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.
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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
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26 // resulting executable to be covered by the GNU General Public
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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
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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 pb_ds
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::
trace() const133     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::
trace_node(const_node_iterator nd_it,size_type level) const144     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::
trace_it_metadata(Const_Node_Iterator nd_it,type_to_type<Metadata_>)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::
trace_it_metadata(Const_Node_Iterator,type_to_type<null_node_metadata>)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::
print_node_pointer(Const_Node_Iterator nd_it,integral_constant<int,true>)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::
print_node_pointer(Const_Node_Iterator nd_it,integral_constant<int,false>)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 pb_ds
211 
212 #endif // #ifdef PB_DS_TREE_TRACE
213 
214 #endif // #ifndef PB_DS_TREE_TRACE_BASE_HPP
215 
216