/// Auto-generated bindings for a pre-instantiated version of a /// component which implements the world `the-world`. /// /// This structure is created through [`TheWorldPre::new`] which /// takes a [`InstancePre`](wasmtime::component::InstancePre) that /// has been created through a [`Linker`](wasmtime::component::Linker). /// /// For more information see [`TheWorld`] as well. pub struct TheWorldPre { instance_pre: wasmtime::component::InstancePre, indices: TheWorldIndices, } impl Clone for TheWorldPre { fn clone(&self) -> Self { Self { instance_pre: self.instance_pre.clone(), indices: self.indices.clone(), } } } impl<_T> TheWorldPre<_T> { /// Creates a new copy of `TheWorldPre` bindings which can then /// be used to instantiate into a particular store. /// /// This method may fail if the component behind `instance_pre` /// does not have the required exports. pub fn new( instance_pre: wasmtime::component::InstancePre<_T>, ) -> wasmtime::Result { let indices = TheWorldIndices::new(instance_pre.component())?; Ok(Self { instance_pre, indices }) } pub fn engine(&self) -> &wasmtime::Engine { self.instance_pre.engine() } pub fn instance_pre(&self) -> &wasmtime::component::InstancePre<_T> { &self.instance_pre } /// Instantiates a new instance of [`TheWorld`] within the /// `store` provided. /// /// This function will use `self` as the pre-instantiated /// instance to perform instantiation. Afterwards the preloaded /// indices in `self` are used to lookup all exports on the /// resulting instance. pub async fn instantiate_async( &self, mut store: impl wasmtime::AsContextMut, ) -> wasmtime::Result where _T: Send + 'static, { let mut store = store.as_context_mut(); let instance = self.instance_pre.instantiate_async(&mut store).await?; self.indices.load(&mut store, &instance) } } /// Auto-generated bindings for index of the exports of /// `the-world`. /// /// This is an implementation detail of [`TheWorldPre`] and can /// be constructed if needed as well. /// /// For more information see [`TheWorld`] as well. #[derive(Clone)] pub struct TheWorldIndices { interface0: exports::foo::foo::strings::GuestIndices, } /// Auto-generated bindings for an instance a component which /// implements the world `the-world`. /// /// This structure can be created through a number of means /// depending on your requirements and what you have on hand: /// /// * The most convenient way is to use /// [`TheWorld::instantiate_async`] which only needs a /// [`Store`], [`Component`], and [`Linker`]. /// /// * Alternatively you can create a [`TheWorldPre`] ahead of /// time with a [`Component`] to front-load string lookups /// of exports once instead of per-instantiation. This /// method then uses [`TheWorldPre::instantiate_async`] to /// create a [`TheWorld`]. /// /// * If you've instantiated the instance yourself already /// then you can use [`TheWorld::new`]. /// /// * You can also access the guts of instantiation through /// [`TheWorldIndices::new_instance`] followed /// by [`TheWorldIndices::load`] to crate an instance of this /// type. /// /// These methods are all equivalent to one another and move /// around the tradeoff of what work is performed when. /// /// [`Store`]: wasmtime::Store /// [`Component`]: wasmtime::component::Component /// [`Linker`]: wasmtime::component::Linker pub struct TheWorld { interface0: exports::foo::foo::strings::Guest, } const _: () = { #[allow(unused_imports)] use wasmtime::component::__internal::anyhow; impl TheWorldIndices { /// Creates a new copy of `TheWorldIndices` bindings which can then /// be used to instantiate into a particular store. /// /// This method may fail if the component does not have the /// required exports. pub fn new( component: &wasmtime::component::Component, ) -> wasmtime::Result { let _component = component; let interface0 = exports::foo::foo::strings::GuestIndices::new(_component)?; Ok(TheWorldIndices { interface0 }) } /// Creates a new instance of [`TheWorldIndices`] from an /// instantiated component. /// /// This method of creating a [`TheWorld`] will perform string /// lookups for all exports when this method is called. This /// will only succeed if the provided instance matches the /// requirements of [`TheWorld`]. pub fn new_instance( mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result { let _instance = instance; let interface0 = exports::foo::foo::strings::GuestIndices::new_instance( &mut store, _instance, )?; Ok(TheWorldIndices { interface0 }) } /// Uses the indices stored in `self` to load an instance /// of [`TheWorld`] from the instance provided. /// /// Note that at this time this method will additionally /// perform type-checks of all exports. pub fn load( &self, mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result { let _instance = instance; let interface0 = self.interface0.load(&mut store, &_instance)?; Ok(TheWorld { interface0 }) } } impl TheWorld { /// Convenience wrapper around [`TheWorldPre::new`] and /// [`TheWorldPre::instantiate_async`]. pub async fn instantiate_async<_T>( mut store: impl wasmtime::AsContextMut, component: &wasmtime::component::Component, linker: &wasmtime::component::Linker<_T>, ) -> wasmtime::Result where _T: Send + 'static, { let pre = linker.instantiate_pre(component)?; TheWorldPre::new(pre)?.instantiate_async(store).await } /// Convenience wrapper around [`TheWorldIndices::new_instance`] and /// [`TheWorldIndices::load`]. pub fn new( mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result { let indices = TheWorldIndices::new_instance(&mut store, instance)?; indices.load(store, instance) } pub fn add_to_linker( linker: &mut wasmtime::component::Linker, get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static, ) -> wasmtime::Result<()> where T: Send + foo::foo::strings::Host + 'static, U: Send + foo::foo::strings::Host, { foo::foo::strings::add_to_linker(linker, get)?; Ok(()) } pub fn foo_foo_strings(&self) -> &exports::foo::foo::strings::Guest { &self.interface0 } } }; pub mod foo { pub mod foo { #[allow(clippy::all)] pub mod strings { #[allow(unused_imports)] use wasmtime::component::__internal::{anyhow, Box}; pub trait Host { type Data; fn a( store: wasmtime::StoreContextMut<'_, Self::Data>, x: wasmtime::component::__internal::String, ) -> impl ::core::future::Future< Output = impl FnOnce( wasmtime::StoreContextMut<'_, Self::Data>, ) -> () + Send + Sync + 'static, > + Send + Sync + 'static where Self: Sized; fn b( store: wasmtime::StoreContextMut<'_, Self::Data>, ) -> impl ::core::future::Future< Output = impl FnOnce( wasmtime::StoreContextMut<'_, Self::Data>, ) -> wasmtime::component::__internal::String + Send + Sync + 'static, > + Send + Sync + 'static where Self: Sized; fn c( store: wasmtime::StoreContextMut<'_, Self::Data>, a: wasmtime::component::__internal::String, b: wasmtime::component::__internal::String, ) -> impl ::core::future::Future< Output = impl FnOnce( wasmtime::StoreContextMut<'_, Self::Data>, ) -> wasmtime::component::__internal::String + Send + Sync + 'static, > + Send + Sync + 'static where Self: Sized; } pub trait GetHost< T, D, >: Fn(T) -> >::Host + Send + Sync + Copy + 'static { type Host: Host + Send; } impl GetHost for F where F: Fn(T) -> O + Send + Sync + Copy + 'static, O: Host + Send, { type Host = O; } pub fn add_to_linker_get_host< T, G: for<'a> GetHost<&'a mut T, T, Host: Host + Send>, >( linker: &mut wasmtime::component::Linker, host_getter: G, ) -> wasmtime::Result<()> where T: Send + 'static, { let mut inst = linker.instance("foo:foo/strings")?; inst.func_wrap_concurrent( "a", move | mut caller: wasmtime::StoreContextMut<'_, T>, (arg0,): (wasmtime::component::__internal::String,)| { let host = caller; let r = ::a(host, arg0); Box::pin(async move { let fun = r.await; Box::new(move |mut caller: wasmtime::StoreContextMut<'_, T>| { let r = fun(caller); Ok(r) }) as Box< dyn FnOnce( wasmtime::StoreContextMut<'_, T>, ) -> wasmtime::Result<()> + Send + Sync, > }) as ::core::pin::Pin< Box< dyn ::core::future::Future< Output = Box< dyn FnOnce( wasmtime::StoreContextMut<'_, T>, ) -> wasmtime::Result<()> + Send + Sync, >, > + Send + Sync + 'static, >, > }, )?; inst.func_wrap_concurrent( "b", move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| { let host = caller; let r = ::b(host); Box::pin(async move { let fun = r.await; Box::new(move |mut caller: wasmtime::StoreContextMut<'_, T>| { let r = fun(caller); Ok((r,)) }) as Box< dyn FnOnce( wasmtime::StoreContextMut<'_, T>, ) -> wasmtime::Result< (wasmtime::component::__internal::String,), > + Send + Sync, > }) as ::core::pin::Pin< Box< dyn ::core::future::Future< Output = Box< dyn FnOnce( wasmtime::StoreContextMut<'_, T>, ) -> wasmtime::Result< (wasmtime::component::__internal::String,), > + Send + Sync, >, > + Send + Sync + 'static, >, > }, )?; inst.func_wrap_concurrent( "c", move | mut caller: wasmtime::StoreContextMut<'_, T>, ( arg0, arg1, ): ( wasmtime::component::__internal::String, wasmtime::component::__internal::String, )| { let host = caller; let r = ::c(host, arg0, arg1); Box::pin(async move { let fun = r.await; Box::new(move |mut caller: wasmtime::StoreContextMut<'_, T>| { let r = fun(caller); Ok((r,)) }) as Box< dyn FnOnce( wasmtime::StoreContextMut<'_, T>, ) -> wasmtime::Result< (wasmtime::component::__internal::String,), > + Send + Sync, > }) as ::core::pin::Pin< Box< dyn ::core::future::Future< Output = Box< dyn FnOnce( wasmtime::StoreContextMut<'_, T>, ) -> wasmtime::Result< (wasmtime::component::__internal::String,), > + Send + Sync, >, > + Send + Sync + 'static, >, > }, )?; Ok(()) } pub fn add_to_linker( linker: &mut wasmtime::component::Linker, get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static, ) -> wasmtime::Result<()> where U: Host + Send, T: Send + 'static, { add_to_linker_get_host(linker, get) } impl<_T: Host> Host for &mut _T { type Data = _T::Data; fn a( store: wasmtime::StoreContextMut<'_, Self::Data>, x: wasmtime::component::__internal::String, ) -> impl ::core::future::Future< Output = impl FnOnce( wasmtime::StoreContextMut<'_, Self::Data>, ) -> () + Send + Sync + 'static, > + Send + Sync + 'static where Self: Sized, { <_T as Host>::a(store, x) } fn b( store: wasmtime::StoreContextMut<'_, Self::Data>, ) -> impl ::core::future::Future< Output = impl FnOnce( wasmtime::StoreContextMut<'_, Self::Data>, ) -> wasmtime::component::__internal::String + Send + Sync + 'static, > + Send + Sync + 'static where Self: Sized, { <_T as Host>::b(store) } fn c( store: wasmtime::StoreContextMut<'_, Self::Data>, a: wasmtime::component::__internal::String, b: wasmtime::component::__internal::String, ) -> impl ::core::future::Future< Output = impl FnOnce( wasmtime::StoreContextMut<'_, Self::Data>, ) -> wasmtime::component::__internal::String + Send + Sync + 'static, > + Send + Sync + 'static where Self: Sized, { <_T as Host>::c(store, a, b) } } } } } pub mod exports { pub mod foo { pub mod foo { #[allow(clippy::all)] pub mod strings { #[allow(unused_imports)] use wasmtime::component::__internal::{anyhow, Box}; pub struct Guest { a: wasmtime::component::Func, b: wasmtime::component::Func, c: wasmtime::component::Func, } #[derive(Clone)] pub struct GuestIndices { a: wasmtime::component::ComponentExportIndex, b: wasmtime::component::ComponentExportIndex, c: wasmtime::component::ComponentExportIndex, } impl GuestIndices { /// Constructor for [`GuestIndices`] which takes a /// [`Component`](wasmtime::component::Component) as input and can be executed /// before instantiation. /// /// This constructor can be used to front-load string lookups to find exports /// within a component. pub fn new( component: &wasmtime::component::Component, ) -> wasmtime::Result { let (_, instance) = component .export_index(None, "foo:foo/strings") .ok_or_else(|| { anyhow::anyhow!( "no exported instance named `foo:foo/strings`" ) })?; Self::_new(|name| { component.export_index(Some(&instance), name).map(|p| p.1) }) } /// This constructor is similar to [`GuestIndices::new`] except that it /// performs string lookups after instantiation time. pub fn new_instance( mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result { let instance_export = instance .get_export(&mut store, None, "foo:foo/strings") .ok_or_else(|| { anyhow::anyhow!( "no exported instance named `foo:foo/strings`" ) })?; Self::_new(|name| { instance.get_export(&mut store, Some(&instance_export), name) }) } fn _new( mut lookup: impl FnMut( &str, ) -> Option, ) -> wasmtime::Result { let mut lookup = move |name| { lookup(name) .ok_or_else(|| { anyhow::anyhow!( "instance export `foo:foo/strings` does \ not have export `{name}`" ) }) }; let _ = &mut lookup; let a = lookup("a")?; let b = lookup("b")?; let c = lookup("c")?; Ok(GuestIndices { a, b, c }) } pub fn load( &self, mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result { let mut store = store.as_context_mut(); let _ = &mut store; let _instance = instance; let a = *_instance .get_typed_func::<(&str,), ()>(&mut store, &self.a)? .func(); let b = *_instance .get_typed_func::< (), (wasmtime::component::__internal::String,), >(&mut store, &self.b)? .func(); let c = *_instance .get_typed_func::< (&str, &str), (wasmtime::component::__internal::String,), >(&mut store, &self.c)? .func(); Ok(Guest { a, b, c }) } } impl Guest { pub async fn call_a( &self, mut store: S, arg0: wasmtime::component::__internal::String, ) -> wasmtime::Result> where ::Data: Send + 'static, { let callee = unsafe { wasmtime::component::TypedFunc::< (wasmtime::component::__internal::String,), (), >::new_unchecked(self.a) }; let promise = callee .call_concurrent(store.as_context_mut(), (arg0,)) .await?; Ok(promise) } pub async fn call_b( &self, mut store: S, ) -> wasmtime::Result< wasmtime::component::Promise< wasmtime::component::__internal::String, >, > where ::Data: Send + 'static, { let callee = unsafe { wasmtime::component::TypedFunc::< (), (wasmtime::component::__internal::String,), >::new_unchecked(self.b) }; let promise = callee .call_concurrent(store.as_context_mut(), ()) .await?; Ok(promise.map(|(v,)| v)) } pub async fn call_c( &self, mut store: S, arg0: wasmtime::component::__internal::String, arg1: wasmtime::component::__internal::String, ) -> wasmtime::Result< wasmtime::component::Promise< wasmtime::component::__internal::String, >, > where ::Data: Send + 'static, { let callee = unsafe { wasmtime::component::TypedFunc::< ( wasmtime::component::__internal::String, wasmtime::component::__internal::String, ), (wasmtime::component::__internal::String,), >::new_unchecked(self.c) }; let promise = callee .call_concurrent(store.as_context_mut(), (arg0, arg1)) .await?; Ok(promise.map(|(v,)| v)) } } } } } }