Create bare-bones ScriptModule class

third_party/WebKit/Source/bindings/core/v8/ScriptModule.cpp

Index: third_party/WebKit/Source/bindings/core/v8/ScriptModule.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptModule.cpp b/third_party/WebKit/Source/bindings/core/v8/ScriptModule.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3642e50d29e06bf845e1c80fa82a44cdbdc378f8
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptModule.cpp
@@ -0,0 +1,56 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "bindings/core/v8/ScriptModule.h"
+
+#include "bindings/core/v8/V8Binding.h"
+
+namespace blink {
+
+ScriptModule::ScriptModule(v8::Isolate* isolate, v8::Local<v8::Module> module)
+    : m_module(SharedPersistent<v8::Module>::create(module, isolate)) {}
+
+ScriptModule::~ScriptModule() {}
+
+ScriptModule ScriptModule::compile(v8::Isolate* isolate,
+                                   const String& source,
+                                   const String& fileName) {
+  v8::TryCatch tryCatch(isolate);
+  tryCatch.SetVerbose(true);
+  v8::Local<v8::Module> module;
+  if (!v8Call(V8ScriptRunner::compileModule(isolate, source, fileName), module,
+              tryCatch)) {
+    // TODO(adamk): Signal failure somehow.
+    return ScriptModule(isolate, module);
+  }
+  return ScriptModule(isolate, module);
+}
+
+v8::MaybeLocal<v8::Module> dummyCallback(v8::Local<v8::Context> context,
+                                         v8::Local<v8::String> specifier,
+                                         v8::Local<v8::Module> referrer) {
+  return v8::MaybeLocal<v8::Module>();
+}
+
+bool ScriptModule::instantiate(ScriptState* scriptState) {
+  DCHECK(!isNull());
+  v8::Local<v8::Context> context = scriptState->context();
+  // TODO(adamk): pass in a real callback.
+  return m_module->newLocal(scriptState->isolate())
+      ->Instantiate(context, &dummyCallback);
+}
+
+void ScriptModule::evaluate(ScriptState* scriptState) {
+  v8::Isolate* isolate = scriptState->isolate();
+  v8::TryCatch tryCatch(isolate);
+  tryCatch.SetVerbose(true);
+  v8::Local<v8::Value> result;
+  if (!v8Call(V8ScriptRunner::evaluateModule(m_module->newLocal(isolate),
+                                             scriptState->context(), isolate),
+              result, tryCatch)) {
+    // TODO(adamk): report error
+  }
+}
+
+}  // namespace blink