﻿// The MIT License (MIT)
// 
// Copyright (c) 2014-2017, Institute for Software & Systems Engineering
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

namespace Tests.Formulas.ExecutableStateFormulas
{
	using ISSE.SafetyChecking.Formula;
	using SafetySharp.Analysis;

	internal class Arrays : FormulaTestObject
	{
		private static int x;
		private readonly Formula[] _f = new Formula[2];
		private readonly Formula[] _i = new Formula[2];
		private Formula[] F { get; } = new Formula[2];

		private Formula this[int index]
		{
			set { _i[index] = value; }
		}

		protected override void Check()
		{
			var g = new Formula[2];

			g[0] = x == 2;
			g[1] = x == 3;
			_f[0] = x == 3;
			F[0] = x == 4;
			this[0] = x == 5;

			Check(2, g);
			CheckParams(2, x == 2, x == 3);
		}

		private void Check(int value, Formula[] g)
		{
			x = value;
			
			Check(g[0], () => x == 2);
			Check(g[1], () => x == 3);
			Check(_f[0], () => x == 3);
			Check(F[0], () => x == 4);
			Check(_i[0], () => x == 5);
		}

		private void CheckParams(int value, params Formula[] g)
		{
			x = value;

			Check(g[0], () => x == 2);
			Check(g[1], () => x == 3);
			Check(_f[0], () => x == 3);
			Check(F[0], () => x == 4);
			Check(_i[0], () => x == 5);
		}
	}
}