<?php

function guid()
{
	static $guid;
	
	if($guid === NULL)
		$guid = 0;
	
	return $guid++;
}

class ForNode extends ClosingNode
{
	private $var_name,
			$guid;
	
	public function parseOpen($args = array())
	{
		$this->var_name = $args['var'];
		$this->guid = guid();
				
		return '<?php for($i'.$this->guid.'='. (int)$args['start'] .'; $i'.$this->guid.'<='. (int)$args['end'] .';$i'.$this->guid.'+='. (int)$args['increment'] .'): $scope->pushVar("'. $args['var'] .'",$i'.$this->guid.'); ?>';
	}
	public function parseClose()
	{	
		return '<?php endfor; $scope->popVar("'. $this->var_name .'"); ?>';
	}
}

class ForeachNode extends ClosingNode
{
	private $key_name,
			$val_name,
			$guid;
	
	public function parseOpen($args = array())
	{
		$this->key_name = $args['key'];
		$this->val_name = $args['val'];
		$this->guid = guid();
		
		return '<?php foreach($scope->pullVar('. $args['var'] .') as $k'.$this->guid.' => $v'.$this->guid.'): $scope->pushVar("'. $args['val'] .'", $k'.$this->guid.');$scope->pushVar("",$v'.$this->guid.'); ?>';
	}
	public function parseClose()
	{	
		return '<?php endforeach; $scope->popVar("'. $this->key_name .'"); $scope->popVar("'. $this->val_name .'"); ?>';
	}
}

class PrintNode extends ClosingNode
{	
	public function parseOpen($args = array())
	{
		return '<?php echo ';
	}
	public function parseClose()
	{	
		return '; ?>';
	}
}

?>