1 /// Auto-generated bindings for a pre-instantiated version of a 2 /// component which implements the world `the-world`. 3 /// 4 /// This structure is created through [`TheWorldPre::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 [`TheWorld`] as well. 9 pub struct TheWorldPre<T: 'static> { 10 instance_pre: wasmtime::component::InstancePre<T>, 11 indices: TheWorldIndices, 12 } 13 impl<T: 'static> Clone for TheWorldPre<T> { clone(&self) -> Self14 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> TheWorldPre<_T> { 22 /// Creates a new copy of `TheWorldPre` 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. new( instance_pre: wasmtime::component::InstancePre<_T>, ) -> wasmtime::Result<Self>27 pub fn new( 28 instance_pre: wasmtime::component::InstancePre<_T>, 29 ) -> wasmtime::Result<Self> { 30 let indices = TheWorldIndices::new(&instance_pre)?; 31 Ok(Self { instance_pre, indices }) 32 } engine(&self) -> &wasmtime::Engine33 pub fn engine(&self) -> &wasmtime::Engine { 34 self.instance_pre.engine() 35 } instance_pre(&self) -> &wasmtime::component::InstancePre<_T>36 pub fn instance_pre(&self) -> &wasmtime::component::InstancePre<_T> { 37 &self.instance_pre 38 } 39 /// Instantiates a new instance of [`TheWorld`] 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. instantiate( &self, mut store: impl wasmtime::AsContextMut<Data = _T>, ) -> wasmtime::Result<TheWorld>46 pub fn instantiate( 47 &self, 48 mut store: impl wasmtime::AsContextMut<Data = _T>, 49 ) -> wasmtime::Result<TheWorld> { 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> TheWorldPre<_T> { 56 /// Same as [`Self::instantiate`], except with `async`. instantiate_async( &self, mut store: impl wasmtime::AsContextMut<Data = _T>, ) -> wasmtime::Result<TheWorld>57 pub async fn instantiate_async( 58 &self, 59 mut store: impl wasmtime::AsContextMut<Data = _T>, 60 ) -> wasmtime::Result<TheWorld> { 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 /// `the-world`. 68 /// 69 /// This is an implementation detail of [`TheWorldPre`] and can 70 /// be constructed if needed as well. 71 /// 72 /// For more information see [`TheWorld`] as well. 73 #[derive(Clone)] 74 pub struct TheWorldIndices { 75 interface0: exports::foo::foo::strings::GuestIndices, 76 } 77 /// Auto-generated bindings for an instance a component which 78 /// implements the world `the-world`. 79 /// 80 /// This structure can be created through a number of means 81 /// depending on your requirements and what you have on hand: 82 /// 83 /// * The most convenient way is to use 84 /// [`TheWorld::instantiate`] which only needs a 85 /// [`Store`], [`Component`], and [`Linker`]. 86 /// 87 /// * Alternatively you can create a [`TheWorldPre`] ahead of 88 /// time with a [`Component`] to front-load string lookups 89 /// of exports once instead of per-instantiation. This 90 /// method then uses [`TheWorldPre::instantiate`] to 91 /// create a [`TheWorld`]. 92 /// 93 /// * If you've instantiated the instance yourself already 94 /// then you can use [`TheWorld::new`]. 95 /// 96 /// These methods are all equivalent to one another and move 97 /// around the tradeoff of what work is performed when. 98 /// 99 /// [`Store`]: wasmtime::Store 100 /// [`Component`]: wasmtime::component::Component 101 /// [`Linker`]: wasmtime::component::Linker 102 pub struct TheWorld { 103 interface0: exports::foo::foo::strings::Guest, 104 } 105 const _: () = { 106 impl TheWorldIndices { 107 /// Creates a new copy of `TheWorldIndices` bindings which can then 108 /// be used to instantiate into a particular store. 109 /// 110 /// This method may fail if the component does not have the 111 /// required exports. new<_T>( _instance_pre: &wasmtime::component::InstancePre<_T>, ) -> wasmtime::Result<Self>112 pub fn new<_T>( 113 _instance_pre: &wasmtime::component::InstancePre<_T>, 114 ) -> wasmtime::Result<Self> { 115 let _component = _instance_pre.component(); 116 let _instance_type = _instance_pre.instance_type(); 117 let interface0 = exports::foo::foo::strings::GuestIndices::new( 118 _instance_pre, 119 )?; 120 Ok(TheWorldIndices { interface0 }) 121 } 122 /// Uses the indices stored in `self` to load an instance 123 /// of [`TheWorld`] from the instance provided. 124 /// 125 /// Note that at this time this method will additionally 126 /// perform type-checks of all exports. load( &self, mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result<TheWorld>127 pub fn load( 128 &self, 129 mut store: impl wasmtime::AsContextMut, 130 instance: &wasmtime::component::Instance, 131 ) -> wasmtime::Result<TheWorld> { 132 let _ = &mut store; 133 let _instance = instance; 134 let interface0 = self.interface0.load(&mut store, &_instance)?; 135 Ok(TheWorld { interface0 }) 136 } 137 } 138 impl TheWorld { 139 /// Convenience wrapper around [`TheWorldPre::new`] and 140 /// [`TheWorldPre::instantiate`]. instantiate<_T>( store: impl wasmtime::AsContextMut<Data = _T>, component: &wasmtime::component::Component, linker: &wasmtime::component::Linker<_T>, ) -> wasmtime::Result<TheWorld>141 pub fn instantiate<_T>( 142 store: impl wasmtime::AsContextMut<Data = _T>, 143 component: &wasmtime::component::Component, 144 linker: &wasmtime::component::Linker<_T>, 145 ) -> wasmtime::Result<TheWorld> { 146 let pre = linker.instantiate_pre(component)?; 147 TheWorldPre::new(pre)?.instantiate(store) 148 } 149 /// Convenience wrapper around [`TheWorldIndices::new`] and 150 /// [`TheWorldIndices::load`]. new( mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result<TheWorld>151 pub fn new( 152 mut store: impl wasmtime::AsContextMut, 153 instance: &wasmtime::component::Instance, 154 ) -> wasmtime::Result<TheWorld> { 155 let indices = TheWorldIndices::new(&instance.instance_pre(&store))?; 156 indices.load(&mut store, instance) 157 } 158 /// Convenience wrapper around [`TheWorldPre::new`] and 159 /// [`TheWorldPre::instantiate_async`]. instantiate_async<_T>( store: impl wasmtime::AsContextMut<Data = _T>, component: &wasmtime::component::Component, linker: &wasmtime::component::Linker<_T>, ) -> wasmtime::Result<TheWorld> where _T: Send,160 pub async fn instantiate_async<_T>( 161 store: impl wasmtime::AsContextMut<Data = _T>, 162 component: &wasmtime::component::Component, 163 linker: &wasmtime::component::Linker<_T>, 164 ) -> wasmtime::Result<TheWorld> 165 where 166 _T: Send, 167 { 168 let pre = linker.instantiate_pre(component)?; 169 TheWorldPre::new(pre)?.instantiate_async(store).await 170 } add_to_linker<T, D>( linker: &mut wasmtime::component::Linker<T>, host_getter: fn(&mut T) -> D::Data<'_>, ) -> wasmtime::Result<()> where D: foo::foo::strings::HostWithStore + Send, for<'a> D::Data<'a>: foo::foo::strings::Host + Send, T: 'static + Send,171 pub fn add_to_linker<T, D>( 172 linker: &mut wasmtime::component::Linker<T>, 173 host_getter: fn(&mut T) -> D::Data<'_>, 174 ) -> wasmtime::Result<()> 175 where 176 D: foo::foo::strings::HostWithStore + Send, 177 for<'a> D::Data<'a>: foo::foo::strings::Host + Send, 178 T: 'static + Send, 179 { 180 foo::foo::strings::add_to_linker::<T, D>(linker, host_getter)?; 181 Ok(()) 182 } foo_foo_strings(&self) -> &exports::foo::foo::strings::Guest183 pub fn foo_foo_strings(&self) -> &exports::foo::foo::strings::Guest { 184 &self.interface0 185 } 186 } 187 }; 188 pub mod foo { 189 pub mod foo { 190 #[allow(clippy::all)] 191 pub mod strings { 192 #[allow(unused_imports)] 193 use wasmtime::component::__internal::Box; 194 pub trait HostWithStore: wasmtime::component::HasData + Send { a<T: Send>( accessor: &wasmtime::component::Accessor<T, Self>, x: wasmtime::component::__internal::String, ) -> impl ::core::future::Future<Output = ()> + Send195 fn a<T: Send>( 196 accessor: &wasmtime::component::Accessor<T, Self>, 197 x: wasmtime::component::__internal::String, 198 ) -> impl ::core::future::Future<Output = ()> + Send; b<T: Send>( accessor: &wasmtime::component::Accessor<T, Self>, ) -> impl ::core::future::Future< Output = wasmtime::component::__internal::String, > + Send199 fn b<T: Send>( 200 accessor: &wasmtime::component::Accessor<T, Self>, 201 ) -> impl ::core::future::Future< 202 Output = wasmtime::component::__internal::String, 203 > + Send; c<T: Send>( accessor: &wasmtime::component::Accessor<T, Self>, a: wasmtime::component::__internal::String, b: wasmtime::component::__internal::String, ) -> impl ::core::future::Future< Output = wasmtime::component::__internal::String, > + Send204 fn c<T: Send>( 205 accessor: &wasmtime::component::Accessor<T, Self>, 206 a: wasmtime::component::__internal::String, 207 b: wasmtime::component::__internal::String, 208 ) -> impl ::core::future::Future< 209 Output = wasmtime::component::__internal::String, 210 > + Send; 211 } 212 pub trait Host: Send {} 213 impl<_T: Host + ?Sized + Send> Host for &mut _T {} add_to_linker<T, D>( linker: &mut wasmtime::component::Linker<T>, host_getter: fn(&mut T) -> D::Data<'_>, ) -> wasmtime::Result<()> where D: HostWithStore, for<'a> D::Data<'a>: Host, T: 'static + Send,214 pub fn add_to_linker<T, D>( 215 linker: &mut wasmtime::component::Linker<T>, 216 host_getter: fn(&mut T) -> D::Data<'_>, 217 ) -> wasmtime::Result<()> 218 where 219 D: HostWithStore, 220 for<'a> D::Data<'a>: Host, 221 T: 'static + Send, 222 { 223 let mut inst = linker.instance("foo:foo/strings")?; 224 inst.func_wrap_concurrent( 225 "a", 226 move | 227 caller: &wasmtime::component::Accessor<T>, 228 (arg0,): (wasmtime::component::__internal::String,)| 229 { 230 wasmtime::component::__internal::Box::pin(async move { 231 let host = &caller.with_getter(host_getter); 232 let r = <D as HostWithStore>::a(host, arg0).await; 233 Ok(r) 234 }) 235 }, 236 )?; 237 inst.func_wrap_concurrent( 238 "b", 239 move |caller: &wasmtime::component::Accessor<T>, (): ()| { 240 wasmtime::component::__internal::Box::pin(async move { 241 let host = &caller.with_getter(host_getter); 242 let r = <D as HostWithStore>::b(host).await; 243 Ok((r,)) 244 }) 245 }, 246 )?; 247 inst.func_wrap_concurrent( 248 "c", 249 move | 250 caller: &wasmtime::component::Accessor<T>, 251 ( 252 arg0, 253 arg1, 254 ): ( 255 wasmtime::component::__internal::String, 256 wasmtime::component::__internal::String, 257 )| 258 { 259 wasmtime::component::__internal::Box::pin(async move { 260 let host = &caller.with_getter(host_getter); 261 let r = <D as HostWithStore>::c(host, arg0, arg1).await; 262 Ok((r,)) 263 }) 264 }, 265 )?; 266 Ok(()) 267 } 268 } 269 } 270 } 271 pub mod exports { 272 pub mod foo { 273 pub mod foo { 274 #[allow(clippy::all)] 275 pub mod strings { 276 #[allow(unused_imports)] 277 use wasmtime::component::__internal::Box; 278 #[derive(Clone)] 279 pub struct Guest { 280 a: wasmtime::component::Func, 281 b: wasmtime::component::Func, 282 c: wasmtime::component::Func, 283 } 284 #[derive(Clone)] 285 pub struct GuestIndices { 286 a: wasmtime::component::ComponentExportIndex, 287 b: wasmtime::component::ComponentExportIndex, 288 c: wasmtime::component::ComponentExportIndex, 289 } 290 impl GuestIndices { 291 /// Constructor for [`GuestIndices`] which takes a 292 /// [`Component`](wasmtime::component::Component) as input and can be executed 293 /// before instantiation. 294 /// 295 /// This constructor can be used to front-load string lookups to find exports 296 /// within a component. new<_T>( _instance_pre: &wasmtime::component::InstancePre<_T>, ) -> wasmtime::Result<GuestIndices>297 pub fn new<_T>( 298 _instance_pre: &wasmtime::component::InstancePre<_T>, 299 ) -> wasmtime::Result<GuestIndices> { 300 let instance = _instance_pre 301 .component() 302 .get_export_index(None, "foo:foo/strings") 303 .ok_or_else(|| { 304 wasmtime::format_err!( 305 "no exported instance named `foo:foo/strings`" 306 ) 307 })?; 308 let mut lookup = move |name| { 309 _instance_pre 310 .component() 311 .get_export_index(Some(&instance), name) 312 .ok_or_else(|| { 313 wasmtime::format_err!( 314 "instance export `foo:foo/strings` does \ 315 not have export `{name}`" 316 ) 317 }) 318 }; 319 let _ = &mut lookup; 320 let a = lookup("a")?; 321 let b = lookup("b")?; 322 let c = lookup("c")?; 323 Ok(GuestIndices { a, b, c }) 324 } load( &self, mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result<Guest>325 pub fn load( 326 &self, 327 mut store: impl wasmtime::AsContextMut, 328 instance: &wasmtime::component::Instance, 329 ) -> wasmtime::Result<Guest> { 330 let _instance = instance; 331 let _instance_pre = _instance.instance_pre(&store); 332 let _instance_type = _instance_pre.instance_type(); 333 let mut store = store.as_context_mut(); 334 let _ = &mut store; 335 let a = *_instance 336 .get_typed_func::<(&str,), ()>(&mut store, &self.a)? 337 .func(); 338 let b = *_instance 339 .get_typed_func::< 340 (), 341 (wasmtime::component::__internal::String,), 342 >(&mut store, &self.b)? 343 .func(); 344 let c = *_instance 345 .get_typed_func::< 346 (&str, &str), 347 (wasmtime::component::__internal::String,), 348 >(&mut store, &self.c)? 349 .func(); 350 Ok(Guest { a, b, c }) 351 } 352 } 353 impl Guest { call_a<_T, _D>( &self, accessor: &wasmtime::component::Accessor<_T, _D>, arg0: wasmtime::component::__internal::String, ) -> wasmtime::Result<()> where _T: Send, _D: wasmtime::component::HasData,354 pub async fn call_a<_T, _D>( 355 &self, 356 accessor: &wasmtime::component::Accessor<_T, _D>, 357 arg0: wasmtime::component::__internal::String, 358 ) -> wasmtime::Result<()> 359 where 360 _T: Send, 361 _D: wasmtime::component::HasData, 362 { 363 let callee = unsafe { 364 wasmtime::component::TypedFunc::< 365 (wasmtime::component::__internal::String,), 366 (), 367 >::new_unchecked(self.a) 368 }; 369 let () = callee.call_concurrent(accessor, (arg0,)).await?; 370 Ok(()) 371 } call_b<_T, _D>( &self, accessor: &wasmtime::component::Accessor<_T, _D>, ) -> wasmtime::Result<wasmtime::component::__internal::String> where _T: Send, _D: wasmtime::component::HasData,372 pub async fn call_b<_T, _D>( 373 &self, 374 accessor: &wasmtime::component::Accessor<_T, _D>, 375 ) -> wasmtime::Result<wasmtime::component::__internal::String> 376 where 377 _T: Send, 378 _D: wasmtime::component::HasData, 379 { 380 let callee = unsafe { 381 wasmtime::component::TypedFunc::< 382 (), 383 (wasmtime::component::__internal::String,), 384 >::new_unchecked(self.b) 385 }; 386 let (ret0,) = callee.call_concurrent(accessor, ()).await?; 387 Ok(ret0) 388 } call_c<_T, _D>( &self, accessor: &wasmtime::component::Accessor<_T, _D>, arg0: wasmtime::component::__internal::String, arg1: wasmtime::component::__internal::String, ) -> wasmtime::Result<wasmtime::component::__internal::String> where _T: Send, _D: wasmtime::component::HasData,389 pub async fn call_c<_T, _D>( 390 &self, 391 accessor: &wasmtime::component::Accessor<_T, _D>, 392 arg0: wasmtime::component::__internal::String, 393 arg1: wasmtime::component::__internal::String, 394 ) -> wasmtime::Result<wasmtime::component::__internal::String> 395 where 396 _T: Send, 397 _D: wasmtime::component::HasData, 398 { 399 let callee = unsafe { 400 wasmtime::component::TypedFunc::< 401 ( 402 wasmtime::component::__internal::String, 403 wasmtime::component::__internal::String, 404 ), 405 (wasmtime::component::__internal::String,), 406 >::new_unchecked(self.c) 407 }; 408 let (ret0,) = callee 409 .call_concurrent(accessor, (arg0, arg1)) 410 .await?; 411 Ok(ret0) 412 } 413 } 414 } 415 } 416 } 417 } 418