- Represent strings internally in UTF-16 format, this makes it

runtime/vm/object_store.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_STORE_H_
 #define VM_OBJECT_STORE_H_
 
 #include "vm/object.h"
 
 namespace dart {
@@ skipping 99 matching lines @@
   RawClass* one_byte_string_class() const { return one_byte_string_class_; }
   void set_one_byte_string_class(const Class& value) {
     one_byte_string_class_ = value.raw();
   }
 
   RawClass* two_byte_string_class() const { return two_byte_string_class_; }
   void set_two_byte_string_class(const Class& value) {
     two_byte_string_class_ = value.raw();
   }
 
-  RawClass* four_byte_string_class() const { return four_byte_string_class_; }
-  void set_four_byte_string_class(const Class& value) {
-    four_byte_string_class_ = value.raw();
-  }
-
   RawClass* external_one_byte_string_class() const {
     return external_one_byte_string_class_;
   }
   void set_external_one_byte_string_class(const Class& value) {
     external_one_byte_string_class_ = value.raw();
   }
 
   RawClass* external_two_byte_string_class() const {
     return external_two_byte_string_class_;
   }
   void set_external_two_byte_string_class(const Class& value) {
     external_two_byte_string_class_ = value.raw();
   }
 
-  RawClass* external_four_byte_string_class() const {
-    return external_four_byte_string_class_;
-  }
-  void set_external_four_byte_string_class(const Class& value) {
-    external_four_byte_string_class_ = value.raw();
-  }
-
   RawType* bool_type() const { return bool_type_; }
   void set_bool_type(const Type& value) { bool_type_ = value.raw(); }
 
   RawClass* bool_class() const { return bool_class_; }
   void set_bool_class(const Class& value) { bool_class_ = value.raw(); }
 
   RawType* list_interface() const { return list_interface_; }
   void set_list_interface(const Type& value) {
     list_interface_ = value.raw();
   }
@@ skipping 331 matching lines @@
   RawClass* smi_class_;
   RawType* smi_type_;
   RawClass* mint_class_;
   RawType* mint_type_;
   RawClass* bigint_class_;
   RawClass* double_class_;
   RawType* double_type_;
   RawType* string_interface_;
   RawClass* one_byte_string_class_;
   RawClass* two_byte_string_class_;
-  RawClass* four_byte_string_class_;
   RawClass* external_one_byte_string_class_;
   RawClass* external_two_byte_string_class_;
-  RawClass* external_four_byte_string_class_;
   RawType* bool_type_;
   RawClass* bool_class_;
   RawType* list_interface_;
   RawClass* array_class_;
   RawClass* immutable_array_class_;
   RawClass* growable_object_array_class_;
   RawClass* int8_array_class_;
   RawClass* uint8_array_class_;
   RawClass* int16_array_class_;
   RawClass* uint16_array_class_;
@@ skipping 40 matching lines @@
   RawObject** to() { return reinterpret_cast<RawObject**>(&keyword_symbols_); }
 
   friend class SnapshotReader;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectStore);
 };
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_STORE_H_