Method get_resource

crates/wasmtime/src/runtime/component/instance.rs:255–272

Looks up an exported resource type by name within this [`Instance`]. The `store` argument provided must be the store that this instance lives within and the `name` argument is the lookup key by which to find the exported resource. If the resource is found then `Some` is returned and otherwise `None` is returned. The `name` here can be a string such as `&str` or it can be a [`ComponentExportIndex

(
        &self,
        mut store: impl AsContextMut,
        name: impl ExportLookup,
    )

    ///
    /// Panics if `store` does not own this instance.
    pub fn get_resource(
        &self,
        mut store: impl AsContextMut,
        name: impl ExportLookup,
    ) -> Option<ResourceType> {
        let store = store.as_context_mut().0;
        let (instance, export) = self.lookup_export(store, name)?;
        match export {
            Export::Type(TypeDef::Resource(id)) => {
                Some(InstanceType::new(instance).resource_type(*id))
            }
            Export::Type(_)
            | Export::LiftedFunction { .. }
            | Export::ModuleStatic { .. }
            | Export::ModuleImport { .. }
            | Export::Instance { .. } => None,
        }
    }

    /// A methods similar to [`Component::get_export`] except for this
    /// instance.