/*
    Copyright (C) 2014-2019 de4dot@gmail.com

    This file is part of dnSpy

    dnSpy is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    dnSpy is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with dnSpy.  If not, see <http://www.gnu.org/licenses/>.
*/

using System;
using dnSpy.Contracts.Debugger.Evaluation;

namespace dnSpy.Contracts.Debugger.Engine.Evaluation {
	/// <summary>
	/// Provides <see cref="DbgEngineValueNode"/>s for the variables windows
	/// </summary>
	public abstract class DbgEngineValueNodeProvider {
		/// <summary>
		/// Gets all values
		/// </summary>
		/// <param name="evalInfo">Evaluation info</param>
		/// <param name="options">Options</param>
		/// <returns></returns>
		public abstract DbgEngineValueNode[] GetNodes(DbgEvaluationInfo evalInfo, DbgValueNodeEvaluationOptions options);
	}

	/// <summary>
	/// Provides <see cref="DbgEngineValueNode"/>s for the locals windows
	/// </summary>
	public abstract class DbgEngineLocalsValueNodeProvider {
		/// <summary>
		/// Gets all values
		/// </summary>
		/// <param name="evalInfo">Evaluation info</param>
		/// <param name="options">Options</param>
		/// <param name="localsOptions">Locals value node provider options</param>
		/// <returns></returns>
		public abstract DbgEngineLocalsValueNodeInfo[] GetNodes(DbgEvaluationInfo evalInfo, DbgValueNodeEvaluationOptions options, DbgLocalsValueNodeEvaluationOptions localsOptions);
	}

	/// <summary>
	/// Contains a value node and its kind
	/// </summary>
	public readonly struct DbgEngineLocalsValueNodeInfo {
		/// <summary>
		/// What kind of value this is (local or parameter)
		/// </summary>
		public DbgLocalsValueNodeKind Kind { get; }

		/// <summary>
		/// Gets the node
		/// </summary>
		public DbgEngineValueNode ValueNode { get; }

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="kind">What kind of value this is (local or parameter)</param>
		/// <param name="valueNode">Value node</param>
		public DbgEngineLocalsValueNodeInfo(DbgLocalsValueNodeKind kind, DbgEngineValueNode valueNode) {
			Kind = kind;
			ValueNode = valueNode ?? throw new ArgumentNullException(nameof(valueNode));
		}
	}
}