// Map implementation -*- C++ -*-
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
-// Free Software Foundation, Inc.
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+// 2011 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option)
+// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-// USA.
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
/*
*
* purpose. It is provided "as is" without express or implied warranty.
*/
-/** @file stl_map.h
+/** @file bits/stl_map.h
* This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
+ * Do not attempt to use it directly. @headername{map}
*/
#ifndef _STL_MAP_H
#include <bits/concept_check.h>
#include <initializer_list>
-_GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
/**
* @brief A standard container made up of (key,value) pairs, which can be
* retrieved based on a key, in logarithmic time.
*
- * @ingroup Containers
- * @ingroup Assoc_containers
+ * @ingroup associative_containers
*
* Meets the requirements of a <a href="tables.html#65">container</a>, a
* <a href="tables.html#66">reversible container</a>, and an
* The contents of @a x are a valid, but unspecified %map.
*/
map(map&& __x)
- : _M_t(std::forward<_Rep_type>(__x._M_t)) { }
+ : _M_t(std::move(__x._M_t)) { }
+
+ /**
+ * @brief Builds a %map from an initializer_list.
+ * @param l An initializer_list.
+ * @param comp A comparison object.
+ * @param a An allocator object.
+ *
+ * Create a %map consisting of copies of the elements in the
+ * initializer_list @a l.
+ * This is linear in N if the range is already sorted, and NlogN
+ * otherwise (where N is @a l.size()).
+ */
+ map(initializer_list<value_type> __l,
+ const _Compare& __c = _Compare(),
+ const allocator_type& __a = allocator_type())
+ : _M_t(__c, __a)
+ { _M_t._M_insert_unique(__l.begin(), __l.end()); }
#endif
/**
map&
operator=(map&& __x)
{
+ // NB: DR 1204.
// NB: DR 675.
this->clear();
- this->swap(__x);
+ this->swap(__x);
+ return *this;
+ }
+
+ /**
+ * @brief %Map list assignment operator.
+ * @param l An initializer_list.
+ *
+ * This function fills a %map with copies of the elements in the
+ * initializer list @a l.
+ *
+ * Note that the assignment completely changes the %map and
+ * that the resulting %map's size is the same as the number
+ * of elements assigned. Old data may be lost.
+ */
+ map&
+ operator=(initializer_list<value_type> __l)
+ {
+ this->clear();
+ this->insert(__l.begin(), __l.end());
return *this;
}
#endif
/// Get a copy of the memory allocation object.
allocator_type
- get_allocator() const
+ get_allocator() const _GLIBCXX_NOEXCEPT
{ return _M_t.get_allocator(); }
// iterators
* Iteration is done in ascending order according to the keys.
*/
iterator
- begin()
+ begin() _GLIBCXX_NOEXCEPT
{ return _M_t.begin(); }
/**
* keys.
*/
const_iterator
- begin() const
+ begin() const _GLIBCXX_NOEXCEPT
{ return _M_t.begin(); }
/**
* according to the keys.
*/
iterator
- end()
+ end() _GLIBCXX_NOEXCEPT
{ return _M_t.end(); }
/**
* the keys.
*/
const_iterator
- end() const
+ end() const _GLIBCXX_NOEXCEPT
{ return _M_t.end(); }
/**
* keys.
*/
reverse_iterator
- rbegin()
+ rbegin() _GLIBCXX_NOEXCEPT
{ return _M_t.rbegin(); }
/**
* according to the keys.
*/
const_reverse_iterator
- rbegin() const
+ rbegin() const _GLIBCXX_NOEXCEPT
{ return _M_t.rbegin(); }
/**
* according to the keys.
*/
reverse_iterator
- rend()
+ rend() _GLIBCXX_NOEXCEPT
{ return _M_t.rend(); }
/**
* order according to the keys.
*/
const_reverse_iterator
- rend() const
+ rend() const _GLIBCXX_NOEXCEPT
{ return _M_t.rend(); }
#ifdef __GXX_EXPERIMENTAL_CXX0X__
* keys.
*/
const_iterator
- cbegin() const
+ cbegin() const noexcept
{ return _M_t.begin(); }
/**
* the keys.
*/
const_iterator
- cend() const
+ cend() const noexcept
{ return _M_t.end(); }
/**
* according to the keys.
*/
const_reverse_iterator
- crbegin() const
+ crbegin() const noexcept
{ return _M_t.rbegin(); }
/**
* order according to the keys.
*/
const_reverse_iterator
- crend() const
+ crend() const noexcept
{ return _M_t.rend(); }
#endif
* end().)
*/
bool
- empty() const
+ empty() const _GLIBCXX_NOEXCEPT
{ return _M_t.empty(); }
/** Returns the size of the %map. */
size_type
- size() const
+ size() const _GLIBCXX_NOEXCEPT
{ return _M_t.size(); }
/** Returns the maximum size of the %map. */
size_type
- max_size() const
+ max_size() const _GLIBCXX_NOEXCEPT
{ return _M_t.max_size(); }
// [23.3.1.2] element access
return (*__i).second;
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ mapped_type&
+ operator[](key_type&& __k)
+ {
+ // concept requirements
+ __glibcxx_function_requires(_DefaultConstructibleConcept<mapped_type>)
+
+ iterator __i = lower_bound(__k);
+ // __i->first is greater than or equivalent to __k.
+ if (__i == end() || key_comp()(__k, (*__i).first))
+ __i = insert(__i, std::make_pair(std::move(__k), mapped_type()));
+ return (*__i).second;
+ }
+#endif
+
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 464. Suggestion for new member functions in standard containers.
/**
{ return _M_t._M_insert_unique(__x); }
#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename _Pair, typename = typename
+ std::enable_if<std::is_convertible<_Pair,
+ value_type>::value>::type>
+ std::pair<iterator, bool>
+ insert(_Pair&& __x)
+ { return _M_t._M_insert_unique(std::forward<_Pair>(__x)); }
+#endif
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
/**
* @brief Attempts to insert a list of std::pairs into the %map.
* @param list A std::initializer_list<value_type> of pairs to be
* inserted.
*
* Complexity similar to that of the range constructor.
- *
*/
void
insert(std::initializer_list<value_type> __list)
- { insert (__list.begin(), __list.end()); }
+ { insert(__list.begin(), __list.end()); }
#endif
/**
* cause no gains in efficiency.
*
* See
- * http://gcc.gnu.org/onlinedocs/libstdc++/23_containers/howto.html#4
- * for more on "hinting".
+ * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt07ch17.html
+ * for more on @a hinting.
*
* Insertion requires logarithmic time (if the hint is not taken).
*/
iterator
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ insert(const_iterator __position, const value_type& __x)
+#else
insert(iterator __position, const value_type& __x)
+#endif
{ return _M_t._M_insert_unique_(__position, __x); }
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename _Pair, typename = typename
+ std::enable_if<std::is_convertible<_Pair,
+ value_type>::value>::type>
+ iterator
+ insert(const_iterator __position, _Pair&& __x)
+ { return _M_t._M_insert_unique_(__position,
+ std::forward<_Pair>(__x)); }
+#endif
+
/**
* @brief Template function that attempts to insert a range of elements.
* @param first Iterator pointing to the start of the range to be
insert(_InputIterator __first, _InputIterator __last)
{ _M_t._M_insert_unique(__first, __last); }
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR 130. Associative erase should return an iterator.
+ /**
+ * @brief Erases an element from a %map.
+ * @param position An iterator pointing to the element to be erased.
+ * @return An iterator pointing to the element immediately following
+ * @a position prior to the element being erased. If no such
+ * element exists, end() is returned.
+ *
+ * This function erases an element, pointed to by the given
+ * iterator, from a %map. Note that this function only erases
+ * the element, and that if the element is itself a pointer,
+ * the pointed-to memory is not touched in any way. Managing
+ * the pointer is the user's responsibility.
+ */
+ iterator
+ erase(const_iterator __position)
+ { return _M_t.erase(__position); }
+#else
/**
* @brief Erases an element from a %map.
* @param position An iterator pointing to the element to be erased.
void
erase(iterator __position)
{ _M_t.erase(__position); }
+#endif
/**
* @brief Erases elements according to the provided key.
erase(const key_type& __x)
{ return _M_t.erase(__x); }
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR 130. Associative erase should return an iterator.
+ /**
+ * @brief Erases a [first,last) range of elements from a %map.
+ * @param first Iterator pointing to the start of the range to be
+ * erased.
+ * @param last Iterator pointing to the end of the range to be erased.
+ * @return The iterator @a last.
+ *
+ * This function erases a sequence of elements from a %map.
+ * Note that this function only erases the element, and that if
+ * the element is itself a pointer, the pointed-to memory is not touched
+ * in any way. Managing the pointer is the user's responsibility.
+ */
+ iterator
+ erase(const_iterator __first, const_iterator __last)
+ { return _M_t.erase(__first, __last); }
+#else
/**
* @brief Erases a [first,last) range of elements from a %map.
* @param first Iterator pointing to the start of the range to be
void
erase(iterator __first, iterator __last)
{ _M_t.erase(__first, __last); }
+#endif
/**
* @brief Swaps data with another %map.
* that std::swap(m1,m2) will feed to this function.
*/
void
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
- swap(map&& __x)
-#else
swap(map& __x)
-#endif
{ _M_t.swap(__x._M_t); }
/**
* Managing the pointer is the user's responsibility.
*/
void
- clear()
+ clear() _GLIBCXX_NOEXCEPT
{ _M_t.clear(); }
// observers
map<_Key, _Tp, _Compare, _Alloc>& __y)
{ __x.swap(__y); }
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
- template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
- inline void
- swap(map<_Key, _Tp, _Compare, _Alloc>&& __x,
- map<_Key, _Tp, _Compare, _Alloc>& __y)
- { __x.swap(__y); }
-
- template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
- inline void
- swap(map<_Key, _Tp, _Compare, _Alloc>& __x,
- map<_Key, _Tp, _Compare, _Alloc>&& __y)
- { __x.swap(__y); }
-#endif
-
-_GLIBCXX_END_NESTED_NAMESPACE
+_GLIBCXX_END_NAMESPACE_CONTAINER
+} // namespace std
#endif /* _STL_MAP_H */
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