628 lines
14 KiB
C
628 lines
14 KiB
C
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/* -*- mode: C++; indent-tabs-mode: nil; -*-
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*
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* This file is a part of LEMON, a generic C++ optimization library.
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*
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* Copyright (C) 2003-2013
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* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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* (Egervary Research Group on Combinatorial Optimization, EGRES).
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*
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* Permission to use, modify and distribute this software is granted
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* provided that this copyright notice appears in all copies. For
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* precise terms see the accompanying LICENSE file.
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*
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* This software is provided "AS IS" with no warranty of any kind,
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* express or implied, and with no claim as to its suitability for any
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* purpose.
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*
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*/
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#ifndef LEMON_BITS_EDGE_SET_EXTENDER_H
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#define LEMON_BITS_EDGE_SET_EXTENDER_H
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#include <lemon/core.h>
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#include <lemon/error.h>
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#include <lemon/bits/default_map.h>
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#include <lemon/bits/map_extender.h>
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//\ingroup digraphbits
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//\file
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//\brief Extenders for the arc set types
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namespace lemon {
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// \ingroup digraphbits
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//
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// \brief Extender for the ArcSets
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template <typename Base>
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class ArcSetExtender : public Base {
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typedef Base Parent;
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public:
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typedef ArcSetExtender Digraph;
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// Base extensions
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typedef typename Parent::Node Node;
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typedef typename Parent::Arc Arc;
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int maxId(Node) const {
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return Parent::maxNodeId();
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}
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int maxId(Arc) const {
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return Parent::maxArcId();
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}
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Node fromId(int id, Node) const {
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return Parent::nodeFromId(id);
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}
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Arc fromId(int id, Arc) const {
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return Parent::arcFromId(id);
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}
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Node oppositeNode(const Node &n, const Arc &e) const {
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if (n == Parent::source(e))
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return Parent::target(e);
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else if(n==Parent::target(e))
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return Parent::source(e);
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else
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return INVALID;
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}
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// Alteration notifier extensions
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// The arc observer registry.
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typedef AlterationNotifier<ArcSetExtender, Arc> ArcNotifier;
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protected:
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mutable ArcNotifier arc_notifier;
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public:
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using Parent::notifier;
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// Gives back the arc alteration notifier.
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ArcNotifier& notifier(Arc) const {
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return arc_notifier;
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}
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// Iterable extensions
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class NodeIt : public Node {
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const Digraph* digraph;
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public:
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NodeIt() {}
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NodeIt(Invalid i) : Node(i) { }
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explicit NodeIt(const Digraph& _graph) : digraph(&_graph) {
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_graph.first(static_cast<Node&>(*this));
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}
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NodeIt(const Digraph& _graph, const Node& node)
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: Node(node), digraph(&_graph) {}
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NodeIt& operator++() {
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digraph->next(*this);
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return *this;
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}
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};
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class ArcIt : public Arc {
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const Digraph* digraph;
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public:
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ArcIt() { }
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ArcIt(Invalid i) : Arc(i) { }
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explicit ArcIt(const Digraph& _graph) : digraph(&_graph) {
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_graph.first(static_cast<Arc&>(*this));
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}
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ArcIt(const Digraph& _graph, const Arc& e) :
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Arc(e), digraph(&_graph) { }
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ArcIt& operator++() {
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digraph->next(*this);
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return *this;
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}
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};
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class OutArcIt : public Arc {
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const Digraph* digraph;
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public:
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OutArcIt() { }
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OutArcIt(Invalid i) : Arc(i) { }
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OutArcIt(const Digraph& _graph, const Node& node)
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: digraph(&_graph) {
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_graph.firstOut(*this, node);
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}
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OutArcIt(const Digraph& _graph, const Arc& arc)
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: Arc(arc), digraph(&_graph) {}
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OutArcIt& operator++() {
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digraph->nextOut(*this);
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return *this;
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}
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};
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class InArcIt : public Arc {
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const Digraph* digraph;
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public:
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InArcIt() { }
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InArcIt(Invalid i) : Arc(i) { }
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InArcIt(const Digraph& _graph, const Node& node)
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: digraph(&_graph) {
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_graph.firstIn(*this, node);
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}
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InArcIt(const Digraph& _graph, const Arc& arc) :
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Arc(arc), digraph(&_graph) {}
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InArcIt& operator++() {
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digraph->nextIn(*this);
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return *this;
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}
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};
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// \brief Base node of the iterator
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//
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// Returns the base node (ie. the source in this case) of the iterator
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Node baseNode(const OutArcIt &e) const {
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return Parent::source(static_cast<const Arc&>(e));
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}
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// \brief Running node of the iterator
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//
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// Returns the running node (ie. the target in this case) of the
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// iterator
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Node runningNode(const OutArcIt &e) const {
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return Parent::target(static_cast<const Arc&>(e));
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}
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// \brief Base node of the iterator
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//
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// Returns the base node (ie. the target in this case) of the iterator
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Node baseNode(const InArcIt &e) const {
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return Parent::target(static_cast<const Arc&>(e));
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}
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// \brief Running node of the iterator
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//
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// Returns the running node (ie. the source in this case) of the
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// iterator
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Node runningNode(const InArcIt &e) const {
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return Parent::source(static_cast<const Arc&>(e));
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}
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using Parent::first;
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// Mappable extension
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template <typename _Value>
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class ArcMap
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: public MapExtender<DefaultMap<Digraph, Arc, _Value> > {
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typedef MapExtender<DefaultMap<Digraph, Arc, _Value> > Parent;
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public:
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explicit ArcMap(const Digraph& _g)
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: Parent(_g) {}
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ArcMap(const Digraph& _g, const _Value& _v)
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: Parent(_g, _v) {}
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ArcMap& operator=(const ArcMap& cmap) {
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return operator=<ArcMap>(cmap);
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}
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template <typename CMap>
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ArcMap& operator=(const CMap& cmap) {
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Parent::operator=(cmap);
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return *this;
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}
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};
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// Alteration extension
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Arc addArc(const Node& from, const Node& to) {
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Arc arc = Parent::addArc(from, to);
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notifier(Arc()).add(arc);
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return arc;
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}
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void clear() {
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notifier(Arc()).clear();
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Parent::clear();
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}
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void erase(const Arc& arc) {
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notifier(Arc()).erase(arc);
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Parent::erase(arc);
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}
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ArcSetExtender() {
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arc_notifier.setContainer(*this);
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}
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~ArcSetExtender() {
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arc_notifier.clear();
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}
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};
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// \ingroup digraphbits
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//
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// \brief Extender for the EdgeSets
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template <typename Base>
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class EdgeSetExtender : public Base {
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typedef Base Parent;
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public:
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typedef EdgeSetExtender Graph;
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typedef True UndirectedTag;
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typedef typename Parent::Node Node;
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typedef typename Parent::Arc Arc;
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typedef typename Parent::Edge Edge;
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int maxId(Node) const {
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return Parent::maxNodeId();
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}
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int maxId(Arc) const {
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return Parent::maxArcId();
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}
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int maxId(Edge) const {
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return Parent::maxEdgeId();
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}
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Node fromId(int id, Node) const {
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return Parent::nodeFromId(id);
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}
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Arc fromId(int id, Arc) const {
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return Parent::arcFromId(id);
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}
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Edge fromId(int id, Edge) const {
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return Parent::edgeFromId(id);
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}
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Node oppositeNode(const Node &n, const Edge &e) const {
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if( n == Parent::u(e))
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return Parent::v(e);
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else if( n == Parent::v(e))
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return Parent::u(e);
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else
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return INVALID;
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}
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Arc oppositeArc(const Arc &e) const {
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return Parent::direct(e, !Parent::direction(e));
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}
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using Parent::direct;
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Arc direct(const Edge &e, const Node &s) const {
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return Parent::direct(e, Parent::u(e) == s);
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}
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typedef AlterationNotifier<EdgeSetExtender, Arc> ArcNotifier;
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typedef AlterationNotifier<EdgeSetExtender, Edge> EdgeNotifier;
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protected:
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mutable ArcNotifier arc_notifier;
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mutable EdgeNotifier edge_notifier;
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public:
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using Parent::notifier;
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ArcNotifier& notifier(Arc) const {
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return arc_notifier;
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}
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EdgeNotifier& notifier(Edge) const {
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return edge_notifier;
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}
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class NodeIt : public Node {
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const Graph* graph;
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public:
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NodeIt() {}
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NodeIt(Invalid i) : Node(i) { }
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explicit NodeIt(const Graph& _graph) : graph(&_graph) {
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_graph.first(static_cast<Node&>(*this));
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}
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NodeIt(const Graph& _graph, const Node& node)
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: Node(node), graph(&_graph) {}
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NodeIt& operator++() {
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graph->next(*this);
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return *this;
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}
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};
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class ArcIt : public Arc {
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const Graph* graph;
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public:
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ArcIt() { }
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ArcIt(Invalid i) : Arc(i) { }
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explicit ArcIt(const Graph& _graph) : graph(&_graph) {
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_graph.first(static_cast<Arc&>(*this));
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}
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ArcIt(const Graph& _graph, const Arc& e) :
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Arc(e), graph(&_graph) { }
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ArcIt& operator++() {
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graph->next(*this);
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return *this;
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}
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};
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class OutArcIt : public Arc {
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const Graph* graph;
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public:
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OutArcIt() { }
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OutArcIt(Invalid i) : Arc(i) { }
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OutArcIt(const Graph& _graph, const Node& node)
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: graph(&_graph) {
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_graph.firstOut(*this, node);
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}
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OutArcIt(const Graph& _graph, const Arc& arc)
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: Arc(arc), graph(&_graph) {}
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OutArcIt& operator++() {
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graph->nextOut(*this);
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return *this;
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}
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};
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class InArcIt : public Arc {
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const Graph* graph;
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public:
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InArcIt() { }
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InArcIt(Invalid i) : Arc(i) { }
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InArcIt(const Graph& _graph, const Node& node)
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: graph(&_graph) {
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_graph.firstIn(*this, node);
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}
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||
|
|
InArcIt(const Graph& _graph, const Arc& arc) :
|
||
|
|
Arc(arc), graph(&_graph) {}
|
||
|
|
|
||
|
|
InArcIt& operator++() {
|
||
|
|
graph->nextIn(*this);
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
class EdgeIt : public Parent::Edge {
|
||
|
|
const Graph* graph;
|
||
|
|
public:
|
||
|
|
|
||
|
|
EdgeIt() { }
|
||
|
|
|
||
|
|
EdgeIt(Invalid i) : Edge(i) { }
|
||
|
|
|
||
|
|
explicit EdgeIt(const Graph& _graph) : graph(&_graph) {
|
||
|
|
_graph.first(static_cast<Edge&>(*this));
|
||
|
|
}
|
||
|
|
|
||
|
|
EdgeIt(const Graph& _graph, const Edge& e) :
|
||
|
|
Edge(e), graph(&_graph) { }
|
||
|
|
|
||
|
|
EdgeIt& operator++() {
|
||
|
|
graph->next(*this);
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
class IncEdgeIt : public Parent::Edge {
|
||
|
|
friend class EdgeSetExtender;
|
||
|
|
const Graph* graph;
|
||
|
|
bool direction;
|
||
|
|
public:
|
||
|
|
|
||
|
|
IncEdgeIt() { }
|
||
|
|
|
||
|
|
IncEdgeIt(Invalid i) : Edge(i), direction(false) { }
|
||
|
|
|
||
|
|
IncEdgeIt(const Graph& _graph, const Node &n) : graph(&_graph) {
|
||
|
|
_graph.firstInc(*this, direction, n);
|
||
|
|
}
|
||
|
|
|
||
|
|
IncEdgeIt(const Graph& _graph, const Edge &ue, const Node &n)
|
||
|
|
: graph(&_graph), Edge(ue) {
|
||
|
|
direction = (_graph.source(ue) == n);
|
||
|
|
}
|
||
|
|
|
||
|
|
IncEdgeIt& operator++() {
|
||
|
|
graph->nextInc(*this, direction);
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// \brief Base node of the iterator
|
||
|
|
//
|
||
|
|
// Returns the base node (ie. the source in this case) of the iterator
|
||
|
|
Node baseNode(const OutArcIt &e) const {
|
||
|
|
return Parent::source(static_cast<const Arc&>(e));
|
||
|
|
}
|
||
|
|
// \brief Running node of the iterator
|
||
|
|
//
|
||
|
|
// Returns the running node (ie. the target in this case) of the
|
||
|
|
// iterator
|
||
|
|
Node runningNode(const OutArcIt &e) const {
|
||
|
|
return Parent::target(static_cast<const Arc&>(e));
|
||
|
|
}
|
||
|
|
|
||
|
|
// \brief Base node of the iterator
|
||
|
|
//
|
||
|
|
// Returns the base node (ie. the target in this case) of the iterator
|
||
|
|
Node baseNode(const InArcIt &e) const {
|
||
|
|
return Parent::target(static_cast<const Arc&>(e));
|
||
|
|
}
|
||
|
|
// \brief Running node of the iterator
|
||
|
|
//
|
||
|
|
// Returns the running node (ie. the source in this case) of the
|
||
|
|
// iterator
|
||
|
|
Node runningNode(const InArcIt &e) const {
|
||
|
|
return Parent::source(static_cast<const Arc&>(e));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Base node of the iterator
|
||
|
|
//
|
||
|
|
// Returns the base node of the iterator
|
||
|
|
Node baseNode(const IncEdgeIt &e) const {
|
||
|
|
return e.direction ? this->u(e) : this->v(e);
|
||
|
|
}
|
||
|
|
// Running node of the iterator
|
||
|
|
//
|
||
|
|
// Returns the running node of the iterator
|
||
|
|
Node runningNode(const IncEdgeIt &e) const {
|
||
|
|
return e.direction ? this->v(e) : this->u(e);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
template <typename _Value>
|
||
|
|
class ArcMap
|
||
|
|
: public MapExtender<DefaultMap<Graph, Arc, _Value> > {
|
||
|
|
typedef MapExtender<DefaultMap<Graph, Arc, _Value> > Parent;
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit ArcMap(const Graph& _g)
|
||
|
|
: Parent(_g) {}
|
||
|
|
ArcMap(const Graph& _g, const _Value& _v)
|
||
|
|
: Parent(_g, _v) {}
|
||
|
|
|
||
|
|
ArcMap& operator=(const ArcMap& cmap) {
|
||
|
|
return operator=<ArcMap>(cmap);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename CMap>
|
||
|
|
ArcMap& operator=(const CMap& cmap) {
|
||
|
|
Parent::operator=(cmap);
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
template <typename _Value>
|
||
|
|
class EdgeMap
|
||
|
|
: public MapExtender<DefaultMap<Graph, Edge, _Value> > {
|
||
|
|
typedef MapExtender<DefaultMap<Graph, Edge, _Value> > Parent;
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit EdgeMap(const Graph& _g)
|
||
|
|
: Parent(_g) {}
|
||
|
|
|
||
|
|
EdgeMap(const Graph& _g, const _Value& _v)
|
||
|
|
: Parent(_g, _v) {}
|
||
|
|
|
||
|
|
EdgeMap& operator=(const EdgeMap& cmap) {
|
||
|
|
return operator=<EdgeMap>(cmap);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename CMap>
|
||
|
|
EdgeMap& operator=(const CMap& cmap) {
|
||
|
|
Parent::operator=(cmap);
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
// Alteration extension
|
||
|
|
|
||
|
|
Edge addEdge(const Node& from, const Node& to) {
|
||
|
|
Edge edge = Parent::addEdge(from, to);
|
||
|
|
notifier(Edge()).add(edge);
|
||
|
|
std::vector<Arc> arcs;
|
||
|
|
arcs.push_back(Parent::direct(edge, true));
|
||
|
|
arcs.push_back(Parent::direct(edge, false));
|
||
|
|
notifier(Arc()).add(arcs);
|
||
|
|
return edge;
|
||
|
|
}
|
||
|
|
|
||
|
|
void clear() {
|
||
|
|
notifier(Arc()).clear();
|
||
|
|
notifier(Edge()).clear();
|
||
|
|
Parent::clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
void erase(const Edge& edge) {
|
||
|
|
std::vector<Arc> arcs;
|
||
|
|
arcs.push_back(Parent::direct(edge, true));
|
||
|
|
arcs.push_back(Parent::direct(edge, false));
|
||
|
|
notifier(Arc()).erase(arcs);
|
||
|
|
notifier(Edge()).erase(edge);
|
||
|
|
Parent::erase(edge);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
EdgeSetExtender() {
|
||
|
|
arc_notifier.setContainer(*this);
|
||
|
|
edge_notifier.setContainer(*this);
|
||
|
|
}
|
||
|
|
|
||
|
|
~EdgeSetExtender() {
|
||
|
|
edge_notifier.clear();
|
||
|
|
arc_notifier.clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|