the whole shebang

vendor/symfony/routing/Symfony/Component/Routing/Matcher/Dumper/DumperPrefixCollection.php

@@ -0,0 +1,108 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Routing\Matcher\Dumper;
+
+/**
+ * Prefix tree of routes preserving routes order.
+ *
+ * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
+ */
+class DumperPrefixCollection extends DumperCollection
+{
+    /**
+     * @var string
+     */
+    private $prefix = '';
+
+    /**
+     * Returns the prefix.
+     *
+     * @return string The prefix
+     */
+    public function getPrefix()
+    {
+        return $this->prefix;
+    }
+
+    /**
+     * Sets the prefix.
+     *
+     * @param string $prefix The prefix
+     */
+    public function setPrefix($prefix)
+    {
+        $this->prefix = $prefix;
+    }
+
+    /**
+     * Adds a route in the tree.
+     *
+     * @param DumperRoute $route The route
+     *
+     * @return DumperPrefixCollection The node the route was added to
+     *
+     * @throws \LogicException
+     */
+    public function addPrefixRoute(DumperRoute $route)
+    {
+        $prefix = $route->getRoute()->compile()->getStaticPrefix();
+
+        // Same prefix, add to current leave
+        if ($this->prefix === $prefix) {
+            $this->add($route);
+
+            return $this;
+        }
+
+        // Prefix starts with route's prefix
+        if ('' === $this->prefix || 0 === strpos($prefix, $this->prefix)) {
+            $collection = new DumperPrefixCollection();
+            $collection->setPrefix(substr($prefix, 0, strlen($this->prefix)+1));
+            $this->add($collection);
+
+            return $collection->addPrefixRoute($route);
+        }
+
+        // No match, fallback to parent (recursively)
+
+        if (null === $parent = $this->getParent()) {
+            throw new \LogicException("The collection root must not have a prefix");
+        }
+
+        return $parent->addPrefixRoute($route);
+    }
+
+    /**
+     * Merges nodes whose prefix ends with a slash
+     *
+     * Children of a node whose prefix ends with a slash are moved to the parent node
+     */
+    public function mergeSlashNodes()
+    {
+        $children = array();
+
+        foreach ($this as $child) {
+            if ($child instanceof self) {
+                $child->mergeSlashNodes();
+                if ('/' === substr($child->prefix, -1)) {
+                    $children = array_merge($children, $child->all());
+                } else {
+                    $children[] = $child;
+                }
+            } else {
+                $children[] = $child;
+            }
+        }
+
+        $this->setAll($children);
+    }
+}