headers/private/debugger/ids/ObjectID.h

   1 /*
   2  * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef OBJECT_ID_H
   6 #define OBJECT_ID_H
   7
   8
   9 #include <Referenceable.h>
  10
  11
  12 class ObjectID : public BReferenceable {
  13 public:
  14                                                                 ObjectID();
  15         virtual                                         ~ObjectID();
  16
  17         inline  uint32                          HashValue() const;
  18
  19         virtual bool                            operator==(const ObjectID& other) const = 0;
  20         inline  bool                            operator!=(const ObjectID& other) const;
  21
  22 protected:
  23         virtual uint32                          ComputeHashValue() const = 0;
  24
  25 protected:
  26         mutable uint32                          fHashValue;
  27 };
  28
  29
  30 uint32
  31 ObjectID::HashValue() const
  32 {
  33         if (fHashValue == 0)
  34                 fHashValue = ComputeHashValue();
  35         return fHashValue;
  36 }
  37
  38
  39 bool
  40 ObjectID::operator!=(const ObjectID& other) const
  41 {
  42         return !(*this == other);
  43 }
  44
  45
  46 #endif  // OBJECT_ID_H