Implement external strings.

runtime/vm/object_store.h

 // Copyright (c) 2011, 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 24 matching lines @@
     kBoolInterface,
     kStringInterface,
     kObjectClass,
     kSmiClass,
     kMintClass,
     kBigintClass,
     kDoubleClass,
     kOneByteStringClass,
     kTwoByteStringClass,
     kFourByteStringClass,
+    kExternalOneByteStringClass,
+    kExternalTwoByteStringClass,
+    kExternalFourByteStringClass,
     kBoolClass,
     kArrayClass,
     kImmutableArrayClass,
     kUnhandledExceptionClass,
     kStacktraceClass,
     kJSRegExpClass,
     kMaxId,
     kInvalidIndex = -1,
   };
 
@@ skipping 63 matching lines @@
   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_interface() const { return bool_interface_; }
   void set_bool_interface(const Type& value) { bool_interface_ = value.raw(); }
 
   RawClass* bool_class() const { return bool_class_; }
   void set_bool_class(const Class& value) { bool_class_ = value.raw(); }
 
   RawClass* array_class() const { return array_class_; }
   void set_array_class(const Class& value) { array_class_ = value.raw(); }
   static intptr_t array_class_offset() {
     return OFFSET_OF(ObjectStore, array_class_);
@@ skipping 108 matching lines @@
   RawType* int_interface_;
   RawClass* smi_class_;
   RawClass* mint_class_;
   RawClass* bigint_class_;
   RawType* double_interface_;
   RawClass* double_class_;
   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_interface_;
   RawClass* bool_class_;
   RawClass* array_class_;
   RawClass* immutable_array_class_;
   RawClass* unhandled_exception_class_;
   RawClass* stacktrace_class_;
   RawClass* jsregexp_class_;
   RawBool* true_value_;
   RawBool* false_value_;
   RawArray* empty_array_;
   RawArray* symbol_table_;
   RawLibrary* core_library_;
   RawLibrary* core_impl_library_;
   RawLibrary* root_library_;
   RawLibrary* registered_libraries_;
   RawArray* pending_classes_;
   RawString* sticky_error_;
   RawContext* empty_context_;
   RawObject** to() { return reinterpret_cast<RawObject**>(&empty_context_); }
 
   friend class SnapshotReader;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectStore);
 };
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_STORE_H_