Method run_command_component

src/commands/run.rs:859–902

(
        &self,
        store: &mut Store<Host>,
        component: &wasmtime::component::Component,
        linker: &wasmtime::component::Linker<Host>,
    )

    /// `wasi:cli`-based commands and running their exported `run` function.
    #[cfg(feature = "component-model")]
    async fn run_command_component(
        &self,
        store: &mut Store<Host>,
        component: &wasmtime::component::Component,
        linker: &wasmtime::component::Linker<Host>,
    ) -> Result<wasmtime::component::Instance> {
        let instance = linker.instantiate_async(&mut *store, component).await?;

        let mut result = None;
        let _ = &mut result;

        // If WASIp3 is enabled at compile time, enabled at runtime, and found
        // in this component then use that to generate the result.
        #[cfg(feature = "component-model-async")]
        if self.run.common.wasi.p3.unwrap_or(crate::common::P3_DEFAULT) {
            if let Ok(command) = wasmtime_wasi::p3::bindings::Command::new(&mut *store, &instance) {
                result = Some(
                    store
                        .run_concurrent(async |store| command.wasi_cli_run().call_run(store).await)
                        .await?,
                );
            }
        }

        let result = match result {
            Some(result) => result,
            // If WASIp3 wasn't found then fall back to requiring WASIp2 and
            // this'll report an error if the right export doesn't exist.
            None => {
                wasmtime_wasi::p2::bindings::Command::new(&mut *store, &instance)?
                    .wasi_cli_run()
                    .call_run(&mut *store)
                    .await
            }
        };
        let wasm_result = result.context("failed to invoke `run` function")?;

        // Translate the `Result<(),()>` produced by wasm into a feigned
        // explicit exit here with status 1 if `Err(())` is returned.
        match wasm_result {
            Ok(()) => Ok(instance),
            Err(()) => Err(wasmtime_wasi::I32Exit(1).into()),
        }
    }

    /// Invoke a debugger component with a debuggee.
    ///