

impl<T> EncodeLike<Box<T, Global>> for T where
T: Encode,

impl<'a, T> EncodeLike<Cow<'a, T>> for T where
T: ToOwned + Encode,

impl<T> EncodeLike<Rc<T>> for T where
T: Encode,

impl<S> FullCodec for S where
S: Decode + FullEncode,

impl<S> FullEncode for S where
S: Encode + EncodeLike<S>,

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