[modules] Partial scope info support of modules

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 7ad59a1050b297ef76860197bb11d53d3c1b4ba7..61c99256303fde74ffa2d811cc3d781eebe30dd3 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -879,6 +879,7 @@ class LayoutDescriptor;
 class LiteralsArray;
 class LookupIterator;
 class FieldType;
+class ModuleInfo;
 class ObjectHashTable;
 class ObjectVisitor;
 class PropertyCell;
@@ -4313,6 +4314,8 @@ class ScopeInfo : public FixedArray {
   // Return the function_name if present.
   String* FunctionName();
 
+  ModuleInfo* ModuleDescriptorInfo();
+
   // Return the name of the given parameter.
   String* ParameterName(int var);
 
@@ -4366,6 +4369,12 @@ class ScopeInfo : public FixedArray {
                                     InitializationFlag* init_flag,
                                     MaybeAssignedFlag* maybe_assigned_flag);
 
+  // Lookup metadata of a MODULE-allocated variable.  Return a negative value if
+  // there is no module variable with the given name.
+  static int ModuleIndex(Handle<ScopeInfo> scope_info, Handle<String> name,
+                         VariableMode* mode, InitializationFlag* init_flag,
+                         MaybeAssignedFlag* maybe_assigned_flag);
+
   // Lookup the name of a certain context slot by its index.
   String* ContextSlotName(int slot_index);
 
@@ -4405,6 +4414,7 @@ class ScopeInfo : public FixedArray {
   // 3. The number of non-parameter variables allocated on the stack.
   // 4. The number of non-parameter and parameter variables allocated in the
   //    context.
+// XXX
 #define FOR_EACH_SCOPE_INFO_NUMERIC_FIELD(V) \
   V(Flags)                                   \
   V(ParameterCount)                          \
@@ -4469,6 +4479,7 @@ class ScopeInfo : public FixedArray {
   int ContextGlobalInfoEntriesIndex();
   int ReceiverEntryIndex();
   int FunctionNameEntryIndex();
+  int ModuleInfoEntryIndex();
 
   int Lookup(Handle<String> name, int start, int end, VariableMode* mode,
              VariableLocation* location, InitializationFlag* init_flag,