Add support for surrogates when serializing and deserializing for native ports

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 3717 matching lines @@
   static const intptr_t kMaxElements = kSmiMax / kTwoByteChar;
 
   class CodePointIterator : public ValueObject {
    public:
     explicit CodePointIterator(const String& str)
         : str_(str),
           index_(-1),
           ch_(-1) {
     }
 
-    int32_t Current() {
+    int32_t Current() const {
       ASSERT(index_ >= 0);
       ASSERT(index_ < str_.Length());
       return ch_;
     }
 
     bool Next();
 
+    void Reset() {

[cshapiro, 2012/11/30 02:49:08]

I would prefer that this functionality not be added until we have a client.

[Søren Gjesse, 2012/11/30 12:23:07]

Done.

+      index_ = -1;
+      ch_ = -1;
+    }
+
    private:
     const String& str_;
     intptr_t index_;
     int32_t ch_;
     DISALLOW_IMPLICIT_CONSTRUCTORS(CodePointIterator);
   };
 
   intptr_t Length() const { return Smi::Value(raw_ptr()->length_); }
   static intptr_t length_offset() { return OFFSET_OF(RawString, length_); }
 
@@ skipping 2219 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_