[modules] Basic support of exports

src/objects-debug.cc

 // Copyright 2012 the V8 project 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 "src/objects.h"
 
 #include "src/bootstrapper.h"
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/field-type.h"
@@ skipping 148 matching lines @@
       JSWeakSet::cast(this)->JSWeakSetVerify();
       break;
     case JS_REGEXP_TYPE:
       JSRegExp::cast(this)->JSRegExpVerify();
       break;
     case FILLER_TYPE:
       break;
     case JS_PROXY_TYPE:
       JSProxy::cast(this)->JSProxyVerify();
       break;
+    case JS_MODULE_TYPE:
+      JSModule::cast(this)->JSModuleVerify();
+      break;
     case FOREIGN_TYPE:
       Foreign::cast(this)->ForeignVerify();
       break;
     case SHARED_FUNCTION_INFO_TYPE:
       SharedFunctionInfo::cast(this)->SharedFunctionInfoVerify();
       break;
     case JS_MESSAGE_OBJECT_TYPE:
       JSMessageObject::cast(this)->JSMessageObjectVerify();
       break;
     case JS_ARRAY_BUFFER_TYPE:
@@ skipping 645 matching lines @@
       CHECK(arr->get(JSRegExp::kIrregexpMaxRegisterCountIndex)->IsSmi());
       break;
     }
     default:
       CHECK_EQ(JSRegExp::NOT_COMPILED, TypeTag());
       CHECK(data()->IsUndefined(isolate));
       break;
   }
 }
 
+void JSModule::JSModuleVerify() { CHECK(IsJSModule()); }
 
 void JSProxy::JSProxyVerify() {
   CHECK(IsJSProxy());
   VerifyPointer(target());
   VerifyPointer(handler());
   Isolate* isolate = GetIsolate();
   CHECK_EQ(target()->IsCallable(), map()->is_callable());
   CHECK_EQ(target()->IsConstructor(), map()->is_constructor());
   CHECK(hash()->IsSmi() || hash()->IsUndefined(isolate));
   CHECK(map()->prototype()->IsNull(isolate));
@@ skipping 488 matching lines @@
 
   // Both are done at the same time.
   CHECK_EQ(new_it.done(), old_it.done());
 }
 
 
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8