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/indra/llcommon/llstrider.h

https://bitbucket.org/lindenlab/viewer-beta/
C Header | 57 lines | 26 code | 7 blank | 24 comment | 0 complexity | 962bf091bdc27e1c4398b07df624f470 MD5 | raw file
Possible License(s): LGPL-2.1
  1. /**
  2. * @file llstrider.h
  3. *
  4. * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  5. * Second Life Viewer Source Code
  6. * Copyright (C) 2010, Linden Research, Inc.
  7. *
  8. * This library is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU Lesser General Public
  10. * License as published by the Free Software Foundation;
  11. * version 2.1 of the License only.
  12. *
  13. * This library is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16. * Lesser General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU Lesser General Public
  19. * License along with this library; if not, write to the Free Software
  20. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21. *
  22. * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
  23. * $/LicenseInfo$
  24. */
  25. #ifndef LL_LLSTRIDER_H
  26. #define LL_LLSTRIDER_H
  27. #include "stdtypes.h"
  28. template <class Object> class LLStrider
  29. {
  30. union
  31. {
  32. Object* mObjectp;
  33. U8* mBytep;
  34. };
  35. U32 mSkip;
  36. public:
  37. LLStrider() { mObjectp = NULL; mSkip = sizeof(Object); }
  38. ~LLStrider() { }
  39. const LLStrider<Object>& operator = (Object *first) { mObjectp = first; return *this;}
  40. void setStride (S32 skipBytes) { mSkip = (skipBytes ? skipBytes : sizeof(Object));}
  41. void skip(const U32 index) { mBytep += mSkip*index;}
  42. U32 getSkip() const { return mSkip; }
  43. Object* get() { return mObjectp; }
  44. Object* operator->() { return mObjectp; }
  45. Object& operator *() { return *mObjectp; }
  46. Object* operator ++(int) { Object* old = mObjectp; mBytep += mSkip; return old; }
  47. Object* operator +=(int i) { mBytep += mSkip*i; return mObjectp; }
  48. Object& operator[](U32 index) { return *(Object*)(mBytep + (mSkip * index)); }
  49. };
  50. #endif // LL_LLSTRIDER_H