// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
// 
// 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 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.Collections;
using System.Collections.Generic;

public class Loops
{
	public void ForEach(IEnumerable<string> enumerable)
	{
		foreach (string current in enumerable)
		{
			current.ToLower();
		}
	}
	
	public void ForEachOverList(List<string> list)
	{
		// List has a struct as enumerator, so produces quite different IL than foreach over the IEnumerable interface
		foreach (string current in list)
		{
			current.ToLower();
		}
	}
	
	public void ForEachOverNonGenericEnumerable(IEnumerable enumerable)
	{
		foreach (object current in enumerable)
		{
			current.ToString();
		}
	}
	
	public void ForEachOverNonGenericEnumerableWithAutomaticCast(IEnumerable enumerable)
	{
		foreach (int num in enumerable)
		{
			num.ToString();
		}
	}
	
//	public void ForEachOverArray(string[] array)
//	{
//		foreach (string text in array)
//		{
//			text.ToLower();
//		}
//	}
	
	public void ForOverArray(string[] array)
	{
		for (int i = 0; i < array.Length; i++)
		{
			array[i].ToLower();
		}
	}
	
	public void NestedLoops()
	{
		for (int i = 0; i < 10; i++) {
			if (i % 2 == 0) {
				for (int j = 0; j < 5; j++) {
					Console.WriteLine("Y");
				}
			} else {
				Console.WriteLine("X");
			}
		}
	}
	
	public int MultipleExits()
	{
		int i = 0;
		while (true) {
			if (i % 4 == 0) { return 4; }
			if (i % 7 == 0) { break; }
			if (i % 9 == 0) { return 5; }
			if (i % 11 == 0) { break; }
			i++;
		}
		i = int.MinValue;
		return i;
	}
	
	public int InterestingLoop()
	{
		int i = 0;
		if (i % 11 == 0) {
			while (true) {
				if (i % 4 == 0) {
					if (i % 7 == 0) {
						if (i % 11 == 0) {
							continue; // use a continue here to prevent moving the if (i%7) outside the loop
						}
						Console.WriteLine("7");
					} else {
						// this block is not part of the natural loop
						Console.WriteLine("!7");
					}
					break;
				}
				i++;
			}
			// This instruction is still dominated by the loop header
			i = int.MinValue;
		}
		return i;
	}
	
	bool Condition(string arg)
	{
		Console.WriteLine("Condition: " + arg);
		return false;
	}
	
	public void WhileLoop()
	{
		Console.WriteLine("Initial");
		if (Condition("if")) {
			while (Condition("while")) {
				Console.WriteLine("Loop Body");
				if (Condition("test")) {
					if (Condition("continue"))
						continue;
					if (!Condition("break"))
						break;
				}
				Console.WriteLine("End of loop body");
			}
			Console.WriteLine("After loop");
		}
		Console.WriteLine("End of method");
	}
	
	public void DoWhileLoop()
	{
		Console.WriteLine("Initial");
		if (Condition("if")) {
			do {
				Console.WriteLine("Loop Body");
				if (Condition("test")) {
					if (Condition("continue"))
						continue;
					if (!Condition("break"))
						break;
				}
				Console.WriteLine("End of loop body");
			} while (Condition("while"));
			Console.WriteLine("After loop");
		}
		Console.WriteLine("End of method");
	}
	
	public void ForLoop()
	{
		Console.WriteLine("Initial");
		if (Condition("if")) {
			for (int i = 0; Condition("for"); i++) {
				Console.WriteLine("Loop Body");
				if (Condition("test")) {
					if (Condition("continue"))
						continue;
					if (!Condition("break"))
						break;
				}
				Console.WriteLine("End of loop body");
			}
			Console.WriteLine("After loop");
		}
		Console.WriteLine("End of method");
	}
}