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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/bits/forward_list.tcc')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/bits/forward_list.tcc | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/bits/forward_list.tcc b/gcc-4.4.3/libstdc++-v3/include/bits/forward_list.tcc new file mode 100644 index 000000000..8458e7e5f --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/bits/forward_list.tcc @@ -0,0 +1,478 @@ +// <forward_list.tcc> -*- C++ -*- + +// Copyright (C) 2008, 2009 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 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// 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. + +// 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/>. + +/** @file forward_list.tcc + * This is a Standard C++ Library header. + */ + +#ifndef _FORWARD_LIST_TCC +#define _FORWARD_LIST_TCC 1 + +_GLIBCXX_BEGIN_NAMESPACE(std) + + template<typename _Alloc> + void + _Fwd_list_node_base<_Alloc>:: + _M_transfer_after(_Pointer __bbegin) + { + _Pointer __bend = __bbegin; + while (__bend && __bend->_M_next) + __bend = __bend->_M_next; + _M_transfer_after(__bbegin, __bend); + } + + template<typename _Alloc> + void + _Fwd_list_node_base<_Alloc>:: + _M_transfer_after(_Pointer __bbegin, _Pointer __bend) + { + _Pointer __keep = __bbegin->_M_next; + if (__bend) + { + __bbegin->_M_next = __bend->_M_next; + __bend->_M_next = _M_next; + } + else + __bbegin->_M_next = 0; + _M_next = __keep; + } + + template<typename _Alloc> + void + _Fwd_list_node_base<_Alloc>:: + _M_reverse_after() + { + _Pointer __tail = _M_next; + if (!__tail) + return; + while (_Pointer __temp = __tail->_M_next) + { + _Pointer __keep = _M_next; + _M_next = __temp; + __tail->_M_next = __temp->_M_next; + _M_next->_M_next = __keep; + } + } + + /** + * @brief Sort the singly linked list starting after this node. + * This node is assumed to be an empty head node (of type + * _Fwd_list_node_base). + */ + template<typename _Tp, class _Alloc> + template<typename _Comp> + void + _Fwd_list_node<_Tp, _Alloc>:: + _M_sort_after(_Comp __comp) + { + // If `next' is 0, return immediately. + _Pointer __list = __static_pointer_cast<_Pointer>(this->_M_next); + if (!__list) + return; + + unsigned long __insize = 1; + + while (1) + { + _Pointer __p = __list; + __list = 0; + _Pointer __tail = 0; + + // Count number of merges we do in this pass. + unsigned long __nmerges = 0; + + while (__p) + { + ++__nmerges; + // There exists a merge to be done. + // Step `insize' places along from p. + _Pointer __q = __p; + unsigned long __psize = 0; + for (unsigned long __i = 0; __i < __insize; ++__i) + { + ++__psize; + __q = __static_pointer_cast<_Pointer>(__q->_M_next); + if (!__q) + break; + } + + // If q hasn't fallen off end, we have two lists to merge. + unsigned long __qsize = __insize; + + // Now we have two lists; merge them. + while (__psize > 0 || (__qsize > 0 && __q)) + { + // Decide whether next node of merge comes from p or q. + _Pointer __e; + if (__psize == 0) + { + // p is empty; e must come from q. + __e = __q; + __q = __static_pointer_cast<_Pointer>(__q->_M_next); + --__qsize; + } + else if (__qsize == 0 || !__q) + { + // q is empty; e must come from p. + __e = __p; + __p = __static_pointer_cast<_Pointer>(__p->_M_next); + --__psize; + } + else if (__comp(__p->_M_value, __q->_M_value)) + { + // First node of p is lower; e must come from p. + __e = __p; + __p = __static_pointer_cast<_Pointer>(__p->_M_next); + --__psize; + } + else + { + // First node of q is lower; e must come from q. + __e = __q; + __q = __static_pointer_cast<_Pointer>(__q->_M_next); + --__qsize; + } + + // Add the next node to the merged list. + if (__tail) + __tail->_M_next = __e; + else + __list = __e; + __tail = __e; + } + + // Now p has stepped `insize' places along, and q has too. + __p = __q; + } + __tail->_M_next = 0; + + // If we have done only one merge, we're finished. + // Allow for nmerges == 0, the empty list case. + if (__nmerges <= 1) + { + this->_M_next = __list; + return; + } + + // Otherwise repeat, merging lists twice the size. + __insize *= 2; + } + } + + template<typename _Tp, typename _Alloc> + _Fwd_list_base<_Tp, _Alloc>:: + _Fwd_list_base(const _Fwd_list_base& __lst, const _Alloc& __a) + : _M_impl(__a) + { + this->_M_impl._M_head._M_next = 0; + typename _Node_base::_Pointer __to = &this->_M_impl._M_head; + typename _Node::_Pointer __curr + = __static_pointer_cast<typename _Node::_Pointer> + (__lst._M_impl._M_head._M_next); + while (__curr) + { + __to->_M_next = _M_create_node(__curr->_M_value); + __to = __to->_M_next; + __curr = __static_pointer_cast<typename _Node::_Pointer> + (__curr->_M_next); + } + } + + template<typename _Tp, typename _Alloc> + template<typename... _Args> + typename _Fwd_list_base<_Tp, _Alloc>::_Node_base::_Pointer + _Fwd_list_base<_Tp, _Alloc>:: + _M_insert_after(const_iterator __pos, _Args&&... __args) + { + typename _Node_base::_Pointer __to + = __const_pointer_cast<typename _Node_base::_Pointer> + (__pos._M_node); + typename _Node::_Pointer __thing + = __static_pointer_cast<typename _Node::_Pointer>( + _M_create_node(std::forward<_Args>(__args)...) ); + __thing->_M_next = __to->_M_next; + __to->_M_next = __thing; + return __static_pointer_cast<typename _Node_base::_Pointer> + (__to->_M_next); + } + + template<typename _Tp, typename _Alloc> + typename _Fwd_list_base<_Tp, _Alloc>::_Node_base::_Pointer + _Fwd_list_base<_Tp, _Alloc>:: + _M_erase_after(typename _Node_base::_Pointer __pos) + { + typename _Node::_Pointer __curr + = __static_pointer_cast<typename _Node::_Pointer>(__pos->_M_next); + if (__curr) + { + typename _Node_base::_Pointer __next = __curr->_M_next; + __pos->_M_next = __next; + _M_get_Node_allocator().destroy(__curr); + _M_put_node(__curr); + } + return __pos; + } + + template<typename _Tp, typename _Alloc> + typename _Fwd_list_base<_Tp, _Alloc>::_Node_base::_Pointer + _Fwd_list_base<_Tp, _Alloc>:: + _M_erase_after(typename _Node_base::_Pointer __pos, + typename _Node_base::_Pointer __last) + { + typename _Node::_Pointer __curr + = __static_pointer_cast<typename _Node::_Pointer>(__pos->_M_next); + while (__curr) + { + typename _Node::_Pointer __temp = __curr; + __curr = __static_pointer_cast<typename _Node::_Pointer> + (__curr->_M_next); + _M_get_Node_allocator().destroy(__temp); + _M_put_node(__temp); + __pos->_M_next = __curr; + if (__temp == __last) + break; + } + return __pos; + } + + // Called by the range constructor to implement [23.1.1]/9 + template<typename _Tp, typename _Alloc> + template<typename _InputIterator> + void + forward_list<_Tp, _Alloc>:: + _M_initialize_dispatch(_InputIterator __first, _InputIterator __last, + __false_type) + { + typename _Node_base::_Pointer __to = &this->_M_impl._M_head; + for (; __first != __last; ++__first) + { + __to->_M_next = this->_M_create_node(*__first); + __to = __to->_M_next; + } + } + + // Called by forward_list(n,v,a), and the range constructor + // when it turns out to be the same thing. + template<typename _Tp, typename _Alloc> + void + forward_list<_Tp, _Alloc>:: + _M_fill_initialize(size_type __n, const value_type& __value) + { + typename _Node_base::_Pointer __to = &this->_M_impl._M_head; + for (; __n > 0; --__n) + { + __to->_M_next = this->_M_create_node(__value); + __to = __to->_M_next; + } + } + + template<typename _Tp, typename _Alloc> + forward_list<_Tp, _Alloc>& + forward_list<_Tp, _Alloc>:: + operator=(const forward_list& __list) + { + if (&__list != this) + { + iterator __prev1 = before_begin(); + iterator __curr1 = begin(); + iterator __last1 = end(); + const_iterator __first2 = __list.cbegin(); + const_iterator __last2 = __list.cend(); + while (__curr1 != __last1 && __first2 != __last2) + { + *__curr1 = *__first2; + ++__prev1; + ++__curr1; + ++__first2; + } + if (__first2 == __last2) + erase_after(__prev1, __last1); + else + insert_after(__prev1, __first2, __last2); + } + return *this; + } + + template<typename _Tp, typename _Alloc> + void + forward_list<_Tp, _Alloc>:: + resize(size_type __sz, value_type __val) + { + iterator __k = before_begin(); + + size_type __len = 0; + while (__k._M_next() != end() && __len < __sz) + { + ++__k; + ++__len; + } + if (__len == __sz) + erase_after(__k, end()); + else + insert_after(__k, __sz - __len, __val); + } + + template<typename _Tp, typename _Alloc> + void + forward_list<_Tp, _Alloc>:: + splice_after(const_iterator __pos, forward_list&& __list) + { + if (!__list.empty() && &__list != this) + { + typename _Node_base::_Pointer __tmp + = __const_pointer_cast<typename _Node_base::_Pointer> + (__pos._M_node); + const_iterator __before = __list.cbefore_begin(); + __tmp->_M_transfer_after(__const_pointer_cast + <typename _Node_base::_Pointer> + (__before._M_node)); + } + } + + template<typename _Tp, typename _Alloc> + void + forward_list<_Tp, _Alloc>:: + splice_after(const_iterator __pos, forward_list&& __list, + const_iterator __before, const_iterator __last) + { + typename _Node_base::_Pointer __tmp + = __const_pointer_cast<typename _Node_base::_Pointer>(__pos._M_node); + __tmp->_M_transfer_after(__const_pointer_cast + <typename _Node_base::_Pointer> + (__before._M_node), + __const_pointer_cast + <typename _Node_base::_Pointer> + (__last._M_node)); + } + + template<typename _Tp, typename _Alloc> + void + forward_list<_Tp, _Alloc>:: + remove(const _Tp& __val) + { + typename _Node::_Pointer __curr + = __static_pointer_cast<typename _Node::_Pointer> + (&this->_M_impl._M_head); + while (typename _Node::_Pointer __temp = + __static_pointer_cast<typename _Node::_Pointer>(__curr->_M_next)) + { + if (__temp->_M_value == __val) + this->_M_erase_after(__curr); + else + __curr = __static_pointer_cast<typename _Node::_Pointer> + (__curr->_M_next); + } + } + + template<typename _Tp, typename _Alloc> + template<typename _Pred> + void + forward_list<_Tp, _Alloc>:: + remove_if(_Pred __pred) + { + typename _Node::_Pointer __curr + = __static_pointer_cast<typename _Node::_Pointer> + (&this->_M_impl._M_head); + while (typename _Node::_Pointer __temp = + __static_pointer_cast<typename _Node::_Pointer>(__curr->_M_next)) + { + if (__pred(__temp->_M_value)) + this->_M_erase_after(__curr); + else + __curr = __static_pointer_cast<typename _Node::_Pointer> + (__curr->_M_next); + } + } + + template<typename _Tp, typename _Alloc> + template<typename _BinPred> + void + forward_list<_Tp, _Alloc>:: + unique(_BinPred __binary_pred) + { + iterator __first = begin(); + iterator __last = end(); + if (__first == __last) + return; + iterator __next = __first; + while (++__next != __last) + { + if (__binary_pred(*__first, *__next)) + erase_after(__first); + else + __first = __next; + __next = __first; + } + } + + template<typename _Tp, typename _Alloc> + template<typename _Comp> + void + forward_list<_Tp, _Alloc>:: + merge(forward_list&& __list, _Comp __comp) + { + typename _Node_base::_Pointer __node = &this->_M_impl._M_head; + while (__node->_M_next && __list._M_impl._M_head._M_next) + { + if (__comp(__static_pointer_cast<typename _Node::_Pointer> + (__list._M_impl._M_head._M_next)->_M_value, + __static_pointer_cast<typename _Node::_Pointer> + (__node->_M_next)->_M_value)) + __node->_M_transfer_after(&__list._M_impl._M_head, + __list._M_impl._M_head._M_next); + __node = __node->_M_next; + } + if (__list._M_impl._M_head._M_next) + { + __node->_M_next = __list._M_impl._M_head._M_next; + __list._M_impl._M_head._M_next = 0; + } + } + + template<typename _Tp, typename _Alloc> + bool + operator==(const forward_list<_Tp, _Alloc>& __lx, + const forward_list<_Tp, _Alloc>& __ly) + { + // We don't have size() so we need to walk through both lists + // making sure both iterators are valid. + auto __ix = __lx.cbegin(); + auto __iy = __ly.cbegin(); + while (__ix != __lx.cend() && __iy != __ly.cend()) + { + if (*__ix != *__iy) + return false; + ++__ix; + ++__iy; + } + if (__ix == __lx.cend() && __iy == __ly.cend()) + return true; + else + return false; + } + +_GLIBCXX_END_NAMESPACE // namespace std + +#endif /* _FORWARD_LIST_TCC */ + |