[grid] add print.hh, collecting specializations of commons Printer

dune/xt/grid/intersection.hh

@@ -30,6 +30,7 @@
 #include <dune/xt/common/type_traits.hh>
 
 #include <dune/xt/grid/type_traits.hh>
+#include <python/dune/xt/grid/grids.bindings.hh>
 
 namespace Dune {
 namespace XT {
@@ -172,14 +173,10 @@ contains(const Dune::Intersection<G, I>& intersection,
 
 
 template <class G, class I>
-std::ostream& operator<<(std::ostream& out, const Dune::Intersection<G, I>& intersection)
+std::ostream& DUNE_DEPRECATED_MSG("Use out << print(intersection) from <dune/xt/grid/print.hh> instead (05.07.2020)!")
+operator<<(std::ostream& out, const Dune::Intersection<G, I>& intersection)
 {
-  const auto& geometry = intersection.geometry();
-  const auto num_corners = geometry.corners();
-  out << G::dimension - 1 << "d-intersection{[" << geometry.corner(0) << "]";
-  for (int ii = 1; ii < num_corners; ++ii)
-    out << ", [" << geometry.corner(ii) << "]";
-  out << "}";
+  XT::Common::print(intersection);
   return out;
 }
 

dune/xt/grid/print.hh

+// This file is part of the dune-xt project:
+//   https://github.com/dune-community/dune-xt
+// Copyright 2009-2020 dune-xt developers and contributors. All rights reserved.
+// License: Dual licensed as BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause)
+//      or  GPL-2.0+ (http://opensource.org/licenses/gpl-license)
+//          with "runtime exception" (http://www.dune-project.org/license.html)
+// Authors:
+//   Felix Schindler (2020)
+
+#ifndef DUNE_XT_GRID_PRINT_HH
+#define DUNE_XT_GRID_PRINT_HH
+
+#include <dune/grid/common/intersection.hh>
+
+#include <dune/xt/common/print.hh>
+
+namespace Dune {
+namespace XT {
+namespace Common {
+
+
+/// \sa Common::Printer
+template <class G, class I, bool use_repr, typename anything>
+class Printer<Dune::Intersection<G, I>, use_repr, anything>
+  : public internal::DefaultPrinter<Dune::Intersection<G, I>, use_repr>
+{
+public:
+  using T = Dune::Intersection<G, I>;
+
+  const std::string grid_name;
+
+  Printer(const T& val, const Configuration& cfg = {})
+    : internal::DefaultPrinter<T, use_repr>(val, cfg)
+  {}
+
+  void repr(std::ostream& out) const override final
+  {
+    const auto& geometry = this->value.geometry();
+    const auto num_corners = geometry.corners();
+    out << G::dimension - 1 << "d-intersection{corners=" << print(geometry.corner(0));
+    for (int ii = 1; ii < num_corners; ++ii)
+      out << ", " << print(geometry.corner(ii));
+    out << ", normal=" << this->value.centerUnitOuterNormal() << "}";
+  }
+
+  void str(std::ostream& out) const override final
+  {
+    const auto& geometry = this->value.geometry();
+    const auto num_corners = geometry.corners();
+    out << G::dimension - 1 << "d-intersection{" << print(geometry.corner(0));
+    for (int ii = 1; ii < num_corners; ++ii)
+      out << ", " << print(geometry.corner(ii));
+    out << "}";
+  } // ... str(...)
+}; // class Printer
+
+
+} // namespace Common
+} // namespace XT
+} // namespace Dune
+
+#endif // DUNE_XT_GRID_PRINT_HH