bi-link.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2003
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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namespace Gecode { namespace Int { namespace ViewValGraph {
forceinline
BiLink::BiLink(void) {
_prev = this; _next = this;
}
forceinline BiLink*
BiLink::prev(void) const {
return _prev;
}
forceinline BiLink*
BiLink::next(void) const {
return _next;
}
forceinline void
BiLink::prev(BiLink* l) {
_prev = l;
}
forceinline void
BiLink::next(BiLink* l) {
_next = l;
}
forceinline void
BiLink::add(BiLink* l) {
l->_prev = this; l->_next = _next;
_next->_prev = l; _next = l;
}
forceinline void
BiLink::unlink(void) {
BiLink* p = _prev; BiLink* n = _next;
p->_next = n; n->_prev = p;
}
forceinline void
BiLink::mark(void) {
_next = NULL;
}
forceinline bool
BiLink::marked(void) const {
return _next == NULL;
}
forceinline bool
BiLink::empty(void) const {
return _prev == this;
}
}}}
// STATISTICS: int-prop
Gecode::Int::ViewValGraph::BiLink
Bidirectional links for edges and anchors in nodes of view-value graph.
Definition view-val-graph.hh:74
Gecode::Int::ViewValGraph::BiLink::prev
BiLink * prev(void) const
Return previous element.
Definition bi-link.hpp:42
Gecode::Int::ViewValGraph::BiLink::add
void add(BiLink *l)
Add l after this element.
Definition bi-link.hpp:59
Gecode::Int::ViewValGraph::BiLink::unlink
void unlink(void)
Unlink this element.
Definition bi-link.hpp:64
Gecode::Int::ViewValGraph::BiLink::BiLink
BiLink(void)
Initialize as empty (self referenced).
Definition bi-link.hpp:37
Gecode::Int::ViewValGraph::BiLink::empty
bool empty(void) const
Whether element has no previous and next element.
Definition bi-link.hpp:78
Gecode::Int::ViewValGraph::BiLink::marked
bool marked(void) const
Whether element is marked.
Definition bi-link.hpp:74
Gecode::Int::ViewValGraph::BiLink::mark
void mark(void)
Mark element (invalidates next element pointer).
Definition bi-link.hpp:70
Gecode::Int::ViewValGraph::BiLink::next
BiLink * next(void) const
Return next element.
Definition bi-link.hpp:46
Gecode::Int::ViewValGraph
Support classes for propagators using a view-value graph.
Gecode::Int
Finite domain integers.
Gecode
Gecode toplevel namespace
forceinline
#define forceinline
Definition config.hpp:187