libstdc++-v3/include/ext/pb_ds/detail/tree_trace_base.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 2, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  32
  33 // Permission to use, copy, modify, sell, and distribute this software
  34 // is hereby granted without fee, provided that the above copyright
  35 // notice appears in all copies, and that both that copyright notice
  36 // and this permission notice appear in supporting documentation. None
  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
  38 // representation about the suitability of this software for any
  39 // purpose. It is provided "as is" without express or implied
  40 // warranty.
  41
  42 /**
  43  * @file tree_trace_base.hpp
  44  * Contains tree-related policies.
  45  */
  46
  47 #ifndef PB_DS_TREE_TRACE_BASE_HPP
  48 #define PB_DS_TREE_TRACE_BASE_HPP
  49
  50 #ifdef PB_DS_TREE_TRACE
  51
  52 #include <ext/pb_ds/detail/basic_tree_policy/basic_tree_policy_base.hpp>
  53 #include <ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp>
  54
  55 namespace __gnu_pbds
  56 {
  57
  58   namespace detail
  59   {
  60
  61 #ifdef PB_DS_TREE_TRACE
  62
  63 #define PB_DS_CLASS_T_DEC                                               \
  64     template<                                                           \
  65                                                 class Const_Node_Iterator, \
  66                                                 class Node_Iterator,    \
  67                                                 class Cmp_Fn,           \
  68                                                 bool Node_Based,        \
  69                                                 class Allocator>
  70
  71 #define PB_DS_CLASS_C_DEC                                               \
  72     tree_trace_base<                                                    \
  73                                                 Const_Node_Iterator,    \
  74                                                 Node_Iterator,          \
  75                                                 Cmp_Fn,                 \
  76                                                 Node_Based,             \
  77                                                 Allocator>
  78
  79 #define PB_DS_BASE_C_DEC                                                \
  80     basic_tree_policy_base<                             \
  81                                                                 Const_Node_Iterator, \
  82                                                                 Node_Iterator, \
  83                                                                 Allocator>
  84
  85     template<typename Const_Node_Iterator,
  86              class Node_Iterator,
  87              class Cmp_Fn,
  88              bool Node_Based,
  89              class Allocator>
  90     class tree_trace_base : private PB_DS_BASE_C_DEC
  91     {
  92     public:
  93       void
  94       trace() const;
  95
  96     private:
  97       typedef PB_DS_BASE_C_DEC base_type;
  98
  99       typedef Const_Node_Iterator const_node_iterator;
 100
 101       typedef typename Allocator::size_type size_type;
 102
 103     private:
 104       void
 105       trace_node(const_node_iterator nd_it, size_type level) const;
 106
 107       virtual bool
 108       empty() const = 0;
 109
 110       virtual const_node_iterator
 111       node_begin() const = 0;
 112
 113       virtual const_node_iterator
 114       node_end() const = 0;
 115
 116       static void
 117       print_node_pointer(Const_Node_Iterator nd_it, integral_constant<int,true>);
 118
 119       static void
 120       print_node_pointer(Const_Node_Iterator nd_it, integral_constant<int,false>);
 121
 122       template<typename Metadata_>
 123       static void
 124       trace_it_metadata(Const_Node_Iterator nd_it, type_to_type<Metadata_>);
 125
 126       static void
 127       trace_it_metadata(Const_Node_Iterator, type_to_type<null_node_metadata>);
 128     };
 129
 130     PB_DS_CLASS_T_DEC
 131     void
 132     PB_DS_CLASS_C_DEC::
 133     trace() const
 134     {
 135       if (empty())
 136         return;
 137
 138       trace_node(node_begin(), 0);
 139     }
 140
 141     PB_DS_CLASS_T_DEC
 142     void
 143     PB_DS_CLASS_C_DEC::
 144     trace_node(const_node_iterator nd_it, size_type level) const
 145     {
 146       if (nd_it.get_r_child() != node_end())
 147         trace_node(nd_it.get_r_child(), level + 1);
 148
 149       for (size_type i = 0; i < level; ++i)
 150         std::cerr << ' ';
 151
 152       print_node_pointer(nd_it, integral_constant<int,Node_Based>());
 153       std::cerr << base_type::extract_key(*(*nd_it));
 154
 155       typedef
 156         type_to_type<
 157         typename const_node_iterator::metadata_type>
 158         m_type_ind_t;
 159
 160       trace_it_metadata(nd_it, m_type_ind_t());
 161
 162       std::cerr << std::endl;
 163
 164       if (nd_it.get_l_child() != node_end())
 165         trace_node(nd_it.get_l_child(), level + 1);
 166     }
 167
 168     PB_DS_CLASS_T_DEC
 169     template<typename Metadata_>
 170     void
 171     PB_DS_CLASS_C_DEC::
 172     trace_it_metadata(Const_Node_Iterator nd_it, type_to_type<Metadata_>)
 173     {
 174       std::cerr << " (" <<
 175         static_cast<unsigned long>(nd_it.get_metadata()) << ") ";
 176     }
 177
 178     PB_DS_CLASS_T_DEC
 179     void
 180     PB_DS_CLASS_C_DEC::
 181     trace_it_metadata(Const_Node_Iterator, type_to_type<null_node_metadata>)
 182     { }
 183
 184     PB_DS_CLASS_T_DEC
 185     void
 186     PB_DS_CLASS_C_DEC::
 187     print_node_pointer(Const_Node_Iterator nd_it, integral_constant<int,true>)
 188     {
 189       std::cerr << nd_it.m_p_nd << " ";
 190     }
 191
 192     PB_DS_CLASS_T_DEC
 193     void
 194     PB_DS_CLASS_C_DEC::
 195     print_node_pointer(Const_Node_Iterator nd_it, integral_constant<int,false>)
 196     {
 197       std::cerr <<* nd_it << " ";
 198     }
 199
 200 #undef PB_DS_CLASS_T_DEC
 201
 202 #undef PB_DS_CLASS_C_DEC
 203
 204 #undef PB_DS_BASE_C_DEC
 205
 206 #endif // #ifdef    PB_DS_TREE_TRACE
 207
 208   } // namespace detail
 209
 210 } // namespace __gnu_pbds
 211
 212 #endif // #ifdef PB_DS_TREE_TRACE
 213
 214 #endif // #ifndef PB_DS_TREE_TRACE_BASE_HPP
 215