COIN-OR::LEMON - Graph Library

source: lemon-0.x/src/work/alpar/mapskeleton.h @ 209:9a37b8d02d74

Last change on this file since 209:9a37b8d02d74 was 209:9a37b8d02d74, checked in by Alpar Juttner, 16 years ago

get() -> operator[]()

File size: 2.0 KB
Line 
1// -*- c++ -*-
2#ifndef HUGO_MAPSKELETON_H
3#define HUGO_MAPSKELETON_H
4
5namespace hugo {
6 
7  ///Readable map skeleton
8  template<typename K, typename T>
9  class ReadMapSkeleton
10  {
11  public:
12    /// Map value type.
13    typedef T ValueType;
14    /// Map key type.
15    typedef K KeyType;
16
17    ///Default constructor.
18    ReadMapSkeleton() {}
19   
20    ///Reads an element of the map.
21    ValueType operator[](const KeyType &i) const {return ValueType();}
22  };
23
24
25  ///Writeable map skeleton
26  template<typename K, typename T>
27  class WriteMapSkeleton
28  {
29  public:
30    /// Map value type.
31    typedef T ValueType;
32    /// Map key type.
33    typedef K KeyType;
34
35    ///Default constructor.
36    WriteMapSkeleton() {}
37    ///'Fill with' constructor.
38    WriteMapSkeleton(const ValueType &t) {}
39   
40    ///Write an element of a map.
41    void set(const KeyType &i,const ValueType &t) {}
42  };
43
44  ///Read/Write map skeleton.
45  template<typename K, typename T>
46  class ReadWriteMapSkeleton : public ReadMapSkeleton<K,T>,
47                               public WriteMapSkeleton<K,T>
48  {
49  public:
50    ///Default constructor.
51    ReadWriteMapSkeleton() : ReadMapSkeleton(), WriteMapSkeleton() {}
52    ///'Fill with' constructor.
53    ReadWriteMap(const ValueType &t) :ReadMapSkeleton(), WriteMapSkeleton(t) {}
54  };
55 
56 
57  ///Dereferable map skeleton
58  template<typename K, typename T>
59  class MemoryMapSkeleton : public ReadWriteMapSkeleton<K,T>
60  {
61  public:
62    /// Map value type.
63    typedef T ValueType;
64    /// Map key type.
65    typedef K KeyType;
66
67    ///Default constructor.
68    ReferenceMapSkeleton() : ReadWriteMapSkeleton() {}
69    ///'Fill with' constructor.
70    ReferenceMapSkeleton(const ValueType &t) : ReadWriteMapSkeleton(t) {}   
71
72    ///Give a reference to the value belonging to a key.
73    ValueType &operator[](const KeyType &i) {return *(ValueType*)0;}
74    ///Give a const reference to the value belonging to a key.
75    const ValueType &operator[](const KeyType &i) const {return *(T*)0;}
76  };
77
78
79
80}
81#endif // HUGO_MAPSKELETON_H
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