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Diffstat (limited to 'src/third_party/boost-1.56.0/boost/intrusive/circular_slist_algorithms.hpp')
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diff --git a/src/third_party/boost-1.56.0/boost/intrusive/circular_slist_algorithms.hpp b/src/third_party/boost-1.56.0/boost/intrusive/circular_slist_algorithms.hpp deleted file mode 100644 index d41dac44a00..00000000000 --- a/src/third_party/boost-1.56.0/boost/intrusive/circular_slist_algorithms.hpp +++ /dev/null @@ -1,403 +0,0 @@ -///////////////////////////////////////////////////////////////////////////// -// -// (C) Copyright Olaf Krzikalla 2004-2006. -// (C) Copyright Ion Gaztanaga 2006-2013 -// -// Distributed under the Boost Software License, Version 1.0. -// (See accompanying file LICENSE_1_0.txt or copy at -// http://www.boost.org/LICENSE_1_0.txt) -// -// See http://www.boost.org/libs/intrusive for documentation. -// -///////////////////////////////////////////////////////////////////////////// - -#ifndef BOOST_INTRUSIVE_CIRCULAR_SLIST_ALGORITHMS_HPP -#define BOOST_INTRUSIVE_CIRCULAR_SLIST_ALGORITHMS_HPP - -#include <boost/intrusive/detail/config_begin.hpp> -#include <boost/intrusive/intrusive_fwd.hpp> -#include <boost/intrusive/detail/common_slist_algorithms.hpp> -#include <boost/intrusive/detail/assert.hpp> -#include <boost/intrusive/detail/utilities.hpp> -#include <cstddef> - -namespace boost { -namespace intrusive { - -//! circular_slist_algorithms provides basic algorithms to manipulate nodes -//! forming a circular singly linked list. An empty circular list is formed by a node -//! whose pointer to the next node points to itself. -//! -//! circular_slist_algorithms is configured with a NodeTraits class, which encapsulates the -//! information about the node to be manipulated. NodeTraits must support the -//! following interface: -//! -//! <b>Typedefs</b>: -//! -//! <tt>node</tt>: The type of the node that forms the circular list -//! -//! <tt>node_ptr</tt>: A pointer to a node -//! -//! <tt>const_node_ptr</tt>: A pointer to a const node -//! -//! <b>Static functions</b>: -//! -//! <tt>static node_ptr get_next(const_node_ptr n);</tt> -//! -//! <tt>static void set_next(node_ptr n, node_ptr next);</tt> -template<class NodeTraits> -class circular_slist_algorithms - /// @cond - : public detail::common_slist_algorithms<NodeTraits> - /// @endcond -{ - /// @cond - typedef detail::common_slist_algorithms<NodeTraits> base_t; - /// @endcond - public: - typedef typename NodeTraits::node node; - typedef typename NodeTraits::node_ptr node_ptr; - typedef typename NodeTraits::const_node_ptr const_node_ptr; - typedef NodeTraits node_traits; - - #if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) - - //! <b>Effects</b>: Constructs an non-used list element, putting the next - //! pointer to null: - //! <tt>NodeTraits::get_next(this_node) == node_ptr()</tt> - //! - //! <b>Complexity</b>: Constant - //! - //! <b>Throws</b>: Nothing. - static void init(node_ptr this_node); - - //! <b>Requires</b>: this_node must be in a circular list or be an empty circular list. - //! - //! <b>Effects</b>: Returns true is "this_node" is the only node of a circular list: - //! or it's a not inserted node: - //! <tt>return node_ptr() == NodeTraits::get_next(this_node) || NodeTraits::get_next(this_node) == this_node</tt> - //! - //! <b>Complexity</b>: Constant - //! - //! <b>Throws</b>: Nothing. - static bool unique(const_node_ptr this_node); - - //! <b>Effects</b>: Returns true is "this_node" has the same state as - //! if it was inited using "init(node_ptr)" - //! - //! <b>Complexity</b>: Constant - //! - //! <b>Throws</b>: Nothing. - static bool inited(const_node_ptr this_node); - - //! <b>Requires</b>: prev_node must be in a circular list or be an empty circular list. - //! - //! <b>Effects</b>: Unlinks the next node of prev_node from the circular list. - //! - //! <b>Complexity</b>: Constant - //! - //! <b>Throws</b>: Nothing. - static void unlink_after(node_ptr prev_node); - - //! <b>Requires</b>: prev_node and last_node must be in a circular list - //! or be an empty circular list. - //! - //! <b>Effects</b>: Unlinks the range (prev_node, last_node) from the circular list. - //! - //! <b>Complexity</b>: Constant - //! - //! <b>Throws</b>: Nothing. - static void unlink_after(node_ptr prev_node, node_ptr last_node); - - //! <b>Requires</b>: prev_node must be a node of a circular list. - //! - //! <b>Effects</b>: Links this_node after prev_node in the circular list. - //! - //! <b>Complexity</b>: Constant - //! - //! <b>Throws</b>: Nothing. - static void link_after(node_ptr prev_node, node_ptr this_node); - - //! <b>Requires</b>: b and e must be nodes of the same circular list or an empty range. - //! and p must be a node of a different circular list. - //! - //! <b>Effects</b>: Removes the nodes from (b, e] range from their circular list and inserts - //! them after p in p's circular list. - //! - //! <b>Complexity</b>: Constant - //! - //! <b>Throws</b>: Nothing. - static void transfer_after(node_ptr p, node_ptr b, node_ptr e); - - #endif //#if defined(BOOST_INTRUSIVE_DOXYGEN_INVOKED) - - //! <b>Effects</b>: Constructs an empty list, making this_node the only - //! node of the circular list: - //! <tt>NodeTraits::get_next(this_node) == this_node</tt>. - //! - //! <b>Complexity</b>: Constant - //! - //! <b>Throws</b>: Nothing. - static void init_header(const node_ptr &this_node) - { NodeTraits::set_next(this_node, this_node); } - - //! <b>Requires</b>: this_node and prev_init_node must be in the same circular list. - //! - //! <b>Effects</b>: Returns the previous node of this_node in the circular list starting. - //! the search from prev_init_node. The first node checked for equality - //! is NodeTraits::get_next(prev_init_node). - //! - //! <b>Complexity</b>: Linear to the number of elements between prev_init_node and this_node. - //! - //! <b>Throws</b>: Nothing. - static node_ptr get_previous_node(const node_ptr &prev_init_node, const node_ptr &this_node) - { return base_t::get_previous_node(prev_init_node, this_node); } - - //! <b>Requires</b>: this_node must be in a circular list or be an empty circular list. - //! - //! <b>Effects</b>: Returns the previous node of this_node in the circular list. - //! - //! <b>Complexity</b>: Linear to the number of elements in the circular list. - //! - //! <b>Throws</b>: Nothing. - static node_ptr get_previous_node(const node_ptr & this_node) - { return base_t::get_previous_node(this_node, this_node); } - - //! <b>Requires</b>: this_node must be in a circular list or be an empty circular list. - //! - //! <b>Effects</b>: Returns the previous node of the previous node of this_node in the circular list. - //! - //! <b>Complexity</b>: Linear to the number of elements in the circular list. - //! - //! <b>Throws</b>: Nothing. - static node_ptr get_previous_previous_node(const node_ptr & this_node) - { return get_previous_previous_node(this_node, this_node); } - - //! <b>Requires</b>: this_node and p must be in the same circular list. - //! - //! <b>Effects</b>: Returns the previous node of the previous node of this_node in the - //! circular list starting. the search from p. The first node checked - //! for equality is NodeTraits::get_next((NodeTraits::get_next(p)). - //! - //! <b>Complexity</b>: Linear to the number of elements in the circular list. - //! - //! <b>Throws</b>: Nothing. - static node_ptr get_previous_previous_node(node_ptr p, const node_ptr & this_node) - { - node_ptr p_next = NodeTraits::get_next(p); - node_ptr p_next_next = NodeTraits::get_next(p_next); - while (this_node != p_next_next){ - p = p_next; - p_next = p_next_next; - p_next_next = NodeTraits::get_next(p_next); - } - return p; - } - - //! <b>Requires</b>: this_node must be in a circular list or be an empty circular list. - //! - //! <b>Effects</b>: Returns the number of nodes in a circular list. If the circular list - //! is empty, returns 1. - //! - //! <b>Complexity</b>: Linear - //! - //! <b>Throws</b>: Nothing. - static std::size_t count(const const_node_ptr & this_node) - { - std::size_t result = 0; - const_node_ptr p = this_node; - do{ - p = NodeTraits::get_next(p); - ++result; - } while (p != this_node); - return result; - } - - //! <b>Requires</b>: this_node must be in a circular list, be an empty circular list or be inited. - //! - //! <b>Effects</b>: Unlinks the node from the circular list. - //! - //! <b>Complexity</b>: Linear to the number of elements in the circular list - //! - //! <b>Throws</b>: Nothing. - static void unlink(const node_ptr & this_node) - { - if(NodeTraits::get_next(this_node)) - base_t::unlink_after(get_previous_node(this_node)); - } - - //! <b>Requires</b>: nxt_node must be a node of a circular list. - //! - //! <b>Effects</b>: Links this_node before nxt_node in the circular list. - //! - //! <b>Complexity</b>: Linear to the number of elements in the circular list. - //! - //! <b>Throws</b>: Nothing. - static void link_before (const node_ptr & nxt_node, const node_ptr & this_node) - { base_t::link_after(get_previous_node(nxt_node), this_node); } - - //! <b>Requires</b>: this_node and other_node must be nodes inserted - //! in circular lists or be empty circular lists. - //! - //! <b>Effects</b>: Swaps the position of the nodes: this_node is inserted in - //! other_nodes position in the second circular list and the other_node is inserted - //! in this_node's position in the first circular list. - //! - //! <b>Complexity</b>: Linear to number of elements of both lists - //! - //! <b>Throws</b>: Nothing. - static void swap_nodes(const node_ptr & this_node, const node_ptr & other_node) - { - if (other_node == this_node) - return; - const node_ptr this_next = NodeTraits::get_next(this_node); - const node_ptr other_next = NodeTraits::get_next(other_node); - const bool this_null = !this_next; - const bool other_null = !other_next; - const bool this_empty = this_next == this_node; - const bool other_empty = other_next == other_node; - - if(!(other_null || other_empty)){ - NodeTraits::set_next(this_next == other_node ? other_node : get_previous_node(other_node), this_node ); - } - if(!(this_null | this_empty)){ - NodeTraits::set_next(other_next == this_node ? this_node : get_previous_node(this_node), other_node ); - } - NodeTraits::set_next(this_node, other_empty ? this_node : (other_next == this_node ? other_node : other_next) ); - NodeTraits::set_next(other_node, this_empty ? other_node : (this_next == other_node ? this_node : this_next ) ); - } - - //! <b>Effects</b>: Reverses the order of elements in the list. - //! - //! <b>Throws</b>: Nothing. - //! - //! <b>Complexity</b>: This function is linear to the contained elements. - static void reverse(const node_ptr & p) - { - node_ptr i = NodeTraits::get_next(p), e(p); - for (;;) { - node_ptr nxt(NodeTraits::get_next(i)); - if (nxt == e) - break; - base_t::transfer_after(e, i, nxt); - } - } - - //! <b>Effects</b>: Moves the node p n positions towards the end of the list. - //! - //! <b>Returns</b>: The previous node of p after the function if there has been any movement, - //! Null if n leads to no movement. - //! - //! <b>Throws</b>: Nothing. - //! - //! <b>Complexity</b>: Linear to the number of elements plus the number moved positions. - static node_ptr move_backwards(const node_ptr & p, std::size_t n) - { - //Null shift, nothing to do - if(!n) return node_ptr(); - node_ptr first = NodeTraits::get_next(p); - - //count() == 1 or 2, nothing to do - if(NodeTraits::get_next(first) == p) - return node_ptr(); - - bool end_found = false; - node_ptr new_last = node_ptr(); - - //Now find the new last node according to the shift count. - //If we find p before finding the new last node - //unlink p, shortcut the search now that we know the size of the list - //and continue. - for(std::size_t i = 1; i <= n; ++i){ - new_last = first; - first = NodeTraits::get_next(first); - if(first == p){ - //Shortcut the shift with the modulo of the size of the list - n %= i; - if(!n) - return node_ptr(); - i = 0; - //Unlink p and continue the new first node search - first = NodeTraits::get_next(p); - base_t::unlink_after(new_last); - end_found = true; - } - } - - //If the p has not been found in the previous loop, find it - //starting in the new first node and unlink it - if(!end_found){ - base_t::unlink_after(base_t::get_previous_node(first, p)); - } - - //Now link p after the new last node - base_t::link_after(new_last, p); - return new_last; - } - - //! <b>Effects</b>: Moves the node p n positions towards the beginning of the list. - //! - //! <b>Returns</b>: The previous node of p after the function if there has been any movement, - //! Null if n leads equals to no movement. - //! - //! <b>Throws</b>: Nothing. - //! - //! <b>Complexity</b>: Linear to the number of elements plus the number moved positions. - static node_ptr move_forward(const node_ptr & p, std::size_t n) - { - //Null shift, nothing to do - if(!n) return node_ptr(); - node_ptr first = node_traits::get_next(p); - - //count() == 1 or 2, nothing to do - if(node_traits::get_next(first) == p) return node_ptr(); - - //Iterate until p is found to know where the current last node is. - //If the shift count is less than the size of the list, we can also obtain - //the position of the new last node after the shift. - node_ptr old_last(first), next_to_it, new_last(p); - std::size_t distance = 1; - while(p != (next_to_it = node_traits::get_next(old_last))){ - if(++distance > n) - new_last = node_traits::get_next(new_last); - old_last = next_to_it; - } - //If the shift was bigger or equal than the size, obtain the equivalent - //forward shifts and find the new last node. - if(distance <= n){ - //Now find the equivalent forward shifts. - //Shortcut the shift with the modulo of the size of the list - std::size_t new_before_last_pos = (distance - (n % distance))% distance; - //If the shift is a multiple of the size there is nothing to do - if(!new_before_last_pos) return node_ptr(); - - for( new_last = p - ; new_before_last_pos-- - ; new_last = node_traits::get_next(new_last)){ - //empty - } - } - - //Now unlink p and link it after the new last node - base_t::unlink_after(old_last); - base_t::link_after(new_last, p); - return new_last; - } -}; - -/// @cond - -template<class NodeTraits> -struct get_algo<CircularSListAlgorithms, NodeTraits> -{ - typedef circular_slist_algorithms<NodeTraits> type; -}; - -/// @endcond - -} //namespace intrusive -} //namespace boost - -#include <boost/intrusive/detail/config_end.hpp> - -#endif //BOOST_INTRUSIVE_CIRCULAR_SLIST_ALGORITHMS_HPP |