cpp/src/yaml.cc

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#include <memory>
#include <string>

#include "yaml/Yaml.hpp"

#include "gar/util/result.h"
#include "gar/util/yaml.h"

namespace graphar {

const ::Yaml::Node Yaml::operator[](const std::string& key) const {
  return root_node_->operator[](key);
}

Result<std::shared_ptr<Yaml>> Yaml::Load(const std::string& input) {
  std::shared_ptr<::Yaml::Node> root_node = std::make_shared<::Yaml::Node>();
  try {
    ::Yaml::Parse(*root_node, input);
  } catch (::Yaml::Exception& e) { return Status::YamlError(e.what()); }
  return std::make_shared<Yaml>(root_node);
}

Result<std::shared_ptr<Yaml>> Yaml::Load(std::iostream& input) {
  std::shared_ptr<::Yaml::Node> root_node = std::make_shared<::Yaml::Node>();
  try {
    ::Yaml::Parse(*root_node, input);
  } catch (::Yaml::Exception& e) { return Status::YamlError(e.what()); }
  return std::make_shared<Yaml>(root_node);
}

Result<std::shared_ptr<Yaml>> Yaml::LoadFile(const std::string& file_name) {
  std::shared_ptr<::Yaml::Node> root_node = std::make_shared<::Yaml::Node>();
  try {
    ::Yaml::Parse(*root_node, file_name.c_str());
  } catch (::Yaml::Exception& e) { return Status::YamlError(e.what()); }
  return std::make_shared<Yaml>(root_node);
}

}  // namespace graphar