localfunctionhelper.hh

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//-*- tab-width: 4; c-basic-offset: 2; indent-tabs-mode: nil -*-
#ifndef DUNE_PDELAB_FUNCTION_LOCALFUNCTIONHELPER_HH
#define DUNE_PDELAB_FUNCTION_LOCALFUNCTIONHELPER_HH
 
#include <dune/pdelab/function/tags.hh>
#include <dune/typetree/visitor.hh>
 
namespace Dune {
namespace PDELab {
 
namespace Imp
{
 
  template<typename Entity>
  struct PowerCompositeBindVisitor
    : public TypeTree::TreeVisitor, public TypeTree::DynamicTraversal
  {
    PowerCompositeBindVisitor(const Entity & e) : e_(e) {}
    template<typename LeafNode, typename TreePath>
    void leaf(LeafNode& node, TreePath treePath) const
    {
      node.bind(e_);
    }
    const Entity & e_;
  };
 
  struct PowerCompositeUnbindVisitor
    : public TypeTree::TreeVisitor, public TypeTree::DynamicTraversal
  {
    template<typename LeafNode, typename TreePath>
    void leaf(LeafNode& node, TreePath treePath) const
    {
      node.unbind();
    }
  };
 
  template<typename F>
  class LocalFunctionLeafNodeWrapper
    : public TypeTree::LeafNode
    , public F
  {
  public:
    typedef DifferentiableFunctionLocalViewTag ImplementationTag;
    LocalFunctionLeafNodeWrapper(const F& f) :
      F(f)
    {}
  };
 
} // end namespace Imp
} // end namespace PDELab
} // end namespace Dune
 
#endif // DUNE_PDELAB_FUNCTION_LOCALFUNCTIONHELPER_HH