yaml.h

/*
 * 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.
 */
 
#pragma once
 
#include <iosfwd>
#include <memory>
#include <string>
 
#include "graphar/result.h"
 
// forward declaration
namespace Yaml {
class Node;
}
 
namespace graphar {
 
class Yaml {
 public:
  explicit Yaml(std::shared_ptr<::Yaml::Node> root_node)
      : root_node_(root_node) {}
 
  ~Yaml() = default;
 
  const ::Yaml::Node operator[](const std::string& key) const;
 
  static Result<std::shared_ptr<Yaml>> Load(const std::string& input);
 
  static Result<std::shared_ptr<Yaml>> Load(std::iostream& input);
 
  static Result<std::shared_ptr<Yaml>> LoadFile(const std::string& file_name);
 
 private:
  std::shared_ptr<::Yaml::Node> root_node_;
};
 
}  // namespace graphar