/// 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: 'static> 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)?; 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 fn instantiate( &self, mut store: impl wasmtime::AsContextMut, ) -> wasmtime::Result { let mut store = store.as_context_mut(); let instance = self.instance_pre.instantiate(&mut store)?; self.indices.load(&mut store, &instance) } } impl<_T: Send + 'static> TheWorldPre<_T> { /// Same as [`Self::instantiate`], except with `async`. pub async fn instantiate_async( &self, mut store: impl wasmtime::AsContextMut, ) -> wasmtime::Result { 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::anon::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`] 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`] to /// create a [`TheWorld`]. /// /// * If you've instantiated the instance yourself already /// then you can use [`TheWorld::new`]. /// /// 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::anon::Guest, } const _: () = { 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<_T>( _instance_pre: &wasmtime::component::InstancePre<_T>, ) -> wasmtime::Result { let _component = _instance_pre.component(); let _instance_type = _instance_pre.instance_type(); let interface0 = exports::foo::foo::anon::GuestIndices::new(_instance_pre)?; 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 _ = &mut store; let _instance = instance; let interface0 = self.interface0.load(&mut store, &_instance)?; Ok(TheWorld { interface0 }) } } impl TheWorld { /// Convenience wrapper around [`TheWorldPre::new`] and /// [`TheWorldPre::instantiate`]. pub fn instantiate<_T>( store: impl wasmtime::AsContextMut, component: &wasmtime::component::Component, linker: &wasmtime::component::Linker<_T>, ) -> wasmtime::Result { let pre = linker.instantiate_pre(component)?; TheWorldPre::new(pre)?.instantiate(store) } /// Convenience wrapper around [`TheWorldIndices::new`] and /// [`TheWorldIndices::load`]. pub fn new( mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result { let indices = TheWorldIndices::new(&instance.instance_pre(&store))?; indices.load(&mut store, instance) } /// Convenience wrapper around [`TheWorldPre::new`] and /// [`TheWorldPre::instantiate_async`]. pub async fn instantiate_async<_T>( store: impl wasmtime::AsContextMut, component: &wasmtime::component::Component, linker: &wasmtime::component::Linker<_T>, ) -> wasmtime::Result where _T: Send, { let pre = linker.instantiate_pre(component)?; TheWorldPre::new(pre)?.instantiate_async(store).await } pub fn add_to_linker( linker: &mut wasmtime::component::Linker, host_getter: fn(&mut T) -> D::Data<'_>, ) -> wasmtime::Result<()> where D: foo::foo::anon::HostWithStore + Send, for<'a> D::Data<'a>: foo::foo::anon::Host + Send, T: 'static + Send, { foo::foo::anon::add_to_linker::(linker, host_getter)?; Ok(()) } pub fn foo_foo_anon(&self) -> &exports::foo::foo::anon::Guest { &self.interface0 } } }; pub mod foo { pub mod foo { #[allow(clippy::all)] pub mod anon { #[allow(unused_imports)] use wasmtime::component::__internal::Box; #[derive(wasmtime::component::ComponentType)] #[derive(wasmtime::component::Lift)] #[derive(wasmtime::component::Lower)] #[component(enum)] #[derive(Clone, Copy, Eq, PartialEq)] #[repr(u8)] pub enum Error { #[component(name = "success")] Success, #[component(name = "failure")] Failure, } impl Error { pub fn name(&self) -> &'static str { match self { Error::Success => "success", Error::Failure => "failure", } } pub fn message(&self) -> &'static str { match self { Error::Success => "", Error::Failure => "", } } } impl core::fmt::Debug for Error { fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { f.debug_struct("Error") .field("code", &(*self as i32)) .field("name", &self.name()) .field("message", &self.message()) .finish() } } impl core::fmt::Display for Error { fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { write!(f, "{} (error {})", self.name(), * self as i32) } } impl core::error::Error for Error {} const _: () = { assert!(1 == < Error as wasmtime::component::ComponentType >::SIZE32); assert!(1 == < Error as wasmtime::component::ComponentType >::ALIGN32); }; pub trait HostWithStore: wasmtime::component::HasData + Send { fn option_test( accessor: &wasmtime::component::Accessor, ) -> impl ::core::future::Future< Output = Result< Option, Error, >, > + Send; } pub trait Host: Send {} impl<_T: Host + ?Sized + Send> Host for &mut _T {} pub fn add_to_linker( linker: &mut wasmtime::component::Linker, host_getter: fn(&mut T) -> D::Data<'_>, ) -> wasmtime::Result<()> where D: HostWithStore, for<'a> D::Data<'a>: Host, T: 'static + Send, { let mut inst = linker.instance("foo:foo/anon")?; inst.func_wrap_concurrent( "option-test", move |caller: &wasmtime::component::Accessor, (): ()| { wasmtime::component::__internal::Box::pin(async move { let host = &caller.with_getter(host_getter); let r = ::option_test(host).await; Ok((r,)) }) }, )?; Ok(()) } } } } pub mod exports { pub mod foo { pub mod foo { #[allow(clippy::all)] pub mod anon { #[allow(unused_imports)] use wasmtime::component::__internal::Box; #[derive(wasmtime::component::ComponentType)] #[derive(wasmtime::component::Lift)] #[derive(wasmtime::component::Lower)] #[component(enum)] #[derive(Clone, Copy, Eq, PartialEq)] #[repr(u8)] pub enum Error { #[component(name = "success")] Success, #[component(name = "failure")] Failure, } impl Error { pub fn name(&self) -> &'static str { match self { Error::Success => "success", Error::Failure => "failure", } } pub fn message(&self) -> &'static str { match self { Error::Success => "", Error::Failure => "", } } } impl core::fmt::Debug for Error { fn fmt( &self, f: &mut core::fmt::Formatter<'_>, ) -> core::fmt::Result { f.debug_struct("Error") .field("code", &(*self as i32)) .field("name", &self.name()) .field("message", &self.message()) .finish() } } impl core::fmt::Display for Error { fn fmt( &self, f: &mut core::fmt::Formatter<'_>, ) -> core::fmt::Result { write!(f, "{} (error {})", self.name(), * self as i32) } } impl core::error::Error for Error {} const _: () = { assert!( 1 == < Error as wasmtime::component::ComponentType >::SIZE32 ); assert!( 1 == < Error as wasmtime::component::ComponentType >::ALIGN32 ); }; #[derive(Clone)] pub struct Guest { option_test: wasmtime::component::Func, } #[derive(Clone)] pub struct GuestIndices { option_test: 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<_T>( _instance_pre: &wasmtime::component::InstancePre<_T>, ) -> wasmtime::Result { let instance = _instance_pre .component() .get_export_index(None, "foo:foo/anon") .ok_or_else(|| { wasmtime::format_err!( "no exported instance named `foo:foo/anon`" ) })?; let mut lookup = move |name| { _instance_pre .component() .get_export_index(Some(&instance), name) .ok_or_else(|| { wasmtime::format_err!( "instance export `foo:foo/anon` does \ not have export `{name}`" ) }) }; let _ = &mut lookup; let option_test = lookup("option-test")?; Ok(GuestIndices { option_test }) } pub fn load( &self, mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result { let _instance = instance; let _instance_pre = _instance.instance_pre(&store); let _instance_type = _instance_pre.instance_type(); let mut store = store.as_context_mut(); let _ = &mut store; let option_test = *_instance .get_typed_func::< (), ( Result< Option, Error, >, ), >(&mut store, &self.option_test)? .func(); Ok(Guest { option_test }) } } impl Guest { pub async fn call_option_test<_T, _D>( &self, accessor: &wasmtime::component::Accessor<_T, _D>, ) -> wasmtime::Result< Result, Error>, > where _T: Send, _D: wasmtime::component::HasData, { let callee = unsafe { wasmtime::component::TypedFunc::< (), ( Result< Option, Error, >, ), >::new_unchecked(self.option_test) }; let (ret0,) = callee.call_concurrent(accessor, ()).await?; Ok(ret0) } } } } } }