[857] | 1 | // (C) Copyright Joel de Guzman 2003.
|
---|
| 2 | // Distributed under the Boost Software License, Version 1.0. (See
|
---|
| 3 | // accompanying file LICENSE_1_0.txt or copy at
|
---|
| 4 | // http://www.boost.org/LICENSE_1_0.txt)
|
---|
| 5 |
|
---|
| 6 | #ifndef VECTOR_INDEXING_SUITE_JDG20036_HPP
|
---|
| 7 | # define VECTOR_INDEXING_SUITE_JDG20036_HPP
|
---|
| 8 |
|
---|
| 9 | # include <boost/python/suite/indexing/indexing_suite.hpp>
|
---|
| 10 | # include <boost/python/suite/indexing/container_utils.hpp>
|
---|
| 11 | # include <boost/python/iterator.hpp>
|
---|
| 12 |
|
---|
| 13 | namespace boost { namespace python {
|
---|
| 14 |
|
---|
| 15 | // Forward declaration
|
---|
| 16 | template <class Container, bool NoProxy, class DerivedPolicies>
|
---|
| 17 | class vector_indexing_suite;
|
---|
| 18 |
|
---|
| 19 | namespace detail
|
---|
| 20 | {
|
---|
| 21 | template <class Container, bool NoProxy>
|
---|
| 22 | class final_vector_derived_policies
|
---|
| 23 | : public vector_indexing_suite<Container,
|
---|
| 24 | NoProxy, final_vector_derived_policies<Container, NoProxy> > {};
|
---|
| 25 | }
|
---|
| 26 |
|
---|
| 27 | // The vector_indexing_suite class is a predefined indexing_suite derived
|
---|
| 28 | // class for wrapping std::vector (and std::vector like) classes. It provides
|
---|
| 29 | // all the policies required by the indexing_suite (see indexing_suite).
|
---|
| 30 | // Example usage:
|
---|
| 31 | //
|
---|
| 32 | // class X {...};
|
---|
| 33 | //
|
---|
| 34 | // ...
|
---|
| 35 | //
|
---|
| 36 | // class_<std::vector<X> >("XVec")
|
---|
| 37 | // .def(vector_indexing_suite<std::vector<X> >())
|
---|
| 38 | // ;
|
---|
| 39 | //
|
---|
| 40 | // By default indexed elements are returned by proxy. This can be
|
---|
| 41 | // disabled by supplying *true* in the NoProxy template parameter.
|
---|
| 42 | //
|
---|
| 43 | template <
|
---|
| 44 | class Container,
|
---|
| 45 | bool NoProxy = false,
|
---|
| 46 | class DerivedPolicies
|
---|
| 47 | = detail::final_vector_derived_policies<Container, NoProxy> >
|
---|
| 48 | class vector_indexing_suite
|
---|
| 49 | : public indexing_suite<Container, DerivedPolicies, NoProxy>
|
---|
| 50 | {
|
---|
| 51 | public:
|
---|
| 52 |
|
---|
| 53 | typedef typename Container::value_type data_type;
|
---|
| 54 | typedef typename Container::value_type key_type;
|
---|
| 55 | typedef typename Container::size_type index_type;
|
---|
| 56 | typedef typename Container::size_type size_type;
|
---|
| 57 | typedef typename Container::difference_type difference_type;
|
---|
| 58 |
|
---|
| 59 | template <class Class>
|
---|
| 60 | static void
|
---|
| 61 | extension_def(Class& cl)
|
---|
| 62 | {
|
---|
| 63 | cl
|
---|
| 64 | .def("append", &base_append)
|
---|
| 65 | .def("extend", &base_extend)
|
---|
| 66 | ;
|
---|
| 67 | }
|
---|
| 68 |
|
---|
| 69 | static
|
---|
| 70 | typename mpl::if_<
|
---|
| 71 | is_class<data_type>
|
---|
| 72 | , data_type&
|
---|
| 73 | , data_type
|
---|
| 74 | >::type
|
---|
| 75 | get_item(Container& container, index_type i)
|
---|
| 76 | {
|
---|
| 77 | return container[i];
|
---|
| 78 | }
|
---|
| 79 |
|
---|
| 80 | static object
|
---|
| 81 | get_slice(Container& container, index_type from, index_type to)
|
---|
| 82 | {
|
---|
| 83 | if (from > to)
|
---|
| 84 | return object(Container());
|
---|
| 85 | return object(Container(container.begin()+from, container.begin()+to));
|
---|
| 86 | }
|
---|
| 87 |
|
---|
| 88 | static void
|
---|
| 89 | set_item(Container& container, index_type i, data_type const& v)
|
---|
| 90 | {
|
---|
| 91 | container[i] = v;
|
---|
| 92 | }
|
---|
| 93 |
|
---|
| 94 | static void
|
---|
| 95 | set_slice(Container& container, index_type from,
|
---|
| 96 | index_type to, data_type const& v)
|
---|
| 97 | {
|
---|
| 98 | if (from > to) {
|
---|
| 99 | return;
|
---|
| 100 | }
|
---|
| 101 | else {
|
---|
| 102 | container.erase(container.begin()+from, container.begin()+to);
|
---|
| 103 | container.insert(container.begin()+from, v);
|
---|
| 104 | }
|
---|
| 105 | }
|
---|
| 106 |
|
---|
| 107 | template <class Iter>
|
---|
| 108 | static void
|
---|
| 109 | set_slice(Container& container, index_type from,
|
---|
| 110 | index_type to, Iter first, Iter last)
|
---|
| 111 | {
|
---|
| 112 | if (from > to) {
|
---|
| 113 | container.insert(container.begin()+from, first, last);
|
---|
| 114 | }
|
---|
| 115 | else {
|
---|
| 116 | container.erase(container.begin()+from, container.begin()+to);
|
---|
| 117 | container.insert(container.begin()+from, first, last);
|
---|
| 118 | }
|
---|
| 119 | }
|
---|
| 120 |
|
---|
| 121 | static void
|
---|
| 122 | delete_item(Container& container, index_type i)
|
---|
| 123 | {
|
---|
| 124 | container.erase(container.begin()+i);
|
---|
| 125 | }
|
---|
| 126 |
|
---|
| 127 | static void
|
---|
| 128 | delete_slice(Container& container, index_type from, index_type to)
|
---|
| 129 | {
|
---|
| 130 | if (from > to) {
|
---|
| 131 | // A null-op.
|
---|
| 132 | return;
|
---|
| 133 | }
|
---|
| 134 | container.erase(container.begin()+from, container.begin()+to);
|
---|
| 135 | }
|
---|
| 136 |
|
---|
| 137 | static size_t
|
---|
| 138 | size(Container& container)
|
---|
| 139 | {
|
---|
| 140 | return container.size();
|
---|
| 141 | }
|
---|
| 142 |
|
---|
| 143 | static bool
|
---|
| 144 | contains(Container& container, key_type const& key)
|
---|
| 145 | {
|
---|
| 146 | return std::find(container.begin(), container.end(), key)
|
---|
| 147 | != container.end();
|
---|
| 148 | }
|
---|
| 149 |
|
---|
| 150 | static index_type
|
---|
| 151 | get_min_index(Container& container)
|
---|
| 152 | {
|
---|
| 153 | return 0;
|
---|
| 154 | }
|
---|
| 155 |
|
---|
| 156 | static index_type
|
---|
| 157 | get_max_index(Container& container)
|
---|
| 158 | {
|
---|
| 159 | return container.size();
|
---|
| 160 | }
|
---|
| 161 |
|
---|
| 162 | static bool
|
---|
| 163 | compare_index(Container& container, index_type a, index_type b)
|
---|
| 164 | {
|
---|
| 165 | return a < b;
|
---|
| 166 | }
|
---|
| 167 |
|
---|
| 168 | static index_type
|
---|
| 169 | convert_index(Container& container, PyObject* i_)
|
---|
| 170 | {
|
---|
| 171 | extract<long> i(i_);
|
---|
| 172 | if (i.check())
|
---|
| 173 | {
|
---|
| 174 | long index = i();
|
---|
| 175 | if (index < 0)
|
---|
| 176 | index += DerivedPolicies::size(container);
|
---|
| 177 | if (index >= long(container.size()) || index < 0)
|
---|
| 178 | {
|
---|
| 179 | PyErr_SetString(PyExc_IndexError, "Index out of range");
|
---|
| 180 | throw_error_already_set();
|
---|
| 181 | }
|
---|
| 182 | return index;
|
---|
| 183 | }
|
---|
| 184 |
|
---|
| 185 | PyErr_SetString(PyExc_TypeError, "Invalid index type");
|
---|
| 186 | throw_error_already_set();
|
---|
| 187 | return index_type();
|
---|
| 188 | }
|
---|
| 189 |
|
---|
| 190 | static void
|
---|
| 191 | append(Container& container, data_type const& v)
|
---|
| 192 | {
|
---|
| 193 | container.push_back(v);
|
---|
| 194 | }
|
---|
| 195 |
|
---|
| 196 | template <class Iter>
|
---|
| 197 | static void
|
---|
| 198 | extend(Container& container, Iter first, Iter last)
|
---|
| 199 | {
|
---|
| 200 | container.insert(container.end(), first, last);
|
---|
| 201 | }
|
---|
| 202 |
|
---|
| 203 | private:
|
---|
| 204 |
|
---|
| 205 | static void
|
---|
| 206 | base_append(Container& container, object v)
|
---|
| 207 | {
|
---|
| 208 | extract<data_type&> elem(v);
|
---|
| 209 | // try if elem is an exact Data
|
---|
| 210 | if (elem.check())
|
---|
| 211 | {
|
---|
| 212 | DerivedPolicies::append(container, elem());
|
---|
| 213 | }
|
---|
| 214 | else
|
---|
| 215 | {
|
---|
| 216 | // try to convert elem to data_type
|
---|
| 217 | extract<data_type> elem(v);
|
---|
| 218 | if (elem.check())
|
---|
| 219 | {
|
---|
| 220 | DerivedPolicies::append(container, elem());
|
---|
| 221 | }
|
---|
| 222 | else
|
---|
| 223 | {
|
---|
| 224 | PyErr_SetString(PyExc_TypeError,
|
---|
| 225 | "Attempting to append an invalid type");
|
---|
| 226 | throw_error_already_set();
|
---|
| 227 | }
|
---|
| 228 | }
|
---|
| 229 | }
|
---|
| 230 |
|
---|
| 231 | static void
|
---|
| 232 | base_extend(Container& container, object v)
|
---|
| 233 | {
|
---|
| 234 | std::vector<data_type> temp;
|
---|
| 235 | container_utils::extend_container(temp, v);
|
---|
| 236 | DerivedPolicies::extend(container, temp.begin(), temp.end());
|
---|
| 237 | }
|
---|
| 238 | };
|
---|
| 239 |
|
---|
| 240 | }} // namespace boost::python
|
---|
| 241 |
|
---|
| 242 | #endif // VECTOR_INDEXING_SUITE_JDG20036_HPP
|
---|