[modules] Make handling of module info's regular exports more robust.

src/objects.h

 // Copyright 2015 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 8088 matching lines @@
 
   static Handle<ModuleInfo> New(Isolate* isolate, Zone* zone,
                                 ModuleDescriptor* descr);
 
   inline FixedArray* module_requests() const;
   inline FixedArray* special_exports() const;
   inline FixedArray* regular_exports() const;
   inline FixedArray* namespace_imports() const;
   inline FixedArray* regular_imports() const;
 
+  // Accessors for [regular_exports].
+  int RegularExportCount() const;
+  String* RegularExportLocalName(int i) const;
+  int RegularExportCellIndex(int i) const;
+  FixedArray* RegularExportExportNames(int i) const;
+
   static Handle<ModuleInfoEntry> LookupRegularImport(Handle<ModuleInfo> info,
                                                      Handle<String> local_name);
 
 #ifdef DEBUG
   inline bool Equals(ModuleInfo* other) const;
 #endif
 
  private:
   friend class Factory;
+  friend class ModuleDescriptor;
   enum {
     kModuleRequestsIndex,
     kSpecialExportsIndex,
     kRegularExportsIndex,
     kNamespaceImportsIndex,
     kRegularImportsIndex,
     kLength
   };
+  enum {
+    kRegularExportLocalNameOffset,
+    kRegularExportCellIndexOffset,
+    kRegularExportExportNamesOffset,
+    kRegularExportLength
+  };
   DISALLOW_IMPLICIT_CONSTRUCTORS(ModuleInfo);
 };
 // When importing a module namespace (import * as foo from "bar"), a
 // JSModuleNamespace object (representing module "bar") is created and bound to
 // the declared variable (foo).  A module can have at most one namespace object.
 class JSModuleNamespace : public JSObject {
  public:
   DECLARE_CAST(JSModuleNamespace)
   DECLARE_PRINTER(JSModuleNamespace)
   DECLARE_VERIFIER(JSModuleNamespace)
@@ skipping 3636 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_