--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Twig-1.3.0/lib/Twig/TokenParserBroker.php Tue Oct 25 23:56:28 2011 +0200
@@ -0,0 +1,107 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ * (c) 2010 Arnaud Le Blanc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Default implementation of a token parser broker.
+ *
+ * @package twig
+ * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
+ */
+class Twig_TokenParserBroker implements Twig_TokenParserBrokerInterface
+{
+ protected $parser;
+ protected $parsers = array();
+ protected $brokers = array();
+
+ /**
+ * Constructor.
+ *
+ * @param array|Traversable $parsers A Traversable of Twig_TokenParserInterface instances
+ * @param array|Traversable $brokers A Traversable of Twig_TokenParserBrokerInterface instances
+ */
+ public function __construct($parsers = array(), $brokers = array())
+ {
+ foreach ($parsers as $parser) {
+ if (!$parser instanceof Twig_TokenParserInterface) {
+ throw new Twig_Error('$parsers must a an array of Twig_TokenParserInterface');
+ }
+ $this->parsers[$parser->getTag()] = $parser;
+ }
+ foreach ($brokers as $broker) {
+ if (!$broker instanceof Twig_TokenParserBrokerInterface) {
+ throw new Twig_Error('$brokers must a an array of Twig_TokenParserBrokerInterface');
+ }
+ $this->brokers[] = $broker;
+ }
+ }
+
+ /**
+ * Adds a TokenParser.
+ *
+ * @param Twig_TokenParserInterface $parser A Twig_TokenParserInterface instance
+ */
+ public function addTokenParser(Twig_TokenParserInterface $parser)
+ {
+ $this->parsers[$parser->getTag()] = $parser;
+ }
+
+ /**
+ * Adds a TokenParserBroker.
+ *
+ * @param Twig_TokenParserBroker $broker A Twig_TokenParserBroker instance
+ */
+ public function addTokenParserBroker(Twig_TokenParserBroker $broker)
+ {
+ $this->brokers[] = $broker;
+ }
+
+ /**
+ * Gets a suitable TokenParser for a tag.
+ *
+ * First looks in parsers, then in brokers.
+ *
+ * @param string $tag A tag name
+ *
+ * @return null|Twig_TokenParserInterface A Twig_TokenParserInterface or null if no suitable TokenParser was found
+ */
+ public function getTokenParser($tag)
+ {
+ if (isset($this->parsers[$tag])) {
+ return $this->parsers[$tag];
+ }
+ $broker = end($this->brokers);
+ while (false !== $broker) {
+ $parser = $broker->getTokenParser($tag);
+ if (null !== $parser) {
+ return $parser;
+ }
+ $broker = prev($this->brokers);
+ }
+ return null;
+ }
+
+ public function getParser()
+ {
+ return $this->parser;
+ }
+
+ public function setParser(Twig_ParserInterface $parser)
+ {
+ $this->parser = $parser;
+ foreach ($this->parsers as $tokenParser) {
+ $tokenParser->setParser($parser);
+ }
+ foreach ($this->brokers as $broker) {
+ $broker->setParser($parser);
+ }
+ }
+}