1 files changed, 578 insertions, 0 deletions
diff --git a/cli/worker.rs b/cli/worker.rs
new file mode 100644
index 000000000..8ab9b4c67
--- /dev/null
+++ b/cli/worker.rs
@@ -0,0 +1,578 @@
+use std::path::PathBuf;
+use std::sync::Arc;
+
+use deno_ast::ModuleSpecifier;
+use deno_core::error::AnyError;
+use deno_core::futures::task::LocalFutureObj;
+use deno_core::futures::FutureExt;
+use deno_core::located_script_name;
+use deno_core::serde_json::json;
+use deno_core::Extension;
+use deno_core::ModuleId;
+use deno_runtime::colors;
+use deno_runtime::ops::worker_host::CreateWebWorkerCb;
+use deno_runtime::ops::worker_host::PreloadModuleCb;
+use deno_runtime::permissions::Permissions;
+use deno_runtime::web_worker::WebWorker;
+use deno_runtime::web_worker::WebWorkerOptions;
+use deno_runtime::worker::MainWorker;
+use deno_runtime::worker::WorkerOptions;
+use deno_runtime::BootstrapOptions;
+
+use crate::checksum;
+use crate::compat;
+use crate::errors;
+use crate::fmt_errors::format_js_error;
+use crate::module_loader::CliModuleLoader;
+use crate::ops;
+use crate::proc_state::ProcState;
+use crate::tools;
+use crate::tools::coverage::CoverageCollector;
+use crate::tools::test::TestMode;
+use crate::version;
+
+pub struct CliMainWorker {
+  main_module: ModuleSpecifier,
+  worker: MainWorker,
+  ps: ProcState,
+}
+
+impl CliMainWorker {
+  pub fn into_main_worker(self) -> MainWorker {
+    self.worker
+  }
+
+  pub async fn preload_main_module(&mut self) -> Result<ModuleId, AnyError> {
+    self.worker.preload_main_module(&self.main_module).await
+  }
+
+  pub async fn setup_repl(&mut self) -> Result<(), AnyError> {
+    if self.ps.options.compat() {
+      self.worker.execute_side_module(&compat::GLOBAL_URL).await?;
+      compat::add_global_require(
+        &mut self.worker.js_runtime,
+        self.main_module.as_str(),
+      )?;
+      self.worker.run_event_loop(false).await?;
+      compat::setup_builtin_modules(&mut self.worker.js_runtime)?;
+    }
+    self.worker.run_event_loop(false).await?;
+    Ok(())
+  }
+
+  pub async fn run(&mut self) -> Result<i32, AnyError> {
+    let mut maybe_coverage_collector =
+      self.maybe_setup_coverage_collector().await?;
+    log::debug!("main_module {}", self.main_module);
+
+    if self.ps.options.compat() {
+      // TODO(bartlomieju): fix me
+      assert_eq!(self.main_module.scheme(), "file");
+
+      // Set up Node globals
+      self.worker.execute_side_module(&compat::GLOBAL_URL).await?;
+      // And `module` module that we'll use for checking which
+      // loader to use and potentially load CJS module with.
+      // This allows to skip permission check for `--allow-net`
+      // which would otherwise be requested by dynamically importing
+      // this file.
+      self.worker.execute_side_module(&compat::MODULE_URL).await?;
+
+      let use_esm_loader =
+        compat::check_if_should_use_esm_loader(&self.main_module)?;
+
+      if use_esm_loader {
+        // ES module execution in Node compatiblity mode
+        self.worker.execute_main_module(&self.main_module).await?;
+      } else {
+        // CJS module execution in Node compatiblity mode
+        compat::load_cjs_module(
+          &mut self.worker.js_runtime,
+          &self
+            .main_module
+            .to_file_path()
+            .unwrap()
+            .display()
+            .to_string(),
+          true,
+        )?;
+      }
+    } else {
+      // Regular ES module execution
+      self.worker.execute_main_module(&self.main_module).await?;
+    }
+
+    self.worker.dispatch_load_event(&located_script_name!())?;
+
+    loop {
+      self
+        .worker
+        .run_event_loop(maybe_coverage_collector.is_none())
+        .await?;
+      if !self
+        .worker
+        .dispatch_beforeunload_event(&located_script_name!())?
+      {
+        break;
+      }
+    }
+
+    self.worker.dispatch_unload_event(&located_script_name!())?;
+
+    if let Some(coverage_collector) = maybe_coverage_collector.as_mut() {
+      self
+        .worker
+        .with_event_loop(coverage_collector.stop_collecting().boxed_local())
+        .await?;
+    }
+
+    Ok(self.worker.get_exit_code())
+  }
+
+  pub async fn run_for_watcher(self) -> Result<(), AnyError> {
+    /// The FileWatcherModuleExecutor provides module execution with safe dispatching of life-cycle events by tracking the
+    /// state of any pending events and emitting accordingly on drop in the case of a future
+    /// cancellation.
+    struct FileWatcherModuleExecutor {
+      worker: MainWorker,
+      pending_unload: bool,
+      ps: ProcState,
+    }
+
+    impl FileWatcherModuleExecutor {
+      pub fn new(
+        worker: MainWorker,
+        ps: ProcState,
+      ) -> FileWatcherModuleExecutor {
+        FileWatcherModuleExecutor {
+          worker,
+          pending_unload: false,
+          ps,
+        }
+      }
+
+      /// Execute the given main module emitting load and unload events before and after execution
+      /// respectively.
+      pub async fn execute(
+        &mut self,
+        main_module: &ModuleSpecifier,
+      ) -> Result<(), AnyError> {
+        if self.ps.options.compat() {
+          self.worker.execute_side_module(&compat::GLOBAL_URL).await?;
+        }
+        self.worker.execute_main_module(main_module).await?;
+        self.worker.dispatch_load_event(&located_script_name!())?;
+        self.pending_unload = true;
+
+        let result = loop {
+          let result = self.worker.run_event_loop(false).await;
+          if !self
+            .worker
+            .dispatch_beforeunload_event(&located_script_name!())?
+          {
+            break result;
+          }
+        };
+        self.pending_unload = false;
+
+        if let Err(err) = result {
+          return Err(err);
+        }
+
+        self.worker.dispatch_unload_event(&located_script_name!())?;
+
+        Ok(())
+      }
+    }
+
+    impl Drop for FileWatcherModuleExecutor {
+      fn drop(&mut self) {
+        if self.pending_unload {
+          self
+            .worker
+            .dispatch_unload_event(&located_script_name!())
+            .unwrap();
+        }
+      }
+    }
+
+    let mut executor = FileWatcherModuleExecutor::new(self.worker, self.ps);
+    executor.execute(&self.main_module).await
+  }
+
+  pub async fn run_test_specifier(
+    &mut self,
+    mode: TestMode,
+  ) -> Result<(), AnyError> {
+    self.worker.js_runtime.execute_script(
+      &located_script_name!(),
+      r#"Deno[Deno.internal].enableTestAndBench()"#,
+    )?;
+
+    // Enable op call tracing in core to enable better debugging of op sanitizer
+    // failures.
+    if self.ps.options.trace_ops() {
+      self
+        .worker
+        .js_runtime
+        .execute_script(
+          &located_script_name!(),
+          "Deno.core.enableOpCallTracing();",
+        )
+        .unwrap();
+    }
+
+    let mut maybe_coverage_collector =
+      self.maybe_setup_coverage_collector().await?;
+
+    // We only execute the specifier as a module if it is tagged with TestMode::Module or
+    // TestMode::Both.
+    if mode != TestMode::Documentation {
+      if self.ps.options.compat() {
+        self.worker.execute_side_module(&compat::GLOBAL_URL).await?;
+        self.worker.execute_side_module(&compat::MODULE_URL).await?;
+
+        let use_esm_loader =
+          compat::check_if_should_use_esm_loader(&self.main_module)?;
+
+        if use_esm_loader {
+          self.worker.execute_side_module(&self.main_module).await?;
+        } else {
+          compat::load_cjs_module(
+            &mut self.worker.js_runtime,
+            &self
+              .main_module
+              .to_file_path()
+              .unwrap()
+              .display()
+              .to_string(),
+            false,
+          )?;
+          self.worker.run_event_loop(false).await?;
+        }
+      } else {
+        // We execute the module module as a side module so that import.meta.main is not set.
+        self.worker.execute_side_module(&self.main_module).await?;
+      }
+    }
+
+    self.worker.dispatch_load_event(&located_script_name!())?;
+
+    let test_result = self.worker.js_runtime.execute_script(
+      &located_script_name!(),
+      &format!(
+        r#"Deno[Deno.internal].runTests({})"#,
+        json!({ "shuffle": self.ps.options.shuffle_tests() }),
+      ),
+    )?;
+
+    self.worker.js_runtime.resolve_value(test_result).await?;
+
+    loop {
+      if !self
+        .worker
+        .dispatch_beforeunload_event(&located_script_name!())?
+      {
+        break;
+      }
+      self.worker.run_event_loop(false).await?;
+    }
+
+    self.worker.dispatch_unload_event(&located_script_name!())?;
+
+    if let Some(coverage_collector) = maybe_coverage_collector.as_mut() {
+      self
+        .worker
+        .with_event_loop(coverage_collector.stop_collecting().boxed_local())
+        .await?;
+    }
+    Ok(())
+  }
+
+  pub async fn run_lsp_test_specifier(
+    &mut self,
+    mode: TestMode,
+  ) -> Result<(), AnyError> {
+    self.worker.js_runtime.execute_script(
+      &located_script_name!(),
+      r#"Deno[Deno.internal].enableTestAndBench()"#,
+    )?;
+
+    self
+      .worker
+      .execute_script(
+        &located_script_name!(),
+        "Deno.core.enableOpCallTracing();",
+      )
+      .unwrap();
+
+    if mode != TestMode::Documentation {
+      self.worker.execute_side_module(&self.main_module).await?;
+    }
+
+    self.worker.dispatch_load_event(&located_script_name!())?;
+
+    let test_result = self.worker.js_runtime.execute_script(
+      &located_script_name!(),
+      r#"Deno[Deno.internal].runTests()"#,
+    )?;
+
+    self.worker.js_runtime.resolve_value(test_result).await?;
+
+    loop {
+      if !self
+        .worker
+        .dispatch_beforeunload_event(&located_script_name!())?
+      {
+        break;
+      }
+      self.worker.run_event_loop(false).await?;
+    }
+    self.worker.dispatch_unload_event(&located_script_name!())?;
+    Ok(())
+  }
+
+  pub async fn run_bench_specifier(&mut self) -> Result<(), AnyError> {
+    self.worker.js_runtime.execute_script(
+      &located_script_name!(),
+      r#"Deno[Deno.internal].enableTestAndBench()"#,
+    )?;
+
+    if self.ps.options.compat() {
+      self.worker.execute_side_module(&compat::GLOBAL_URL).await?;
+      self.worker.execute_side_module(&compat::MODULE_URL).await?;
+
+      let use_esm_loader =
+        compat::check_if_should_use_esm_loader(&self.main_module)?;
+
+      if use_esm_loader {
+        self.worker.execute_side_module(&self.main_module).await?;
+      } else {
+        compat::load_cjs_module(
+          &mut self.worker.js_runtime,
+          &self
+            .main_module
+            .to_file_path()
+            .unwrap()
+            .display()
+            .to_string(),
+          false,
+        )?;
+        self.worker.run_event_loop(false).await?;
+      }
+    } else {
+      // We execute the module module as a side module so that import.meta.main is not set.
+      self.worker.execute_side_module(&self.main_module).await?;
+    }
+
+    self.worker.dispatch_load_event(&located_script_name!())?;
+
+    let bench_result = self.worker.js_runtime.execute_script(
+      &located_script_name!(),
+      r#"Deno[Deno.internal].runBenchmarks()"#,
+    )?;
+
+    self.worker.js_runtime.resolve_value(bench_result).await?;
+
+    loop {
+      if !self
+        .worker
+        .dispatch_beforeunload_event(&located_script_name!())?
+      {
+        break;
+      }
+      self.worker.run_event_loop(false).await?;
+    }
+    self.worker.dispatch_unload_event(&located_script_name!())?;
+    Ok(())
+  }
+
+  async fn maybe_setup_coverage_collector(
+    &mut self,
+  ) -> Result<Option<CoverageCollector>, AnyError> {
+    if let Some(ref coverage_dir) = self.ps.coverage_dir {
+      let session = self.worker.create_inspector_session().await;
+
+      let coverage_dir = PathBuf::from(coverage_dir);
+      let mut coverage_collector =
+        tools::coverage::CoverageCollector::new(coverage_dir, session);
+      self
+        .worker
+        .with_event_loop(coverage_collector.start_collecting().boxed_local())
+        .await?;
+      Ok(Some(coverage_collector))
+    } else {
+      Ok(None)
+    }
+  }
+}
+
+pub fn create_main_worker(
+  ps: &ProcState,
+  main_module: ModuleSpecifier,
+  permissions: Permissions,
+  mut custom_extensions: Vec<Extension>,
+  stdio: deno_runtime::ops::io::Stdio,
+) -> CliMainWorker {
+  let module_loader = CliModuleLoader::new(ps.clone());
+
+  let maybe_inspector_server = ps.maybe_inspector_server.clone();
+  let should_break_on_first_statement = ps.options.inspect_brk().is_some();
+
+  let create_web_worker_cb =
+    create_web_worker_callback(ps.clone(), stdio.clone());
+  let web_worker_preload_module_cb =
+    create_web_worker_preload_module_callback(ps.clone());
+
+  let maybe_storage_key = ps.options.resolve_storage_key(&main_module);
+  let origin_storage_dir = maybe_storage_key.map(|key| {
+    ps.dir
+      .root
+      // TODO(@crowlKats): change to origin_data for 2.0
+      .join("location_data")
+      .join(checksum::gen(&[key.as_bytes()]))
+  });
+
+  let mut extensions = ops::cli_exts(ps.clone());
+  extensions.append(&mut custom_extensions);
+
+  let options = WorkerOptions {
+    bootstrap: BootstrapOptions {
+      args: ps.options.argv().clone(),
+      cpu_count: std::thread::available_parallelism()
+        .map(|p| p.get())
+        .unwrap_or(1),
+      debug_flag: ps
+        .options
+        .log_level()
+        .map_or(false, |l| l == log::Level::Debug),
+      enable_testing_features: ps.options.enable_testing_features(),
+      location: ps.options.location_flag().map(ToOwned::to_owned),
+      no_color: !colors::use_color(),
+      is_tty: colors::is_tty(),
+      runtime_version: version::deno(),
+      ts_version: version::TYPESCRIPT.to_string(),
+      unstable: ps.options.unstable(),
+      user_agent: version::get_user_agent(),
+    },
+    extensions,
+    unsafely_ignore_certificate_errors: ps
+      .options
+      .unsafely_ignore_certificate_errors()
+      .map(ToOwned::to_owned),
+    root_cert_store: Some(ps.root_cert_store.clone()),
+    seed: ps.options.seed(),
+    source_map_getter: Some(Box::new(module_loader.clone())),
+    format_js_error_fn: Some(Arc::new(format_js_error)),
+    create_web_worker_cb,
+    web_worker_preload_module_cb,
+    maybe_inspector_server,
+    should_break_on_first_statement,
+    module_loader,
+    get_error_class_fn: Some(&errors::get_error_class_name),
+    origin_storage_dir,
+    blob_store: ps.blob_store.clone(),
+    broadcast_channel: ps.broadcast_channel.clone(),
+    shared_array_buffer_store: Some(ps.shared_array_buffer_store.clone()),
+    compiled_wasm_module_store: Some(ps.compiled_wasm_module_store.clone()),
+    stdio,
+  };
+
+  let worker = MainWorker::bootstrap_from_options(
+    main_module.clone(),
+    permissions,
+    options,
+  );
+  CliMainWorker {
+    main_module,
+    worker,
+    ps: ps.clone(),
+  }
+}
+
+fn create_web_worker_preload_module_callback(
+  ps: ProcState,
+) -> Arc<PreloadModuleCb> {
+  let compat = ps.options.compat();
+
+  Arc::new(move |mut worker| {
+    let fut = async move {
+      if compat {
+        worker.execute_side_module(&compat::GLOBAL_URL).await?;
+        worker.execute_side_module(&compat::MODULE_URL).await?;
+      }
+
+      Ok(worker)
+    };
+    LocalFutureObj::new(Box::new(fut))
+  })
+}
+
+fn create_web_worker_callback(
+  ps: ProcState,
+  stdio: deno_runtime::ops::io::Stdio,
+) -> Arc<CreateWebWorkerCb> {
+  Arc::new(move |args| {
+    let maybe_inspector_server = ps.maybe_inspector_server.clone();
+
+    let module_loader = CliModuleLoader::new_for_worker(
+      ps.clone(),
+      args.parent_permissions.clone(),
+    );
+    let create_web_worker_cb =
+      create_web_worker_callback(ps.clone(), stdio.clone());
+    let preload_module_cb =
+      create_web_worker_preload_module_callback(ps.clone());
+
+    let extensions = ops::cli_exts(ps.clone());
+
+    let options = WebWorkerOptions {
+      bootstrap: BootstrapOptions {
+        args: ps.options.argv().clone(),
+        cpu_count: std::thread::available_parallelism()
+          .map(|p| p.get())
+          .unwrap_or(1),
+        debug_flag: ps
+          .options
+          .log_level()
+          .map_or(false, |l| l == log::Level::Debug),
+        enable_testing_features: ps.options.enable_testing_features(),
+        location: Some(args.main_module.clone()),
+        no_color: !colors::use_color(),
+        is_tty: colors::is_tty(),
+        runtime_version: version::deno(),
+        ts_version: version::TYPESCRIPT.to_string(),
+        unstable: ps.options.unstable(),
+        user_agent: version::get_user_agent(),
+      },
+      extensions,
+      unsafely_ignore_certificate_errors: ps
+        .options
+        .unsafely_ignore_certificate_errors()
+        .map(ToOwned::to_owned),
+      root_cert_store: Some(ps.root_cert_store.clone()),
+      seed: ps.options.seed(),
+      create_web_worker_cb,
+      preload_module_cb,
+      format_js_error_fn: Some(Arc::new(format_js_error)),
+      source_map_getter: Some(Box::new(module_loader.clone())),
+      module_loader,
+      worker_type: args.worker_type,
+      maybe_inspector_server,
+      get_error_class_fn: Some(&errors::get_error_class_name),
+      blob_store: ps.blob_store.clone(),
+      broadcast_channel: ps.broadcast_channel.clone(),
+      shared_array_buffer_store: Some(ps.shared_array_buffer_store.clone()),
+      compiled_wasm_module_store: Some(ps.compiled_wasm_module_store.clone()),
+      stdio: stdio.clone(),
+    };
+
+    WebWorker::bootstrap_from_options(
+      args.name,
+      args.permissions,
+      args.main_module,
+      args.worker_id,
+      options,
+    )
+  })
+}