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::chars::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::chars::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::chars::GuestIndices::new(_instance_pre)?; 118 Ok(TheWorldIndices { interface0 }) 119 } 120 /// Uses the indices stored in `self` to load an instance 121 /// of [`TheWorld`] from the instance provided. 122 /// 123 /// Note that at this time this method will additionally 124 /// perform type-checks of all exports. load( &self, mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result<TheWorld>125 pub fn load( 126 &self, 127 mut store: impl wasmtime::AsContextMut, 128 instance: &wasmtime::component::Instance, 129 ) -> wasmtime::Result<TheWorld> { 130 let _ = &mut store; 131 let _instance = instance; 132 let interface0 = self.interface0.load(&mut store, &_instance)?; 133 Ok(TheWorld { interface0 }) 134 } 135 } 136 impl TheWorld { 137 /// Convenience wrapper around [`TheWorldPre::new`] and 138 /// [`TheWorldPre::instantiate`]. instantiate<_T>( store: impl wasmtime::AsContextMut<Data = _T>, component: &wasmtime::component::Component, linker: &wasmtime::component::Linker<_T>, ) -> wasmtime::Result<TheWorld>139 pub fn instantiate<_T>( 140 store: impl wasmtime::AsContextMut<Data = _T>, 141 component: &wasmtime::component::Component, 142 linker: &wasmtime::component::Linker<_T>, 143 ) -> wasmtime::Result<TheWorld> { 144 let pre = linker.instantiate_pre(component)?; 145 TheWorldPre::new(pre)?.instantiate(store) 146 } 147 /// Convenience wrapper around [`TheWorldIndices::new`] and 148 /// [`TheWorldIndices::load`]. new( mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result<TheWorld>149 pub fn new( 150 mut store: impl wasmtime::AsContextMut, 151 instance: &wasmtime::component::Instance, 152 ) -> wasmtime::Result<TheWorld> { 153 let indices = TheWorldIndices::new(&instance.instance_pre(&store))?; 154 indices.load(&mut store, instance) 155 } 156 /// Convenience wrapper around [`TheWorldPre::new`] and 157 /// [`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,158 pub async fn instantiate_async<_T>( 159 store: impl wasmtime::AsContextMut<Data = _T>, 160 component: &wasmtime::component::Component, 161 linker: &wasmtime::component::Linker<_T>, 162 ) -> wasmtime::Result<TheWorld> 163 where 164 _T: Send, 165 { 166 let pre = linker.instantiate_pre(component)?; 167 TheWorldPre::new(pre)?.instantiate_async(store).await 168 } add_to_linker<T, D>( linker: &mut wasmtime::component::Linker<T>, host_getter: fn(&mut T) -> D::Data<'_>, ) -> wasmtime::Result<()> where D: foo::foo::chars::HostWithStore + Send, for<'a> D::Data<'a>: foo::foo::chars::Host + Send, T: 'static + Send,169 pub fn add_to_linker<T, D>( 170 linker: &mut wasmtime::component::Linker<T>, 171 host_getter: fn(&mut T) -> D::Data<'_>, 172 ) -> wasmtime::Result<()> 173 where 174 D: foo::foo::chars::HostWithStore + Send, 175 for<'a> D::Data<'a>: foo::foo::chars::Host + Send, 176 T: 'static + Send, 177 { 178 foo::foo::chars::add_to_linker::<T, D>(linker, host_getter)?; 179 Ok(()) 180 } foo_foo_chars(&self) -> &exports::foo::foo::chars::Guest181 pub fn foo_foo_chars(&self) -> &exports::foo::foo::chars::Guest { 182 &self.interface0 183 } 184 } 185 }; 186 pub mod foo { 187 pub mod foo { 188 #[allow(clippy::all)] 189 pub mod chars { 190 #[allow(unused_imports)] 191 use wasmtime::component::__internal::Box; 192 pub trait HostWithStore: wasmtime::component::HasData + Send {} 193 impl<_T: ?Sized> HostWithStore for _T 194 where 195 _T: wasmtime::component::HasData + Send, 196 {} 197 pub trait Host: Send { 198 /// A function that accepts a character take_char( &mut self, x: char, ) -> impl ::core::future::Future<Output = ()> + Send199 fn take_char( 200 &mut self, 201 x: char, 202 ) -> impl ::core::future::Future<Output = ()> + Send; 203 /// A function that returns a character return_char( &mut self, ) -> impl ::core::future::Future<Output = char> + Send204 fn return_char( 205 &mut self, 206 ) -> impl ::core::future::Future<Output = char> + Send; 207 } 208 impl<_T: Host + ?Sized + Send> Host for &mut _T { 209 /// A function that accepts a character take_char( &mut self, x: char, ) -> impl ::core::future::Future<Output = ()> + Send210 fn take_char( 211 &mut self, 212 x: char, 213 ) -> impl ::core::future::Future<Output = ()> + Send { 214 async move { Host::take_char(*self, x).await } 215 } 216 /// A function that returns a character return_char( &mut self, ) -> impl ::core::future::Future<Output = char> + Send217 fn return_char( 218 &mut self, 219 ) -> impl ::core::future::Future<Output = char> + Send { 220 async move { Host::return_char(*self).await } 221 } 222 } 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,223 pub fn add_to_linker<T, D>( 224 linker: &mut wasmtime::component::Linker<T>, 225 host_getter: fn(&mut T) -> D::Data<'_>, 226 ) -> wasmtime::Result<()> 227 where 228 D: HostWithStore, 229 for<'a> D::Data<'a>: Host, 230 T: 'static + Send, 231 { 232 let mut inst = linker.instance("foo:foo/chars")?; 233 inst.func_wrap_async( 234 "take-char", 235 move | 236 mut caller: wasmtime::StoreContextMut<'_, T>, 237 (arg0,): (char,)| 238 { 239 use tracing::Instrument; 240 let span = tracing::span!( 241 tracing::Level::TRACE, "wit-bindgen import", module = 242 "chars", function = "take-char", 243 ); 244 wasmtime::component::__internal::Box::new( 245 async move { 246 tracing::event!( 247 tracing::Level::TRACE, x = tracing::field::debug(& arg0), 248 "call" 249 ); 250 let host = &mut host_getter(caller.data_mut()); 251 let r = Host::take_char(host, arg0).await; 252 tracing::event!( 253 tracing::Level::TRACE, result = tracing::field::debug(& r), 254 "return" 255 ); 256 Ok(r) 257 } 258 .instrument(span), 259 ) 260 }, 261 )?; 262 inst.func_wrap_async( 263 "return-char", 264 move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| { 265 use tracing::Instrument; 266 let span = tracing::span!( 267 tracing::Level::TRACE, "wit-bindgen import", module = 268 "chars", function = "return-char", 269 ); 270 wasmtime::component::__internal::Box::new( 271 async move { 272 tracing::event!(tracing::Level::TRACE, "call"); 273 let host = &mut host_getter(caller.data_mut()); 274 let r = Host::return_char(host).await; 275 tracing::event!( 276 tracing::Level::TRACE, result = tracing::field::debug(& r), 277 "return" 278 ); 279 Ok((r,)) 280 } 281 .instrument(span), 282 ) 283 }, 284 )?; 285 Ok(()) 286 } 287 } 288 } 289 } 290 pub mod exports { 291 pub mod foo { 292 pub mod foo { 293 #[allow(clippy::all)] 294 pub mod chars { 295 #[allow(unused_imports)] 296 use wasmtime::component::__internal::Box; 297 #[derive(Clone)] 298 pub struct Guest { 299 take_char: wasmtime::component::Func, 300 return_char: wasmtime::component::Func, 301 } 302 #[derive(Clone)] 303 pub struct GuestIndices { 304 take_char: wasmtime::component::ComponentExportIndex, 305 return_char: wasmtime::component::ComponentExportIndex, 306 } 307 impl GuestIndices { 308 /// Constructor for [`GuestIndices`] which takes a 309 /// [`Component`](wasmtime::component::Component) as input and can be executed 310 /// before instantiation. 311 /// 312 /// This constructor can be used to front-load string lookups to find exports 313 /// within a component. new<_T>( _instance_pre: &wasmtime::component::InstancePre<_T>, ) -> wasmtime::Result<GuestIndices>314 pub fn new<_T>( 315 _instance_pre: &wasmtime::component::InstancePre<_T>, 316 ) -> wasmtime::Result<GuestIndices> { 317 let instance = _instance_pre 318 .component() 319 .get_export_index(None, "foo:foo/chars") 320 .ok_or_else(|| { 321 wasmtime::format_err!( 322 "no exported instance named `foo:foo/chars`" 323 ) 324 })?; 325 let mut lookup = move |name| { 326 _instance_pre 327 .component() 328 .get_export_index(Some(&instance), name) 329 .ok_or_else(|| { 330 wasmtime::format_err!( 331 "instance export `foo:foo/chars` does \ 332 not have export `{name}`" 333 ) 334 }) 335 }; 336 let _ = &mut lookup; 337 let take_char = lookup("take-char")?; 338 let return_char = lookup("return-char")?; 339 Ok(GuestIndices { 340 take_char, 341 return_char, 342 }) 343 } load( &self, mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result<Guest>344 pub fn load( 345 &self, 346 mut store: impl wasmtime::AsContextMut, 347 instance: &wasmtime::component::Instance, 348 ) -> wasmtime::Result<Guest> { 349 let _instance = instance; 350 let _instance_pre = _instance.instance_pre(&store); 351 let _instance_type = _instance_pre.instance_type(); 352 let mut store = store.as_context_mut(); 353 let _ = &mut store; 354 let take_char = *_instance 355 .get_typed_func::<(char,), ()>(&mut store, &self.take_char)? 356 .func(); 357 let return_char = *_instance 358 .get_typed_func::< 359 (), 360 (char,), 361 >(&mut store, &self.return_char)? 362 .func(); 363 Ok(Guest { take_char, return_char }) 364 } 365 } 366 impl Guest { 367 /// A function that accepts a character call_take_char<S: wasmtime::AsContextMut>( &self, mut store: S, arg0: char, ) -> wasmtime::Result<()> where <S as wasmtime::AsContext>::Data: Send,368 pub async fn call_take_char<S: wasmtime::AsContextMut>( 369 &self, 370 mut store: S, 371 arg0: char, 372 ) -> wasmtime::Result<()> 373 where 374 <S as wasmtime::AsContext>::Data: Send, 375 { 376 use tracing::Instrument; 377 let span = tracing::span!( 378 tracing::Level::TRACE, "wit-bindgen export", module = 379 "foo:foo/chars", function = "take-char", 380 ); 381 let callee = unsafe { 382 wasmtime::component::TypedFunc::< 383 (char,), 384 (), 385 >::new_unchecked(self.take_char) 386 }; 387 let () = callee 388 .call_async(store.as_context_mut(), (arg0,)) 389 .instrument(span.clone()) 390 .await?; 391 Ok(()) 392 } 393 /// A function that returns a character call_return_char<S: wasmtime::AsContextMut>( &self, mut store: S, ) -> wasmtime::Result<char> where <S as wasmtime::AsContext>::Data: Send,394 pub async fn call_return_char<S: wasmtime::AsContextMut>( 395 &self, 396 mut store: S, 397 ) -> wasmtime::Result<char> 398 where 399 <S as wasmtime::AsContext>::Data: Send, 400 { 401 use tracing::Instrument; 402 let span = tracing::span!( 403 tracing::Level::TRACE, "wit-bindgen export", module = 404 "foo:foo/chars", function = "return-char", 405 ); 406 let callee = unsafe { 407 wasmtime::component::TypedFunc::< 408 (), 409 (char,), 410 >::new_unchecked(self.return_char) 411 }; 412 let (ret0,) = callee 413 .call_async(store.as_context_mut(), ()) 414 .instrument(span.clone()) 415 .await?; 416 Ok(ret0) 417 } 418 } 419 } 420 } 421 } 422 } 423