Line data    Source code

       1             : //
       2             : // Author: Vladimir Migashko <migashko@gmail.com>, (C) 2017
       3             : //
       4             : // Copyright: See COPYING file that comes with this distribution
       5             : //
       6             : 
       7             : #ifndef VSET_VSET_MEMORY_FSB_ASPECT_AD_OFF2POS_HPP
       8             : #define VSET_VSET_MEMORY_FSB_ASPECT_AD_OFF2POS_HPP
       9             : 
      10             : #include <vset/buffer/tags.hpp>
      11             : #include <vset/memory/fsb/tags.hpp>
      12             : #include <cstddef>
      13             : 
      14             : namespace vset { namespace memory{ namespace fsb{
      15             : 
      16             : struct ad_off2pos
      17             : {
      18             :   template<typename T>
      19             :   size_t operator()(T&, size_t offset) const
      20             :   {
      21             :     typedef typename T::aspect::template advice_cast<_value_type_>::type value_type;
      22             :     typedef typename T::aspect::template advice_cast<_chunk_type_>::type chunk_type;
      23             :     typedef typename T::aspect::template advice_cast<_chain_type_>::type chain_type;
      24             :     offset -= chain_type::head_size();
      25             :     offset -= ( offset/chunk_type::size() ) * chunk_type::head_size();
      26             :     offset -= chunk_type::head_size();
      27             :     return offset/sizeof(value_type);
      28             :   }
      29             : };
      30             : 
      31          31 : struct ad_off2pos_stub
      32             : {
      33             :   template<typename T>
      34      166254 :   size_t operator()(T&, size_t offset) const
      35             :   {
      36      166254 :     return offset;
      37             :   }
      38             : };
      39             : 
      40             : 
      41             : }}}
      42             : 
      43             : #endif