<?php
require_once 'pooQuery/Conditionals.php';

function whilst($what)
{
	if($what instanceof BaseIntermediateObject)
		$what = $what->getValue();

	$cc = new ChainCollectorStartNode('IntermediateObject');
	return $cc->while($what);
}

/**
 * Do a loop from...
 *
 * @param int $start Starting number
 * @return FromIntermediate
 */
function from($start)
{
	if($start instanceof BaseIntermediateObject)
		$start = $start->getValue();

	$cc = new ChainCollectorStartNode('IntermediateObject');
	return $cc->from($start);
}

class FromIntermediate extends BaseIntermediateObject 
{
	/**
	 * Set looping end number
	 *
	 * @param int $end Ending looping number
	 * @return FromToObject
	 */
	function to($end)
	{
		return new FromToObject($this->_value, $end);
	}
}

class FromToObject
{
	private $_start;
	private $_end;
	
	public function __construct($start,$end)
	{
		$this->_start = $start;
		$this->_end = $end;
	}
	
	public function __call($method,$args)
	{
		if($method == 'do')
		{
			for($i = $this->_start; $i <= $this->_end; $i++)
				ChainRunner::getInstance()->runChain($args[0]->getChain());
		
			return new IntermediateObject();
		}
	}
	
}

class WhileIntermediate extends IfIntermediate 
{
	protected function _createObject()
	{
		return new WhileIsObject($this->_value, $this->_conditionStack);
	}
}

class WhileIsObject extends IsObject 
{
	protected function _setType($type, $value)
	{
		$this->_comparisonValue = $value;
		$this->_conditionType = $type;
		return new WhileIfAndObject($this->_conditionStack);
	}
}

class WhileIfAndObject extends IfAndObject 
{
	public function do_($what)
	{
		$stackEvaluates = true;
		$loops = 0;
		while($stackEvaluates)
		{
			echo 'Looping: '.$loops.'...<br>';
			foreach($this->_stack as $c)
			{
				if($c->evaluate())
				{
					$stackEvaluates = false;
					break;
				}
			}
			
			if($stackEvaluates)
				ChainRunner::getInstance()->runChain($what->getChain());
			
			$loops++;
			if($loops > 20)
				break;
		}
		
		return new IntermediateObject();
	}
}