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 async fn instantiate_async( 47 &self, 48 mut store: impl wasmtime::AsContextMut<Data = _T>, 49 ) -> wasmtime::Result<TheWorld> 50 where 51 _T: Send, 52 { 53 let mut store = store.as_context_mut(); 54 let instance = self.instance_pre.instantiate_async(&mut store).await?; 55 self.indices.load(&mut store, &instance) 56 } 57 } 58 /// Auto-generated bindings for index of the exports of 59 /// `the-world`. 60 /// 61 /// This is an implementation detail of [`TheWorldPre`] and can 62 /// be constructed if needed as well. 63 /// 64 /// For more information see [`TheWorld`] as well. 65 #[derive(Clone)] 66 pub struct TheWorldIndices { 67 interface0: exports::foo::foo::strings::GuestIndices, 68 } 69 /// Auto-generated bindings for an instance a component which 70 /// implements the world `the-world`. 71 /// 72 /// This structure can be created through a number of means 73 /// depending on your requirements and what you have on hand: 74 /// 75 /// * The most convenient way is to use 76 /// [`TheWorld::instantiate_async`] which only needs a 77 /// [`Store`], [`Component`], and [`Linker`]. 78 /// 79 /// * Alternatively you can create a [`TheWorldPre`] ahead of 80 /// time with a [`Component`] to front-load string lookups 81 /// of exports once instead of per-instantiation. This 82 /// method then uses [`TheWorldPre::instantiate_async`] to 83 /// create a [`TheWorld`]. 84 /// 85 /// * If you've instantiated the instance yourself already 86 /// then you can use [`TheWorld::new`]. 87 /// 88 /// These methods are all equivalent to one another and move 89 /// around the tradeoff of what work is performed when. 90 /// 91 /// [`Store`]: wasmtime::Store 92 /// [`Component`]: wasmtime::component::Component 93 /// [`Linker`]: wasmtime::component::Linker 94 pub struct TheWorld { 95 interface0: exports::foo::foo::strings::Guest, 96 } 97 const _: () = { 98 #[allow(unused_imports)] 99 use wasmtime::component::__internal::anyhow; 100 impl TheWorldIndices { 101 /// Creates a new copy of `TheWorldIndices` bindings which can then 102 /// be used to instantiate into a particular store. 103 /// 104 /// This method may fail if the component does not have the 105 /// required exports. 106 pub fn new<_T>( 107 _instance_pre: &wasmtime::component::InstancePre<_T>, 108 ) -> wasmtime::Result<Self> { 109 let _component = _instance_pre.component(); 110 let _instance_type = _instance_pre.instance_type(); 111 let interface0 = exports::foo::foo::strings::GuestIndices::new( 112 _instance_pre, 113 )?; 114 Ok(TheWorldIndices { interface0 }) 115 } 116 /// Uses the indices stored in `self` to load an instance 117 /// of [`TheWorld`] from the instance provided. 118 /// 119 /// Note that at this time this method will additionally 120 /// perform type-checks of all exports. 121 pub fn load( 122 &self, 123 mut store: impl wasmtime::AsContextMut, 124 instance: &wasmtime::component::Instance, 125 ) -> wasmtime::Result<TheWorld> { 126 let _ = &mut store; 127 let _instance = instance; 128 let interface0 = self.interface0.load(&mut store, &_instance)?; 129 Ok(TheWorld { interface0 }) 130 } 131 } 132 impl TheWorld { 133 /// Convenience wrapper around [`TheWorldPre::new`] and 134 /// [`TheWorldPre::instantiate_async`]. 135 pub async fn instantiate_async<_T>( 136 store: impl wasmtime::AsContextMut<Data = _T>, 137 component: &wasmtime::component::Component, 138 linker: &wasmtime::component::Linker<_T>, 139 ) -> wasmtime::Result<TheWorld> 140 where 141 _T: Send, 142 { 143 let pre = linker.instantiate_pre(component)?; 144 TheWorldPre::new(pre)?.instantiate_async(store).await 145 } 146 /// Convenience wrapper around [`TheWorldIndices::new`] and 147 /// [`TheWorldIndices::load`]. 148 pub fn new( 149 mut store: impl wasmtime::AsContextMut, 150 instance: &wasmtime::component::Instance, 151 ) -> wasmtime::Result<TheWorld> { 152 let indices = TheWorldIndices::new(&instance.instance_pre(&store))?; 153 indices.load(&mut store, instance) 154 } 155 pub fn add_to_linker<T, D>( 156 linker: &mut wasmtime::component::Linker<T>, 157 host_getter: fn(&mut T) -> D::Data<'_>, 158 ) -> wasmtime::Result<()> 159 where 160 D: foo::foo::strings::HostConcurrent + Send, 161 for<'a> D::Data<'a>: foo::foo::strings::Host + Send, 162 T: 'static + Send, 163 { 164 foo::foo::strings::add_to_linker::<T, D>(linker, host_getter)?; 165 Ok(()) 166 } 167 pub fn foo_foo_strings(&self) -> &exports::foo::foo::strings::Guest { 168 &self.interface0 169 } 170 } 171 }; 172 pub mod foo { 173 pub mod foo { 174 #[allow(clippy::all)] 175 pub mod strings { 176 #[allow(unused_imports)] 177 use wasmtime::component::__internal::{anyhow, Box}; 178 #[wasmtime::component::__internal::trait_variant_make(::core::marker::Send)] 179 pub trait HostConcurrent: wasmtime::component::HasData + Send { 180 fn a<T: 'static>( 181 accessor: &mut wasmtime::component::Accessor<T, Self>, 182 x: wasmtime::component::__internal::String, 183 ) -> impl ::core::future::Future<Output = ()> + Send 184 where 185 Self: Sized; 186 fn b<T: 'static>( 187 accessor: &mut wasmtime::component::Accessor<T, Self>, 188 ) -> impl ::core::future::Future< 189 Output = wasmtime::component::__internal::String, 190 > + Send 191 where 192 Self: Sized; 193 fn c<T: 'static>( 194 accessor: &mut wasmtime::component::Accessor<T, Self>, 195 a: wasmtime::component::__internal::String, 196 b: wasmtime::component::__internal::String, 197 ) -> impl ::core::future::Future< 198 Output = wasmtime::component::__internal::String, 199 > + Send 200 where 201 Self: Sized; 202 } 203 #[wasmtime::component::__internal::trait_variant_make(::core::marker::Send)] 204 pub trait Host: Send {} 205 impl<_T: Host + ?Sized + Send> Host for &mut _T {} 206 pub fn add_to_linker<T, D>( 207 linker: &mut wasmtime::component::Linker<T>, 208 host_getter: fn(&mut T) -> D::Data<'_>, 209 ) -> wasmtime::Result<()> 210 where 211 D: HostConcurrent, 212 for<'a> D::Data<'a>: Host, 213 T: 'static + Send, 214 { 215 let mut inst = linker.instance("foo:foo/strings")?; 216 inst.func_wrap_concurrent( 217 "a", 218 move | 219 caller: &mut wasmtime::component::Accessor<T>, 220 (arg0,): (wasmtime::component::__internal::String,)| 221 { 222 wasmtime::component::__internal::Box::pin(async move { 223 let accessor = &mut unsafe { caller.with_data(host_getter) }; 224 let r = <D as HostConcurrent>::a(accessor, arg0).await; 225 Ok(r) 226 }) 227 }, 228 )?; 229 inst.func_wrap_concurrent( 230 "b", 231 move |caller: &mut wasmtime::component::Accessor<T>, (): ()| { 232 wasmtime::component::__internal::Box::pin(async move { 233 let accessor = &mut unsafe { caller.with_data(host_getter) }; 234 let r = <D as HostConcurrent>::b(accessor).await; 235 Ok((r,)) 236 }) 237 }, 238 )?; 239 inst.func_wrap_concurrent( 240 "c", 241 move | 242 caller: &mut wasmtime::component::Accessor<T>, 243 ( 244 arg0, 245 arg1, 246 ): ( 247 wasmtime::component::__internal::String, 248 wasmtime::component::__internal::String, 249 )| 250 { 251 wasmtime::component::__internal::Box::pin(async move { 252 let accessor = &mut unsafe { caller.with_data(host_getter) }; 253 let r = <D as HostConcurrent>::c(accessor, arg0, arg1).await; 254 Ok((r,)) 255 }) 256 }, 257 )?; 258 Ok(()) 259 } 260 } 261 } 262 } 263 pub mod exports { 264 pub mod foo { 265 pub mod foo { 266 #[allow(clippy::all)] 267 pub mod strings { 268 #[allow(unused_imports)] 269 use wasmtime::component::__internal::{anyhow, Box}; 270 pub struct Guest { 271 a: wasmtime::component::Func, 272 b: wasmtime::component::Func, 273 c: wasmtime::component::Func, 274 } 275 #[derive(Clone)] 276 pub struct GuestIndices { 277 a: wasmtime::component::ComponentExportIndex, 278 b: wasmtime::component::ComponentExportIndex, 279 c: wasmtime::component::ComponentExportIndex, 280 } 281 impl GuestIndices { 282 /// Constructor for [`GuestIndices`] which takes a 283 /// [`Component`](wasmtime::component::Component) as input and can be executed 284 /// before instantiation. 285 /// 286 /// This constructor can be used to front-load string lookups to find exports 287 /// within a component. 288 pub fn new<_T>( 289 _instance_pre: &wasmtime::component::InstancePre<_T>, 290 ) -> wasmtime::Result<GuestIndices> { 291 let instance = _instance_pre 292 .component() 293 .get_export_index(None, "foo:foo/strings") 294 .ok_or_else(|| { 295 anyhow::anyhow!( 296 "no exported instance named `foo:foo/strings`" 297 ) 298 })?; 299 let mut lookup = move |name| { 300 _instance_pre 301 .component() 302 .get_export_index(Some(&instance), name) 303 .ok_or_else(|| { 304 anyhow::anyhow!( 305 "instance export `foo:foo/strings` does \ 306 not have export `{name}`" 307 ) 308 }) 309 }; 310 let _ = &mut lookup; 311 let a = lookup("a")?; 312 let b = lookup("b")?; 313 let c = lookup("c")?; 314 Ok(GuestIndices { a, b, c }) 315 } 316 pub fn load( 317 &self, 318 mut store: impl wasmtime::AsContextMut, 319 instance: &wasmtime::component::Instance, 320 ) -> wasmtime::Result<Guest> { 321 let _instance = instance; 322 let _instance_pre = _instance.instance_pre(&store); 323 let _instance_type = _instance_pre.instance_type(); 324 let mut store = store.as_context_mut(); 325 let _ = &mut store; 326 let a = *_instance 327 .get_typed_func::<(&str,), ()>(&mut store, &self.a)? 328 .func(); 329 let b = *_instance 330 .get_typed_func::< 331 (), 332 (wasmtime::component::__internal::String,), 333 >(&mut store, &self.b)? 334 .func(); 335 let c = *_instance 336 .get_typed_func::< 337 (&str, &str), 338 (wasmtime::component::__internal::String,), 339 >(&mut store, &self.c)? 340 .func(); 341 Ok(Guest { a, b, c }) 342 } 343 } 344 impl Guest { 345 pub fn call_a<S: wasmtime::AsContextMut>( 346 &self, 347 mut store: S, 348 arg0: wasmtime::component::__internal::String, 349 ) -> impl wasmtime::component::__internal::Future< 350 Output = wasmtime::Result<()>, 351 > + Send + 'static + use<S> 352 where 353 <S as wasmtime::AsContext>::Data: Send + 'static, 354 { 355 let callee = unsafe { 356 wasmtime::component::TypedFunc::< 357 (wasmtime::component::__internal::String,), 358 (), 359 >::new_unchecked(self.a) 360 }; 361 callee.call_concurrent(store.as_context_mut(), (arg0,)) 362 } 363 pub fn call_b<S: wasmtime::AsContextMut>( 364 &self, 365 mut store: S, 366 ) -> impl wasmtime::component::__internal::Future< 367 Output = wasmtime::Result< 368 wasmtime::component::__internal::String, 369 >, 370 > + Send + 'static + use<S> 371 where 372 <S as wasmtime::AsContext>::Data: Send + 'static, 373 { 374 let callee = unsafe { 375 wasmtime::component::TypedFunc::< 376 (), 377 (wasmtime::component::__internal::String,), 378 >::new_unchecked(self.b) 379 }; 380 wasmtime::component::__internal::FutureExt::map( 381 callee.call_concurrent(store.as_context_mut(), ()), 382 |v| v.map(|(v,)| v), 383 ) 384 } 385 pub fn call_c<S: wasmtime::AsContextMut>( 386 &self, 387 mut store: S, 388 arg0: wasmtime::component::__internal::String, 389 arg1: wasmtime::component::__internal::String, 390 ) -> impl wasmtime::component::__internal::Future< 391 Output = wasmtime::Result< 392 wasmtime::component::__internal::String, 393 >, 394 > + Send + 'static + use<S> 395 where 396 <S as wasmtime::AsContext>::Data: Send + 'static, 397 { 398 let callee = unsafe { 399 wasmtime::component::TypedFunc::< 400 ( 401 wasmtime::component::__internal::String, 402 wasmtime::component::__internal::String, 403 ), 404 (wasmtime::component::__internal::String,), 405 >::new_unchecked(self.c) 406 }; 407 wasmtime::component::__internal::FutureExt::map( 408 callee.call_concurrent(store.as_context_mut(), (arg0, arg1)), 409 |v| v.map(|(v,)| v), 410 ) 411 } 412 } 413 } 414 } 415 } 416 } 417