add null range + static function base class

src/include/arith.h

@@ -2,9 +2,63 @@
 #ifndef __arith_h__
 #define __arith_h__
 
-namespace MultiArrayHelper
+namespace MultiArrayTools
 {
+
+    template <size_t N>
+    struct ArgPack
+    {
+	template <class F, class Tuple, typename... As>
+	static inline auto mk(const Tuple& tp, As... as)
+	    -> decltype(ArgPack<N-1>::mk(tp, std::get<N>(tp), as...))
+	{
+	    return ArgPack<N-1>::mk(tp, std::get<N>(tp), as...);
+	}
+    };
+
+    template <>
+    struct ArgPack<0>
+    {
+	template <class F, class Tuple, typename... As>
+	static inline auto mk(const Tuple& tp, As... as)
+	    -> decltype(F::apply(std::get<0>(tp), as...))
+	{
+	    return F::apply(std::get<0>(tp), as...);
+	}
+    };
+
+    template <typename T, class F, typename... As>
+    struct StaticFunctionBase
+    {
+	static constexpr bool FISSTATIC = true;
+	typedef T value_type;
+	
+	template <class... Ops>
+	static auto mk(const Ops&... ops)
+	    -> Operation<T,F,Ops...>
+	{
+	    return Operation<T,F,Ops...>(ops...);
+	}
+
+	static inline T apply(const std::tuple<As...>& arg)
+	{
+	    return ArgPack<sizeof...(As)-1>::template mk<F,std::tuple<As...> >(arg);
+	}
+    };
+    
     // OPERATIONS (STATIC)
+    template <typename T>
+    struct identity : public StaticFunctionBase<T, identity<T>, T>
+    {
+	//static constexpr bool FISSTATIC = true;
+	using StaticFunctionBase<T, identity<T>, T>::apply;
+	
+	static inline T apply(T a)
+	{
+	    return a;
+	}
+    };
+    
     template <typename T>
     struct plus
     {

src/include/mbase_def.h

@@ -40,6 +40,10 @@ namespace MultiArrayTools
     template <typename T, class... Ranges>
     class OperationRoot;
 
+    // multi_array_operation.h
+    template <typename T>
+    class OperationValue;
+
     // multi_array_operation.h
     template <typename T, class... Ranges>
     class ConstOperationRoot;

src/include/multi_array.h

@@ -39,6 +39,7 @@ namespace MultiArrayTools
 	MultiArray(const std::shared_ptr<SRanges>&... ranges, std::vector<T>&& vec);
 	MultiArray(const typename CRange::SpaceType& space);
 	MultiArray(const typename CRange::SpaceType& space, std::vector<T>&& vec);
+	MultiArray(MultiArray<T,AnonymousRange>& ama, SIZET<SRanges>... sizes);
 	
 	// Only if ALL ranges have default extensions:
 	//MultiArray(const std::vector<T>& vec);
@@ -86,7 +87,10 @@ namespace MultiArrayTools
     };
 
     template <typename T>
-    using Scalar = MultiArray<T>;
+    using Scalar = MultiArray<T,NullRange>;
+
+    template <typename T>
+    Scalar<T> scalar(const T& in);
 
     template <typename T, class... ERanges>
     struct ArrayCatter<MultiArray<T,ERanges...> >
@@ -119,6 +123,12 @@ namespace MultiArrayTools
 
 namespace MultiArrayTools
 {
+    template <typename T>
+    Scalar<T> scalar(const T& in)
+    {
+	NullRF nrf;
+	return Scalar<T>( std::dynamic_pointer_cast<NullRange>( nrf.create() ), std::vector<T>( { in } ) );
+    }
     
     /*******************
      *  MultiArray     *	     
@@ -175,6 +185,14 @@ namespace MultiArrayTools
 	}
     }
 
+    template <typename T, class... SRanges>
+    MultiArray<T,SRanges...>::MultiArray(MultiArray<T,AnonymousRange>& ama, SIZET<SRanges>... sizes) :
+	MutableMultiArrayBase<T,SRanges...>( ama.range()->template scast<SRanges...>(sizes...)->space() ),
+	mCont( std::move( ama.mCont ) )
+    {
+	MAB::mInit = true;
+    }
+    
     /*
     template <typename T, class... SRanges>
     template <class Range2, class Range3>

src/include/multi_array_operation.h

@@ -33,6 +33,11 @@ namespace MultiArrayTools
 	OperationClass& THIS() { return static_cast<OperationClass&>(*this); }
 	const OperationClass& THIS() const { return static_cast<OperationClass const&>(*this); }
 
+	//inline auto operator+(const T& in) const
+	//    -> Operation<T,plus<T>,OperationClass,OperationValue<T> >;
+
+	// !!!
+	
 	template <class Second>
 	auto operator+(const Second& in) const
 	    -> Operation<T,plus<T>,OperationClass,Second>;
@@ -196,6 +201,30 @@ namespace MultiArrayTools
 	IndexType mIndex;
     };
 
+    template <typename T>
+    class OperationValue : public OperationTemplate<T,OperationValue<T> >
+    {
+	typedef T value_type;
+	typedef OperationBase<T,OperationValue<T> > OT;
+	typedef ContainerRange<T,NullRange> CRange;
+	typedef ContainerIndex<T,NullIndex> IndexType;
+
+	static constexpr size_t SIZE = 1;
+
+	OperationValue(const T& val);
+
+	template <class ET>
+	inline T get(ET pos) const;
+
+	MExt<void> rootSteps(std::intptr_t iPtrNum = 0) const; // nullptr for simple usage with decltype
+
+	template <class Expr>
+	Expr loop(Expr exp) const;
+	
+    private:
+	T mVal;
+    };
+    
     template <class Op>
     size_t sumRootNum()
     {
@@ -324,6 +353,15 @@ namespace MultiArrayTools
      *   OperationTemplate     *
      ***************************/
 
+    /*
+    template <typename T, class OperationClass>
+    auto OperationBase<T,OperationClass>::operator+(const T& in) const
+	-> Operation<T,plus<T>,OperationClass,OperationValue<T> >
+    {
+	return Operation<T,plus<T>,OperationClass,OperationValue<T> >(THIS(), in);
+    }
+    */
+    
     template <typename T, class OperationClass>
     template <class Second>
     auto OperationBase<T,OperationClass>::operator+(const Second& in) const
@@ -525,6 +563,31 @@ namespace MultiArrayTools
 	return mDataPtr + mIndex.pos();
     }
 
+
+    template <typename T>
+    OperationValue<T>::OperationValue(const T& val) : mVal(val) {}
+
+    template <typename T>
+    template <class ET>
+    inline T OperationValue<T>::get(ET pos) const
+    {
+	return mVal;
+    }
+
+    template <typename T>
+    MExt<void> OperationValue<T>::rootSteps(std::intptr_t iPtrNum) const
+    {
+	return MExt<void>(0);
+    }
+
+    template <typename T>
+    template <class Expr>
+    Expr OperationValue<T>::loop(Expr exp) const
+    {
+	return exp;
+    }
+
+    
     /*******************
      *   Operation     *
      *******************/

src/include/ranges/range_types/header.h

@@ -14,6 +14,7 @@
 //#ifndef __ranges_header__
 //#define __ranges_header__
 
+#include "null_range.h"
 #include "spin_range.h"
 #include "space_range.h"
 #include "classic_range.h"

src/include/ranges/range_types/null_range.h

@@ -0,0 +1,76 @@
+
+
+#ifdef include_range_type
+include_range_type(NUL,-2)
+#else
+
+#ifdef __ranges_header__
+// assert, that this is only used within range_types/header.h
+
+//#ifndef __spin_range_h__
+//#define __spin_range_h__
+
+namespace MultiArrayTools
+{   
+    typedef SingleIndex<size_t,SpaceType::NUL> NullIndex;
+
+    template <>
+    class SingleRangeFactory<size_t,SpaceType::NUL> : public RangeFactoryBase
+    {
+    public:
+	
+	typedef SingleRange<size_t,SpaceType::NUL> oType;
+
+	SingleRangeFactory();
+	std::shared_ptr<RangeBase> create();
+	
+    };
+
+    template <>
+    class SingleRange<size_t,SpaceType::NUL> : public RangeInterface<NullIndex>
+    {
+    public:
+	typedef RangeBase RB;
+	typedef typename RangeInterface<SingleIndex<size_t,SpaceType::NUL> >::IndexType IndexType;
+	typedef SingleRange<size_t,SpaceType::NUL> RangeType;
+	typedef size_t MetaType;
+	
+	virtual size_t size() const override;
+	virtual size_t dim() const override;
+	
+	size_t get(size_t pos) const;
+	size_t getMeta(size_t metapos) const;
+	
+	virtual IndexType begin() const override;
+	virtual IndexType end() const override;
+	//virtual std::shared_ptr<VIWB> index() const override;
+	
+	friend SingleRangeFactory<size_t,SpaceType::NUL>;
+
+	static constexpr bool defaultable = true;
+
+	static constexpr size_t ISSTATIC = 1;
+	static constexpr size_t SIZE = 1;
+	static constexpr bool HASMETACONT = false;
+	
+	static SingleRangeFactory<size_t,SpaceType::NUL> factory()
+	{ return SingleRangeFactory<size_t,SpaceType::NUL>(); }
+	
+    protected:
+
+	SingleRange() = default;
+	SingleRange(const SingleRange& in) = delete;
+
+	//SingleRange(size_t spinNum);
+    };
+
+    typedef SingleRange<size_t,SpaceType::NUL> NullRange;
+    typedef SingleRangeFactory<size_t,SpaceType::NUL> NullRF;
+}
+
+
+//#endif // #ifndef __spin_range_h__
+
+#endif // #ifdef __ranges_header__
+
+#endif // #ifdef include_range_type

src/lib/ranges/range_types/null_range.cc

@@ -0,0 +1,76 @@
+
+#include "ranges/rheader.h"
+
+namespace MultiArrayTools
+{
+    /********************
+     *   SingleRange    *
+     ********************/
+    
+    SingleRangeFactory<size_t,SpaceType::NUL>::SingleRangeFactory()
+    {
+	// Quasi Singleton
+	if(not mProd){
+	    mProd = std::shared_ptr<oType>( new SingleRange<size_t,SpaceType::NUL>() );
+	    setSelf();
+	}
+    }
+
+    std::shared_ptr<RangeBase> SingleRangeFactory<size_t,SpaceType::NUL>::create()
+    {
+	return mProd;
+    }
+    
+    /********************
+     *   SingleRange    *
+     ********************/
+    
+    size_t SingleRange<size_t,SpaceType::NUL>::get(size_t pos) const
+    {
+	return 0;
+    }
+    
+    size_t SingleRange<size_t,SpaceType::NUL>::getMeta(size_t metapos) const
+    {
+	return 0;
+    }
+    
+    size_t SingleRange<size_t,SpaceType::NUL>::size() const
+    {
+	return 1;
+    }
+    
+    size_t SingleRange<size_t,SpaceType::NUL>::dim() const
+    {
+	return 1;
+    }
+    
+    typename SingleRange<size_t,SpaceType::NUL>::IndexType SingleRange<size_t,SpaceType::NUL>::begin() const
+    {
+	SingleIndex<size_t,SpaceType::NUL> i( std::dynamic_pointer_cast<SingleRange<size_t,SpaceType::NUL> >
+			       ( std::shared_ptr<RangeBase>( RB::mThis ) ) );
+	i = 0;
+	return i;
+    }
+    
+    typename SingleRange<size_t,SpaceType::NUL>::IndexType SingleRange<size_t,SpaceType::NUL>::end() const
+    {
+	SingleIndex<size_t,SpaceType::NUL> i( std::dynamic_pointer_cast<SingleRange<size_t,SpaceType::NUL> >
+			       ( std::shared_ptr<RangeBase>( RB::mThis ) ) );
+	i = size();
+	return i;
+    }
+
+    // put this in the interface class !!!
+    /*
+    std::shared_ptr<VIWB> SingleRange<size_t,SpaceType::NUL>::index() const
+    {
+	typedef IndexWrapper<IndexType> IW;
+	return std::make_shared<IW>
+            ( std::make_shared<IndexType>
+	      ( std::dynamic_pointer_cast<SingleRange<size_t,SpaceType::NUL> >
+		( std::shared_ptr<RangeBase>( RB::mThis ) ) ) );
+    }
+    */
+}
+