Struct Signature 

pub struct Signature { /* private fields */ }

Low-level Wasm function signature.

Implementations

impl Signature

pub fn new( params: impl Iterator<Item = ValueType>, ret_ty: impl Into<Option<ValueType>>, ) -> Signature

Creates a Signature from the given parameter types and return type.

pub fn parameters(&self) -> impl ExactSizeIterator<Item = &ValueType>

Returns a list of all the types of the parameters.

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

Returns the type of the return type of the function. None means “void”.

Trait Implementations

impl Clone for Signature

fn clone(&self) -> Signature

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Signature

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

Formats the value using the given formatter.

impl<'a> From<&'a Signature> for FuncType

fn from(sig: &'a Signature) -> Self

Converts to this type from the input type.

impl From<Signature> for FuncType

fn from(sig: Signature) -> FuncType

Converts to this type from the input type.

impl Hash for Signature

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

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 PartialEq for Signature

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> TryFrom<&'a FuncType> for Signature

type Error = UnsupportedTypeError

The type returned in the event of a conversion error.

fn try_from(sig: &'a FuncType) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a FuncType> for Signature

Available on (x86-64 and (Windows, or Linux and GNU, or macOS), or AArch64 and Linux and GNU, or s390x and Linux and GNU) and crate feature wasmtime only.

type Error = UnsupportedTypeError

The type returned in the event of a conversion error.

fn try_from(sig: &'a FuncType) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<FuncType> for Signature

type Error = UnsupportedTypeError

The type returned in the event of a conversion error.

fn try_from(sig: FuncType) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for Signature

impl StructuralPartialEq for Signature