Struct node_testing::client::sc_executor::wasmi::Signature

pub struct Signature { /* fields omitted */ }

Signature of a function.

Signature of a function consists of zero or more parameter types and zero or one return type.

Two signatures are considered equal if they have equal list of parameters and equal return types.

Implementations

impl Signature

pub fn new<C>(params: C, return_type: Option<ValueType>) -> Signature where
    C: Into<Cow<'static, [ValueType]>>, 

Creates new signature with givens parameter types and optional return type.

Examples

use wasmi::{Signature, ValueType};

// s1: (i32) -> ()
let s1 = Signature::new(&[ValueType::I32][..], None);

// s2: () -> i32
let s2 = Signature::new(&[][..], Some(ValueType::I32));

// s3: (I64) -> ()
let dynamic_params = vec![ValueType::I64];
let s3 = Signature::new(dynamic_params, None);

pub fn params(&self) -> &[ValueType]

Returns parameter types of this signature.

pub fn return_type(&self) -> Option<ValueType>

Returns return type of this signature.

Trait Implementations

impl Clone for Signature

pub fn clone(&self) -> Signature

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Signature

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

Formats the value using the given formatter.

impl<'_> From<&'_ Signature> for Signature

pub fn from(sig: &Signature) -> Signature

Performs the conversion.

impl From<Signature> for Signature

pub fn from(sig: Signature) -> Signature

Performs the conversion.

impl PartialEq<Signature> for Signature

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

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

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

This method tests for !=.

impl Eq for Signature

impl StructuralEq for Signature

impl StructuralPartialEq for Signature