Added MatrixInfo.

src/TNL/Matrices/MatrixInfo.h

+/***************************************************************************
+                          Matrix.h  -  description
+                             -------------------
+    begin                : Dec 18, 2013
+    copyright            : (C) 2013 by Tomas Oberhuber
+    email                : tomas.oberhuber@fjfi.cvut.cz
+ ***************************************************************************/
+
+/* See Copyright Notice in tnl/Copyright */
+
+#pragma once
+
+#include <TNL/String.h>
+#include <TNL/Matrices/Dense.h>
+#include <TNL/Matrices/DenseView.h>
+#include <TNL/Matrices/SparseMatrix.h>
+#include <TNL/Matrices/SparseMatrixView.h>
+
+namespace TNL {
+/**
+ * \brief Namespace for matrix formats.
+ */
+namespace Matrices {
+
+template< typename Matrix >
+struct MatrixInfo
+{};
+
+template< typename Real,
+          typename Device,
+          typename Index,
+          bool RowMajorOrder >
+struct MatrixInfo< DenseView< Real, Device, RowMajorOrder > >
+{
+   static String getDensity() { return String( "dense" ); };
+};
+
+template< typename Real,
+          typename Device,
+          typename Index,
+          bool RowMajorOrder,
+          typename RealAllocator >
+struct MatrixInfo< Dense< Real, Device, RowMajorOrder, RealAllocator > >
+: public MatrixInfo< typename Dense< Real, Device, RowMajorOrder, RealAllocator >::ViewType >
+{
+};
+
+
+template< typename Real,
+          typename Device,
+          typename Index,
+          typename MatrixType,
+          template< typename Device_, typename Index_ > class SegmentsView >
+struct MatrixInfo< SparseMatrixView< Real, Device, Index, MatrixType, SegmentsView > >
+{
+   static String getDensity() { return String( "sparse" ); };
+
+   static String getFormat() {
+      if( std::is_same< SegementsView ........ >)
+   };
+};
+
+template< typename Real,
+          typename Device,
+          typename Index,
+          typename MatrixType,
+          template< typename Device_, typename Index_, typename IndexAllocator_ > class Segments,
+          typename RealAllocator,
+          typename IndexAllocator >
+struct MatrixInfo< SparseMatrix< Real, Device, Index, MatrixType, Segments, RealAllocator, IndexAllocator > >
+:public MatrixInfo< typename SparseMatrix< Real, Device, Index, MatrixType, Segments, RealAllocator, IndexAllocator >::ViewType >
+{
+}
+
+} //namespace Matrices
+} //namespace TNL
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