kicad/include/settings/json_settings_internals.h

79 lines
2.5 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2021 Jon Evans <jon@craftyjon.com>
* Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KICAD_JSON_SETTINGS_INTERNALS_H
#define KICAD_JSON_SETTINGS_INTERNALS_H
// This is a pretty heavy file. Try to use json_fwd.hpp most places.
#include <nlohmann/json.hpp>
class JSON_SETTINGS_INTERNALS : public nlohmann::json
{
friend class JSON_SETTINGS;
public:
JSON_SETTINGS_INTERNALS() :
nlohmann::json()
{}
/**
* Builds a JSON pointer based on a given string
* @param aPath is the path in the form "key1.key2.key3"
* @return a JSON pointer that can be used to index into a JSON object
*/
static nlohmann::json::json_pointer PointerFromString( std::string aPath );
template<typename ValueType>
void SetFromString( const std::string& aPath, ValueType aVal )
{
// Calls the overload below, which will convert from dotted string to JSON pointer
( *this )[aPath] = aVal;
}
template<typename ValueType>
ValueType Get( const std::string& aPath ) const
{
return at( PointerFromString( aPath ) ).get<ValueType>();
}
nlohmann::json& At( const std::string& aPath )
{
return at( PointerFromString( aPath ) );
}
nlohmann::json& operator[]( const nlohmann::json::json_pointer& aPointer )
{
return nlohmann::json::operator[]( aPointer );
}
nlohmann::json& operator[]( const std::string& aPath )
{
return nlohmann::json::operator[]( PointerFromString( aPath ) );
}
void CloneFrom( const JSON_SETTINGS_INTERNALS& aOther )
{
nlohmann::json::json_pointer root( "" );
this->nlohmann::json::operator[]( root ) = aOther.nlohmann::json::operator[]( root );
}
};
#endif // KICAD_JSON_SETTINGS_INTERNALS_H