Trait InstanceWithFunction 

pub trait InstanceWithFunction<Parameters, Results>: Instance
where
    Parameters: FlatLayout,
    Results: FlatLayout,
{
    type Function;

    // Required methods
    fn function_from_export(
        &mut self,
        export: <Self::Runtime as Runtime>::Export,
    ) -> Result<Option<Self::Function>, RuntimeError>;
    fn call(
        &mut self,
        function: &Self::Function,
        parameters: Parameters,
    ) -> Result<Results, RuntimeError>;

    // Provided method
    fn load_function(
        &mut self,
        name: &str,
    ) -> Result<Self::Function, RuntimeError> { ... }
}

How a runtime supports a function signature.

Required Associated Types

type Function

The runtime-specific type to represent the function.

Required Methods

fn function_from_export( &mut self, export: <Self::Runtime as Runtime>::Export, ) -> Result<Option<Self::Function>, RuntimeError>

Converts an export into a function, if it is one.

fn call( &mut self, function: &Self::Function, parameters: Parameters, ) -> Result<Results, RuntimeError>

Calls the function from this instance using the specified parameters.

Provided Methods

fn load_function(&mut self, name: &str) -> Result<Self::Function, RuntimeError>

Loads a function from the guest Wasm instance.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<Parameters, Results, I> InstanceWithFunction<Parameters, Results> for &mut I

where I: InstanceWithFunction<Parameters, Results>, Parameters: FlatLayout, Results: FlatLayout,

type Function = <I as InstanceWithFunction<Parameters, Results>>::Function

fn function_from_export( &mut self, export: <Self::Runtime as Runtime>::Export, ) -> Result<Option<Self::Function>, RuntimeError>

fn call( &mut self, function: &Self::Function, parameters: Parameters, ) -> Result<Results, RuntimeError>

Implementors

impl<Parameters, Results, UserData> InstanceWithFunction<Parameters, Results> for StubInstance<UserData>

where Parameters: FlatLayout + 'static, Results: FlatLayout + 'static,

type Function = ()