[WIP Prototype] ES6 https://html.spec.whatwg.org/#fetch-a-single-module-script implementation

third_party/WebKit/Source/core/dom/ModuleScript.h

 // 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.
 
 #ifndef ModuleScript_h
 #define ModuleScript_h
 
 #include "bindings/core/v8/ScriptModule.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/TraceWrapperV8Reference.h"
 #include "core/CoreExport.h"
 #include "core/dom/Modulator.h"
 #include "core/dom/Script.h"
 #include "platform/heap/Handle.h"
 #include "platform/loader/fetch/ResourceLoaderOptions.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/WebURLRequest.h"
 
 namespace blink {
 
+class ScriptModuleResolver;
+
 // https://html.spec.whatwg.org/multipage/webappapis.html#concept-module-script-instantiation-state
 enum class ModuleInstantiationState {
   kUninstantiated,
   kErrored,
   kInstantiated,
 };
 
 // ModuleScript is a model object for the "module script" spec concept.
 // https://html.spec.whatwg.org/multipage/webappapis.html#module-script
 class CORE_EXPORT ModuleScript final : public Script, public TraceWrapperBase {
  public:
   static ModuleScript* Create(
       Modulator* settings_object,
       ScriptModule record,
       const KURL& base_url,
       const String& nonce,
       ParserDisposition parser_state,
       WebURLRequest::FetchCredentialsMode credentials_mode) {
     return new ModuleScript(settings_object, record, base_url, nonce,
                             parser_state, credentials_mode);
   }
   ~ModuleScript() override = default;
 
-  ScriptModule& Record() { return record_; }
+  const ScriptModule& Record() const { return record_; }
   const KURL& BaseURL() const { return base_url_; }
 
   ModuleInstantiationState InstantiationState() const {
     return instantiation_state_;
   }
 
   // Implements Step 7.1 of:
   // https://html.spec.whatwg.org/multipage/webappapis.html#internal-module-script-graph-fetching-procedure
   void SetInstantiationErrorAndClearRecord(ScriptValue error);
   // Implements Step 7.2 of:
   // https://html.spec.whatwg.org/multipage/webappapis.html#internal-module-script-graph-fetching-procedure
   void SetInstantiationSuccess();
 
   ParserDisposition ParserState() const { return parser_state_; }
   WebURLRequest::FetchCredentialsMode CredentialsMode() const {
     return credentials_mode_;
   }
   const String& Nonce() const { return nonce_; }
 
+  v8::Local<v8::Value> CreateInstantiationError(v8::Isolate* isolate) const {
+    return instantiation_error_.NewLocal(isolate);
+  }
+
   DECLARE_TRACE();
   DECLARE_TRACE_WRAPPERS();
 
  private:
   ModuleScript(Modulator* settings_object,
                ScriptModule record,
                const KURL& base_url,
                const String& nonce,
                ParserDisposition parser_state,
                WebURLRequest::FetchCredentialsMode credentials_mode)
@@ skipping 41 matching lines @@
   // https://html.spec.whatwg.org/multipage/webappapis.html#concept-module-script-parser
   const ParserDisposition parser_state_;
 
   // https://html.spec.whatwg.org/multipage/webappapis.html#concept-module-script-credentials-mode
   const WebURLRequest::FetchCredentialsMode credentials_mode_;
 };
 
 }  // namespace blink
 
 #endif