1 | #include <iostream> |
---|
2 | #include <vector> |
---|
3 | #include <smart_graph.h> |
---|
4 | |
---|
5 | using namespace lemon; |
---|
6 | |
---|
7 | ///\todo This is only a static map! |
---|
8 | /// |
---|
9 | template<class GG> |
---|
10 | class BoolIterEdgeMap |
---|
11 | { |
---|
12 | public: |
---|
13 | typedef GG Graph; |
---|
14 | typedef typename GG::Edge Edge; |
---|
15 | |
---|
16 | typedef Edge KeyType; |
---|
17 | typedef bool ValueType; |
---|
18 | |
---|
19 | friend class RefType; |
---|
20 | friend class FalseIterator; |
---|
21 | friend class TrueIterator; |
---|
22 | |
---|
23 | private: |
---|
24 | Graph &G; |
---|
25 | typename Graph::EdgeMap<int> cref; |
---|
26 | std::vector<Edge> vals; |
---|
27 | int sep; //map[e] is true <=> cref[e]>=sep |
---|
28 | |
---|
29 | bool isTrue(Edge e) {return cref[e]>=sep;} |
---|
30 | void swap(Edge e, int s) |
---|
31 | { |
---|
32 | int ti=cref[e]; |
---|
33 | Edge te=vals[s]; |
---|
34 | cref[e]=s; vals[s]=e; |
---|
35 | cref[te]=ti; vals[ti]=te; |
---|
36 | } |
---|
37 | |
---|
38 | void setTrue(Edge e) { if(cref[e]<sep) { sep--; swap(e,sep); } } |
---|
39 | void setFalse(Edge e) { if(cref[e]>=sep) { swap(e,sep); sep++; } } |
---|
40 | |
---|
41 | public: |
---|
42 | class FalseIterator |
---|
43 | { |
---|
44 | BoolIterEdgeMap &M; |
---|
45 | int i; |
---|
46 | public: |
---|
47 | FalseIterator(BoolIterEdgeMap &_M) : M(_M), i(0) { } |
---|
48 | FalseIterator &operator++() { ++i; return *this;} |
---|
49 | operator Edge() { return i<M.sep ? M.vals[i] : INVALID; } |
---|
50 | operator bool() { return i<M.sep; } |
---|
51 | }; |
---|
52 | class TrueIterator |
---|
53 | { |
---|
54 | BoolIterEdgeMap &M; |
---|
55 | int i; |
---|
56 | public: |
---|
57 | TrueIterator(BoolIterEdgeMap &_M) : M(_M), i(M.vals.size()-1) { } |
---|
58 | TrueIterator &operator++() { --i; return *this;} |
---|
59 | operator Edge() { return i>=M.sep ? M.vals[i] : INVALID; } |
---|
60 | operator bool() { return i>=M.sep; } |
---|
61 | }; |
---|
62 | |
---|
63 | class RefType |
---|
64 | { |
---|
65 | BoolIterEdgeMap &M; |
---|
66 | Edge e; |
---|
67 | public: |
---|
68 | RefType(BoolIterEdgeMap &_M,Edge _e) : M(_M), e(_e) { } |
---|
69 | |
---|
70 | operator ValueType() const |
---|
71 | { |
---|
72 | return M.isTrue(e); |
---|
73 | |
---|
74 | } |
---|
75 | ValueType operator = (ValueType v) const |
---|
76 | { |
---|
77 | if(v) M.setTrue(e); |
---|
78 | else M.setFalse(e); |
---|
79 | return v; |
---|
80 | } |
---|
81 | }; |
---|
82 | |
---|
83 | public: |
---|
84 | BoolIterEdgeMap(Graph &_G) : G(_G), cref(G) |
---|
85 | { |
---|
86 | sep=0; |
---|
87 | for(typename Graph::EdgeIt e(G);G.valid(e);G.next(e)) { |
---|
88 | cref[e]=sep; |
---|
89 | vals.push_back(e); |
---|
90 | sep++; |
---|
91 | } |
---|
92 | } |
---|
93 | RefType operator[] (Edge e) { return RefType(*this,e);} |
---|
94 | }; |
---|
95 | |
---|
96 | int main() |
---|
97 | { |
---|
98 | typedef SmartGraph Graph; |
---|
99 | typedef Graph::NodeIt NodeIt; |
---|
100 | typedef Graph::OutEdgeIt OutEdgeIt; |
---|
101 | typedef Graph::EdgeIt EdgeIt; |
---|
102 | |
---|
103 | Graph G; |
---|
104 | |
---|
105 | for(int i=0;i<3;i++) G.addNode(); |
---|
106 | |
---|
107 | for(NodeIt n(G);G.valid(n);G.next(n)) |
---|
108 | for(NodeIt m(G);G.valid(m);G.next(m)) if(n!=m) |
---|
109 | G.addEdge(n,m); |
---|
110 | |
---|
111 | //for(OutEdgeIt e(G,NodeIt(G));G.valid(e);G.next(e)) |
---|
112 | |
---|
113 | BoolIterEdgeMap<Graph> map(G); |
---|
114 | |
---|
115 | bool b=true; |
---|
116 | |
---|
117 | for(EdgeIt e(G);G.valid(e);G.next(e)) {map[e]=b;b=!b;} |
---|
118 | |
---|
119 | std::cout << true << '\n'; |
---|
120 | |
---|
121 | for(EdgeIt e(G);G.valid(e);G.next(e)) |
---|
122 | std::cout << G.id(G.source(e)) << "->" << G.id(G.target(e)) |
---|
123 | << ": " << map[e] << '\n'; |
---|
124 | std::cout << "True Edges:\n"; |
---|
125 | for(BoolIterEdgeMap<Graph>::TrueIterator i(map);i;++i) |
---|
126 | std::cout << G.id(G.source(i)) << "->" << G.id(G.target(i)) << '\n'; |
---|
127 | std::cout << "False Edges:\n"; |
---|
128 | for(BoolIterEdgeMap<Graph>::FalseIterator i(map);i;++i) |
---|
129 | std::cout << G.id(G.source(i)) << "->" << G.id(G.target(i)) << '\n'; |
---|
130 | } |
---|
131 | |
---|