Introduce SharedFunctionInfo::Iterator and Script::Iterator.

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 2505 matching lines @@
 int WeakFixedArray::last_used_index() const {
   return Smi::cast(FixedArray::cast(this)->get(kLastUsedIndexIndex))->value();
 }
 
 
 void WeakFixedArray::set_last_used_index(int index) {
   FixedArray::cast(this)->set(kLastUsedIndexIndex, Smi::FromInt(index));
 }
 
 
+template <class T>
+T* WeakFixedArray::Iterator::Next() {
+  if (list_ != NULL) {
+    // Assert that list did not change during iteration.
+    DCHECK_EQ(last_used_index_, list_->last_used_index());
+    while (index_ < list_->Length()) {
+      Object* item = list_->Get(index_++);
+      if (item != Empty()) return T::cast(item);
+    }
+    list_ = NULL;
+  }
+  return NULL;
+}
+
+
 int ArrayList::Length() {
   if (FixedArray::cast(this)->length() == 0) return 0;
   return Smi::cast(FixedArray::cast(this)->get(kLengthIndex))->value();
 }
 
 
 void ArrayList::SetLength(int length) {
   return FixedArray::cast(this)->set(kLengthIndex, Smi::FromInt(length));
 }
 
@@ skipping 5291 matching lines @@
 #undef READ_INT64_FIELD
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_