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Diffstat (limited to 'extern/quadriflow/3rd/lemon-1.3.1/lemon/bits/vector_map.h')
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diff --git a/extern/quadriflow/3rd/lemon-1.3.1/lemon/bits/vector_map.h b/extern/quadriflow/3rd/lemon-1.3.1/lemon/bits/vector_map.h new file mode 100644 index 00000000000..d60841defbd --- /dev/null +++ b/extern/quadriflow/3rd/lemon-1.3.1/lemon/bits/vector_map.h @@ -0,0 +1,244 @@ +/* -*- mode: C++; indent-tabs-mode: nil; -*- + * + * This file is a part of LEMON, a generic C++ optimization library. + * + * Copyright (C) 2003-2009 + * 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_VECTOR_MAP_H +#define LEMON_BITS_VECTOR_MAP_H + +#include <vector> +#include <algorithm> + +#include <lemon/core.h> +#include <lemon/bits/alteration_notifier.h> + +#include <lemon/concept_check.h> +#include <lemon/concepts/maps.h> + +//\ingroup graphbits +// +//\file +//\brief Vector based graph maps. +namespace lemon { + + // \ingroup graphbits + // + // \brief Graph map based on the std::vector storage. + // + // The VectorMap template class is graph map structure that automatically + // updates the map when a key is added to or erased from the graph. + // This map type uses std::vector to store the values. + // + // \tparam _Graph The graph this map is attached to. + // \tparam _Item The item type of the graph items. + // \tparam _Value The value type of the map. + template <typename _Graph, typename _Item, typename _Value> + class VectorMap + : public ItemSetTraits<_Graph, _Item>::ItemNotifier::ObserverBase { + private: + + // The container type of the map. + typedef std::vector<_Value> Container; + + public: + + // The graph type of the map. + typedef _Graph GraphType; + // The item type of the map. + typedef _Item Item; + // The reference map tag. + typedef True ReferenceMapTag; + + // The key type of the map. + typedef _Item Key; + // The value type of the map. + typedef _Value Value; + + // The notifier type. + typedef typename ItemSetTraits<_Graph, _Item>::ItemNotifier Notifier; + + // The map type. + typedef VectorMap Map; + + // The reference type of the map; + typedef typename Container::reference Reference; + // The const reference type of the map; + typedef typename Container::const_reference ConstReference; + + private: + + // The base class of the map. + typedef typename Notifier::ObserverBase Parent; + + public: + + // \brief Constructor to attach the new map into the notifier. + // + // It constructs a map and attachs it into the notifier. + // It adds all the items of the graph to the map. + VectorMap(const GraphType& graph) { + Parent::attach(graph.notifier(Item())); + container.resize(Parent::notifier()->maxId() + 1); + } + + // \brief Constructor uses given value to initialize the map. + // + // It constructs a map uses a given value to initialize the map. + // It adds all the items of the graph to the map. + VectorMap(const GraphType& graph, const Value& value) { + Parent::attach(graph.notifier(Item())); + container.resize(Parent::notifier()->maxId() + 1, value); + } + + private: + // \brief Copy constructor + // + // Copy constructor. + VectorMap(const VectorMap& _copy) : Parent() { + if (_copy.attached()) { + Parent::attach(*_copy.notifier()); + container = _copy.container; + } + } + + // \brief Assign operator. + // + // This operator assigns for each item in the map the + // value mapped to the same item in the copied map. + // The parameter map should be indiced with the same + // itemset because this assign operator does not change + // the container of the map. + VectorMap& operator=(const VectorMap& cmap) { + return operator=<VectorMap>(cmap); + } + + + // \brief Template assign operator. + // + // The given parameter should conform to the ReadMap + // concecpt and could be indiced by the current item set of + // the NodeMap. In this case the value for each item + // is assigned by the value of the given ReadMap. + template <typename CMap> + VectorMap& operator=(const CMap& cmap) { + checkConcept<concepts::ReadMap<Key, _Value>, CMap>(); + const typename Parent::Notifier* nf = Parent::notifier(); + Item it; + for (nf->first(it); it != INVALID; nf->next(it)) { + set(it, cmap[it]); + } + return *this; + } + + public: + + // \brief The subcript operator. + // + // The subscript operator. The map can be subscripted by the + // actual items of the graph. + Reference operator[](const Key& key) { + return container[Parent::notifier()->id(key)]; + } + + // \brief The const subcript operator. + // + // The const subscript operator. The map can be subscripted by the + // actual items of the graph. + ConstReference operator[](const Key& key) const { + return container[Parent::notifier()->id(key)]; + } + + + // \brief The setter function of the map. + // + // It the same as operator[](key) = value expression. + void set(const Key& key, const Value& value) { + (*this)[key] = value; + } + + protected: + + // \brief Adds a new key to the map. + // + // It adds a new key to the map. It is called by the observer notifier + // and it overrides the add() member function of the observer base. + virtual void add(const Key& key) { + int id = Parent::notifier()->id(key); + if (id >= int(container.size())) { + container.resize(id + 1); + } + } + + // \brief Adds more new keys to the map. + // + // It adds more new keys to the map. It is called by the observer notifier + // and it overrides the add() member function of the observer base. + virtual void add(const std::vector<Key>& keys) { + int max = container.size() - 1; + for (int i = 0; i < int(keys.size()); ++i) { + int id = Parent::notifier()->id(keys[i]); + if (id >= max) { + max = id; + } + } + container.resize(max + 1); + } + + // \brief Erase a key from the map. + // + // Erase a key from the map. It is called by the observer notifier + // and it overrides the erase() member function of the observer base. + virtual void erase(const Key& key) { + container[Parent::notifier()->id(key)] = Value(); + } + + // \brief Erase more keys from the map. + // + // It erases more keys from the map. It is called by the observer notifier + // and it overrides the erase() member function of the observer base. + virtual void erase(const std::vector<Key>& keys) { + for (int i = 0; i < int(keys.size()); ++i) { + container[Parent::notifier()->id(keys[i])] = Value(); + } + } + + // \brief Build the map. + // + // It builds the map. It is called by the observer notifier + // and it overrides the build() member function of the observer base. + virtual void build() { + int size = Parent::notifier()->maxId() + 1; + container.reserve(size); + container.resize(size); + } + + // \brief Clear the map. + // + // It erases all items from the map. It is called by the observer notifier + // and it overrides the clear() member function of the observer base. + virtual void clear() { + container.clear(); + } + + private: + + Container container; + + }; + +} + +#endif |