<?php/* @description     Transformation Style Sheets - Revolutionising PHP templating    * * @author          Tom Butler tom@r.je                                             * * @copyright       2017 Tom Butler <tom@r.je> | https://r.je/                      * * @license         http://www.opensource.org/licenses/bsd-license.php  BSD License * * @version         1.2                                                             */namespace Transphporm\Parser;/** Parses "string" and function(args) e.g. data(foo) or iteration(bar) */class Last {	private $autoLookup;	/*		Stores the last value e.g.			"a" + "b"		Will store "a" before reading the token for the + and perfoming the concatenate operation	*/	private $last;	private $data;	private $result;	private $traversing = false;	public function __construct($data, $result, $autoLookup) {		$this->data = $data;		$this->result = $result;		$this->autoLookup = $autoLookup;	}	public function traverse() {		return $this->data->traverse($this->last, $this->result);	}	public function clear() {		$this->last = null;	}	public function isEmpty() {		return $this->last === null;	}	public function processNested($parser, $token) {		$funcResult = $this->data->parseNested($parser, $token, $this->last);		$this->result->processValue($funcResult);		$this->clear();	}	public function read() {		return $this->last;	}	public function set($value) {		$this->last = $value;	}    public function makeTraversing() {        $this->traversing = true;    }	//Applies the current operation to whatever is in $last based on $mode	public function process() {		if ($this->last !== null) {			try {				$value = $this->data->extract($this->last, $this->autoLookup, $this->traversing);				$this->result->processValue($value);			}			catch (\UnexpectedValueException $e) {				$this->processLastUnexpected();			}		}	}	private function processLastUnexpected() {		if (!($this->autoLookup || $this->traversing)) {			$this->result->processValue($this->last);		}		else {			$this->result->clear();			$this->result->processValue(false);		}	}}