/*
 * QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
 * Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
 * 
 * Licensed 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.
*/

using System;
using System.Linq;
using System.Xml.Linq;

namespace QuantConnect.Util
{
    /// <summary>
    /// Provides extension methods for the XML to LINQ types
    /// </summary>
    public static class XElementExtensions
    {
        /// <summary>
        /// Gets the value from the element and converts it to the specified type.
        /// </summary>
        /// <typeparam name="T">The output type</typeparam>
        /// <param name="element">The element to access</param>
        /// <param name="name">The attribute name to access on the element</param>
        /// <returns>The converted value</returns>
        public static T Get<T>(this XElement element, string name) 
            where T : IConvertible
        {
            var xAttribute = element.Descendants(name).Single();
            string value = xAttribute.Value;
            return value.ConvertTo<T>();
        }
    }
}