1 /// Auto-generated bindings for a pre-instantiated version of a
2 /// component which implements the world `path2`.
3 ///
4 /// This structure is created through [`Path2Pre::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 [`Path2`] as well.
9 pub struct Path2Pre<T> {
10     instance_pre: wasmtime::component::InstancePre<T>,
11     indices: Path2Indices,
12 }
13 impl<T> Clone for Path2Pre<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> Path2Pre<_T> {
22     /// Creates a new copy of `Path2Pre` 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 = Path2Indices::new(instance_pre.component())?;
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 [`Path2`] 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<Path2> {
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 /// Auto-generated bindings for index of the exports of
56 /// `path2`.
57 ///
58 /// This is an implementation detail of [`Path2Pre`] and can
59 /// be constructed if needed as well.
60 ///
61 /// For more information see [`Path2`] as well.
62 #[derive(Clone)]
63 pub struct Path2Indices {}
64 /// Auto-generated bindings for an instance a component which
65 /// implements the world `path2`.
66 ///
67 /// This structure can be created through a number of means
68 /// depending on your requirements and what you have on hand:
69 ///
70 /// * The most convenient way is to use
71 ///   [`Path2::instantiate`] which only needs a
72 ///   [`Store`], [`Component`], and [`Linker`].
73 ///
74 /// * Alternatively you can create a [`Path2Pre`] ahead of
75 ///   time with a [`Component`] to front-load string lookups
76 ///   of exports once instead of per-instantiation. This
77 ///   method then uses [`Path2Pre::instantiate`] to
78 ///   create a [`Path2`].
79 ///
80 /// * If you've instantiated the instance yourself already
81 ///   then you can use [`Path2::new`].
82 ///
83 /// * You can also access the guts of instantiation through
84 ///   [`Path2Indices::new_instance`] followed
85 ///   by [`Path2Indices::load`] to crate an instance of this
86 ///   type.
87 ///
88 /// These methods are all equivalent to one another and move
89 /// around the tradeoff of what work is performed when.
90 ///
91 /// [`Store`]: wasmtime::Store
92 /// [`Component`]: wasmtime::component::Component
93 /// [`Linker`]: wasmtime::component::Linker
94 pub struct Path2 {}
95 const _: () = {
96     #[allow(unused_imports)]
97     use wasmtime::component::__internal::anyhow;
98     impl Path2Indices {
99         /// Creates a new copy of `Path2Indices` bindings which can then
100         /// be used to instantiate into a particular store.
101         ///
102         /// This method may fail if the component does not have the
103         /// required exports.
104         pub fn new(
105             component: &wasmtime::component::Component,
106         ) -> wasmtime::Result<Self> {
107             let _component = component;
108             Ok(Path2Indices {})
109         }
110         /// Creates a new instance of [`Path2Indices`] from an
111         /// instantiated component.
112         ///
113         /// This method of creating a [`Path2`] will perform string
114         /// lookups for all exports when this method is called. This
115         /// will only succeed if the provided instance matches the
116         /// requirements of [`Path2`].
117         pub fn new_instance(
118             mut store: impl wasmtime::AsContextMut,
119             instance: &wasmtime::component::Instance,
120         ) -> wasmtime::Result<Self> {
121             let _instance = instance;
122             Ok(Path2Indices {})
123         }
124         /// Uses the indices stored in `self` to load an instance
125         /// of [`Path2`] from the instance provided.
126         ///
127         /// Note that at this time this method will additionally
128         /// perform type-checks of all exports.
129         pub fn load(
130             &self,
131             mut store: impl wasmtime::AsContextMut,
132             instance: &wasmtime::component::Instance,
133         ) -> wasmtime::Result<Path2> {
134             let _instance = instance;
135             Ok(Path2 {})
136         }
137     }
138     impl Path2 {
139         /// Convenience wrapper around [`Path2Pre::new`] and
140         /// [`Path2Pre::instantiate`].
141         pub fn instantiate<_T>(
142             mut store: impl wasmtime::AsContextMut<Data = _T>,
143             component: &wasmtime::component::Component,
144             linker: &wasmtime::component::Linker<_T>,
145         ) -> wasmtime::Result<Path2> {
146             let pre = linker.instantiate_pre(component)?;
147             Path2Pre::new(pre)?.instantiate(store)
148         }
149         /// Convenience wrapper around [`Path2Indices::new_instance`] and
150         /// [`Path2Indices::load`].
151         pub fn new(
152             mut store: impl wasmtime::AsContextMut,
153             instance: &wasmtime::component::Instance,
154         ) -> wasmtime::Result<Path2> {
155             let indices = Path2Indices::new_instance(&mut store, instance)?;
156             indices.load(store, instance)
157         }
158         pub fn add_to_linker<T, U>(
159             linker: &mut wasmtime::component::Linker<T>,
160             get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static,
161         ) -> wasmtime::Result<()>
162         where
163             U: paths::path2::test::Host,
164         {
165             paths::path2::test::add_to_linker(linker, get)?;
166             Ok(())
167         }
168     }
169 };
170 pub mod paths {
171     pub mod path2 {
172         #[allow(clippy::all)]
173         pub mod test {
174             #[allow(unused_imports)]
175             use wasmtime::component::__internal::anyhow;
176             pub trait Host {}
177             pub trait GetHost<
178                 T,
179             >: Fn(T) -> <Self as GetHost<T>>::Host + Send + Sync + Copy + 'static {
180                 type Host: Host;
181             }
182             impl<F, T, O> GetHost<T> for F
183             where
184                 F: Fn(T) -> O + Send + Sync + Copy + 'static,
185                 O: Host,
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                 let mut inst = linker.instance("paths:path2/test")?;
194                 Ok(())
195             }
196             pub fn add_to_linker<T, U>(
197                 linker: &mut wasmtime::component::Linker<T>,
198                 get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static,
199             ) -> wasmtime::Result<()>
200             where
201                 U: Host,
202             {
203                 add_to_linker_get_host(linker, get)
204             }
205             impl<_T: Host + ?Sized> Host for &mut _T {}
206         }
207     }
208 }
209