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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file Param/Node/NodeUtil.h
//! @brief Defines collection of utility functions for INode.
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************************************
#ifdef SWIG
#error no need to expose this header to Swig
#endif // SWIG
#ifndef BORNAGAIN_PARAM_NODE_NODEUTIL_H
#define BORNAGAIN_PARAM_NODE_NODEUTIL_H
#include "Base/Util/Assert.h"
#include "Param/Node/INode.h"
#include <string>
#include <vector>
namespace NodeUtil {
template <typename T> std::vector<const T*> ChildNodesOfType(const INode& node)
{
std::vector<const T*> result;
for (const auto& p_child : node.nodeChildren()) {
if (const auto* t = dynamic_cast<const T*>(p_child))
result.push_back(t);
}
return result;
}
template <typename T> const T* OnlyChildOfType(const INode& node)
{
const auto list = ChildNodesOfType<T>(node);
if (list.size() != 1)
return nullptr;
return list.front();
}
template <typename T> std::vector<const T*> AllDescendantsOfType(const INode& node)
{
std::vector<const T*> result;
for (const auto* child : node.nodeChildren()) {
ASSERT(child);
// Since this function is used to define objects in the generated Python script, the order
// of the elements is important. The parent may call its children => the children must be
// defined before. So first add all children/descendants to the output vector.
for (const auto* t : AllDescendantsOfType<T>(*child))
result.push_back(t);
if (const auto* t = dynamic_cast<const T*>(child))
result.push_back(t);
}
return result;
}
} // namespace NodeUtil
#endif // BORNAGAIN_PARAM_NODE_NODEUTIL_H
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