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kpeter (Peter Kovacs)
kpeter@inf.elte.hu
Fixes in the map concepts - Now Value type needn't be default constructible. - Extend the test file to check this.
0 2 0
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2 files changed with 22 insertions and 9 deletions:
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Ignore white space 6 line context
... ...
@@ -38,28 +38,27 @@
38 38
    /// Readable map concept.
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    ///
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    template<typename K, typename T>
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    class ReadMap
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    {
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    public:
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      /// The key type of the map.
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      typedef K Key;
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      /// The value type of the map. (The type of objects associated with the keys).
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      typedef T Value;
48 48

	
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      /// Returns the value associated with the given key.
50

	
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      /// Returns the value associated with the given key.
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      /// \bug Value shouldn't need to be default constructible. 
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      Value operator[](const Key &) const { return Value(); }
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      Value operator[](const Key &) const { 
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        return *static_cast<Value *>(0);
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      }
54 53

	
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      template<typename _ReadMap>
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      struct Constraints {
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	void constraints() {
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	  Value val = m[key];
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	  val = m[key];
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	  typename _ReadMap::Value own_val = m[own_key];
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	  own_val = m[own_key];
62 61

	
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	  ignore_unused_variable_warning(key);
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	  ignore_unused_variable_warning(val);
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	  ignore_unused_variable_warning(own_key);
... ...
@@ -117,25 +116,27 @@
117 116
    ///
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    template<typename K, typename T>
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    class ReadWriteMap : public ReadMap<K,T>,
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			 public WriteMap<K,T>
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    {
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    public:
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      /// The key type of the map.
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      typedef K Key;
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      /// The value type of the map. (The type of objects associated with the keys).
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      typedef T Value;
127 126

	
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      /// Returns the value associated with the given key.
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      Value operator[](const Key &) const { return Value(); }
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      Value operator[](const Key &) const { 
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        return *static_cast<Value *>(0);
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      }
130 131

	
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      /// Sets the value associated with the given key.
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      void set(const Key &, const Value &) {}
133 134

	
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      template<typename _ReadWriteMap>
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      struct Constraints {
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	void constraints() {
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	  checkConcept<ReadMap<K, T>, _ReadWriteMap >();
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	  checkConcept<WriteMap<K, T>, _ReadWriteMap >();
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	}
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      };
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    };
... ...
@@ -151,33 +152,35 @@
151 152
    public:
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      /// Tag for reference maps.
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      typedef True ReferenceMapTag;
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      /// The key type of the map.
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      typedef K Key;
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      /// The value type of the map. (The type of objects associated with the keys).
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      typedef T Value;
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      /// The reference type of the map.
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      typedef R Reference;
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      /// The const reference type of the map.
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      typedef CR ConstReference;
162 163

	
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    protected:
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      Value tmp;
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    public:
166 165

	
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      /// Returns a reference to the value associated with the given key.
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      Reference operator[](const Key &) { return tmp; }
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      Reference operator[](const Key &) { 
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        return *static_cast<Value *>(0);
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      }
169 170

	
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      /// Returns a const reference to the value associated with the given key.
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      ConstReference operator[](const Key &) const { return tmp; }
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      ConstReference operator[](const Key &) const {
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        return *static_cast<Value *>(0);
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      }
172 175

	
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      /// Sets the value associated with the given key.
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      void set(const Key &k,const Value &t) { operator[](k)=t; }
175 178

	
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      template<typename _ReferenceMap>
177 180
      struct Constraints {
178 181
	void constraints() {
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	  checkConcept<ReadWriteMap<K, T>, _ReferenceMap >();
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	  ref = m[key];
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	  m[key] = val;
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	  m[key] = ref;
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	  m[key] = cref;
Ignore white space 24 line context
... ...
@@ -23,24 +23,30 @@
23 23
#include <lemon/concepts/maps.h>
24 24
#include <lemon/maps.h>
25 25

	
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#include "test_tools.h"
27 27

	
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using namespace lemon;
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using namespace lemon::concepts;
30 30

	
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struct A {};
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inline bool operator<(A, A) { return true; }
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struct B {};
34 34

	
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class C {
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  int x;
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public:
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  C(int _x) : x(_x) {}
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};
40

	
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class F {
36 42
public:
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  typedef A argument_type;
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  typedef B result_type;
39 45

	
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  B operator()(const A&) const { return B(); }
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private:
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  F& operator=(const F&);
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};
44 50

	
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int func(A) { return 3; }
46 52

	
... ...
@@ -49,27 +55,31 @@
49 55
typedef ReadMap<A, double> DoubleMap;
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typedef ReadWriteMap<A, double> DoubleWriteMap;
51 57
typedef ReferenceMap<A, double, double&, const double&> DoubleRefMap;
52 58

	
53 59
typedef ReadMap<A, bool> BoolMap;
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typedef ReadWriteMap<A, bool> BoolWriteMap;
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typedef ReferenceMap<A, bool, bool&, const bool&> BoolRefMap;
56 62

	
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int main()
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{
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  // Map concepts
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  checkConcept<ReadMap<A,B>, ReadMap<A,B> >();
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  checkConcept<ReadMap<A,C>, ReadMap<A,C> >();
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  checkConcept<WriteMap<A,B>, WriteMap<A,B> >();
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  checkConcept<WriteMap<A,C>, WriteMap<A,C> >();
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  checkConcept<ReadWriteMap<A,B>, ReadWriteMap<A,B> >();
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  checkConcept<ReadWriteMap<A,C>, ReadWriteMap<A,C> >();
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  checkConcept<ReferenceMap<A,B,B&,const B&>, ReferenceMap<A,B,B&,const B&> >();
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  checkConcept<ReferenceMap<A,C,C&,const C&>, ReferenceMap<A,C,C&,const C&> >();
64 74

	
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  // NullMap
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  {
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    checkConcept<ReadWriteMap<A,B>, NullMap<A,B> >();
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    NullMap<A,B> map1;
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    NullMap<A,B> map2 = map1;
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    map1 = nullMap<A,B>();
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  }
72 82

	
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  // ConstMap
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  {
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    checkConcept<ReadWriteMap<A,B>, ConstMap<A,B> >();
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