Enum sp_wasm_interface::ReturnValue
source · 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§
Implementations§
source§impl ReturnValue
impl ReturnValue
sourcepub const ENCODED_MAX_SIZE: usize = 10usize
pub const ENCODED_MAX_SIZE: usize = 10usize
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§
source§impl Clone for ReturnValue
impl Clone for ReturnValue
source§fn clone(&self) -> ReturnValue
fn clone(&self) -> ReturnValue
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for ReturnValue
impl Debug for ReturnValue
source§impl Decode for ReturnValue
impl Decode for ReturnValue
source§fn decode<__CodecInputEdqy: Input>(
__codec_input_edqy: &mut __CodecInputEdqy
) -> Result<Self, Error>
fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy ) -> Result<Self, Error>
Attempt to deserialise the value from input.
§fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>
) -> Result<DecodeFinished, Error>where
I: Input,
fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self> ) -> Result<DecodeFinished, Error>where I: Input,
Attempt to deserialize the value from input into a pre-allocated piece of memory. Read more
§fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where I: Input,
Attempt to skip the encoded value from input. Read more
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
Returns the fixed encoded size of the type. Read more
source§impl Encode for ReturnValue
impl Encode for ReturnValue
source§fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
&self,
__codec_dest_edqy: &mut __CodecOutputEdqy
)
fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )
Convert self to a slice and append it to the destination.
§fn using_encoded<R, F>(&self, f: F) -> Rwhere
F: FnOnce(&[u8]) -> R,
fn using_encoded<R, F>(&self, f: F) -> Rwhere F: FnOnce(&[u8]) -> R,
Convert self to a slice and then invoke the given closure with it.
§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
Calculates the encoded size. Read more
source§impl From<Value> for ReturnValue
impl From<Value> for ReturnValue
source§fn from(v: Value) -> ReturnValue
fn from(v: Value) -> ReturnValue
Converts to this type from the input type.
source§impl PartialEq<ReturnValue> for ReturnValue
impl PartialEq<ReturnValue> for ReturnValue
source§fn eq(&self, other: &ReturnValue) -> bool
fn eq(&self, other: &ReturnValue) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.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> DecodeAll for Twhere
T: Decode,
impl<T> DecodeAll for Twhere T: Decode,
§fn decode_all(input: &mut &[u8]) -> Result<T, Error>
fn decode_all(input: &mut &[u8]) -> Result<T, Error>
Decode
Self
and consume all of the given input data. Read more