Method get_module_export

crates/wasmtime/src/runtime/instance.rs:460–473

Looks up an exported [`Extern`] value by a [`ModuleExport`] value. This is similar to [`Instance::get_export`] but uses a [`ModuleExport`] value to avoid string lookups where possible. [`ModuleExport`]s can be obtained by calling [`Module::get_export_index`] on the [`Module`] that this instance was instantiated with. This method will search the module for an export with a matching entity index a

(
        &self,
        mut store: impl AsContextMut,
        export: &ModuleExport,
    )

    ///
    /// Panics if `store` does not own this instance.
    pub fn get_module_export(
        &self,
        mut store: impl AsContextMut,
        export: &ModuleExport,
    ) -> Option<Extern> {
        let store = store.as_context_mut().0;

        // Verify the `ModuleExport` matches the module used in this instance.
        if self._module(store).id() != export.module {
            return None;
        }

        Some(self._get_export(store, export.entity))
    }

    fn _get_export(&self, store: &mut StoreOpaque, entity: EntityIndex) -> Extern {
        let id = store.id();