JSONPropertyReader.h

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2022 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
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/* JSONPropertyReader.h                                        (C) 2000-2020 */
/*                                                                           */
/* Lecture de propriétés au format JSON.                                     */
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#ifndef ARCANE_UTILS_JSONPROPERTYREADER_H
#define ARCANE_UTILS_JSONPROPERTYREADER_H
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/*
 * NOTE: Les classes de ce fichier sont en cours de mise au point.
 * NOTE: L'API peut changer à tout moment. Ne pas utiliser en dehors de Arcane.
 */
 
#include "arcane/utils/JSONReader.h"
#include "arcane/utils/Property.h"
 
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namespace Arcane::properties
{
 
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template<typename T>
class JSONPropertyReader
: public PropertyVisitor<T>
{
 public:
  JSONPropertyReader(JSONValue jv,T& instance)
  : m_jv(jv), m_instance(instance){}
 private:
  JSONValue m_jv;
  T& m_instance;
 public:
  void visit(const PropertySettingBase<T>& s) override
  {
    JSONValue child_value = m_jv.child(s.setting()->name());
    if (child_value.null())
      return;
    s.setFromJSON(child_value,m_instance);
    s.print(std::cout,m_instance);
  }
};
 
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template<typename T> inline void
readFromJSON(JSONValue jv,T& instance)
{
  const char* instance_property_name = T :: propertyClassName();
  JSONValue child_value = jv.child(instance_property_name);
  if (child_value.null())
    return;
  JSONPropertyReader reader(child_value,instance);
  T :: applyPropertyVisitor(reader);
}
 
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} // End namespace Arcane::properties
 
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#endif