[modules] Add partial support for debug-scopes.

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 4668 matching lines @@
   int FunctionNameInfoIndex();
   int OuterScopeInfoIndex();
   int ModuleInfoIndex();
   int ModuleVariableCountIndex();
   int ModuleVariablesIndex();
 
   int Lookup(Handle<String> name, int start, int end, VariableMode* mode,
              VariableLocation* location, InitializationFlag* init_flag,
              MaybeAssignedFlag* maybe_assigned_flag);
 
+  // Get metadata of i-th MODULE-allocated variable, where 0 <= i <
+  // ModuleVariableCount.  The metadata is returned via out-arguments, which may
+  // be nullptr if the corresponding information is not requested
+  void ModuleVariable(int i, String** name, int* index,
+                      VariableMode* mode = nullptr,
+                      InitializationFlag* init_flag = nullptr,
+                      MaybeAssignedFlag* maybe_assigned_flag = nullptr);
+
   // Used for the function name variable for named function expressions, and for
   // the receiver.
   enum VariableAllocationInfo { NONE, STACK, CONTEXT, UNUSED };
 
   // Properties of scopes.
   class ScopeTypeField : public BitField<ScopeType, 0, 4> {};
   class CallsEvalField : public BitField<bool, ScopeTypeField::kNext, 1> {};
   STATIC_ASSERT(LANGUAGE_END == 2);
   class LanguageModeField
       : public BitField<LanguageMode, CallsEvalField::kNext, 1> {};
@@ skipping 47 matching lines @@
     kImportNameIndex,
     kModuleRequestIndex,
     kLength
   };
 };
 
 // ModuleInfo is to ModuleDescriptor what ScopeInfo is to Scope.
 class ModuleInfo : public FixedArray {
  public:
   DECLARE_CAST(ModuleInfo)
+
   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;
 
+  static Handle<ModuleInfoEntry> LookupRegularImport(Handle<ModuleInfo> info,
+                                                     Handle<String> local_name);
+
 #ifdef DEBUG
   inline bool Equals(ModuleInfo* other) const;
 #endif
 
  private:
   friend class Factory;
   enum {
     kModuleRequestsIndex,
     kSpecialExportsIndex,
     kRegularExportsIndex,
@@ skipping 6969 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_