bootstrap: generate bootstrapper arguments in BuiltinLoader

src/api/environment.cc

@@ -456,11 +456,7 @@ MaybeLocal<Value> LoadEnvironment(
         env->set_main_utf16(std::move(main_utf16));
         Realm* realm = env->principal_realm();
 
-        // Arguments must match the parameters specified in
-        // BuiltinLoader::LookupAndCompile().
-        std::vector<Local<Value>> args = {realm->process_object(),
-                                          realm->builtin_module_require()};
-        return realm->ExecuteBootstrapper(name.c_str(), &args);
+        return realm->ExecuteBootstrapper(name.c_str());
       });
 }
 
@@ -699,19 +695,11 @@ Maybe<bool> InitializePrimordials(Local<Context> context) {
                                         nullptr};
 
   for (const char** module = context_files; *module != nullptr; module++) {
-    // Arguments must match the parameters specified in
-    // BuiltinLoader::LookupAndCompile().
     Local<Value> arguments[] = {exports, primordials};
-    MaybeLocal<Function> maybe_fn =
-        builtins::BuiltinLoader::LookupAndCompile(context, *module, nullptr);
-    Local<Function> fn;
-    if (!maybe_fn.ToLocal(&fn)) {
-      return Nothing<bool>();
-    }
-    MaybeLocal<Value> result =
-        fn->Call(context, Undefined(isolate), arraysize(arguments), arguments);
-    // Execution failed during context creation.
-    if (result.IsEmpty()) {
+    if (builtins::BuiltinLoader::CompileAndCall(
+            context, *module, arraysize(arguments), arguments, nullptr)
+            .IsEmpty()) {
+      // Execution failed during context creation.
       return Nothing<bool>();
     }
   }

src/node.cc

@@ -262,15 +262,7 @@ MaybeLocal<Value> StartExecution(Environment* env, const char* main_script_id) {
   CHECK_NOT_NULL(main_script_id);
   Realm* realm = env->principal_realm();
 
-  // Arguments must match the parameters specified in
-  // BuiltinLoader::LookupAndCompile().
-  std::vector<Local<Value>> arguments = {env->process_object(),
-                                         env->builtin_module_require(),
-                                         env->internal_binding_loader(),
-                                         env->primordials()};
-
-  return scope.EscapeMaybe(
-      realm->ExecuteBootstrapper(main_script_id, &arguments));
+  return scope.EscapeMaybe(realm->ExecuteBootstrapper(main_script_id));
 }
 
 MaybeLocal<Value> StartExecution(Environment* env, StartExecutionCallback cb) {

src/node_builtins.cc

@@ -26,6 +26,7 @@ using v8::ScriptOrigin;
 using v8::Set;
 using v8::SideEffectType;
 using v8::String;
+using v8::Undefined;
 using v8::Value;
 
 BuiltinLoader BuiltinLoader::instance_;
@@ -352,8 +353,12 @@ MaybeLocal<Function> BuiltinLoader::LookupAndCompile(
         FIXED_ONE_BYTE_STRING(isolate, "exports"),
         FIXED_ONE_BYTE_STRING(isolate, "primordials"),
     };
-  } else if (strncmp(id, "internal/main/", strlen("internal/main/")) == 0) {
-    // internal/main/*: process, require, internalBinding, primordials
+  } else if (strncmp(id, "internal/main/", strlen("internal/main/")) == 0 ||
+             strncmp(id,
+                     "internal/bootstrap/",
+                     strlen("internal/bootstrap/")) == 0) {
+    // internal/main/*, internal/bootstrap/*: process, require,
+    //                                        internalBinding, primordials
     parameters = {
         FIXED_ONE_BYTE_STRING(isolate, "process"),
         FIXED_ONE_BYTE_STRING(isolate, "require"),
@@ -366,16 +371,6 @@ MaybeLocal<Function> BuiltinLoader::LookupAndCompile(
         FIXED_ONE_BYTE_STRING(isolate, "process"),
         FIXED_ONE_BYTE_STRING(isolate, "require"),
     };
-  } else if (strncmp(id,
-                     "internal/bootstrap/",
-                     strlen("internal/bootstrap/")) == 0) {
-    // internal/bootstrap/*: process, require, internalBinding, primordials
-    parameters = {
-        FIXED_ONE_BYTE_STRING(isolate, "process"),
-        FIXED_ONE_BYTE_STRING(isolate, "require"),
-        FIXED_ONE_BYTE_STRING(isolate, "internalBinding"),
-        FIXED_ONE_BYTE_STRING(isolate, "primordials"),
-    };
   } else {
     // others: exports, require, module, process, internalBinding, primordials
     parameters = {
@@ -396,6 +391,76 @@ MaybeLocal<Function> BuiltinLoader::LookupAndCompile(
   return maybe;
 }
 
+MaybeLocal<Value> BuiltinLoader::CompileAndCall(Local<Context> context,
+                                                const char* id,
+                                                Realm* realm) {
+  Isolate* isolate = context->GetIsolate();
+  // Arguments must match the parameters specified in
+  // BuiltinLoader::LookupAndCompile().
+  std::vector<Local<Value>> arguments;
+  // Detects parameters of the scripts based on module ids.
+  // internal/bootstrap/loaders: process, getLinkedBinding,
+  //                             getInternalBinding, primordials
+  if (strcmp(id, "internal/bootstrap/loaders") == 0) {
+    Local<Value> get_linked_binding;
+    Local<Value> get_internal_binding;
+    if (!NewFunctionTemplate(isolate, binding::GetLinkedBinding)
+             ->GetFunction(context)
+             .ToLocal(&get_linked_binding) ||
+        !NewFunctionTemplate(isolate, binding::GetInternalBinding)
+             ->GetFunction(context)
+             .ToLocal(&get_internal_binding)) {
+      return MaybeLocal<Value>();
+    }
+    arguments = {realm->process_object(),
+                 get_linked_binding,
+                 get_internal_binding,
+                 realm->primordials()};
+  } else if (strncmp(id, "internal/main/", strlen("internal/main/")) == 0 ||
+             strncmp(id,
+                     "internal/bootstrap/",
+                     strlen("internal/bootstrap/")) == 0) {
+    // internal/main/*, internal/bootstrap/*: process, require,
+    //                                        internalBinding, primordials
+    arguments = {realm->process_object(),
+                 realm->builtin_module_require(),
+                 realm->internal_binding_loader(),
+                 realm->primordials()};
+  } else if (strncmp(id, "embedder_main_", strlen("embedder_main_")) == 0) {
+    // Synthetic embedder main scripts from LoadEnvironment(): process, require
+    arguments = {
+        realm->process_object(),
+        realm->builtin_module_require(),
+    };
+  } else {
+    // This should be invoked with the other CompileAndCall() methods, as
+    // we are unable to generate the arguments.
+    // Currently there are two cases:
+    // internal/per_context/*: the arguments are generated in
+    //                         InitializePrimordials()
+    // all the other cases: the arguments are generated in the JS-land loader.
+    UNREACHABLE();
+  }
+  return CompileAndCall(
+      context, id, arguments.size(), arguments.data(), realm->env());
+}
+
+MaybeLocal<Value> BuiltinLoader::CompileAndCall(Local<Context> context,
+                                                const char* id,
+                                                int argc,
+                                                Local<Value> argv[],
+                                                Environment* optional_env) {
+  // Arguments must match the parameters specified in
+  // BuiltinLoader::LookupAndCompile().
+  MaybeLocal<Function> maybe_fn = LookupAndCompile(context, id, optional_env);
+  Local<Function> fn;
+  if (!maybe_fn.ToLocal(&fn)) {
+    return MaybeLocal<Value>();
+  }
+  Local<Value> undefined = Undefined(context->GetIsolate());
+  return fn->Call(context, undefined, argc, argv);
+}
+
 bool BuiltinLoader::CompileAllBuiltins(Local<Context> context) {
   BuiltinLoader* loader = GetInstance();
   std::vector<std::string> ids = loader->GetBuiltinIds();

src/node_builtins.h

@@ -18,6 +18,8 @@ class PerProcessTest;
 namespace node {
 class SnapshotBuilder;
 class ExternalReferenceRegistry;
+class Realm;
+
 namespace builtins {
 
 using BuiltinSourceMap = std::map<std::string, UnionBytes>;
@@ -50,6 +52,16 @@ class NODE_EXTERN_PRIVATE BuiltinLoader {
       const char* id,
       Environment* optional_env);
 
+  static v8::MaybeLocal<v8::Value> CompileAndCall(
+      v8::Local<v8::Context> context,
+      const char* id,
+      int argc,
+      v8::Local<v8::Value> argv[],
+      Environment* optional_env);
+
+  static v8::MaybeLocal<v8::Value> CompileAndCall(
+      v8::Local<v8::Context> context, const char* id, Realm* realm);
+
   static v8::Local<v8::Object> GetSourceObject(v8::Local<v8::Context> context);
   // Returns config.gypi as a JSON string
   static v8::Local<v8::String> GetConfigString(v8::Isolate* isolate);

src/node_realm.cc

@@ -148,20 +148,10 @@ void Realm::DeserializeProperties(const RealmSerializeInfo* info) {
   DoneBootstrapping();
 }
 
-MaybeLocal<Value> Realm::ExecuteBootstrapper(
-    const char* id, std::vector<Local<Value>>* arguments) {
+MaybeLocal<Value> Realm::ExecuteBootstrapper(const char* id) {
   EscapableHandleScope scope(isolate());
   Local<Context> ctx = context();
-  MaybeLocal<Function> maybe_fn =
-      BuiltinLoader::LookupAndCompile(ctx, id, env());
-
-  Local<Function> fn;
-  if (!maybe_fn.ToLocal(&fn)) {
-    return MaybeLocal<Value>();
-  }
-
-  MaybeLocal<Value> result =
-      fn->Call(ctx, Undefined(isolate()), arguments->size(), arguments->data());
+  MaybeLocal<Value> result = BuiltinLoader::CompileAndCall(ctx, id, this);
 
   // If there was an error during bootstrap, it must be unrecoverable
   // (e.g. max call stack exceeded). Clear the stack so that the
@@ -179,21 +169,9 @@ MaybeLocal<Value> Realm::ExecuteBootstrapper(
 MaybeLocal<Value> Realm::BootstrapInternalLoaders() {
   EscapableHandleScope scope(isolate_);
 
-  // Arguments must match the parameters specified in
-  // BuiltinLoader::LookupAndCompile().
-  std::vector<Local<Value>> loaders_args = {
-      process_object(),
-      NewFunctionTemplate(isolate_, binding::GetLinkedBinding)
-          ->GetFunction(context())
-          .ToLocalChecked(),
-      NewFunctionTemplate(isolate_, binding::GetInternalBinding)
-          ->GetFunction(context())
-          .ToLocalChecked(),
-      primordials()};
-
   // Bootstrap internal loaders
   Local<Value> loader_exports;
-  if (!ExecuteBootstrapper("internal/bootstrap/loaders", &loaders_args)
+  if (!ExecuteBootstrapper("internal/bootstrap/loaders")
            .ToLocal(&loader_exports)) {
     return MaybeLocal<Value>();
   }
@@ -216,23 +194,14 @@ MaybeLocal<Value> Realm::BootstrapInternalLoaders() {
 MaybeLocal<Value> Realm::BootstrapNode() {
   EscapableHandleScope scope(isolate_);
 
-  // Arguments must match the parameters specified in
-  // BuiltinLoader::LookupAndCompile().
-  // process, require, internalBinding, primordials
-  std::vector<Local<Value>> node_args = {process_object(),
-                                         builtin_module_require(),
-                                         internal_binding_loader(),
-                                         primordials()};
-
-  MaybeLocal<Value> result =
-      ExecuteBootstrapper("internal/bootstrap/node", &node_args);
+  MaybeLocal<Value> result = ExecuteBootstrapper("internal/bootstrap/node");
 
   if (result.IsEmpty()) {
     return MaybeLocal<Value>();
   }
 
   if (!env_->no_browser_globals()) {
-    result = ExecuteBootstrapper("internal/bootstrap/browser", &node_args);
+    result = ExecuteBootstrapper("internal/bootstrap/browser");
 
     if (result.IsEmpty()) {
       return MaybeLocal<Value>();
@@ -243,7 +212,7 @@ MaybeLocal<Value> Realm::BootstrapNode() {
   auto thread_switch_id =
       env_->is_main_thread() ? "internal/bootstrap/switches/is_main_thread"
                              : "internal/bootstrap/switches/is_not_main_thread";
-  result = ExecuteBootstrapper(thread_switch_id, &node_args);
+  result = ExecuteBootstrapper(thread_switch_id);
 
   if (result.IsEmpty()) {
     return MaybeLocal<Value>();
@@ -253,7 +222,7 @@ MaybeLocal<Value> Realm::BootstrapNode() {
       env_->owns_process_state()
           ? "internal/bootstrap/switches/does_own_process_state"
           : "internal/bootstrap/switches/does_not_own_process_state";
-  result = ExecuteBootstrapper(process_state_switch_id, &node_args);
+  result = ExecuteBootstrapper(process_state_switch_id);
 
   if (result.IsEmpty()) {
     return MaybeLocal<Value>();

src/node_realm.h

@@ -60,8 +60,7 @@ class Realm : public MemoryRetainer {
   RealmSerializeInfo Serialize(v8::SnapshotCreator* creator);
   void DeserializeProperties(const RealmSerializeInfo* info);
 
-  v8::MaybeLocal<v8::Value> ExecuteBootstrapper(
-      const char* id, std::vector<v8::Local<v8::Value>>* arguments);
+  v8::MaybeLocal<v8::Value> ExecuteBootstrapper(const char* id);
   v8::MaybeLocal<v8::Value> BootstrapInternalLoaders();
   v8::MaybeLocal<v8::Value> BootstrapNode();
   v8::MaybeLocal<v8::Value> RunBootstrapping();