DimSupportXML.h

//  trax track library
//  AD 2019 
//
//  "the resolution of all the fruitless searches"
//
//                              Peter Gabriel
//
// 
// Copyright (c) 2025 Trend Redaktions- und Verlagsgesellschaft mbH
// Copyright (c) 2019 Marc-Michael Horstmann
//
// Permission is hereby granted to any person obtaining a copy of this software 
// and associated source code (the "Software"), to use, view, and study the 
// Software for personal or internal business purposes, subject to the following 
// conditions:
//
// 1. Redistribution, modification, sublicensing, or commercial use of the 
// Software is NOT permitted without prior written consent from the copyright 
// holder.
//
// 2. The Software is provided "AS IS", without warranty of any kind, express 
// or implied.
//
// 3. All copies of the Software must retain this license notice.
//
// For further information, please contact: horstmann.marc@trendverlag.de
 
#pragma once

 
#include <boost/property_tree/ptree.hpp>
 
#include "dim/support/DimSupportStream.h"
 
namespace dim{
namespace ptreesupport{

    template<int L,int M,int T>
    Value<Dimension<L,M,T>> get( 
        const boost::property_tree::ptree& pt, 
        boost::property_tree::ptree::path_type path, 
        Value<Dimension<L,M,T>> defaultValue = Value<Dimension<L,M,T>>{0}, 
        Value<Dimension<L,M,T>> (*defaultUnits)( Real ) = DefaultUnit<L,M,T>::GetDefaultStreamInDimension() )
    {
        common::Resetter<typename DefaultUnit<L,M,T>::StreamInDimension> resetter{ DefaultUnit<L,M,T>::GetDefaultStreamInDimension(), defaultUnits };
        if( auto result = pt.get_optional<Value<Dimension<L,M,T>>>( path ) )
            return *result;
        return defaultValue;
    }
 
    template<int L,int M,int T>
    boost::optional<Value<Dimension<L,M,T>>> get_optional( 
        const boost::property_tree::ptree& pt, 
        boost::property_tree::ptree::path_type path, 
        Value<Dimension<L,M,T>> (*defaultUnits)( Real ) )
    {
        common::Resetter<typename DefaultUnit<L,M,T>::StreamInDimension> resetter{ DefaultUnit<L,M,T>::GetDefaultStreamInDimension(), defaultUnits };
        return pt.get_optional<Value<Dimension<L,M,T>>>( path );
    }
 
} // namespace ptreesupport
} // namespace dim