New APIs for external byte arrays

runtime/vm/raw_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_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 #include "vm/token.h"
@@ skipping 322 matching lines @@
   // Class Id predicates.
   static bool IsErrorClassId(intptr_t index);
   static bool IsNumberClassId(intptr_t index);
   static bool IsIntegerClassId(intptr_t index);
   static bool IsStringClassId(intptr_t index);
   static bool IsOneByteStringClassId(intptr_t index);
   static bool IsTwoByteStringClassId(intptr_t index);
   static bool IsExternalStringClassId(intptr_t index);
   static bool IsBuiltinListClassId(intptr_t index);
   static bool IsByteArrayClassId(intptr_t index);
+  static bool IsExternalByteArrayClassId(intptr_t index);
 
  protected:
   uword tags_;  // Various object tags (bits).
 
  private:
   class FreeBit : public BitField<bool, kFreeBit, 1> {};
 
   class MarkBit : public BitField<bool, kMarkBit, 1> {};
 
   class WatchedBit : public BitField<bool, kWatchedBit, 1> {};
@@ skipping 1251 matching lines @@
          kExternalInt32ArrayCid == kByteArrayCid + 15 &&
          kExternalUint32ArrayCid == kByteArrayCid + 16 &&
          kExternalInt64ArrayCid == kByteArrayCid + 17 &&
          kExternalUint64ArrayCid == kByteArrayCid + 18 &&
          kExternalFloat32ArrayCid == kByteArrayCid + 19 &&
          kExternalFloat64ArrayCid == kByteArrayCid + 20 &&
          kStacktraceCid == kByteArrayCid + 21);
   return (index >= kByteArrayCid && index <= kExternalFloat64ArrayCid);
 }
 
+inline bool RawObject::IsExternalByteArrayClassId(intptr_t index) {
+  // Make sure this function is updated when new ByteArray types are added.
+  ASSERT(kExternalUint8ArrayCid == kExternalInt8ArrayCid + 1 &&
+         kExternalInt16ArrayCid == kExternalInt8ArrayCid + 2 &&
+         kExternalUint16ArrayCid == kExternalInt8ArrayCid + 3 &&
+         kExternalInt32ArrayCid == kExternalInt8ArrayCid + 4 &&
+         kExternalUint32ArrayCid == kExternalInt8ArrayCid + 5 &&
+         kExternalInt64ArrayCid == kExternalInt8ArrayCid + 6 &&
+         kExternalUint64ArrayCid == kExternalInt8ArrayCid + 7 &&
+         kExternalFloat32ArrayCid == kExternalInt8ArrayCid + 8 &&
+         kExternalFloat64ArrayCid == kExternalInt8ArrayCid + 9 &&
+         kStacktraceCid == kExternalInt8ArrayCid + 10);
+  return (index >= kExternalInt8ArrayCid && index <= kExternalFloat64ArrayCid);
+}
+
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_