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, for<'a> D::Data<'a>: foo::foo::strings::Host, T: 'static,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, 177 for<'a> D::Data<'a>: foo::foo::strings::Host, 178 T: 'static, 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 {} 195 impl<_T: ?Sized> HostWithStore for _T 196 where 197 _T: wasmtime::component::HasData, 198 {} 199 pub trait Host { a(&mut self, x: wasmtime::component::__internal::String) -> ()200 fn a(&mut self, x: wasmtime::component::__internal::String) -> (); b(&mut self) -> wasmtime::component::__internal::String201 fn b(&mut self) -> wasmtime::component::__internal::String; c( &mut self, a: wasmtime::component::__internal::String, b: wasmtime::component::__internal::String, ) -> wasmtime::component::__internal::String202 fn c( 203 &mut self, 204 a: wasmtime::component::__internal::String, 205 b: wasmtime::component::__internal::String, 206 ) -> wasmtime::component::__internal::String; 207 } 208 impl<_T: Host + ?Sized> Host for &mut _T { a(&mut self, x: wasmtime::component::__internal::String) -> ()209 fn a(&mut self, x: wasmtime::component::__internal::String) -> () { 210 Host::a(*self, x) 211 } b(&mut self) -> wasmtime::component::__internal::String212 fn b(&mut self) -> wasmtime::component::__internal::String { 213 Host::b(*self) 214 } c( &mut self, a: wasmtime::component::__internal::String, b: wasmtime::component::__internal::String, ) -> wasmtime::component::__internal::String215 fn c( 216 &mut self, 217 a: wasmtime::component::__internal::String, 218 b: wasmtime::component::__internal::String, 219 ) -> wasmtime::component::__internal::String { 220 Host::c(*self, a, b) 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,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, 231 { 232 let mut inst = linker.instance("foo:foo/strings")?; 233 inst.func_wrap( 234 "a", 235 move | 236 mut caller: wasmtime::StoreContextMut<'_, T>, 237 (arg0,): (wasmtime::component::__internal::String,)| 238 { 239 let host = &mut host_getter(caller.data_mut()); 240 let r = Host::a(host, arg0); 241 Ok(r) 242 }, 243 )?; 244 inst.func_wrap( 245 "b", 246 move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| { 247 let host = &mut host_getter(caller.data_mut()); 248 let r = Host::b(host); 249 Ok((r,)) 250 }, 251 )?; 252 inst.func_wrap( 253 "c", 254 move | 255 mut caller: wasmtime::StoreContextMut<'_, T>, 256 ( 257 arg0, 258 arg1, 259 ): ( 260 wasmtime::component::__internal::String, 261 wasmtime::component::__internal::String, 262 )| 263 { 264 let host = &mut host_getter(caller.data_mut()); 265 let r = Host::c(host, arg0, arg1); 266 Ok((r,)) 267 }, 268 )?; 269 Ok(()) 270 } 271 } 272 } 273 } 274 pub mod exports { 275 pub mod foo { 276 pub mod foo { 277 #[allow(clippy::all)] 278 pub mod strings { 279 #[allow(unused_imports)] 280 use wasmtime::component::__internal::Box; 281 #[derive(Clone)] 282 pub struct Guest { 283 a: wasmtime::component::Func, 284 b: wasmtime::component::Func, 285 c: wasmtime::component::Func, 286 } 287 #[derive(Clone)] 288 pub struct GuestIndices { 289 a: wasmtime::component::ComponentExportIndex, 290 b: wasmtime::component::ComponentExportIndex, 291 c: wasmtime::component::ComponentExportIndex, 292 } 293 impl GuestIndices { 294 /// Constructor for [`GuestIndices`] which takes a 295 /// [`Component`](wasmtime::component::Component) as input and can be executed 296 /// before instantiation. 297 /// 298 /// This constructor can be used to front-load string lookups to find exports 299 /// within a component. new<_T>( _instance_pre: &wasmtime::component::InstancePre<_T>, ) -> wasmtime::Result<GuestIndices>300 pub fn new<_T>( 301 _instance_pre: &wasmtime::component::InstancePre<_T>, 302 ) -> wasmtime::Result<GuestIndices> { 303 let instance = _instance_pre 304 .component() 305 .get_export_index(None, "foo:foo/strings") 306 .ok_or_else(|| { 307 wasmtime::format_err!( 308 "no exported instance named `foo:foo/strings`" 309 ) 310 })?; 311 let mut lookup = move |name| { 312 _instance_pre 313 .component() 314 .get_export_index(Some(&instance), name) 315 .ok_or_else(|| { 316 wasmtime::format_err!( 317 "instance export `foo:foo/strings` does \ 318 not have export `{name}`" 319 ) 320 }) 321 }; 322 let _ = &mut lookup; 323 let a = lookup("a")?; 324 let b = lookup("b")?; 325 let c = lookup("c")?; 326 Ok(GuestIndices { a, b, c }) 327 } load( &self, mut store: impl wasmtime::AsContextMut, instance: &wasmtime::component::Instance, ) -> wasmtime::Result<Guest>328 pub fn load( 329 &self, 330 mut store: impl wasmtime::AsContextMut, 331 instance: &wasmtime::component::Instance, 332 ) -> wasmtime::Result<Guest> { 333 let _instance = instance; 334 let _instance_pre = _instance.instance_pre(&store); 335 let _instance_type = _instance_pre.instance_type(); 336 let mut store = store.as_context_mut(); 337 let _ = &mut store; 338 let a = *_instance 339 .get_typed_func::<(&str,), ()>(&mut store, &self.a)? 340 .func(); 341 let b = *_instance 342 .get_typed_func::< 343 (), 344 (wasmtime::component::__internal::String,), 345 >(&mut store, &self.b)? 346 .func(); 347 let c = *_instance 348 .get_typed_func::< 349 (&str, &str), 350 (wasmtime::component::__internal::String,), 351 >(&mut store, &self.c)? 352 .func(); 353 Ok(Guest { a, b, c }) 354 } 355 } 356 impl Guest { call_a<S: wasmtime::AsContextMut>( &self, mut store: S, arg0: &str, ) -> wasmtime::Result<()>357 pub fn call_a<S: wasmtime::AsContextMut>( 358 &self, 359 mut store: S, 360 arg0: &str, 361 ) -> wasmtime::Result<()> { 362 let callee = unsafe { 363 wasmtime::component::TypedFunc::< 364 (&str,), 365 (), 366 >::new_unchecked(self.a) 367 }; 368 let () = callee.call(store.as_context_mut(), (arg0,))?; 369 Ok(()) 370 } call_b<S: wasmtime::AsContextMut>( &self, mut store: S, ) -> wasmtime::Result<wasmtime::component::__internal::String>371 pub fn call_b<S: wasmtime::AsContextMut>( 372 &self, 373 mut store: S, 374 ) -> wasmtime::Result<wasmtime::component::__internal::String> { 375 let callee = unsafe { 376 wasmtime::component::TypedFunc::< 377 (), 378 (wasmtime::component::__internal::String,), 379 >::new_unchecked(self.b) 380 }; 381 let (ret0,) = callee.call(store.as_context_mut(), ())?; 382 Ok(ret0) 383 } call_c<S: wasmtime::AsContextMut>( &self, mut store: S, arg0: &str, arg1: &str, ) -> wasmtime::Result<wasmtime::component::__internal::String>384 pub fn call_c<S: wasmtime::AsContextMut>( 385 &self, 386 mut store: S, 387 arg0: &str, 388 arg1: &str, 389 ) -> wasmtime::Result<wasmtime::component::__internal::String> { 390 let callee = unsafe { 391 wasmtime::component::TypedFunc::< 392 (&str, &str), 393 (wasmtime::component::__internal::String,), 394 >::new_unchecked(self.c) 395 }; 396 let (ret0,) = callee.call(store.as_context_mut(), (arg0, arg1))?; 397 Ok(ret0) 398 } 399 } 400 } 401 } 402 } 403 } 404