src/checkpoints.cpp

   1 // Copyright (c) 2009-2017 The Bitcoin Core developers
   2 // Distributed under the MIT software license, see the accompanying
   3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include <checkpoints.h>
   6
   7 #include <chain.h>
   8 #include <chainparams.h>
   9 #include <reverse_iterator.h>
  10 #include <validation.h>
  11
  12 #include <stdint.h>
  13
  14
  15 namespace Checkpoints {
  16
  17     CBlockIndex* GetLastCheckpoint(const CCheckpointData& data)
  18     {
  19         const MapCheckpoints& checkpoints = data.mapCheckpoints;
  20
  21         for (const MapCheckpoints::value_type& i : reverse_iterate(checkpoints))
  22         {
  23             const uint256& hash = i.second;
  24             BlockMap::const_iterator t = mapBlockIndex.find(hash);
  25             if (t != mapBlockIndex.end())
  26                 return t->second;
  27         }
  28         return nullptr;
  29     }
  30
  31 } // namespace Checkpoints