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)?;
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 /// These methods are all equivalent to one another and move
84 /// around the tradeoff of what work is performed when.
85 ///
86 /// [`Store`]: wasmtime::Store
87 /// [`Component`]: wasmtime::component::Component
88 /// [`Linker`]: wasmtime::component::Linker
89 pub struct Path2 {}
90 const _: () = {
91     #[allow(unused_imports)]
92     use wasmtime::component::__internal::anyhow;
93     impl Path2Indices {
94         /// Creates a new copy of `Path2Indices` bindings which can then
95         /// be used to instantiate into a particular store.
96         ///
97         /// This method may fail if the component does not have the
98         /// required exports.
99         pub fn new<_T>(
100             _instance_pre: &wasmtime::component::InstancePre<_T>,
101         ) -> wasmtime::Result<Self> {
102             let _component = _instance_pre.component();
103             let _instance_type = _instance_pre.instance_type();
104             Ok(Path2Indices {})
105         }
106         /// Uses the indices stored in `self` to load an instance
107         /// of [`Path2`] from the instance provided.
108         ///
109         /// Note that at this time this method will additionally
110         /// perform type-checks of all exports.
111         pub fn load(
112             &self,
113             mut store: impl wasmtime::AsContextMut,
114             instance: &wasmtime::component::Instance,
115         ) -> wasmtime::Result<Path2> {
116             let _ = &mut store;
117             let _instance = instance;
118             Ok(Path2 {})
119         }
120     }
121     impl Path2 {
122         /// Convenience wrapper around [`Path2Pre::new`] and
123         /// [`Path2Pre::instantiate`].
124         pub fn instantiate<_T>(
125             store: impl wasmtime::AsContextMut<Data = _T>,
126             component: &wasmtime::component::Component,
127             linker: &wasmtime::component::Linker<_T>,
128         ) -> wasmtime::Result<Path2> {
129             let pre = linker.instantiate_pre(component)?;
130             Path2Pre::new(pre)?.instantiate(store)
131         }
132         /// Convenience wrapper around [`Path2Indices::new`] and
133         /// [`Path2Indices::load`].
134         pub fn new(
135             mut store: impl wasmtime::AsContextMut,
136             instance: &wasmtime::component::Instance,
137         ) -> wasmtime::Result<Path2> {
138             let indices = Path2Indices::new(&instance.instance_pre(&store))?;
139             indices.load(&mut store, instance)
140         }
141         pub fn add_to_linker<T, U>(
142             linker: &mut wasmtime::component::Linker<T>,
143             get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static,
144         ) -> wasmtime::Result<()>
145         where
146             U: paths::path2::test::Host,
147         {
148             paths::path2::test::add_to_linker(linker, get)?;
149             Ok(())
150         }
151     }
152 };
153 pub mod paths {
154     pub mod path2 {
155         #[allow(clippy::all)]
156         pub mod test {
157             #[allow(unused_imports)]
158             use wasmtime::component::__internal::{anyhow, Box};
159             pub trait Host {}
160             pub trait GetHost<
161                 T,
162                 D,
163             >: Fn(T) -> <Self as GetHost<T, D>>::Host + Send + Sync + Copy + 'static {
164                 type Host: Host;
165             }
166             impl<F, T, D, O> GetHost<T, D> for F
167             where
168                 F: Fn(T) -> O + Send + Sync + Copy + 'static,
169                 O: Host,
170             {
171                 type Host = O;
172             }
173             pub fn add_to_linker_get_host<
174                 T,
175                 G: for<'a> GetHost<&'a mut T, T, Host: Host>,
176             >(
177                 linker: &mut wasmtime::component::Linker<T>,
178                 host_getter: G,
179             ) -> wasmtime::Result<()> {
180                 let mut inst = linker.instance("paths:path2/test")?;
181                 Ok(())
182             }
183             pub fn add_to_linker<T, U>(
184                 linker: &mut wasmtime::component::Linker<T>,
185                 get: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static,
186             ) -> wasmtime::Result<()>
187             where
188                 U: Host,
189             {
190                 add_to_linker_get_host(linker, get)
191             }
192             impl<_T: Host + ?Sized> Host for &mut _T {}
193         }
194     }
195 }
196