[1978] | 1 | /* -*- C++ -*- |
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| 2 | * |
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| 3 | * This file is a part of LEMON, a generic C++ optimization library |
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| 4 | * |
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| 5 | * Copyright (C) 2003-2006 |
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| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 8 | * |
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| 9 | * Permission to use, modify and distribute this software is granted |
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| 10 | * provided that this copyright notice appears in all copies. For |
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| 11 | * precise terms see the accompanying LICENSE file. |
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| 12 | * |
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| 13 | * This software is provided "AS IS" with no warranty of any kind, |
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| 14 | * express or implied, and with no claim as to its suitability for any |
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| 15 | * purpose. |
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| 16 | * |
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| 17 | */ |
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| 18 | |
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| 19 | #ifndef LEMON_LIST_GRAPH_H |
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| 20 | #define LEMON_LIST_GRAPH_H |
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| 21 | |
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| 22 | ///\ingroup graphs |
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| 23 | ///\file |
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| 24 | ///\brief Virtual map support. |
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| 25 | |
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| 26 | namespace lemon { |
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| 27 | |
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| 28 | ///Base class of the virtual maps. |
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| 29 | template<class K, class V> |
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| 30 | class VMapBase |
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| 31 | { |
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| 32 | public: |
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| 33 | ///\e |
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| 34 | typedef K Key; |
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| 35 | ///\e |
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| 36 | typedef V Value; |
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| 37 | |
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| 38 | ///\e |
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| 39 | virtual Value operator[](const Key &) const { return Value();} |
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| 40 | ///\e |
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| 41 | virtual void set(const Key &,const Value &) {} |
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| 42 | }; |
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| 43 | |
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| 44 | ///Base class of the virtual reference maps. |
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| 45 | template<class K, class V> |
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| 46 | class VRefMapBase |
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| 47 | { |
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| 48 | public: |
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| 49 | ///\e |
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| 50 | typedef K Key; |
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| 51 | ///\e |
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| 52 | typedef V Value; |
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| 53 | |
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| 54 | ///\e |
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| 55 | virtual Value& operator[](Key &) = 0; |
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| 56 | ///\e |
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| 57 | virtual Value& operator[](const Key &) const = 0; |
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| 58 | ///\e |
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| 59 | virtual void set(const Key &,const Value &) = 0; |
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| 60 | }; |
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| 61 | |
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| 62 | ///Makes a virtual map from a \ref concept::ReadMap "ReadMap" |
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| 63 | template<class M, class K=typename M::Key,class V=typename M::Value> |
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| 64 | class VReadMap : public VMapBase<K,V> |
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| 65 | { |
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| 66 | const M ↦ |
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| 67 | public: |
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| 68 | ///\e |
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| 69 | VReadMap(const M &m) : map(m) {} |
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| 70 | virtual Value operator[](const Key &k) const { return map[k];} |
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| 71 | }; |
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| 72 | |
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| 73 | ///Function interface for \ref VReadMap. |
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| 74 | template<class M, class K=typename M::Key,class V=typename M::Value> |
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| 75 | vReadMap(const M& m) {return VReadMap<M,K,V>(m);} |
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| 76 | |
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| 77 | ///Makes a virtual map from a \ref concept::WriteMap "WriteMap" |
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| 78 | template<class M, class K=typename M::Key,class V=typename M::Value> |
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| 79 | class VWriteMap :public VMapBase<K,V> |
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| 80 | { |
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| 81 | M ↦ |
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| 82 | public: |
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| 83 | ///\e |
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| 84 | VWriteMap(M &m) : map(m) {} |
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| 85 | virtual void set(const Key &k,const Value &v) { map.set(k,v);} |
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| 86 | }; |
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| 87 | |
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| 88 | ///Function interface for \ref VWriteMap. |
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| 89 | template<class M, class K=typename M::Key,class V=typename M::Value> |
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| 90 | vWriteMap(const M& m) {return VReadMap<M,K,V>(m);} |
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| 91 | |
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| 92 | ///Makes a virtual map from a \ref concept::ReadWriteMap "ReadWriteMap" |
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| 93 | template<class M, class K=typename M::Key,class V=typename M::Value> |
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| 94 | class VReadWriteMap :public VMapBase<K,V> |
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| 95 | { |
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| 96 | M ↦ |
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| 97 | public: |
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| 98 | ///\e |
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| 99 | VReadWriteMap(M &m) : map(m) {} |
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| 100 | virtual Value operator[](const Key &k) const { return map[k];} |
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| 101 | virtual void set(const Key &k,const Value &v) { map.set(k,v);} |
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| 102 | }; |
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| 103 | |
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| 104 | ///Function interface for \ref VReadWriteMap. |
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| 105 | template<class M, class K=typename M::Key,class V=typename M::Value> |
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| 106 | vReadWriteMap(const M& m) {return VReadMap<M,K,V>(m);} |
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| 107 | |
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| 108 | /// @} |
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| 109 | } //namespace lemon |
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| 110 | |
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| 111 | |
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| 112 | #endif |
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