1// -*- C++ -*-
2
3// Copyright (C) 2005 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
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
31
32// Permission to use, copy, modify, sell, and distribute this software
33// is hereby granted without fee, provided that the above copyright
34// notice appears in all copies, and that both that copyright notice and
35// this permission notice appear in supporting documentation. None of
36// the above authors, nor IBM Haifa Research Laboratories, make any
37// representation about the suitability of this software for any
38// purpose. It is provided "as is" without express or implied warranty.
39
40/**
41 * @file it_.hpp
42 * Contains an it_ for an adapter of mapping levels.
43 */
44
45#define PB_ASSOC_IT_C_DEC \
46	it_< \
47		It0, \
48		It1, \
49		Has_Data, \
50		Const>
51
52#define PB_ASSOC_OIT_T_DEC \
53	template<class OIt0, class OIt1, bool OHas_Data, bool OConst>
54
55#define PB_ASSOC_OIT_C_DEC \
56	it_< \
57		OIt0, \
58		OIt1, \
59		OHas_Data, \
60		OConst>
61
62template<class It0, class It1, bool Has_Data, bool Const>
63class it_
64{
65public:
66
67  typedef typename it_value_type_traits_t::value_type value_type;
68
69  typedef typename it_value_type_traits_t::reference reference;
70
71  typedef
72  typename it_value_type_traits_t::const_reference
73  const_reference;
74
75  typedef typename it_value_type_traits_t::pointer pointer;
76
77  typedef typename it_value_type_traits_t::const_pointer const_pointer;
78
79public:
80  inline
81  it_(It0 it0 = It0(),
82      It0 end_it0 = It0(),
83      It1 it1 = It1()) : m_it0(it0),
84			 m_end_it0(end_it0),
85			 m_it1(it1)
86  { }
87
88  inline
89  it_(const PB_ASSOC_IT_C_DEC& r_other) : m_it0(r_other.m_it0),
90					  m_end_it0(r_other.m_end_it0),
91					  m_it1(r_other.m_it1)
92  { }
93
94  PB_ASSOC_OIT_T_DEC
95  inline
96  it_(const PB_ASSOC_OIT_C_DEC& r_other) : m_it0(r_other.m_it0),
97					   m_end_it0(r_other.m_end_it0),
98					   m_it1(r_other.m_it1)
99  { }
100
101  inline bool
102  operator==(const PB_ASSOC_IT_C_DEC& r_other) const
103  {
104    if (m_it0 != r_other.m_it0)
105      return (false);
106
107    if (m_it0 == m_end_it0)
108      return (true);
109
110    return (m_it1 == r_other.m_it1);
111  }
112
113  inline bool
114  operator!=(const PB_ASSOC_IT_C_DEC& r_other) const
115  {
116    return (!operator==(r_other));
117  }
118
119  inline PB_ASSOC_IT_C_DEC&
120  operator++()
121  {
122    ++m_it1;
123
124    if (m_it1 == m_it0->second.end())
125      do
126	{
127	  ++m_it0;
128	}
129      while (m_it0 != m_end_it0&&  m_it0->second.empty());
130
131    if (m_it0 != m_end_it0&&  !m_it0->second.empty())
132      m_it1 = m_it0->second.begin();
133
134    return (*this);
135  }
136
137  inline PB_ASSOC_IT_C_DEC
138  operator++(int)
139  {
140    PB_ASSOC_IT_C_DEC ret =* this;
141
142    operator++();
143
144    return (ret);
145  }
146
147  inline const_pointer
148  operator->() const
149  {
150    it_value_type_traits_t::make_valid(m_value_type_holder, m_it0->first, * m_it1);
151
152    return (it_value_type_traits_t::recast(m_value_type_holder));
153  }
154
155  inline pointer
156  operator->()
157  {
158    // Tmp Ami PB_ASSOC_STATIC_ASSERT(non_const, !Const);
159
160    it_value_type_traits_t::make_valid(m_value_type_holder, m_it0->first, * m_it1);
161
162    return (it_value_type_traits_t::recast(m_value_type_holder));
163  }
164
165  inline const_reference
166  operator*() const
167  {
168    return (*operator->());
169  }
170
171  inline reference
172  operator*()
173  {
174    PB_ASSOC_STATIC_ASSERT(non_const, !Const);
175
176    return (*operator->());
177  }
178
179public:
180  mutable It0 m_it0;
181  It0 m_end_it0;
182
183  mutable It1 m_it1;
184
185  int_to_type<Has_Data> m_has_data;
186
187private:
188  mutable typename it_value_type_traits_t::value_type_holder m_value_type_holder;
189};
190
191#undef PB_ASSOC_IT_C_DEC
192
193#undef PB_ASSOC_OIT_T_DEC
194
195#undef PB_ASSOC_OIT_C_DEC
196
197