Add per-library cache of exported names

runtime/vm/object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 3511 matching lines @@
 
   // Library scope name dictionary.
   //
   // TODO(turnidge): The Lookup functions are not consistent in how
   // they deal with private names.  Go through and make them a bit
   // more regular.
   void AddClass(const Class& cls) const;
   void AddObject(const Object& obj, const String& name) const;
   void ReplaceObject(const Object& obj, const String& name) const;
   bool RemoveObject(const Object& obj, const String& name) const;
-  RawObject* LookupReExport(const String& name) const;
+  RawObject* LookupReExport(const String& name,
+                            ZoneGrowableArray<intptr_t>* visited = NULL) const;
   RawObject* LookupObjectAllowPrivate(const String& name) const;
   RawObject* LookupLocalObjectAllowPrivate(const String& name) const;
   RawObject* LookupLocalObject(const String& name) const;
   RawObject* LookupImportedObject(const String& name) const;
   RawClass* LookupClass(const String& name) const;
   RawClass* LookupClassAllowPrivate(const String& name) const;
   RawClass* LookupLocalClass(const String& name) const;
   RawField* LookupFieldAllowPrivate(const String& name) const;
   RawField* LookupLocalField(const String& name) const;
   RawFunction* LookupFunctionAllowPrivate(const String& name) const;
@@ skipping 32 matching lines @@
   }
   void set_toplevel_class(const Class& value) const;
 
   RawGrowableObjectArray* patch_classes() const {
     return raw_ptr()->patch_classes_;
   }
 
   // Library imports.
   RawArray* imports() const { return raw_ptr()->imports_; }
   RawArray* exports() const { return raw_ptr()->exports_; }
-  RawArray* exports2() const { return raw_ptr()->exports2_; }
   void AddImport(const Namespace& ns) const;
   intptr_t num_imports() const { return raw_ptr()->num_imports_; }
   RawNamespace* ImportAt(intptr_t index) const;
   RawLibrary* ImportLibraryAt(intptr_t index) const;
   bool ImportsCorelib() const;
 
   void DropDependencies() const;
 
   // Resolving native methods for script loaded in the library.
   Dart_NativeEntryResolver native_entry_resolver() const {
@@ skipping 105 matching lines @@
   void set_num_imports(intptr_t value) const;
   bool HasExports() const;
   RawArray* loaded_scripts() const { return raw_ptr()->loaded_scripts_; }
   RawGrowableObjectArray* metadata() const { return raw_ptr()->metadata_; }
   RawArray* dictionary() const { return raw_ptr()->dictionary_; }
   void InitClassDictionary() const;
 
   RawArray* resolved_names() const { return raw_ptr()->resolved_names_; }
   void InitResolvedNamesCache(intptr_t size,
                               SnapshotReader* reader = NULL) const;
-  void GrowResolvedNamesCache() const;
+  void AllocateExportedNamesCache() const;
+  void InitExportedNamesCache() const;
+  static void InvalidateExportedNamesCaches();
   bool LookupResolvedNamesCache(const String& name, Object* obj) const;
   void AddToResolvedNamesCache(const String& name, const Object& obj) const;
   void InvalidateResolvedName(const String& name) const;
   void InvalidateResolvedNamesCache() const;
 
+  RawArray* exported_names() const { return raw_ptr()->exported_names_; }
+  bool LookupExportedNamesCache(const String& name, Object* obj) const;
+  void AddToExportedNamesCache(const String& name, const Object& obj) const;
+
+
   void InitImportList() const;
   void GrowDictionary(const Array& dict, intptr_t dict_size) const;
   static RawLibrary* NewLibraryHelper(const String& url,
                                       bool import_core_lib);
   RawObject* LookupEntry(const String& name, intptr_t *index) const;
 
   static bool IsKeyUsed(intptr_t key);
   void AllocatePrivateKey() const;
 
   RawString* MakeMetadataName(const Object& obj) const;
   RawField* GetMetadataField(const String& metaname) const;
   void AddMetadata(const Object& owner,
                    const String& name,
                    TokenPosition token_pos) const;
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(Library, Object);
 
   friend class Bootstrap;
   friend class Class;
   friend class Debugger;
+  friend class Isolate;
   friend class DictionaryIterator;
   friend class Namespace;
   friend class Object;
 };
 
 
 // A Namespace contains the names in a library dictionary, filtered by
 // the show/hide combinators.
 class Namespace : public Object {
  public:
   RawLibrary* library() const { return raw_ptr()->library_; }
   RawArray* show_names() const { return raw_ptr()->show_names_; }
   RawArray* hide_names() const { return raw_ptr()->hide_names_; }
 
   void AddMetadata(const Object& owner, TokenPosition token_pos);
   RawObject* GetMetadata() const;
 
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawNamespace));
   }
 
   bool HidesName(const String& name) const;
-  RawObject* Lookup(const String& name) const;
+  RawObject* Lookup(const String& name,
+                    ZoneGrowableArray<intptr_t>* trail = NULL) const;
 
   static RawNamespace* New(const Library& library,
                            const Array& show_names,
                            const Array& hide_names);
 
  private:
   static RawNamespace* New();
 
   RawField* metadata_field() const { return raw_ptr()->metadata_field_; }
   void set_metadata_field(const Field& value) const;
@@ skipping 4685 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_