[modules] Basic support of exports

src/ast/modules.h

Index: src/ast/modules.h
diff --git a/src/ast/modules.h b/src/ast/modules.h
index 7e78ac2bad9927332d1ee64a5cc5dfa252d16c0d..5d6ffaf6fb5ef159538308957a24f10b6f3ccce2 100644
--- a/src/ast/modules.h
+++ b/src/ast/modules.h
@@ -5,6 +5,11 @@
 #ifndef V8_AST_MODULES_H_
 #define V8_AST_MODULES_H_
 
+#ifdef DEBUG
+// TODO: Remove before landing.
+#include "src/ast/ast-value-factory.h"
+#endif  // DEBUG
+
 #include "src/parsing/scanner.h"  // Only for Scanner::Location.
 #include "src/pending-compilation-error-handler.h"
 #include "src/zone-containers.h"
@@ -14,6 +19,7 @@ namespace internal {
 
 
 class AstRawString;
+class ModuleInfoEntry;
 
 
 class ModuleDescriptor : public ZoneObject {
@@ -80,6 +86,7 @@ class ModuleDescriptor : public ZoneObject {
     const AstRawString* import_name;
     const AstRawString* module_request;
 
+    // TODO(neis): Remove local_name component?
     explicit Entry(Scanner::Location loc)
         : location(loc),
           export_name(nullptr),
@@ -87,9 +94,27 @@ class ModuleDescriptor : public ZoneObject {
           import_name(nullptr),
           module_request(nullptr) {}
 
-    Handle<FixedArray> Serialize(Isolate* isolate) const;
+#ifdef DEBUG
+    // TODO: Remove before landing.
+    void Print() const {
+      PrintF("export name: ");
+      if (export_name != nullptr) {
+        PrintF("%.*s\n", export_name->length(), export_name->raw_data());
+      }
+      PrintF("local name: ");
+      if (local_name != nullptr) {
+        PrintF("%.*s\n", local_name->length(), local_name->raw_data());
+        // local_name->string()->ShortPrint();
+      }
+    }
+#endif  // DEBUG
+
+    // (De-)serialization support.
+    // Note that the location value is not preserved as it's only needed by the
+    // parser.  (A Deserialize'd entry has an invalid location.)
+    Handle<ModuleInfoEntry> Serialize(Isolate* isolate) const;
     static Entry* Deserialize(Isolate* isolate, AstValueFactory* avfactory,
-                              Handle<FixedArray> data);
+                              Handle<ModuleInfoEntry> entry);
   };
 
   // Empty imports and namespace imports.
@@ -112,6 +137,10 @@ class ModuleDescriptor : public ZoneObject {
     return regular_exports_;
   }
 
+#ifdef DEBUG
+  void Print() const;
+#endif  // DEBUG
+
   void AddRegularExport(Entry* entry) {
     DCHECK_NOT_NULL(entry->export_name);
     DCHECK_NOT_NULL(entry->local_name);