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/* -*- mode: C++; indent-tabs-mode: nil; -*-
*
* This file is a part of LEMON, a generic C++ optimization library.
*
* Copyright (C) 2003-2013
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
* (Egervary Research Group on Combinatorial Optimization, EGRES).
*
* Permission to use, modify and distribute this software is granted
* provided that this copyright notice appears in all copies. For
* precise terms see the accompanying LICENSE file.
*
* This software is provided "AS IS" with no warranty of any kind,
* express or implied, and with no claim as to its suitability for any
* purpose.
*
*/
#ifndef LEMON_BITS_GRAPH_ADAPTOR_EXTENDER_H
#define LEMON_BITS_GRAPH_ADAPTOR_EXTENDER_H
#include <lemon/core.h>
#include <lemon/error.h>
namespace lemon {
template <typename _Digraph>
class DigraphAdaptorExtender : public _Digraph {
typedef _Digraph Parent;
public:
typedef _Digraph Digraph;
typedef DigraphAdaptorExtender Adaptor;
// Base extensions
typedef typename Parent::Node Node;
typedef typename Parent::Arc Arc;
int maxId(Node) const {
return Parent::maxNodeId();
}
int maxId(Arc) const {
return Parent::maxArcId();
}
Node fromId(int id, Node) const {
return Parent::nodeFromId(id);
}
Arc fromId(int id, Arc) const {
return Parent::arcFromId(id);
}
Node oppositeNode(const Node &n, const Arc &e) const {
if (n == Parent::source(e))
return Parent::target(e);
else if(n==Parent::target(e))
return Parent::source(e);
else
return INVALID;
}
class NodeIt : public Node {
const Adaptor* _adaptor;
public:
NodeIt() {}
NodeIt(Invalid i) : Node(i) { }
explicit NodeIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
_adaptor->first(static_cast<Node&>(*this));
}
NodeIt(const Adaptor& adaptor, const Node& node)
: Node(node), _adaptor(&adaptor) {}
NodeIt& operator++() {
_adaptor->next(*this);
return *this;
}
};
class ArcIt : public Arc {
const Adaptor* _adaptor;
public:
ArcIt() { }
ArcIt(Invalid i) : Arc(i) { }
explicit ArcIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
_adaptor->first(static_cast<Arc&>(*this));
}
ArcIt(const Adaptor& adaptor, const Arc& e) :
Arc(e), _adaptor(&adaptor) { }
ArcIt& operator++() {
_adaptor->next(*this);
return *this;
}
};
class OutArcIt : public Arc {
const Adaptor* _adaptor;
public:
OutArcIt() { }
OutArcIt(Invalid i) : Arc(i) { }
OutArcIt(const Adaptor& adaptor, const Node& node)
: _adaptor(&adaptor) {
_adaptor->firstOut(*this, node);
}
OutArcIt(const Adaptor& adaptor, const Arc& arc)
: Arc(arc), _adaptor(&adaptor) {}
OutArcIt& operator++() {
_adaptor->nextOut(*this);
return *this;
}
};
class InArcIt : public Arc {
const Adaptor* _adaptor;
public:
InArcIt() { }
InArcIt(Invalid i) : Arc(i) { }
InArcIt(const Adaptor& adaptor, const Node& node)
: _adaptor(&adaptor) {
_adaptor->firstIn(*this, node);
}
InArcIt(const Adaptor& adaptor, const Arc& arc) :
Arc(arc), _adaptor(&adaptor) {}
InArcIt& operator++() {
_adaptor->nextIn(*this);
return *this;
}
};
Node baseNode(const OutArcIt &e) const {
return Parent::source(e);
}
Node runningNode(const OutArcIt &e) const {
return Parent::target(e);
}
Node baseNode(const InArcIt &e) const {
return Parent::target(e);
}
Node runningNode(const InArcIt &e) const {
return Parent::source(e);
}
};
template <typename _Graph>
class GraphAdaptorExtender : public _Graph {
typedef _Graph Parent;
public:
typedef _Graph Graph;
typedef GraphAdaptorExtender Adaptor;
typedef True UndirectedTag;
typedef typename Parent::Node Node;
typedef typename Parent::Arc Arc;
typedef typename Parent::Edge Edge;
// Graph extension
int maxId(Node) const {
return Parent::maxNodeId();
}
int maxId(Arc) const {
return Parent::maxArcId();
}
int maxId(Edge) const {
return Parent::maxEdgeId();
}
Node fromId(int id, Node) const {
return Parent::nodeFromId(id);
}
Arc fromId(int id, Arc) const {
return Parent::arcFromId(id);
}
Edge fromId(int id, Edge) const {
return Parent::edgeFromId(id);
}
Node oppositeNode(const Node &n, const Edge &e) const {
if( n == Parent::u(e))
return Parent::v(e);
else if( n == Parent::v(e))
return Parent::u(e);
else
return INVALID;
}
Arc oppositeArc(const Arc &a) const {
return Parent::direct(a, !Parent::direction(a));
}
using Parent::direct;
Arc direct(const Edge &e, const Node &s) const {
return Parent::direct(e, Parent::u(e) == s);
}
class NodeIt : public Node {
const Adaptor* _adaptor;
public:
NodeIt() {}
NodeIt(Invalid i) : Node(i) { }
explicit NodeIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
_adaptor->first(static_cast<Node&>(*this));
}
NodeIt(const Adaptor& adaptor, const Node& node)
: Node(node), _adaptor(&adaptor) {}
NodeIt& operator++() {
_adaptor->next(*this);
return *this;
}
};
class ArcIt : public Arc {
const Adaptor* _adaptor;
public:
ArcIt() { }
ArcIt(Invalid i) : Arc(i) { }
explicit ArcIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
_adaptor->first(static_cast<Arc&>(*this));
}
ArcIt(const Adaptor& adaptor, const Arc& e) :
Arc(e), _adaptor(&adaptor) { }
ArcIt& operator++() {
_adaptor->next(*this);
return *this;
}
};
class OutArcIt : public Arc {
const Adaptor* _adaptor;
public:
OutArcIt() { }
OutArcIt(Invalid i) : Arc(i) { }
OutArcIt(const Adaptor& adaptor, const Node& node)
: _adaptor(&adaptor) {
_adaptor->firstOut(*this, node);
}
OutArcIt(const Adaptor& adaptor, const Arc& arc)
: Arc(arc), _adaptor(&adaptor) {}
OutArcIt& operator++() {
_adaptor->nextOut(*this);
return *this;
}
};
class InArcIt : public Arc {
const Adaptor* _adaptor;
public:
InArcIt() { }
InArcIt(Invalid i) : Arc(i) { }
InArcIt(const Adaptor& adaptor, const Node& node)
: _adaptor(&adaptor) {
_adaptor->firstIn(*this, node);
}
InArcIt(const Adaptor& adaptor, const Arc& arc) :
Arc(arc), _adaptor(&adaptor) {}
InArcIt& operator++() {
_adaptor->nextIn(*this);
return *this;
}
};
class EdgeIt : public Parent::Edge {
const Adaptor* _adaptor;
public:
EdgeIt() { }
EdgeIt(Invalid i) : Edge(i) { }
explicit EdgeIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
_adaptor->first(static_cast<Edge&>(*this));
}
EdgeIt(const Adaptor& adaptor, const Edge& e) :
Edge(e), _adaptor(&adaptor) { }
EdgeIt& operator++() {
_adaptor->next(*this);
return *this;
}
};
class IncEdgeIt : public Edge {
friend class GraphAdaptorExtender;
const Adaptor* _adaptor;
bool direction;
public:
IncEdgeIt() { }
IncEdgeIt(Invalid i) : Edge(i), direction(false) { }
IncEdgeIt(const Adaptor& adaptor, const Node &n) : _adaptor(&adaptor) {
_adaptor->firstInc(static_cast<Edge&>(*this), direction, n);
}
IncEdgeIt(const Adaptor& adaptor, const Edge &e, const Node &n)
: _adaptor(&adaptor), Edge(e) {
direction = (_adaptor->u(e) == n);
}
IncEdgeIt& operator++() {
_adaptor->nextInc(*this, direction);
return *this;
}
};
Node baseNode(const OutArcIt &a) const {
return Parent::source(a);
}
Node runningNode(const OutArcIt &a) const {
return Parent::target(a);
}
Node baseNode(const InArcIt &a) const {
return Parent::target(a);
}
Node runningNode(const InArcIt &a) const {
return Parent::source(a);
}
Node baseNode(const IncEdgeIt &e) const {
return e.direction ? Parent::u(e) : Parent::v(e);
}
Node runningNode(const IncEdgeIt &e) const {
return e.direction ? Parent::v(e) : Parent::u(e);
}
};
}
#endif
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