1 /// Auto-generated bindings for a pre-instantiated version of a
2 /// component which implements the world `d`.
3 ///
4 /// This structure is created through [`DPre::new`] which
5 /// takes a [`InstancePre`](wasmtime::component::InstancePre) that
6 /// has been created through a [`Linker`](wasmtime::component::Linker).
7 ///
8 /// For more information see [`D`] as well.
9 pub struct DPre<T: 'static> {
10     instance_pre: wasmtime::component::InstancePre<T>,
11     indices: DIndices,
12 }
13 impl<T: 'static> Clone for DPre<T> {
14     fn clone(&self) -> Self {
15         Self {
16             instance_pre: self.instance_pre.clone(),
17             indices: self.indices.clone(),
18         }
19     }
20 }
21 impl<_T: 'static> DPre<_T> {
22     /// Creates a new copy of `DPre` bindings which can then
23     /// be used to instantiate into a particular store.
24     ///
25     /// This method may fail if the component behind `instance_pre`
26     /// does not have the required exports.
27     pub fn new(
28         instance_pre: wasmtime::component::InstancePre<_T>,
29     ) -> wasmtime::Result<Self> {
30         let indices = DIndices::new(&instance_pre)?;
31         Ok(Self { instance_pre, indices })
32     }
33     pub fn engine(&self) -> &wasmtime::Engine {
34         self.instance_pre.engine()
35     }
36     pub fn instance_pre(&self) -> &wasmtime::component::InstancePre<_T> {
37         &self.instance_pre
38     }
39     /// Instantiates a new instance of [`D`] within the
40     /// `store` provided.
41     ///
42     /// This function will use `self` as the pre-instantiated
43     /// instance to perform instantiation. Afterwards the preloaded
44     /// indices in `self` are used to lookup all exports on the
45     /// resulting instance.
46     pub fn instantiate(
47         &self,
48         mut store: impl wasmtime::AsContextMut<Data = _T>,
49     ) -> wasmtime::Result<D> {
50         let mut store = store.as_context_mut();
51         let instance = self.instance_pre.instantiate(&mut store)?;
52         self.indices.load(&mut store, &instance)
53     }
54 }
55 impl<_T: Send + 'static> DPre<_T> {
56     /// Same as [`Self::instantiate`], except with `async`.
57     pub async fn instantiate_async(
58         &self,
59         mut store: impl wasmtime::AsContextMut<Data = _T>,
60     ) -> wasmtime::Result<D> {
61         let mut store = store.as_context_mut();
62         let instance = self.instance_pre.instantiate_async(&mut store).await?;
63         self.indices.load(&mut store, &instance)
64     }
65 }
66 /// Auto-generated bindings for index of the exports of
67 /// `d`.
68 ///
69 /// This is an implementation detail of [`DPre`] and can
70 /// be constructed if needed as well.
71 ///
72 /// For more information see [`D`] as well.
73 #[derive(Clone)]
74 pub struct DIndices {}
75 /// Auto-generated bindings for an instance a component which
76 /// implements the world `d`.
77 ///
78 /// This structure can be created through a number of means
79 /// depending on your requirements and what you have on hand:
80 ///
81 /// * The most convenient way is to use
82 ///   [`D::instantiate`] which only needs a
83 ///   [`Store`], [`Component`], and [`Linker`].
84 ///
85 /// * Alternatively you can create a [`DPre`] ahead of
86 ///   time with a [`Component`] to front-load string lookups
87 ///   of exports once instead of per-instantiation. This
88 ///   method then uses [`DPre::instantiate`] to
89 ///   create a [`D`].
90 ///
91 /// * If you've instantiated the instance yourself already
92 ///   then you can use [`D::new`].
93 ///
94 /// These methods are all equivalent to one another and move
95 /// around the tradeoff of what work is performed when.
96 ///
97 /// [`Store`]: wasmtime::Store
98 /// [`Component`]: wasmtime::component::Component
99 /// [`Linker`]: wasmtime::component::Linker
100 pub struct D {}
101 const _: () = {
102     #[allow(unused_imports)]
103     use wasmtime::component::__internal::anyhow;
104     impl DIndices {
105         /// Creates a new copy of `DIndices` bindings which can then
106         /// be used to instantiate into a particular store.
107         ///
108         /// This method may fail if the component does not have the
109         /// required exports.
110         pub fn new<_T>(
111             _instance_pre: &wasmtime::component::InstancePre<_T>,
112         ) -> wasmtime::Result<Self> {
113             let _component = _instance_pre.component();
114             let _instance_type = _instance_pre.instance_type();
115             Ok(DIndices {})
116         }
117         /// Uses the indices stored in `self` to load an instance
118         /// of [`D`] from the instance provided.
119         ///
120         /// Note that at this time this method will additionally
121         /// perform type-checks of all exports.
122         pub fn load(
123             &self,
124             mut store: impl wasmtime::AsContextMut,
125             instance: &wasmtime::component::Instance,
126         ) -> wasmtime::Result<D> {
127             let _ = &mut store;
128             let _instance = instance;
129             Ok(D {})
130         }
131     }
132     impl D {
133         /// Convenience wrapper around [`DPre::new`] and
134         /// [`DPre::instantiate`].
135         pub fn instantiate<_T>(
136             store: impl wasmtime::AsContextMut<Data = _T>,
137             component: &wasmtime::component::Component,
138             linker: &wasmtime::component::Linker<_T>,
139         ) -> wasmtime::Result<D> {
140             let pre = linker.instantiate_pre(component)?;
141             DPre::new(pre)?.instantiate(store)
142         }
143         /// Convenience wrapper around [`DIndices::new`] and
144         /// [`DIndices::load`].
145         pub fn new(
146             mut store: impl wasmtime::AsContextMut,
147             instance: &wasmtime::component::Instance,
148         ) -> wasmtime::Result<D> {
149             let indices = DIndices::new(&instance.instance_pre(&store))?;
150             indices.load(&mut store, instance)
151         }
152         /// Convenience wrapper around [`DPre::new`] and
153         /// [`DPre::instantiate_async`].
154         pub async fn instantiate_async<_T>(
155             store: impl wasmtime::AsContextMut<Data = _T>,
156             component: &wasmtime::component::Component,
157             linker: &wasmtime::component::Linker<_T>,
158         ) -> wasmtime::Result<D>
159         where
160             _T: Send,
161         {
162             let pre = linker.instantiate_pre(component)?;
163             DPre::new(pre)?.instantiate_async(store).await
164         }
165         pub fn add_to_linker<T, D>(
166             linker: &mut wasmtime::component::Linker<T>,
167             host_getter: fn(&mut T) -> D::Data<'_>,
168         ) -> wasmtime::Result<()>
169         where
170             D: foo::foo::a::HostWithStore + foo::foo::b::HostWithStore
171                 + foo::foo::c::HostWithStore + d::HostWithStore,
172             for<'a> D::Data<
173                 'a,
174             >: foo::foo::a::Host + foo::foo::b::Host + foo::foo::c::Host + d::Host,
175             T: 'static,
176         {
177             foo::foo::a::add_to_linker::<T, D>(linker, host_getter)?;
178             foo::foo::b::add_to_linker::<T, D>(linker, host_getter)?;
179             foo::foo::c::add_to_linker::<T, D>(linker, host_getter)?;
180             d::add_to_linker::<T, D>(linker, host_getter)?;
181             Ok(())
182         }
183     }
184 };
185 pub mod foo {
186     pub mod foo {
187         #[allow(clippy::all)]
188         pub mod a {
189             #[allow(unused_imports)]
190             use wasmtime::component::__internal::{anyhow, Box};
191             #[derive(wasmtime::component::ComponentType)]
192             #[derive(wasmtime::component::Lift)]
193             #[derive(wasmtime::component::Lower)]
194             #[component(record)]
195             #[derive(Clone, Copy)]
196             pub struct Foo {}
197             impl core::fmt::Debug for Foo {
198                 fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
199                     f.debug_struct("Foo").finish()
200                 }
201             }
202             const _: () = {
203                 assert!(0 == < Foo as wasmtime::component::ComponentType >::SIZE32);
204                 assert!(1 == < Foo as wasmtime::component::ComponentType >::ALIGN32);
205             };
206             pub trait HostWithStore: wasmtime::component::HasData {}
207             impl<_T: ?Sized> HostWithStore for _T
208             where
209                 _T: wasmtime::component::HasData,
210             {}
211             pub trait Host {
212                 fn a(&mut self) -> Foo;
213             }
214             impl<_T: Host + ?Sized> Host for &mut _T {
215                 fn a(&mut self) -> Foo {
216                     Host::a(*self)
217                 }
218             }
219             pub fn add_to_linker<T, D>(
220                 linker: &mut wasmtime::component::Linker<T>,
221                 host_getter: fn(&mut T) -> D::Data<'_>,
222             ) -> wasmtime::Result<()>
223             where
224                 D: HostWithStore,
225                 for<'a> D::Data<'a>: Host,
226                 T: 'static,
227             {
228                 let mut inst = linker.instance("foo:foo/a")?;
229                 inst.func_wrap(
230                     "a",
231                     move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| {
232                         let host = &mut host_getter(caller.data_mut());
233                         let r = Host::a(host);
234                         Ok((r,))
235                     },
236                 )?;
237                 Ok(())
238             }
239         }
240         #[allow(clippy::all)]
241         pub mod b {
242             #[allow(unused_imports)]
243             use wasmtime::component::__internal::{anyhow, Box};
244             pub type Foo = super::super::super::foo::foo::a::Foo;
245             const _: () = {
246                 assert!(0 == < Foo as wasmtime::component::ComponentType >::SIZE32);
247                 assert!(1 == < Foo as wasmtime::component::ComponentType >::ALIGN32);
248             };
249             pub trait HostWithStore: wasmtime::component::HasData {}
250             impl<_T: ?Sized> HostWithStore for _T
251             where
252                 _T: wasmtime::component::HasData,
253             {}
254             pub trait Host {
255                 fn a(&mut self) -> Foo;
256             }
257             impl<_T: Host + ?Sized> Host for &mut _T {
258                 fn a(&mut self) -> Foo {
259                     Host::a(*self)
260                 }
261             }
262             pub fn add_to_linker<T, D>(
263                 linker: &mut wasmtime::component::Linker<T>,
264                 host_getter: fn(&mut T) -> D::Data<'_>,
265             ) -> wasmtime::Result<()>
266             where
267                 D: HostWithStore,
268                 for<'a> D::Data<'a>: Host,
269                 T: 'static,
270             {
271                 let mut inst = linker.instance("foo:foo/b")?;
272                 inst.func_wrap(
273                     "a",
274                     move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| {
275                         let host = &mut host_getter(caller.data_mut());
276                         let r = Host::a(host);
277                         Ok((r,))
278                     },
279                 )?;
280                 Ok(())
281             }
282         }
283         #[allow(clippy::all)]
284         pub mod c {
285             #[allow(unused_imports)]
286             use wasmtime::component::__internal::{anyhow, Box};
287             pub type Foo = super::super::super::foo::foo::b::Foo;
288             const _: () = {
289                 assert!(0 == < Foo as wasmtime::component::ComponentType >::SIZE32);
290                 assert!(1 == < Foo as wasmtime::component::ComponentType >::ALIGN32);
291             };
292             pub trait HostWithStore: wasmtime::component::HasData {}
293             impl<_T: ?Sized> HostWithStore for _T
294             where
295                 _T: wasmtime::component::HasData,
296             {}
297             pub trait Host {
298                 fn a(&mut self) -> Foo;
299             }
300             impl<_T: Host + ?Sized> Host for &mut _T {
301                 fn a(&mut self) -> Foo {
302                     Host::a(*self)
303                 }
304             }
305             pub fn add_to_linker<T, D>(
306                 linker: &mut wasmtime::component::Linker<T>,
307                 host_getter: fn(&mut T) -> D::Data<'_>,
308             ) -> wasmtime::Result<()>
309             where
310                 D: HostWithStore,
311                 for<'a> D::Data<'a>: Host,
312                 T: 'static,
313             {
314                 let mut inst = linker.instance("foo:foo/c")?;
315                 inst.func_wrap(
316                     "a",
317                     move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| {
318                         let host = &mut host_getter(caller.data_mut());
319                         let r = Host::a(host);
320                         Ok((r,))
321                     },
322                 )?;
323                 Ok(())
324             }
325         }
326     }
327 }
328 #[allow(clippy::all)]
329 pub mod d {
330     #[allow(unused_imports)]
331     use wasmtime::component::__internal::{anyhow, Box};
332     pub type Foo = super::foo::foo::c::Foo;
333     const _: () = {
334         assert!(0 == < Foo as wasmtime::component::ComponentType >::SIZE32);
335         assert!(1 == < Foo as wasmtime::component::ComponentType >::ALIGN32);
336     };
337     pub trait HostWithStore: wasmtime::component::HasData {}
338     impl<_T: ?Sized> HostWithStore for _T
339     where
340         _T: wasmtime::component::HasData,
341     {}
342     pub trait Host {
343         fn b(&mut self) -> Foo;
344     }
345     impl<_T: Host + ?Sized> Host for &mut _T {
346         fn b(&mut self) -> Foo {
347             Host::b(*self)
348         }
349     }
350     pub fn add_to_linker<T, D>(
351         linker: &mut wasmtime::component::Linker<T>,
352         host_getter: fn(&mut T) -> D::Data<'_>,
353     ) -> wasmtime::Result<()>
354     where
355         D: HostWithStore,
356         for<'a> D::Data<'a>: Host,
357         T: 'static,
358     {
359         let mut inst = linker.instance("d")?;
360         inst.func_wrap(
361             "b",
362             move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| {
363                 let host = &mut host_getter(caller.data_mut());
364                 let r = Host::b(host);
365                 Ok((r,))
366             },
367         )?;
368         Ok(())
369     }
370 }
371