ILSpy/ICSharpCode.Decompiler.Tests/TestCases/Correctness/ControlFlow.cs

// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
// 
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// 
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// 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
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using System;
using System.Collections.Generic;

namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
{
	class ControlFlow
	{
		public static int Main()
		{
			int result = 0;
			EmptyIf("Empty", ref result);
			EmptyIf("test", ref result);
			NormalIf("none", ref result);
			NormalIf("test", ref result);
			NormalIf2("none", ref result);
			NormalIf2("test", ref result);
			NormalIf3("none", ref result);
			NormalIf3("test", ref result);
			Test("none", ref result);
			Test("test", ref result);
			Console.WriteLine(result);
			ForeachWithAssignment(new int[] { 1, 5, 25 });
			BreakUnlessContinue(true);
			BreakUnlessContinue(false);
			TestConditionals();
			Console.WriteLine("Issue1946:\n" + Issue1946());
			return 0;
		}

		static void EmptyIf(string input, ref int result)
		{
			if (input.Contains("test"))
			{
			}
			result = result + 1;
			Console.WriteLine("EmptyIf");
		}

		static void NormalIf(string input, ref int result)
		{
			if (input.Contains("test"))
			{
				Console.WriteLine("result");
			}
			else
			{
				Console.WriteLine("else");
			}
			result = result + 1;
			Console.WriteLine("end");
		}

		static void NormalIf2(string input, ref int result)
		{
			if (input.Contains("test"))
			{
				Console.WriteLine("result");
			}
			result = result + 1;
			Console.WriteLine("end");
		}

		static void NormalIf3(string input, ref int result)
		{
			if (input.Contains("test"))
			{
				Console.WriteLine("result");
			}
			else
			{
				Console.WriteLine("else");
			}
			result = result + 1;
		}

		static void Test(string input, ref int result)
		{
			foreach (char c in input)
			{
				Console.Write(c);
				result = result + 1;
			}
			if (input.Contains("test"))
			{
				Console.WriteLine("result");
			}
			else
			{
				Console.WriteLine("else");
			}
		}

		int Dim2Search(int arg)
		{
			var tens = new[] { 10, 20, 30 };
			var ones = new[] { 1, 2, 3 };

			for (int i = 0; i < tens.Length; i++)
			{
				for (int j = 0; j < ones.Length; j++)
				{
					if (tens[i] + ones[j] == arg)
						return i;
				}
			}

			return -1;
		}

		static void ForeachWithAssignment(IEnumerable<int> inputs)
		{
			Console.WriteLine("ForeachWithAssignment");
			foreach (int input in inputs)
			{
				int i = input;
				if (i < 10)
					i *= 2;
				Console.WriteLine(i);
			}
		}

		static void BreakUnlessContinue(bool b)
		{
			Console.WriteLine("BreakUnlessContinue({0})", b);
			for (int i = 0; i < 5; i++)
			{
				if ((i % 3) == 0)
					continue;
				Console.WriteLine(i);
				if (b)
				{
					Console.WriteLine("continuing");
					continue;
				}
				Console.WriteLine("breaking out of loop");
				break;
			}
			Console.WriteLine("BreakUnlessContinue (end)");
		}

		static void TestConditionals()
		{
			Console.WriteLine(CastAfterConditional(0));
			Console.WriteLine(CastAfterConditional(128));
		}

		static byte CastAfterConditional(int value)
		{
			byte answer = (byte)(value == 128 ? 255 : 0);
			return answer;
		}

		static string Issue1946()
		{
			string obj = "1";
			try
			{
				obj = "2";
			}
			catch
			{
				obj = "3";
			}
			finally
			{
				obj = "4";
			}
			return obj;
		}
	}
}