implement buildElementTree

    elements/context.cc

    elements/element_factory.cc

    elements/element_spec_parser.cc

    elements/element_tree.cc

    elements/plot/gridlines.cc

    elements/plot/axes.cc

    elements/plot/plot_domain.cc

/**

 * This file is part of the "FnordMetric" project

 *   Copyright (c) 2018 Paul Asmuth

 *

 * FnordMetric is free software: you can redistribute it and/or modify it under

 * the terms of the GNU General Public License v3.0. You should have received a

 * copy of the GNU General Public License along with this program. If not, see

 * <http://www.gnu.org/licenses/>.

 */

#include "element_factory.h"

#include "element_tree.h"

#include "element_spec_parser.h"

#include "graphics/layer.h"

namespace signaltk {

ReturnCode buildElementTree(

    const PropertyList& plist,

    ElementTree* tree) {

  for (size_t i = 0; i < plist.children.size(); ++i) {

    const auto& elem_name = plist.children[i].first;

    const auto& elem_config = plist.children[i].second;

    std::unique_ptr<Element> elem;

    if (auto rc = buildElement(elem_name, *elem_config, &elem); !rc.isSuccess()) {

      return rc;

    }

    tree->roots.emplace_back(std::move(elem));

  }

  return ReturnCode::success();

}

ReturnCode buildElementTree(

    const std::string& spec,

    ElementTree* tree) {

  PropertyList plist;

  SpecParser parser(spec.data(), spec.size());

  if (auto rc = parser.parse(&plist); !rc.isSuccess()) {

    return rc;

  }

  return buildElementTree(plist, tree);

}

} // namespace signaltk