/* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*
*  Licensed to Elasticsearch B.V. under one or more contributor
*  license agreements. See the NOTICE file distributed with
*  this work for additional information regarding copyright
*  ownership. Elasticsearch B.V. 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.
*/

using System.Collections.Generic;
using System.Linq.Expressions;
using System.Reflection;

namespace OpenSearch.Client
{
	/// <summary>
	/// Resolves member infos in an expression, instance may NOT be shared.
	/// </summary>
	public class MemberInfoResolver : ExpressionVisitor
	{
		// ReSharper disable once VirtualMemberCallInConstructor
		public MemberInfoResolver(Expression expression) => Visit(expression);

		public IList<MemberInfo> Members { get; } = new List<MemberInfo>();

		protected override Expression VisitMember(MemberExpression expression)
		{
			Members.Add(expression.Member);
			return base.VisitMember(expression);
		}
	}
}