Implement ModuleScript::RunScript()

third_party/WebKit/Source/core/dom/ModulatorImpl.cpp

Index: third_party/WebKit/Source/core/dom/ModulatorImpl.cpp
diff --git a/third_party/WebKit/Source/core/dom/ModulatorImpl.cpp b/third_party/WebKit/Source/core/dom/ModulatorImpl.cpp
index 33362773ea16c138c8d30fc7a425043ad4fda375..51f492a00337f8e95532c364e3590ae0b0a45f40 100644
--- a/third_party/WebKit/Source/core/dom/ModulatorImpl.cpp
+++ b/third_party/WebKit/Source/core/dom/ModulatorImpl.cpp
@@ -134,6 +134,33 @@ Vector<String> ModulatorImpl::ModuleRequestsFromScriptModule(
   return script_module.ModuleRequests(script_state_.Get());
 }
 
+void ModulatorImpl::ExecuteModule(const ModuleScript* module_script) {
+  // https://html.spec.whatwg.org/#run-a-module-script
+  ScriptState::Scope scope(script_state_.Get());
+
+  // 3. "If s's instantiation state is "errored", then report the exception
+  //     given by s's instantiation error for s and abort these steps."
+  if (module_script->InstantiationState() ==
+      ModuleInstantiationState::kErrored) {
+    v8::Isolate* isolate = script_state_->GetIsolate();
+    V8ThrowException::ThrowException(
+        isolate, module_script->CreateInstantiationError(isolate));
+    return;
+  }
+
+  // 4. "Assert: s's instantiation state is "instantiated" (and thus its
+  //     module record is not null)."
+  CHECK_EQ(module_script->InstantiationState(),
+           ModuleInstantiationState::kInstantiated);
+
+  // 5. "Let record be s's module record."
+  const ScriptModule& record = module_script->Record();
+  CHECK(!record.IsNull());
+
+  // 6.--9.?
+  record.Evaluate(script_state_.Get());
+}
+
 DEFINE_TRACE(ModulatorImpl) {
   Modulator::Trace(visitor);
   visitor->Trace(execution_context_);