Struct wasmer_runtime::Instance

pub struct Instance { /* fields omitted */ }

An instantiated WebAssembly module.

An Instance represents a WebAssembly module that has been instantiated with an ImportObject and is ready to be called.

Methods

impl Instance

pub fn func(&mut self, name: &str) -> Result<Function, Box<ResolveError>>

This returns the representation of a function that can be called safely.

Usage:

instance
    .func("foo")?
    .call(&[])?;

pub fn call(     &mut self,     name: &str,     args: &[Value] ) -> Result<Vec<Value>, Box<CallError>>

Call an exported webassembly function given the export name. Pass arguments by wrapping each one in the Value enum. The returned values are also each wrapped in a Value.

Note:

This returns CallResult<Vec<Value>> in order to support the future multi-value returns webassembly feature.

Usage:

// ...
let results = instance.call("foo", &[Value::I32(42)])?;
// ...

pub fn context(&self) -> &Ctx

Returns a immutable reference to the Ctx used by this Instance.

pub fn context_mut(&mut self) -> &mut Ctx

Returns a mutable reference to the Ctx used by this Instance.

pub fn exports(&mut self) -> ExportIter

Returns a iterator over all of the items exported from this instance.

pub fn module(&self) -> Module

The module used to instantiate this Instance.

Trait Implementations

impl LikeNamespace for Instance

fn get_export(&mut self, name: &str) -> Option<Export>