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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 const_iterator.hpp | |
44 | * Contains an iterator class used for const ranging over the elements of the | |
45 | * table. | |
46 | */ | |
47 | ||
48 | // Const range-type iterator. | |
49 | class const_iterator_ : | |
50 | public const_point_iterator_ | |
51 | ||
52 | { | |
53 | ||
54 | public: | |
55 | ||
56 | // Category. | |
57 | typedef std::forward_iterator_tag iterator_category; | |
58 | ||
59 | // Difference type. | |
60 | typedef typename Allocator::difference_type difference_type; | |
61 | ||
62 | // Iterator's value type. | |
63 | typedef value_type_ value_type; | |
64 | ||
65 | // Iterator's pointer type. | |
66 | typedef pointer_ pointer; | |
67 | ||
68 | // Iterator's const pointer type. | |
69 | typedef const_pointer_ const_pointer; | |
70 | ||
71 | // Iterator's reference type. | |
72 | typedef reference_ reference; | |
73 | ||
74 | // Iterator's const reference type. | |
75 | typedef const_reference_ const_reference; | |
76 | ||
77 | public: | |
78 | ||
79 | // Default constructor. | |
80 | inline | |
81 | const_iterator_() | |
82 | ||
83 | : m_p_tbl(NULL) | |
84 | { } | |
85 | ||
86 | // Increments. | |
87 | inline const_iterator_& | |
88 | operator++() | |
89 | { | |
90 | m_p_tbl->inc_it_state(base_type::m_p_value, m_pos); | |
91 | ||
92 | return (*this); | |
93 | } | |
94 | ||
95 | // Increments. | |
96 | inline const_iterator_ | |
97 | operator++(int) | |
98 | { | |
99 | const_iterator_ ret =* this; | |
100 | ||
101 | m_p_tbl->inc_it_state(base_type::m_p_value, m_pos); | |
102 | ||
103 | return (ret); | |
104 | } | |
105 | ||
106 | protected: | |
107 | ||
108 | typedef const_point_iterator_ base_type; | |
109 | ||
110 | protected: | |
111 | ||
112 | /** | |
113 | * Constructor used by the table to initiate the generalized | |
114 | * pointer and position (e.g., this is called from within a find() | |
115 | * of a table. | |
116 | * */ | |
117 | inline | |
118 | const_iterator_(const_pointer_ p_value, PB_DS_GEN_POS pos, const PB_DS_CLASS_C_DEC* p_tbl) : const_point_iterator_(p_value), | |
119 | m_p_tbl(p_tbl), | |
120 | m_pos(pos) | |
121 | { } | |
122 | ||
123 | protected: | |
124 | ||
125 | /** | |
126 | * Pointer to the table object which created the iterator (used for | |
127 | * incrementing its position. | |
128 | * */ | |
129 | const PB_DS_CLASS_C_DEC* m_p_tbl; | |
130 | ||
131 | PB_DS_GEN_POS m_pos; | |
132 | ||
133 | friend class PB_DS_CLASS_C_DEC; | |
134 | }; | |
135 |