Struct wasmi::InstancePre

pub struct InstancePre<'a> { /* private fields */ }

A partially instantiated Instance where the start function has not yet been executed.

Note

Some users require Wasm modules to not have a start function that is required for conformant module instantiation. This API provides control over the precise instantiation process with regard to this need.

Implementations

impl<'a> InstancePre<'a>

pub fn start(self, context: impl AsContextMut) -> Result<Instance, Error>

Runs the start function of the Instance and returns its handle.

Note

This finishes the instantiation procedure.

Errors

If executing the start function traps.

Panics

If the start function is invalid albeit successful validation.

pub fn ensure_no_start(
    self,
    context: impl AsContextMut
) -> Result<Instance, InstantiationError>

Finishes instantiation ensuring that no start function exists.

Errors

If a start function exists that needs to be called for conformant module instantiation.

Trait Implementations

impl<'a> Debug for InstancePre<'a>

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

Formats the value using the given formatter.