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

runtime/vm/raw_object.cc

 // 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.
 
 #include "vm/raw_object.h"
 
 #include "vm/class_table.h"
 #include "vm/freelist.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
@@ skipping 83 matching lines @@
         instance_size = OneByteString::InstanceSize(string_length);
         break;
       }
       case kTwoByteStringCid: {
         const RawTwoByteString* raw_string =
             reinterpret_cast<const RawTwoByteString*>(this);
         intptr_t string_length = Smi::Value(raw_string->ptr()->length_);
         instance_size = TwoByteString::InstanceSize(string_length);
         break;
       }
-      case kFourByteStringCid: {
-        const RawFourByteString* raw_string =
-            reinterpret_cast<const RawFourByteString*>(this);
-        intptr_t string_length = Smi::Value(raw_string->ptr()->length_);
-        instance_size = FourByteString::InstanceSize(string_length);
-        break;
-      }
       case kArrayCid:
       case kImmutableArrayCid: {
         const RawArray* raw_array = reinterpret_cast<const RawArray*>(this);
         intptr_t array_length = Smi::Value(raw_array->ptr()->length_);
         instance_size = Array::InstanceSize(array_length);
         break;
       }
       case kInt8ArrayCid: {
         const RawInt8Array* raw_byte_array =
             reinterpret_cast<const RawInt8Array*>(this);
@@ skipping 560 matching lines @@
 
 
 intptr_t RawTwoByteString::VisitTwoByteStringPointers(
     RawTwoByteString* raw_obj, ObjectPointerVisitor* visitor) {
   intptr_t length = Smi::Value(raw_obj->ptr()->length_);
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return TwoByteString::InstanceSize(length);
 }
 
 
-intptr_t RawFourByteString::VisitFourByteStringPointers(
-    RawFourByteString* raw_obj, ObjectPointerVisitor* visitor) {
-  intptr_t length = Smi::Value(raw_obj->ptr()->length_);
-  visitor->VisitPointers(raw_obj->from(), raw_obj->to());
-  return FourByteString::InstanceSize(length);
-}
-
-
 intptr_t RawExternalOneByteString::VisitExternalOneByteStringPointers(
     RawExternalOneByteString* raw_obj, ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return ExternalOneByteString::InstanceSize();
 }
 
 
 intptr_t RawExternalTwoByteString::VisitExternalTwoByteStringPointers(
     RawExternalTwoByteString* raw_obj, ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return ExternalTwoByteString::InstanceSize();
 }
 
 
-intptr_t RawExternalFourByteString::VisitExternalFourByteStringPointers(
-    RawExternalFourByteString* raw_obj, ObjectPointerVisitor* visitor) {
-  // Make sure that we got here with the tagged pointer as this.
-  ASSERT(raw_obj->IsHeapObject());
-  visitor->VisitPointers(raw_obj->from(), raw_obj->to());
-  return ExternalFourByteString::InstanceSize();
-}
-
-
 intptr_t RawBool::VisitBoolPointers(RawBool* raw_obj,
                                     ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   return Bool::InstanceSize();
 }
 
 
 intptr_t RawArray::VisitArrayPointers(RawArray* raw_obj,
                                       ObjectPointerVisitor* visitor) {
@@ skipping 243 matching lines @@
 
 intptr_t RawWeakProperty::VisitWeakPropertyPointers(
     RawWeakProperty* raw_obj, ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return WeakProperty::InstanceSize();
 }
 
 }  // namespace dart