ILSpy/ICSharpCode.Decompiler.Tests/TestCases/Pretty/CheckedUnchecked.cs

// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
// 
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// to whom the Software is furnished to do so, subject to the following conditions:
// 
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// substantial portions of the Software.
// 
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// 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;

namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
{
	internal class Box<T>
	{
		public readonly T Value;
	}

	public class CheckedUnchecked
	{
		public int Operators(int a, int b)
		{
			int num = checked(a + b);
			int num2 = a + b;
			int num3 = checked(a - b);
			int num4 = a - b;
			int num5 = checked(a * b);
			int num6 = a * b;
			int num7 = a / b;
			int num8 = a % b;
			// The division operators / and % only exist in one form (checked vs. unchecked doesn't matter for them)
			return num * num2 * num3 * num4 * num5 * num6 * num7 * num8;
		}

		public int Cast(int a)
		{
			short num = checked((short)a);
			short num2 = (short)a;
			byte b = checked((byte)a);
			byte b2 = (byte)a;
			return num * num2 * b * b2;
		}

		public void ForWithCheckedIteratorAndUncheckedBody(int n)
		{
			checked
			{
				for (int i = n + 1; i < n + 1; i++)
				{
					n = unchecked(i * i);
				}
			}
		}

		public void ForWithCheckedInitializerAndUncheckedIterator(int n)
		{
			int num = n;
			for (num = checked(num - 10); num < n; num++)
			{
				n--;
			}
		}
		public void ObjectCreationInitializerChecked()
		{
			TestHelp(new {
				x = 0,
				l = 0
			}, n => checked(new {
				x = n.x + 1,
				l = n.l + 1
			}));
		}

		public void ObjectCreationWithOneFieldChecked()
		{
			TestHelp(new {
				x = 0,
				l = 0
			}, n => new {
				x = checked(n.x + 1),
				l = n.l + 1
			});
		}

		public void ArrayInitializerChecked()
		{
			TestHelp(new int[2] { 1, 2 }, (int[] n) => checked(new int[2] {
				n[0] + 1,
				n[1] + 1
			}));
		}

		public T TestHelp<T>(T t, Func<T, T> f)
		{
			return f(t);
		}

		public void CheckedInArrayCreationArgument(int a, int b)
		{
			Console.WriteLine(new int[checked(a + b)]);
		}

		public short Unbox(TypeCode c, object b)
		{
			checked
			{
				switch (c)
				{
					case TypeCode.Int32:
						return (short)((Box<int>)b).Value;
					case TypeCode.UInt32:
						return (short)((Box<uint>)b).Value;
					case TypeCode.Double:
					{
						float num = (float)((Box<double>)b).Value;
						Console.WriteLine(num);
						return (short)num;
					}
					default:
						throw new Exception();
				}
			}
		}
	}
}