1 /// Auto-generated bindings for a pre-instantiated version of a
2 /// component which implements the world `imports`.
3 ///
4 /// This structure is created through [`ImportsPre::new`] which
5 /// takes a [`InstancePre`](wasmtime::component::InstancePre) that
6 /// has been created through a [`Linker`](wasmtime::component::Linker).
7 pub struct ImportsPre<T> {
8     instance_pre: wasmtime::component::InstancePre<T>,
9 }
10 impl<T> Clone for ImportsPre<T> {
11     fn clone(&self) -> Self {
12         Self {
13             instance_pre: self.instance_pre.clone(),
14         }
15     }
16 }
17 /// Auto-generated bindings for an instance a component which
18 /// implements the world `imports`.
19 ///
20 /// This structure is created through either
21 /// [`Imports::instantiate_async`] or by first creating
22 /// a [`ImportsPre`] followed by using
23 /// [`ImportsPre::instantiate_async`].
24 pub struct Imports {}
25 const _: () = {
26     #[allow(unused_imports)]
27     use wasmtime::component::__internal::anyhow;
28     impl<_T> ImportsPre<_T> {
29         /// Creates a new copy of `ImportsPre` bindings which can then
30         /// be used to instantiate into a particular store.
31         ///
32         /// This method may fail if the component behind `instance_pre`
33         /// does not have the required exports.
34         pub fn new(
35             instance_pre: wasmtime::component::InstancePre<_T>,
36         ) -> wasmtime::Result<Self> {
37             let _component = instance_pre.component();
38             Ok(ImportsPre { instance_pre })
39         }
40         /// Instantiates a new instance of [`Imports`] within the
41         /// `store` provided.
42         ///
43         /// This function will use `self` as the pre-instantiated
44         /// instance to perform instantiation. Afterwards the preloaded
45         /// indices in `self` are used to lookup all exports on the
46         /// resulting instance.
47         pub async fn instantiate_async(
48             &self,
49             mut store: impl wasmtime::AsContextMut<Data = _T>,
50         ) -> wasmtime::Result<Imports>
51         where
52             _T: Send,
53         {
54             let mut store = store.as_context_mut();
55             let _instance = self.instance_pre.instantiate_async(&mut store).await?;
56             Ok(Imports {})
57         }
58         pub fn engine(&self) -> &wasmtime::Engine {
59             self.instance_pre.engine()
60         }
61         pub fn instance_pre(&self) -> &wasmtime::component::InstancePre<_T> {
62             &self.instance_pre
63         }
64     }
65     impl Imports {
66         /// Convenience wrapper around [`ImportsPre::new`] and
67         /// [`ImportsPre::instantiate_async`].
68         pub async fn instantiate_async<_T>(
69             mut store: impl wasmtime::AsContextMut<Data = _T>,
70             component: &wasmtime::component::Component,
71             linker: &wasmtime::component::Linker<_T>,
72         ) -> wasmtime::Result<Imports>
73         where
74             _T: Send,
75         {
76             let pre = linker.instantiate_pre(component)?;
77             ImportsPre::new(pre)?.instantiate_async(store).await
78         }
79         pub fn add_to_linker<T, U>(
80             linker: &mut wasmtime::component::Linker<T>,
81             get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static,
82         ) -> wasmtime::Result<()>
83         where
84             T: Send,
85             U: a::b::interface_with_live_type::Host
86                 + a::b::interface_with_dead_type::Host + Send,
87         {
88             a::b::interface_with_live_type::add_to_linker(linker, get)?;
89             a::b::interface_with_dead_type::add_to_linker(linker, get)?;
90             Ok(())
91         }
92     }
93 };
94 pub mod a {
95     pub mod b {
96         #[allow(clippy::all)]
97         pub mod interface_with_live_type {
98             #[allow(unused_imports)]
99             use wasmtime::component::__internal::anyhow;
100             #[derive(wasmtime::component::ComponentType)]
101             #[derive(wasmtime::component::Lift)]
102             #[derive(wasmtime::component::Lower)]
103             #[component(record)]
104             #[derive(Clone, Copy)]
105             pub struct LiveType {
106                 #[component(name = "a")]
107                 pub a: u32,
108             }
109             impl core::fmt::Debug for LiveType {
110                 fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
111                     f.debug_struct("LiveType").field("a", &self.a).finish()
112                 }
113             }
114             const _: () = {
115                 assert!(4 == < LiveType as wasmtime::component::ComponentType >::SIZE32);
116                 assert!(
117                     4 == < LiveType as wasmtime::component::ComponentType >::ALIGN32
118                 );
119             };
120             #[wasmtime::component::__internal::async_trait]
121             pub trait Host: Send {
122                 async fn f(&mut self) -> LiveType;
123             }
124             pub trait GetHost<
125                 T,
126             >: Fn(T) -> <Self as GetHost<T>>::Host + Send + Sync + Copy + 'static {
127                 type Host: Host + Send;
128             }
129             impl<F, T, O> GetHost<T> for F
130             where
131                 F: Fn(T) -> O + Send + Sync + Copy + 'static,
132                 O: Host + Send,
133             {
134                 type Host = O;
135             }
136             pub fn add_to_linker_get_host<T>(
137                 linker: &mut wasmtime::component::Linker<T>,
138                 host_getter: impl for<'a> GetHost<&'a mut T>,
139             ) -> wasmtime::Result<()>
140             where
141                 T: Send,
142             {
143                 let mut inst = linker.instance("a:b/interface-with-live-type")?;
144                 inst.func_wrap_async(
145                     "f",
146                     move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| wasmtime::component::__internal::Box::new(async move {
147                         let host = &mut host_getter(caller.data_mut());
148                         let r = Host::f(host).await;
149                         Ok((r,))
150                     }),
151                 )?;
152                 Ok(())
153             }
154             pub fn add_to_linker<T, U>(
155                 linker: &mut wasmtime::component::Linker<T>,
156                 get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static,
157             ) -> wasmtime::Result<()>
158             where
159                 U: Host + Send,
160                 T: Send,
161             {
162                 add_to_linker_get_host(linker, get)
163             }
164             #[wasmtime::component::__internal::async_trait]
165             impl<_T: Host + ?Sized + Send> Host for &mut _T {
166                 async fn f(&mut self) -> LiveType {
167                     Host::f(*self).await
168                 }
169             }
170         }
171         #[allow(clippy::all)]
172         pub mod interface_with_dead_type {
173             #[allow(unused_imports)]
174             use wasmtime::component::__internal::anyhow;
175             #[wasmtime::component::__internal::async_trait]
176             pub trait Host: Send {}
177             pub trait GetHost<
178                 T,
179             >: Fn(T) -> <Self as GetHost<T>>::Host + Send + Sync + Copy + 'static {
180                 type Host: Host + Send;
181             }
182             impl<F, T, O> GetHost<T> for F
183             where
184                 F: Fn(T) -> O + Send + Sync + Copy + 'static,
185                 O: Host + Send,
186             {
187                 type Host = O;
188             }
189             pub fn add_to_linker_get_host<T>(
190                 linker: &mut wasmtime::component::Linker<T>,
191                 host_getter: impl for<'a> GetHost<&'a mut T>,
192             ) -> wasmtime::Result<()>
193             where
194                 T: Send,
195             {
196                 let mut inst = linker.instance("a:b/interface-with-dead-type")?;
197                 Ok(())
198             }
199             pub fn add_to_linker<T, U>(
200                 linker: &mut wasmtime::component::Linker<T>,
201                 get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static,
202             ) -> wasmtime::Result<()>
203             where
204                 U: Host + Send,
205                 T: Send,
206             {
207                 add_to_linker_get_host(linker, get)
208             }
209             #[wasmtime::component::__internal::async_trait]
210             impl<_T: Host + ?Sized + Send> Host for &mut _T {}
211         }
212     }
213 }
214