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> { 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: '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. 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 } 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 [`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. 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`. 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 #[allow(unused_imports)] 107 use wasmtime::component::__internal::anyhow; 108 impl TheWorldIndices { 109 /// Creates a new copy of `TheWorldIndices` bindings which can then 110 /// be used to instantiate into a particular store. 111 /// 112 /// This method may fail if the component does not have the 113 /// required exports. 114 pub fn new<_T>( 115 _instance_pre: &wasmtime::component::InstancePre<_T>, 116 ) -> wasmtime::Result<Self> { 117 let _component = _instance_pre.component(); 118 let _instance_type = _instance_pre.instance_type(); 119 let interface0 = exports::foo::foo::strings::GuestIndices::new( 120 _instance_pre, 121 )?; 122 Ok(TheWorldIndices { interface0 }) 123 } 124 /// Uses the indices stored in `self` to load an instance 125 /// of [`TheWorld`] 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<TheWorld> { 134 let _ = &mut store; 135 let _instance = instance; 136 let interface0 = self.interface0.load(&mut store, &_instance)?; 137 Ok(TheWorld { interface0 }) 138 } 139 } 140 impl TheWorld { 141 /// Convenience wrapper around [`TheWorldPre::new`] and 142 /// [`TheWorldPre::instantiate`]. 143 pub fn instantiate<_T>( 144 store: impl wasmtime::AsContextMut<Data = _T>, 145 component: &wasmtime::component::Component, 146 linker: &wasmtime::component::Linker<_T>, 147 ) -> wasmtime::Result<TheWorld> { 148 let pre = linker.instantiate_pre(component)?; 149 TheWorldPre::new(pre)?.instantiate(store) 150 } 151 /// Convenience wrapper around [`TheWorldIndices::new`] and 152 /// [`TheWorldIndices::load`]. 153 pub fn new( 154 mut store: impl wasmtime::AsContextMut, 155 instance: &wasmtime::component::Instance, 156 ) -> wasmtime::Result<TheWorld> { 157 let indices = TheWorldIndices::new(&instance.instance_pre(&store))?; 158 indices.load(&mut store, instance) 159 } 160 /// Convenience wrapper around [`TheWorldPre::new`] and 161 /// [`TheWorldPre::instantiate_async`]. 162 pub async fn instantiate_async<_T>( 163 store: impl wasmtime::AsContextMut<Data = _T>, 164 component: &wasmtime::component::Component, 165 linker: &wasmtime::component::Linker<_T>, 166 ) -> wasmtime::Result<TheWorld> 167 where 168 _T: Send, 169 { 170 let pre = linker.instantiate_pre(component)?; 171 TheWorldPre::new(pre)?.instantiate_async(store).await 172 } 173 pub fn add_to_linker<T, D>( 174 linker: &mut wasmtime::component::Linker<T>, 175 host_getter: fn(&mut T) -> D::Data<'_>, 176 ) -> wasmtime::Result<()> 177 where 178 D: foo::foo::strings::HostWithStore, 179 for<'a> D::Data<'a>: foo::foo::strings::Host, 180 T: 'static, 181 { 182 foo::foo::strings::add_to_linker::<T, D>(linker, host_getter)?; 183 Ok(()) 184 } 185 pub fn foo_foo_strings(&self) -> &exports::foo::foo::strings::Guest { 186 &self.interface0 187 } 188 } 189 }; 190 pub mod foo { 191 pub mod foo { 192 #[allow(clippy::all)] 193 pub mod strings { 194 #[allow(unused_imports)] 195 use wasmtime::component::__internal::{anyhow, Box}; 196 pub trait HostWithStore: wasmtime::component::HasData {} 197 impl<_T: ?Sized> HostWithStore for _T 198 where 199 _T: wasmtime::component::HasData, 200 {} 201 pub trait Host { 202 fn a(&mut self, x: wasmtime::component::__internal::String) -> (); 203 fn b(&mut self) -> wasmtime::component::__internal::String; 204 fn c( 205 &mut self, 206 a: wasmtime::component::__internal::String, 207 b: wasmtime::component::__internal::String, 208 ) -> wasmtime::component::__internal::String; 209 } 210 impl<_T: Host + ?Sized> Host for &mut _T { 211 fn a(&mut self, x: wasmtime::component::__internal::String) -> () { 212 Host::a(*self, x) 213 } 214 fn b(&mut self) -> wasmtime::component::__internal::String { 215 Host::b(*self) 216 } 217 fn c( 218 &mut self, 219 a: wasmtime::component::__internal::String, 220 b: wasmtime::component::__internal::String, 221 ) -> wasmtime::component::__internal::String { 222 Host::c(*self, a, b) 223 } 224 } 225 pub fn add_to_linker<T, D>( 226 linker: &mut wasmtime::component::Linker<T>, 227 host_getter: fn(&mut T) -> D::Data<'_>, 228 ) -> wasmtime::Result<()> 229 where 230 D: HostWithStore, 231 for<'a> D::Data<'a>: Host, 232 T: 'static, 233 { 234 let mut inst = linker.instance("foo:foo/strings")?; 235 inst.func_wrap( 236 "a", 237 move | 238 mut caller: wasmtime::StoreContextMut<'_, T>, 239 (arg0,): (wasmtime::component::__internal::String,)| 240 { 241 let host = &mut host_getter(caller.data_mut()); 242 let r = Host::a(host, arg0); 243 Ok(r) 244 }, 245 )?; 246 inst.func_wrap( 247 "b", 248 move |mut caller: wasmtime::StoreContextMut<'_, T>, (): ()| { 249 let host = &mut host_getter(caller.data_mut()); 250 let r = Host::b(host); 251 Ok((r,)) 252 }, 253 )?; 254 inst.func_wrap( 255 "c", 256 move | 257 mut caller: wasmtime::StoreContextMut<'_, T>, 258 ( 259 arg0, 260 arg1, 261 ): ( 262 wasmtime::component::__internal::String, 263 wasmtime::component::__internal::String, 264 )| 265 { 266 let host = &mut host_getter(caller.data_mut()); 267 let r = Host::c(host, arg0, arg1); 268 Ok((r,)) 269 }, 270 )?; 271 Ok(()) 272 } 273 } 274 } 275 } 276 pub mod exports { 277 pub mod foo { 278 pub mod foo { 279 #[allow(clippy::all)] 280 pub mod strings { 281 #[allow(unused_imports)] 282 use wasmtime::component::__internal::{anyhow, Box}; 283 #[derive(Clone)] 284 pub struct Guest { 285 a: wasmtime::component::Func, 286 b: wasmtime::component::Func, 287 c: wasmtime::component::Func, 288 } 289 #[derive(Clone)] 290 pub struct GuestIndices { 291 a: wasmtime::component::ComponentExportIndex, 292 b: wasmtime::component::ComponentExportIndex, 293 c: wasmtime::component::ComponentExportIndex, 294 } 295 impl GuestIndices { 296 /// Constructor for [`GuestIndices`] which takes a 297 /// [`Component`](wasmtime::component::Component) as input and can be executed 298 /// before instantiation. 299 /// 300 /// This constructor can be used to front-load string lookups to find exports 301 /// within a component. 302 pub fn new<_T>( 303 _instance_pre: &wasmtime::component::InstancePre<_T>, 304 ) -> wasmtime::Result<GuestIndices> { 305 let instance = _instance_pre 306 .component() 307 .get_export_index(None, "foo:foo/strings") 308 .ok_or_else(|| { 309 anyhow::anyhow!( 310 "no exported instance named `foo:foo/strings`" 311 ) 312 })?; 313 let mut lookup = move |name| { 314 _instance_pre 315 .component() 316 .get_export_index(Some(&instance), name) 317 .ok_or_else(|| { 318 anyhow::anyhow!( 319 "instance export `foo:foo/strings` does \ 320 not have export `{name}`" 321 ) 322 }) 323 }; 324 let _ = &mut lookup; 325 let a = lookup("a")?; 326 let b = lookup("b")?; 327 let c = lookup("c")?; 328 Ok(GuestIndices { a, b, c }) 329 } 330 pub fn load( 331 &self, 332 mut store: impl wasmtime::AsContextMut, 333 instance: &wasmtime::component::Instance, 334 ) -> wasmtime::Result<Guest> { 335 let _instance = instance; 336 let _instance_pre = _instance.instance_pre(&store); 337 let _instance_type = _instance_pre.instance_type(); 338 let mut store = store.as_context_mut(); 339 let _ = &mut store; 340 let a = *_instance 341 .get_typed_func::<(&str,), ()>(&mut store, &self.a)? 342 .func(); 343 let b = *_instance 344 .get_typed_func::< 345 (), 346 (wasmtime::component::__internal::String,), 347 >(&mut store, &self.b)? 348 .func(); 349 let c = *_instance 350 .get_typed_func::< 351 (&str, &str), 352 (wasmtime::component::__internal::String,), 353 >(&mut store, &self.c)? 354 .func(); 355 Ok(Guest { a, b, c }) 356 } 357 } 358 impl Guest { 359 pub fn call_a<S: wasmtime::AsContextMut>( 360 &self, 361 mut store: S, 362 arg0: &str, 363 ) -> wasmtime::Result<()> { 364 let callee = unsafe { 365 wasmtime::component::TypedFunc::< 366 (&str,), 367 (), 368 >::new_unchecked(self.a) 369 }; 370 let () = callee.call(store.as_context_mut(), (arg0,))?; 371 callee.post_return(store.as_context_mut())?; 372 Ok(()) 373 } 374 pub fn call_b<S: wasmtime::AsContextMut>( 375 &self, 376 mut store: S, 377 ) -> wasmtime::Result<wasmtime::component::__internal::String> { 378 let callee = unsafe { 379 wasmtime::component::TypedFunc::< 380 (), 381 (wasmtime::component::__internal::String,), 382 >::new_unchecked(self.b) 383 }; 384 let (ret0,) = callee.call(store.as_context_mut(), ())?; 385 callee.post_return(store.as_context_mut())?; 386 Ok(ret0) 387 } 388 pub fn call_c<S: wasmtime::AsContextMut>( 389 &self, 390 mut store: S, 391 arg0: &str, 392 arg1: &str, 393 ) -> wasmtime::Result<wasmtime::component::__internal::String> { 394 let callee = unsafe { 395 wasmtime::component::TypedFunc::< 396 (&str, &str), 397 (wasmtime::component::__internal::String,), 398 >::new_unchecked(self.c) 399 }; 400 let (ret0,) = callee.call(store.as_context_mut(), (arg0, arg1))?; 401 callee.post_return(store.as_context_mut())?; 402 Ok(ret0) 403 } 404 } 405 } 406 } 407 } 408 } 409