[857] | 1 | //
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| 2 | // (C) Copyright Jeremy Siek 2000.
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| 3 | // Distributed under the Boost Software License, Version 1.0. (See
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| 4 | // accompanying file LICENSE_1_0.txt or copy at
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| 5 | // http://www.boost.org/LICENSE_1_0.txt)
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| 6 | //
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| 7 | // Revision History:
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| 8 | //
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| 9 | // 17 July 2001: Added const to some member functions. (Jeremy Siek)
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| 10 | // 05 May 2001: Removed static dummy_cons object. (Jeremy Siek)
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| 11 |
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| 12 | // See http://www.boost.org/libs/concept_check for documentation.
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| 13 |
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| 14 | #ifndef BOOST_CONCEPT_ARCHETYPES_HPP
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| 15 | #define BOOST_CONCEPT_ARCHETYPES_HPP
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| 16 |
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| 17 | #include <boost/config.hpp>
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| 18 | #include <boost/iterator.hpp>
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| 19 | #include <boost/mpl/identity.hpp>
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| 20 | #include <functional>
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| 21 |
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| 22 | namespace boost {
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| 23 |
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| 24 | //===========================================================================
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| 25 | // Basic Archetype Classes
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| 26 |
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| 27 | namespace detail {
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| 28 | class dummy_constructor { };
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| 29 | }
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| 30 |
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| 31 | // A type that models no concept. The template parameter
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| 32 | // is only there so that null_archetype types can be created
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| 33 | // that have different type.
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| 34 | template <class T = int>
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| 35 | class null_archetype {
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| 36 | private:
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| 37 | null_archetype() { }
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| 38 | null_archetype(const null_archetype&) { }
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| 39 | null_archetype& operator=(const null_archetype&) { return *this; }
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| 40 | public:
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| 41 | null_archetype(detail::dummy_constructor) { }
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| 42 | #ifndef __MWERKS__
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| 43 | template <class TT>
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| 44 | friend void dummy_friend(); // just to avoid warnings
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| 45 | #endif
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| 46 | };
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| 47 |
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| 48 | // This is a helper class that provides a way to get a reference to
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| 49 | // an object. The get() function will never be called at run-time
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| 50 | // (nothing in this file will) so this seemingly very bad function
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| 51 | // is really quite innocent. The name of this class needs to be
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| 52 | // changed.
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| 53 | template <class T>
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| 54 | class static_object
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| 55 | {
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| 56 | public:
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| 57 | static T& get()
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| 58 | {
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| 59 | #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
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| 60 | return *reinterpret_cast<T*>(0);
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| 61 | #else
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| 62 | static char d[sizeof(T)];
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| 63 | return *reinterpret_cast<T*>(d);
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| 64 | #endif
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| 65 | }
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| 66 | };
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| 67 |
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| 68 | template <class Base = null_archetype<> >
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| 69 | class default_constructible_archetype : public Base {
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| 70 | public:
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| 71 | default_constructible_archetype()
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| 72 | : Base(static_object<detail::dummy_constructor>::get()) { }
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| 73 | default_constructible_archetype(detail::dummy_constructor x) : Base(x) { }
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| 74 | };
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| 75 |
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| 76 | template <class Base = null_archetype<> >
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| 77 | class assignable_archetype : public Base {
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| 78 | assignable_archetype() { }
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| 79 | assignable_archetype(const assignable_archetype&) { }
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| 80 | public:
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| 81 | assignable_archetype& operator=(const assignable_archetype&) {
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| 82 | return *this;
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| 83 | }
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| 84 | assignable_archetype(detail::dummy_constructor x) : Base(x) { }
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| 85 | };
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| 86 |
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| 87 | template <class Base = null_archetype<> >
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| 88 | class copy_constructible_archetype : public Base {
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| 89 | public:
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| 90 | copy_constructible_archetype()
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| 91 | : Base(static_object<detail::dummy_constructor>::get()) { }
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| 92 | copy_constructible_archetype(const copy_constructible_archetype&)
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| 93 | : Base(static_object<detail::dummy_constructor>::get()) { }
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| 94 | copy_constructible_archetype(detail::dummy_constructor x) : Base(x) { }
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| 95 | };
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| 96 |
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| 97 | template <class Base = null_archetype<> >
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| 98 | class sgi_assignable_archetype : public Base {
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| 99 | public:
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| 100 | sgi_assignable_archetype(const sgi_assignable_archetype&)
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| 101 | : Base(static_object<detail::dummy_constructor>::get()) { }
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| 102 | sgi_assignable_archetype& operator=(const sgi_assignable_archetype&) {
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| 103 | return *this;
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| 104 | }
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| 105 | sgi_assignable_archetype(const detail::dummy_constructor& x) : Base(x) { }
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| 106 | };
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| 107 |
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| 108 | struct default_archetype_base {
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| 109 | default_archetype_base(detail::dummy_constructor) { }
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| 110 | };
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| 111 |
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| 112 | // Careful, don't use same type for T and Base. That results in the
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| 113 | // conversion operator being invalid. Since T is often
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| 114 | // null_archetype, can't use null_archetype for Base.
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| 115 | template <class T, class Base = default_archetype_base>
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| 116 | class convertible_to_archetype : public Base {
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| 117 | private:
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| 118 | convertible_to_archetype() { }
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| 119 | convertible_to_archetype(const convertible_to_archetype& ) { }
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| 120 | convertible_to_archetype& operator=(const convertible_to_archetype&)
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| 121 | { return *this; }
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| 122 | public:
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| 123 | convertible_to_archetype(detail::dummy_constructor x) : Base(x) { }
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| 124 | operator const T&() const { return static_object<T>::get(); }
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| 125 | };
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| 126 |
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| 127 | template <class T, class Base = default_archetype_base>
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| 128 | class convertible_from_archetype : public Base {
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| 129 | private:
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| 130 | convertible_from_archetype() { }
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| 131 | convertible_from_archetype(const convertible_from_archetype& ) { }
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| 132 | convertible_from_archetype& operator=(const convertible_from_archetype&)
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| 133 | { return *this; }
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| 134 | public:
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| 135 | convertible_from_archetype(detail::dummy_constructor x) : Base(x) { }
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| 136 | convertible_from_archetype(const T&) { }
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| 137 | convertible_from_archetype& operator=(const T&)
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| 138 | { return *this; }
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| 139 | };
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| 140 |
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| 141 | class boolean_archetype {
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| 142 | public:
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| 143 | boolean_archetype(const boolean_archetype&) { }
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| 144 | operator bool() const { return true; }
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| 145 | boolean_archetype(detail::dummy_constructor) { }
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| 146 | private:
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| 147 | boolean_archetype() { }
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| 148 | boolean_archetype& operator=(const boolean_archetype&) { return *this; }
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| 149 | };
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| 150 |
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| 151 | template <class Base = null_archetype<> >
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| 152 | class equality_comparable_archetype : public Base {
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| 153 | public:
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| 154 | equality_comparable_archetype(detail::dummy_constructor x) : Base(x) { }
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| 155 | };
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| 156 | template <class Base>
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| 157 | boolean_archetype
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| 158 | operator==(const equality_comparable_archetype<Base>&,
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| 159 | const equality_comparable_archetype<Base>&)
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| 160 | {
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| 161 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 162 | }
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| 163 | template <class Base>
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| 164 | boolean_archetype
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| 165 | operator!=(const equality_comparable_archetype<Base>&,
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| 166 | const equality_comparable_archetype<Base>&)
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| 167 | {
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| 168 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 169 | }
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| 170 |
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| 171 |
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| 172 | template <class Base = null_archetype<> >
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| 173 | class equality_comparable2_first_archetype : public Base {
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| 174 | public:
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| 175 | equality_comparable2_first_archetype(detail::dummy_constructor x)
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| 176 | : Base(x) { }
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| 177 | };
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| 178 | template <class Base = null_archetype<> >
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| 179 | class equality_comparable2_second_archetype : public Base {
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| 180 | public:
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| 181 | equality_comparable2_second_archetype(detail::dummy_constructor x)
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| 182 | : Base(x) { }
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| 183 | };
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| 184 | template <class Base1, class Base2>
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| 185 | boolean_archetype
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| 186 | operator==(const equality_comparable2_first_archetype<Base1>&,
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| 187 | const equality_comparable2_second_archetype<Base2>&)
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| 188 | {
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| 189 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 190 | }
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| 191 | template <class Base1, class Base2>
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| 192 | boolean_archetype
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| 193 | operator!=(const equality_comparable2_first_archetype<Base1>&,
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| 194 | const equality_comparable2_second_archetype<Base2>&)
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| 195 | {
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| 196 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 197 | }
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| 198 |
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| 199 |
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| 200 | template <class Base = null_archetype<> >
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| 201 | class less_than_comparable_archetype : public Base {
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| 202 | public:
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| 203 | less_than_comparable_archetype(detail::dummy_constructor x) : Base(x) { }
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| 204 | };
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| 205 | template <class Base>
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| 206 | boolean_archetype
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| 207 | operator<(const less_than_comparable_archetype<Base>&,
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| 208 | const less_than_comparable_archetype<Base>&)
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| 209 | {
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| 210 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 211 | }
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| 212 |
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| 213 |
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| 214 |
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| 215 | template <class Base = null_archetype<> >
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| 216 | class comparable_archetype : public Base {
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| 217 | public:
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| 218 | comparable_archetype(detail::dummy_constructor x) : Base(x) { }
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| 219 | };
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| 220 | template <class Base>
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| 221 | boolean_archetype
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| 222 | operator<(const comparable_archetype<Base>&,
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| 223 | const comparable_archetype<Base>&)
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| 224 | {
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| 225 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 226 | }
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| 227 | template <class Base>
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| 228 | boolean_archetype
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| 229 | operator<=(const comparable_archetype<Base>&,
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| 230 | const comparable_archetype<Base>&)
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| 231 | {
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| 232 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 233 | }
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| 234 | template <class Base>
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| 235 | boolean_archetype
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| 236 | operator>(const comparable_archetype<Base>&,
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| 237 | const comparable_archetype<Base>&)
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| 238 | {
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| 239 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 240 | }
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| 241 | template <class Base>
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| 242 | boolean_archetype
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| 243 | operator>=(const comparable_archetype<Base>&,
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| 244 | const comparable_archetype<Base>&)
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| 245 | {
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| 246 | return boolean_archetype(static_object<detail::dummy_constructor>::get());
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| 247 | }
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| 248 |
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| 249 |
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| 250 | // The purpose of the optags is so that one can specify
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| 251 | // exactly which types the operator< is defined between.
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| 252 | // This is useful for allowing the operations:
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| 253 | //
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| 254 | // A a; B b;
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| 255 | // a < b
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| 256 | // b < a
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| 257 | //
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| 258 | // without also allowing the combinations:
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| 259 | //
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| 260 | // a < a
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| 261 | // b < b
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| 262 | //
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| 263 | struct optag1 { };
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| 264 | struct optag2 { };
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| 265 | struct optag3 { };
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| 266 |
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| 267 | #define BOOST_DEFINE_BINARY_PREDICATE_ARCHETYPE(OP, NAME) \
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| 268 | template <class Base = null_archetype<>, class Tag = optag1 > \
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| 269 | class NAME##_first_archetype : public Base { \
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| 270 | public: \
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| 271 | NAME##_first_archetype(detail::dummy_constructor x) : Base(x) { } \
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| 272 | }; \
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| 273 | \
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| 274 | template <class Base = null_archetype<>, class Tag = optag1 > \
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| 275 | class NAME##_second_archetype : public Base { \
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| 276 | public: \
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| 277 | NAME##_second_archetype(detail::dummy_constructor x) : Base(x) { } \
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| 278 | }; \
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| 279 | \
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| 280 | template <class BaseFirst, class BaseSecond, class Tag> \
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| 281 | boolean_archetype \
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| 282 | operator OP (const NAME##_first_archetype<BaseFirst, Tag>&, \
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| 283 | const NAME##_second_archetype<BaseSecond, Tag>&) \
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| 284 | { \
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| 285 | return boolean_archetype(static_object<detail::dummy_constructor>::get()); \
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| 286 | }
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| 287 |
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| 288 | BOOST_DEFINE_BINARY_PREDICATE_ARCHETYPE(==, equal_op)
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| 289 | BOOST_DEFINE_BINARY_PREDICATE_ARCHETYPE(!=, not_equal_op)
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| 290 | BOOST_DEFINE_BINARY_PREDICATE_ARCHETYPE(<, less_than_op)
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| 291 | BOOST_DEFINE_BINARY_PREDICATE_ARCHETYPE(<=, less_equal_op)
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| 292 | BOOST_DEFINE_BINARY_PREDICATE_ARCHETYPE(>, greater_than_op)
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| 293 | BOOST_DEFINE_BINARY_PREDICATE_ARCHETYPE(>=, greater_equal_op)
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| 294 |
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| 295 | #define BOOST_DEFINE_OPERATOR_ARCHETYPE(OP, NAME) \
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| 296 | template <class Base = null_archetype<> > \
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| 297 | class NAME##_archetype : public Base { \
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| 298 | public: \
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| 299 | NAME##_archetype(detail::dummy_constructor x) : Base(x) { } \
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| 300 | NAME##_archetype(const NAME##_archetype&) \
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| 301 | : Base(static_object<detail::dummy_constructor>::get()) { } \
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| 302 | NAME##_archetype& operator=(const NAME##_archetype&) { return *this; } \
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| 303 | }; \
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| 304 | template <class Base> \
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| 305 | NAME##_archetype<Base> \
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| 306 | operator OP (const NAME##_archetype<Base>&,\
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| 307 | const NAME##_archetype<Base>&) \
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| 308 | { \
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| 309 | return \
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| 310 | NAME##_archetype<Base>(static_object<detail::dummy_constructor>::get()); \
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| 311 | }
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| 312 |
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| 313 | BOOST_DEFINE_OPERATOR_ARCHETYPE(+, addable)
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| 314 | BOOST_DEFINE_OPERATOR_ARCHETYPE(-, subtractable)
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| 315 | BOOST_DEFINE_OPERATOR_ARCHETYPE(*, multipliable)
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| 316 | BOOST_DEFINE_OPERATOR_ARCHETYPE(/, dividable)
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| 317 | BOOST_DEFINE_OPERATOR_ARCHETYPE(%, modable)
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| 318 |
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| 319 | // As is, these are useless because of the return type.
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| 320 | // Need to invent a better way...
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| 321 | #define BOOST_DEFINE_BINARY_OPERATOR_ARCHETYPE(OP, NAME) \
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| 322 | template <class Return, class Base = null_archetype<> > \
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| 323 | class NAME##_first_archetype : public Base { \
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| 324 | public: \
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| 325 | NAME##_first_archetype(detail::dummy_constructor x) : Base(x) { } \
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| 326 | }; \
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| 327 | \
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| 328 | template <class Return, class Base = null_archetype<> > \
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| 329 | class NAME##_second_archetype : public Base { \
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| 330 | public: \
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| 331 | NAME##_second_archetype(detail::dummy_constructor x) : Base(x) { } \
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| 332 | }; \
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| 333 | \
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| 334 | template <class Return, class BaseFirst, class BaseSecond> \
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| 335 | Return \
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| 336 | operator OP (const NAME##_first_archetype<Return, BaseFirst>&, \
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| 337 | const NAME##_second_archetype<Return, BaseSecond>&) \
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| 338 | { \
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| 339 | return Return(static_object<detail::dummy_constructor>::get()); \
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| 340 | }
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| 341 |
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| 342 | BOOST_DEFINE_BINARY_OPERATOR_ARCHETYPE(+, plus_op)
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| 343 | BOOST_DEFINE_BINARY_OPERATOR_ARCHETYPE(*, time_op)
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| 344 | BOOST_DEFINE_BINARY_OPERATOR_ARCHETYPE(/, divide_op)
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| 345 | BOOST_DEFINE_BINARY_OPERATOR_ARCHETYPE(-, subtract_op)
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| 346 | BOOST_DEFINE_BINARY_OPERATOR_ARCHETYPE(%, mod_op)
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| 347 |
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| 348 | //===========================================================================
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| 349 | // Function Object Archetype Classes
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| 350 |
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| 351 | template <class Return>
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| 352 | class generator_archetype {
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| 353 | public:
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| 354 | const Return& operator()() {
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| 355 | return static_object<Return>::get();
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| 356 | }
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| 357 | };
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| 358 |
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| 359 | class void_generator_archetype {
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| 360 | public:
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| 361 | void operator()() { }
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| 362 | };
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| 363 |
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| 364 | template <class Arg, class Return>
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| 365 | class unary_function_archetype {
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| 366 | private:
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| 367 | unary_function_archetype() { }
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| 368 | public:
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| 369 | unary_function_archetype(detail::dummy_constructor) { }
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| 370 | const Return& operator()(const Arg&) const {
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| 371 | return static_object<Return>::get();
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| 372 | }
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| 373 | };
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| 374 |
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| 375 | template <class Arg1, class Arg2, class Return>
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| 376 | class binary_function_archetype {
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| 377 | private:
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| 378 | binary_function_archetype() { }
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| 379 | public:
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| 380 | binary_function_archetype(detail::dummy_constructor) { }
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| 381 | const Return& operator()(const Arg1&, const Arg2&) const {
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| 382 | return static_object<Return>::get();
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| 383 | }
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| 384 | };
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| 385 |
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| 386 | template <class Arg>
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| 387 | class unary_predicate_archetype {
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| 388 | typedef boolean_archetype Return;
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| 389 | unary_predicate_archetype() { }
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| 390 | public:
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| 391 | unary_predicate_archetype(detail::dummy_constructor) { }
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| 392 | const Return& operator()(const Arg&) const {
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| 393 | return static_object<Return>::get();
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| 394 | }
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| 395 | };
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| 396 |
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| 397 | template <class Arg1, class Arg2, class Base = null_archetype<> >
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| 398 | class binary_predicate_archetype {
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| 399 | typedef boolean_archetype Return;
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| 400 | binary_predicate_archetype() { }
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| 401 | public:
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| 402 | binary_predicate_archetype(detail::dummy_constructor) { }
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| 403 | const Return& operator()(const Arg1&, const Arg2&) const {
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| 404 | return static_object<Return>::get();
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| 405 | }
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| 406 | };
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| 407 |
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| 408 | //===========================================================================
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| 409 | // Iterator Archetype Classes
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| 410 |
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| 411 | template <class T, int I = 0>
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| 412 | class input_iterator_archetype
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| 413 | {
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| 414 | private:
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| 415 | typedef input_iterator_archetype self;
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| 416 | public:
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| 417 | typedef std::input_iterator_tag iterator_category;
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| 418 | typedef T value_type;
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| 419 | struct reference {
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| 420 | operator const value_type&() const { return static_object<T>::get(); }
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| 421 | };
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| 422 | typedef const T* pointer;
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| 423 | typedef std::ptrdiff_t difference_type;
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| 424 | self& operator=(const self&) { return *this; }
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| 425 | bool operator==(const self&) const { return true; }
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| 426 | bool operator!=(const self&) const { return true; }
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| 427 | reference operator*() const { return reference(); }
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| 428 | self& operator++() { return *this; }
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| 429 | self operator++(int) { return *this; }
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| 430 | };
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| 431 |
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| 432 | template <class T>
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| 433 | class input_iterator_archetype_no_proxy
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| 434 | {
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| 435 | private:
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| 436 | typedef input_iterator_archetype_no_proxy self;
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| 437 | public:
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| 438 | typedef std::input_iterator_tag iterator_category;
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| 439 | typedef T value_type;
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| 440 | typedef const T& reference;
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| 441 | typedef const T* pointer;
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| 442 | typedef std::ptrdiff_t difference_type;
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| 443 | self& operator=(const self&) { return *this; }
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| 444 | bool operator==(const self&) const { return true; }
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| 445 | bool operator!=(const self&) const { return true; }
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| 446 | reference operator*() const { return static_object<T>::get(); }
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| 447 | self& operator++() { return *this; }
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| 448 | self operator++(int) { return *this; }
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| 449 | };
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| 450 |
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| 451 | template <class T>
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| 452 | struct output_proxy {
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| 453 | output_proxy& operator=(const T&) { return *this; }
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| 454 | };
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| 455 |
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| 456 | template <class T>
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| 457 | class output_iterator_archetype
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| 458 | {
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| 459 | public:
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| 460 | typedef output_iterator_archetype self;
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| 461 | public:
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| 462 | typedef std::output_iterator_tag iterator_category;
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| 463 | typedef output_proxy<T> value_type;
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| 464 | typedef output_proxy<T> reference;
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| 465 | typedef void pointer;
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| 466 | typedef void difference_type;
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| 467 | output_iterator_archetype(detail::dummy_constructor) { }
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| 468 | output_iterator_archetype(const self&) { }
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| 469 | self& operator=(const self&) { return *this; }
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| 470 | bool operator==(const self&) const { return true; }
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| 471 | bool operator!=(const self&) const { return true; }
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| 472 | reference operator*() const { return output_proxy<T>(); }
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| 473 | self& operator++() { return *this; }
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| 474 | self operator++(int) { return *this; }
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| 475 | private:
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| 476 | output_iterator_archetype() { }
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| 477 | };
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| 478 |
|
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| 479 | template <class T>
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| 480 | class input_output_iterator_archetype
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| 481 | {
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| 482 | private:
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| 483 | typedef input_output_iterator_archetype self;
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| 484 | struct in_out_tag : public std::input_iterator_tag, public std::output_iterator_tag { };
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| 485 | public:
|
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| 486 | typedef in_out_tag iterator_category;
|
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| 487 | typedef T value_type;
|
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| 488 | struct reference {
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| 489 | reference& operator=(const T&) { return *this; }
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| 490 | operator value_type() { return static_object<T>::get(); }
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| 491 | };
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| 492 | typedef const T* pointer;
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| 493 | typedef std::ptrdiff_t difference_type;
|
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| 494 | input_output_iterator_archetype() { }
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| 495 | self& operator=(const self&) { return *this; }
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| 496 | bool operator==(const self&) const { return true; }
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| 497 | bool operator!=(const self&) const { return true; }
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| 498 | reference operator*() const { return reference(); }
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| 499 | self& operator++() { return *this; }
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| 500 | self operator++(int) { return *this; }
|
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| 501 | };
|
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| 502 |
|
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| 503 | template <class T>
|
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| 504 | class forward_iterator_archetype
|
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| 505 | {
|
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| 506 | public:
|
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| 507 | typedef forward_iterator_archetype self;
|
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| 508 | public:
|
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| 509 | typedef std::forward_iterator_tag iterator_category;
|
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| 510 | typedef T value_type;
|
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| 511 | typedef const T& reference;
|
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| 512 | typedef T const* pointer;
|
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| 513 | typedef std::ptrdiff_t difference_type;
|
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| 514 | forward_iterator_archetype() { }
|
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| 515 | self& operator=(const self&) { return *this; }
|
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| 516 | bool operator==(const self&) const { return true; }
|
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| 517 | bool operator!=(const self&) const { return true; }
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| 518 | reference operator*() const { return static_object<T>::get(); }
|
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| 519 | self& operator++() { return *this; }
|
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| 520 | self operator++(int) { return *this; }
|
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| 521 | };
|
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| 522 |
|
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| 523 | template <class T>
|
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| 524 | class mutable_forward_iterator_archetype
|
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| 525 | {
|
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| 526 | public:
|
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| 527 | typedef mutable_forward_iterator_archetype self;
|
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| 528 | public:
|
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| 529 | typedef std::forward_iterator_tag iterator_category;
|
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| 530 | typedef T value_type;
|
---|
| 531 | typedef T& reference;
|
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| 532 | typedef T* pointer;
|
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| 533 | typedef std::ptrdiff_t difference_type;
|
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| 534 | mutable_forward_iterator_archetype() { }
|
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| 535 | self& operator=(const self&) { return *this; }
|
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| 536 | bool operator==(const self&) const { return true; }
|
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| 537 | bool operator!=(const self&) const { return true; }
|
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| 538 | reference operator*() const { return static_object<T>::get(); }
|
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| 539 | self& operator++() { return *this; }
|
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| 540 | self operator++(int) { return *this; }
|
---|
| 541 | };
|
---|
| 542 |
|
---|
| 543 | template <class T>
|
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| 544 | class bidirectional_iterator_archetype
|
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| 545 | {
|
---|
| 546 | public:
|
---|
| 547 | typedef bidirectional_iterator_archetype self;
|
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| 548 | public:
|
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| 549 | typedef std::bidirectional_iterator_tag iterator_category;
|
---|
| 550 | typedef T value_type;
|
---|
| 551 | typedef const T& reference;
|
---|
| 552 | typedef T* pointer;
|
---|
| 553 | typedef std::ptrdiff_t difference_type;
|
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| 554 | bidirectional_iterator_archetype() { }
|
---|
| 555 | self& operator=(const self&) { return *this; }
|
---|
| 556 | bool operator==(const self&) const { return true; }
|
---|
| 557 | bool operator!=(const self&) const { return true; }
|
---|
| 558 | reference operator*() const { return static_object<T>::get(); }
|
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| 559 | self& operator++() { return *this; }
|
---|
| 560 | self operator++(int) { return *this; }
|
---|
| 561 | self& operator--() { return *this; }
|
---|
| 562 | self operator--(int) { return *this; }
|
---|
| 563 | };
|
---|
| 564 |
|
---|
| 565 | template <class T>
|
---|
| 566 | class mutable_bidirectional_iterator_archetype
|
---|
| 567 | {
|
---|
| 568 | public:
|
---|
| 569 | typedef mutable_bidirectional_iterator_archetype self;
|
---|
| 570 | public:
|
---|
| 571 | typedef std::bidirectional_iterator_tag iterator_category;
|
---|
| 572 | typedef T value_type;
|
---|
| 573 | typedef T& reference;
|
---|
| 574 | typedef T* pointer;
|
---|
| 575 | typedef std::ptrdiff_t difference_type;
|
---|
| 576 | mutable_bidirectional_iterator_archetype() { }
|
---|
| 577 | self& operator=(const self&) { return *this; }
|
---|
| 578 | bool operator==(const self&) const { return true; }
|
---|
| 579 | bool operator!=(const self&) const { return true; }
|
---|
| 580 | reference operator*() const { return static_object<T>::get(); }
|
---|
| 581 | self& operator++() { return *this; }
|
---|
| 582 | self operator++(int) { return *this; }
|
---|
| 583 | self& operator--() { return *this; }
|
---|
| 584 | self operator--(int) { return *this; }
|
---|
| 585 | };
|
---|
| 586 |
|
---|
| 587 | template <class T>
|
---|
| 588 | class random_access_iterator_archetype
|
---|
| 589 | {
|
---|
| 590 | public:
|
---|
| 591 | typedef random_access_iterator_archetype self;
|
---|
| 592 | public:
|
---|
| 593 | typedef std::random_access_iterator_tag iterator_category;
|
---|
| 594 | typedef T value_type;
|
---|
| 595 | typedef const T& reference;
|
---|
| 596 | typedef T* pointer;
|
---|
| 597 | typedef std::ptrdiff_t difference_type;
|
---|
| 598 | random_access_iterator_archetype() { }
|
---|
| 599 | self& operator=(const self&) { return *this; }
|
---|
| 600 | bool operator==(const self&) const { return true; }
|
---|
| 601 | bool operator!=(const self&) const { return true; }
|
---|
| 602 | reference operator*() const { return static_object<T>::get(); }
|
---|
| 603 | self& operator++() { return *this; }
|
---|
| 604 | self operator++(int) { return *this; }
|
---|
| 605 | self& operator--() { return *this; }
|
---|
| 606 | self operator--(int) { return *this; }
|
---|
| 607 | reference operator[](difference_type) const
|
---|
| 608 | { return static_object<T>::get(); }
|
---|
| 609 | self& operator+=(difference_type) { return *this; }
|
---|
| 610 | self& operator-=(difference_type) { return *this; }
|
---|
| 611 | difference_type operator-(const self&) const
|
---|
| 612 | { return difference_type(); }
|
---|
| 613 | self operator+(difference_type) const { return *this; }
|
---|
| 614 | self operator-(difference_type) const { return *this; }
|
---|
| 615 | bool operator<(const self&) const { return true; }
|
---|
| 616 | bool operator<=(const self&) const { return true; }
|
---|
| 617 | bool operator>(const self&) const { return true; }
|
---|
| 618 | bool operator>=(const self&) const { return true; }
|
---|
| 619 | };
|
---|
| 620 | template <class T>
|
---|
| 621 | random_access_iterator_archetype<T>
|
---|
| 622 | operator+(typename random_access_iterator_archetype<T>::difference_type,
|
---|
| 623 | const random_access_iterator_archetype<T>& x)
|
---|
| 624 | { return x; }
|
---|
| 625 |
|
---|
| 626 |
|
---|
| 627 | template <class T>
|
---|
| 628 | class mutable_random_access_iterator_archetype
|
---|
| 629 | {
|
---|
| 630 | public:
|
---|
| 631 | typedef mutable_random_access_iterator_archetype self;
|
---|
| 632 | public:
|
---|
| 633 | typedef std::random_access_iterator_tag iterator_category;
|
---|
| 634 | typedef T value_type;
|
---|
| 635 | typedef T& reference;
|
---|
| 636 | typedef T* pointer;
|
---|
| 637 | typedef std::ptrdiff_t difference_type;
|
---|
| 638 | mutable_random_access_iterator_archetype() { }
|
---|
| 639 | self& operator=(const self&) { return *this; }
|
---|
| 640 | bool operator==(const self&) const { return true; }
|
---|
| 641 | bool operator!=(const self&) const { return true; }
|
---|
| 642 | reference operator*() const { return static_object<T>::get(); }
|
---|
| 643 | self& operator++() { return *this; }
|
---|
| 644 | self operator++(int) { return *this; }
|
---|
| 645 | self& operator--() { return *this; }
|
---|
| 646 | self operator--(int) { return *this; }
|
---|
| 647 | reference operator[](difference_type) const
|
---|
| 648 | { return static_object<T>::get(); }
|
---|
| 649 | self& operator+=(difference_type) { return *this; }
|
---|
| 650 | self& operator-=(difference_type) { return *this; }
|
---|
| 651 | difference_type operator-(const self&) const
|
---|
| 652 | { return difference_type(); }
|
---|
| 653 | self operator+(difference_type) const { return *this; }
|
---|
| 654 | self operator-(difference_type) const { return *this; }
|
---|
| 655 | bool operator<(const self&) const { return true; }
|
---|
| 656 | bool operator<=(const self&) const { return true; }
|
---|
| 657 | bool operator>(const self&) const { return true; }
|
---|
| 658 | bool operator>=(const self&) const { return true; }
|
---|
| 659 | };
|
---|
| 660 | template <class T>
|
---|
| 661 | mutable_random_access_iterator_archetype<T>
|
---|
| 662 | operator+
|
---|
| 663 | (typename mutable_random_access_iterator_archetype<T>::difference_type,
|
---|
| 664 | const mutable_random_access_iterator_archetype<T>& x)
|
---|
| 665 | { return x; }
|
---|
| 666 |
|
---|
| 667 | } // namespace boost
|
---|
| 668 |
|
---|
| 669 | #endif // BOOST_CONCEPT_ARCHETYPES_H
|
---|