(&mut self, func: &Function, interface_name: Option<&WorldKey>)
| 2316 | } |
| 2317 | |
| 2318 | fn export(&mut self, func: &Function, interface_name: Option<&WorldKey>) { |
| 2319 | let async_ = self |
| 2320 | .r#gen |
| 2321 | .opts |
| 2322 | .async_ |
| 2323 | .is_async(self.resolve, interface_name, func, false); |
| 2324 | |
| 2325 | let (variant, prefix) = if async_ { |
| 2326 | self.r#gen.needs_async = true; |
| 2327 | (AbiVariant::GuestExportAsync, "[async-lift]") |
| 2328 | } else { |
| 2329 | (AbiVariant::GuestExport, "") |
| 2330 | }; |
| 2331 | |
| 2332 | let sig = self.resolve.wasm_signature(variant, func); |
| 2333 | |
| 2334 | self.src.c_fns("\n"); |
| 2335 | |
| 2336 | let core_module_name = interface_name.map(|s| self.resolve.name_world_key(s)); |
| 2337 | let export_name = func.legacy_core_export_name(core_module_name.as_deref()); |
| 2338 | |
| 2339 | // Print the actual header for this function into the header file, and |
| 2340 | // it's what we'll be calling. |
| 2341 | let h_sig = self.print_sig(interface_name, func, &sig, async_); |
| 2342 | |
| 2343 | // Generate, in the C source file, the raw wasm signature that has the |
| 2344 | // canonical ABI. |
| 2345 | uwriteln!( |
| 2346 | self.src.c_adapters, |
| 2347 | "\n__attribute__((__export_name__(\"{prefix}{export_name}\")))" |
| 2348 | ); |
| 2349 | let name = self.c_func_name(interface_name, func); |
| 2350 | let import_name = self.r#gen.names.tmp(&format!("__wasm_export_{name}")); |
| 2351 | |
| 2352 | let mut f = FunctionBindgen::new(self, h_sig, &import_name); |
| 2353 | match sig.results.len() { |
| 2354 | 0 => f.r#gen.src.c_adapters("void"), |
| 2355 | 1 => f.r#gen.src.c_adapters(wasm_type(sig.results[0])), |
| 2356 | _ => unimplemented!("multi-value return not supported"), |
| 2357 | } |
| 2358 | f.r#gen.src.c_adapters(" "); |
| 2359 | f.r#gen.src.c_adapters(&import_name); |
| 2360 | f.r#gen.src.c_adapters("("); |
| 2361 | for (i, param) in sig.params.iter().enumerate() { |
| 2362 | if i > 0 { |
| 2363 | f.r#gen.src.c_adapters(", "); |
| 2364 | } |
| 2365 | let name = f.locals.tmp("arg"); |
| 2366 | uwrite!(f.r#gen.src.c_adapters, "{} {}", wasm_type(*param), name); |
| 2367 | f.params.push(name); |
| 2368 | } |
| 2369 | if sig.params.len() == 0 { |
| 2370 | f.r#gen.src.c_adapters("void"); |
| 2371 | } |
| 2372 | f.r#gen.src.c_adapters(") {\n"); |
| 2373 | |
| 2374 | // Perform all lifting/lowering and append it to our src. |
| 2375 | abi::call( |
no test coverage detected