source/libr2c2/blockallocator.h

   1 #ifndef LIBR2C2_BLOCKALLOCATOR_H_
   2 #define LIBR2C2_BLOCKALLOCATOR_H_
   3
   4 #include <list>
   5 #include <msp/datafile/objectloader.h>
   6 #include "block.h"
   7 #include "blockiter.h"
   8
   9 namespace R2C2 {
  10
  11 class Train;
  12
  13 class BlockAllocator
  14 {
  15 public:
  16         class Loader: public Msp::DataFile::ObjectLoader<BlockAllocator>
  17         {
  18         private:
  19                 Block *prev_block;
  20                 bool valid;
  21
  22         public:
  23                 Loader(BlockAllocator &);
  24
  25         private:
  26                 void block(unsigned);
  27                 void hint(unsigned);
  28         };
  29
  30 private:
  31         typedef std::list<BlockIter> BlockList;
  32
  33         Train &train;
  34         BlockList blocks;
  35         BlockList::iterator cur_blocks_end;
  36         Block *pending_block;
  37         const Block *stop_at_block;
  38         bool reserving;
  39
  40 public:
  41         BlockAllocator(Train &);
  42
  43         void start_from(const BlockIter &);
  44         void clear();
  45         bool empty() const { return blocks.empty(); }
  46         void stop_at(const Block *);
  47
  48         const BlockIter &first() const;
  49         const BlockIter &last() const;
  50         const BlockIter &last_current() const;
  51
  52         int get_entry_to_block(const Block &) const;
  53
  54         void reserve_more();
  55         void release_until(const Block &);
  56         bool release_from(const Block &);
  57         void release_noncurrent();
  58 private:
  59         void release_blocks(const BlockList::iterator &, const BlockList::iterator &);
  60 public:
  61         void reverse();
  62
  63 private:
  64         void turnout_path_changed(Track &);
  65         void block_reserved(Block &, const Train *);
  66         void block_state_changed(Block &, Block::State);
  67
  68 public:
  69         void save(std::list<Msp::DataFile::Statement> &) const;
  70 };
  71
  72 } // namepsace R2C2
  73
  74 #endif