[209] | 1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
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[170] | 2 | * |
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[209] | 3 | * This file is a part of LEMON, a generic C++ optimization library. |
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[170] | 4 | * |
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| 5 | * Copyright (C) 2003-2008 |
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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 | #include <lemon/concepts/digraph.h> |
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| 20 | #include <lemon/smart_graph.h> |
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| 21 | #include <lemon/list_graph.h> |
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[228] | 22 | #include <lemon/lgf_reader.h> |
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[170] | 23 | #include <lemon/dijkstra.h> |
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| 24 | #include <lemon/path.h> |
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[286] | 25 | #include <lemon/bin_heap.h> |
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[170] | 26 | |
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[171] | 27 | #include "graph_test.h" |
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[170] | 28 | #include "test_tools.h" |
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| 29 | |
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| 30 | using namespace lemon; |
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| 31 | |
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[228] | 32 | char test_lgf[] = |
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| 33 | "@nodes\n" |
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| 34 | "label\n" |
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| 35 | "0\n" |
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| 36 | "1\n" |
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| 37 | "2\n" |
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| 38 | "3\n" |
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| 39 | "4\n" |
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| 40 | "@arcs\n" |
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| 41 | " label length\n" |
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| 42 | "0 1 0 1\n" |
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| 43 | "1 2 1 1\n" |
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| 44 | "2 3 2 1\n" |
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| 45 | "0 3 4 5\n" |
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| 46 | "0 3 5 10\n" |
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| 47 | "0 3 6 7\n" |
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| 48 | "4 2 7 1\n" |
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| 49 | "@attributes\n" |
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| 50 | "source 0\n" |
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| 51 | "target 3\n"; |
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| 52 | |
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[209] | 53 | void checkDijkstraCompile() |
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[170] | 54 | { |
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| 55 | typedef int VType; |
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| 56 | typedef concepts::Digraph Digraph; |
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| 57 | typedef concepts::ReadMap<Digraph::Arc,VType> LengthMap; |
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| 58 | typedef Dijkstra<Digraph, LengthMap> DType; |
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[286] | 59 | typedef Digraph::Node Node; |
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| 60 | typedef Digraph::Arc Arc; |
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[209] | 61 | |
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[170] | 62 | Digraph G; |
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[286] | 63 | Node s, t; |
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| 64 | Arc e; |
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[170] | 65 | VType l; |
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| 66 | bool b; |
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| 67 | DType::DistMap d(G); |
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| 68 | DType::PredMap p(G); |
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| 69 | LengthMap length; |
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[286] | 70 | Path<Digraph> pp; |
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[170] | 71 | |
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[286] | 72 | { |
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| 73 | DType dijkstra_test(G,length); |
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[170] | 74 | |
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[286] | 75 | dijkstra_test.run(s); |
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| 76 | dijkstra_test.run(s,t); |
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[170] | 77 | |
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[286] | 78 | l = dijkstra_test.dist(t); |
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| 79 | e = dijkstra_test.predArc(t); |
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| 80 | s = dijkstra_test.predNode(t); |
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| 81 | b = dijkstra_test.reached(t); |
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| 82 | d = dijkstra_test.distMap(); |
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| 83 | p = dijkstra_test.predMap(); |
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| 84 | pp = dijkstra_test.path(t); |
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| 85 | } |
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| 86 | { |
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| 87 | DType |
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| 88 | ::SetPredMap<concepts::ReadWriteMap<Node,Arc> > |
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| 89 | ::SetDistMap<concepts::ReadWriteMap<Node,VType> > |
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| 90 | ::SetProcessedMap<concepts::WriteMap<Node,bool> > |
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| 91 | ::SetStandardProcessedMap |
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| 92 | ::SetOperationTraits<DijkstraWidestPathOperationTraits<VType> > |
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| 93 | ::SetHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> > > |
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| 94 | ::SetStandardHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> > > |
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| 95 | ::Create dijkstra_test(G,length); |
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[170] | 96 | |
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[286] | 97 | dijkstra_test.run(s); |
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| 98 | dijkstra_test.run(s,t); |
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| 99 | |
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| 100 | l = dijkstra_test.dist(t); |
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| 101 | e = dijkstra_test.predArc(t); |
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| 102 | s = dijkstra_test.predNode(t); |
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| 103 | b = dijkstra_test.reached(t); |
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| 104 | pp = dijkstra_test.path(t); |
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| 105 | } |
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| 106 | |
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[170] | 107 | } |
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| 108 | |
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[209] | 109 | void checkDijkstraFunctionCompile() |
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[170] | 110 | { |
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| 111 | typedef int VType; |
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| 112 | typedef concepts::Digraph Digraph; |
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| 113 | typedef Digraph::Arc Arc; |
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| 114 | typedef Digraph::Node Node; |
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| 115 | typedef concepts::ReadMap<Digraph::Arc,VType> LengthMap; |
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[209] | 116 | |
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[170] | 117 | Digraph g; |
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[278] | 118 | bool b; |
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| 119 | dijkstra(g,LengthMap()).run(Node()); |
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| 120 | b=dijkstra(g,LengthMap()).run(Node(),Node()); |
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[170] | 121 | dijkstra(g,LengthMap()) |
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[278] | 122 | .predMap(concepts::ReadWriteMap<Node,Arc>()) |
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| 123 | .distMap(concepts::ReadWriteMap<Node,VType>()) |
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| 124 | .processedMap(concepts::WriteMap<Node,bool>()) |
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[170] | 125 | .run(Node()); |
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[278] | 126 | b=dijkstra(g,LengthMap()) |
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| 127 | .predMap(concepts::ReadWriteMap<Node,Arc>()) |
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| 128 | .distMap(concepts::ReadWriteMap<Node,VType>()) |
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| 129 | .processedMap(concepts::WriteMap<Node,bool>()) |
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| 130 | .path(concepts::Path<Digraph>()) |
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| 131 | .dist(VType()) |
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| 132 | .run(Node(),Node()); |
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[170] | 133 | } |
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| 134 | |
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| 135 | template <class Digraph> |
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[209] | 136 | void checkDijkstra() { |
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[170] | 137 | TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
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| 138 | typedef typename Digraph::template ArcMap<int> LengthMap; |
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| 139 | |
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| 140 | Digraph G; |
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| 141 | Node s, t; |
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| 142 | LengthMap length(G); |
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[209] | 143 | |
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[228] | 144 | std::istringstream input(test_lgf); |
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[293] | 145 | digraphReader(G, input). |
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[228] | 146 | arcMap("length", length). |
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| 147 | node("source", s). |
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| 148 | node("target", t). |
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| 149 | run(); |
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[209] | 150 | |
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| 151 | Dijkstra<Digraph, LengthMap> |
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| 152 | dijkstra_test(G, length); |
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[170] | 153 | dijkstra_test.run(s); |
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[209] | 154 | |
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[228] | 155 | check(dijkstra_test.dist(t)==3,"Dijkstra found a wrong path."); |
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[170] | 156 | |
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| 157 | Path<Digraph> p = dijkstra_test.path(t); |
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[278] | 158 | check(p.length()==3,"path() found a wrong path."); |
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[170] | 159 | check(checkPath(G, p),"path() found a wrong path."); |
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| 160 | check(pathSource(G, p) == s,"path() found a wrong path."); |
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| 161 | check(pathTarget(G, p) == t,"path() found a wrong path."); |
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[209] | 162 | |
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[170] | 163 | for(ArcIt e(G); e!=INVALID; ++e) { |
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| 164 | Node u=G.source(e); |
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| 165 | Node v=G.target(e); |
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[210] | 166 | check( !dijkstra_test.reached(u) || |
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| 167 | (dijkstra_test.dist(v) - dijkstra_test.dist(u) <= length[e]), |
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[278] | 168 | "Wrong output. dist(target)-dist(source)-arc_length=" << |
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[210] | 169 | dijkstra_test.dist(v) - dijkstra_test.dist(u) - length[e]); |
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[170] | 170 | } |
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| 171 | |
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[228] | 172 | for(NodeIt v(G); v!=INVALID; ++v) { |
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| 173 | if (dijkstra_test.reached(v)) { |
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| 174 | check(v==s || dijkstra_test.predArc(v)!=INVALID, "Wrong tree."); |
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| 175 | if (dijkstra_test.predArc(v)!=INVALID ) { |
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| 176 | Arc e=dijkstra_test.predArc(v); |
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| 177 | Node u=G.source(e); |
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| 178 | check(u==dijkstra_test.predNode(v),"Wrong tree."); |
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| 179 | check(dijkstra_test.dist(v) - dijkstra_test.dist(u) == length[e], |
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| 180 | "Wrong distance! Difference: " << |
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| 181 | std::abs(dijkstra_test.dist(v)-dijkstra_test.dist(u)-length[e])); |
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| 182 | } |
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[170] | 183 | } |
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| 184 | } |
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[209] | 185 | |
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[170] | 186 | { |
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| 187 | NullMap<Node,Arc> myPredMap; |
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| 188 | dijkstra(G,length).predMap(myPredMap).run(s); |
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| 189 | } |
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| 190 | } |
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| 191 | |
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| 192 | int main() { |
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| 193 | checkDijkstra<ListDigraph>(); |
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| 194 | checkDijkstra<SmartDigraph>(); |
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| 195 | return 0; |
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| 196 | } |
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