Initial Commit

vendor/symfony/routing/Matcher/Dumper/MatcherDumper.php

@@ -0,0 +1,37 @@
+<?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;
+
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * MatcherDumper is the abstract class for all built-in matcher dumpers.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class MatcherDumper implements MatcherDumperInterface
+{
+    private $routes;
+
+    public function __construct(RouteCollection $routes)
+    {
+        $this->routes = $routes;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getRoutes()
+    {
+        return $this->routes;
+    }
+}

vendor/symfony/routing/Matcher/Dumper/MatcherDumperInterface.php

@@ -0,0 +1,39 @@
+<?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;
+
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * MatcherDumperInterface is the interface that all matcher dumper classes must implement.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface MatcherDumperInterface
+{
+    /**
+     * Dumps a set of routes to a string representation of executable code
+     * that can then be used to match a request against these routes.
+     *
+     * @param array $options An array of options
+     *
+     * @return string Executable code
+     */
+    public function dump(array $options = array());
+
+    /**
+     * Gets the routes to dump.
+     *
+     * @return RouteCollection A RouteCollection instance
+     */
+    public function getRoutes();
+}

vendor/symfony/routing/Matcher/Dumper/PhpMatcherDumper.php

@@ -0,0 +1,778 @@
+<?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;
+
+use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
+use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
+use Symfony\Component\Routing\Matcher\RedirectableUrlMatcherInterface;
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * PhpMatcherDumper creates a PHP class able to match URLs for a given set of routes.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Tobias Schultze <http://tobion.de>
+ * @author Arnaud Le Blanc <arnaud.lb@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class PhpMatcherDumper extends MatcherDumper
+{
+    private $expressionLanguage;
+    private $signalingException;
+
+    /**
+     * @var ExpressionFunctionProviderInterface[]
+     */
+    private $expressionLanguageProviders = array();
+
+    /**
+     * Dumps a set of routes to a PHP class.
+     *
+     * Available options:
+     *
+     *  * class:      The class name
+     *  * base_class: The base class name
+     *
+     * @param array $options An array of options
+     *
+     * @return string A PHP class representing the matcher class
+     */
+    public function dump(array $options = array())
+    {
+        $options = array_replace(array(
+            'class' => 'ProjectUrlMatcher',
+            'base_class' => 'Symfony\\Component\\Routing\\Matcher\\UrlMatcher',
+        ), $options);
+
+        // trailing slash support is only enabled if we know how to redirect the user
+        $interfaces = class_implements($options['base_class']);
+        $supportsRedirections = isset($interfaces[RedirectableUrlMatcherInterface::class]);
+
+        return <<<EOF
+<?php
+
+use Symfony\Component\Routing\Exception\MethodNotAllowedException;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
+use Symfony\Component\Routing\RequestContext;
+
+/**
+ * This class has been auto-generated
+ * by the Symfony Routing Component.
+ */
+class {$options['class']} extends {$options['base_class']}
+{
+    public function __construct(RequestContext \$context)
+    {
+        \$this->context = \$context;
+    }
+
+{$this->generateMatchMethod($supportsRedirections)}
+}
+
+EOF;
+    }
+
+    public function addExpressionLanguageProvider(ExpressionFunctionProviderInterface $provider)
+    {
+        $this->expressionLanguageProviders[] = $provider;
+    }
+
+    /**
+     * Generates the code for the match method implementing UrlMatcherInterface.
+     */
+    private function generateMatchMethod(bool $supportsRedirections): string
+    {
+        // Group hosts by same-suffix, re-order when possible
+        $matchHost = false;
+        $routes = new StaticPrefixCollection();
+        foreach ($this->getRoutes()->all() as $name => $route) {
+            if ($host = $route->getHost()) {
+                $matchHost = true;
+                $host = '/'.strtr(strrev($host), '}.{', '(/)');
+            }
+
+            $routes->addRoute($host ?: '/(.*)', array($name, $route));
+        }
+        $routes = $matchHost ? $routes->populateCollection(new RouteCollection()) : $this->getRoutes();
+
+        $code = rtrim($this->compileRoutes($routes, $matchHost), "\n");
+        $fetchHost = $matchHost ? "        \$host = strtolower(\$context->getHost());\n" : '';
+
+        $code = <<<EOF
+    {
+        \$allow = \$allowSchemes = array();
+        \$pathinfo = rawurldecode(\$rawPathinfo);
+        \$context = \$this->context;
+        \$requestMethod = \$canonicalMethod = \$context->getMethod();
+{$fetchHost}
+        if ('HEAD' === \$requestMethod) {
+            \$canonicalMethod = 'GET';
+        }
+
+$code
+
+EOF;
+
+        if ($supportsRedirections) {
+            return <<<'EOF'
+    public function match($pathinfo)
+    {
+        $allow = $allowSchemes = array();
+        if ($ret = $this->doMatch($pathinfo, $allow, $allowSchemes)) {
+            return $ret;
+        }
+        if ($allow) {
+            throw new MethodNotAllowedException(array_keys($allow));
+        }
+        if (!in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+            // no-op
+        } elseif ($allowSchemes) {
+            redirect_scheme:
+            $scheme = $this->context->getScheme();
+            $this->context->setScheme(key($allowSchemes));
+            try {
+                if ($ret = $this->doMatch($pathinfo)) {
+                    return $this->redirect($pathinfo, $ret['_route'], $this->context->getScheme()) + $ret;
+                }
+            } finally {
+                $this->context->setScheme($scheme);
+            }
+        } elseif ('/' !== $pathinfo) {
+            $pathinfo = '/' !== $pathinfo[-1] ? $pathinfo.'/' : substr($pathinfo, 0, -1);
+            if ($ret = $this->doMatch($pathinfo, $allow, $allowSchemes)) {
+                return $this->redirect($pathinfo, $ret['_route']) + $ret;
+            }
+            if ($allowSchemes) {
+                goto redirect_scheme;
+            }
+        }
+
+        throw new ResourceNotFoundException();
+    }
+
+    private function doMatch(string $rawPathinfo, array &$allow = array(), array &$allowSchemes = array()): ?array
+
+EOF
+                .$code."\n        return null;\n    }";
+        }
+
+        return "    public function match(\$rawPathinfo)\n".$code."\n        throw \$allow ? new MethodNotAllowedException(array_keys(\$allow)) : new ResourceNotFoundException();\n    }";
+    }
+
+    /**
+     * Generates PHP code to match a RouteCollection with all its routes.
+     */
+    private function compileRoutes(RouteCollection $routes, bool $matchHost): string
+    {
+        list($staticRoutes, $dynamicRoutes) = $this->groupStaticRoutes($routes);
+
+        $code = $this->compileStaticRoutes($staticRoutes, $matchHost);
+        $chunkLimit = \count($dynamicRoutes);
+
+        while (true) {
+            try {
+                $this->signalingException = new \RuntimeException('preg_match(): Compilation failed: regular expression is too large');
+                $code .= $this->compileDynamicRoutes($dynamicRoutes, $matchHost, $chunkLimit);
+                break;
+            } catch (\Exception $e) {
+                if (1 < $chunkLimit && $this->signalingException === $e) {
+                    $chunkLimit = 1 + ($chunkLimit >> 1);
+                    continue;
+                }
+                throw $e;
+            }
+        }
+
+        // used to display the Welcome Page in apps that don't define a homepage
+        $code .= "        if ('/' === \$pathinfo && !\$allow && !\$allowSchemes) {\n";
+        $code .= "            throw new Symfony\Component\Routing\Exception\NoConfigurationException();\n";
+        $code .= "        }\n";
+
+        return $code;
+    }
+
+    /**
+     * Splits static routes from dynamic routes, so that they can be matched first, using a simple switch.
+     */
+    private function groupStaticRoutes(RouteCollection $collection): array
+    {
+        $staticRoutes = $dynamicRegex = array();
+        $dynamicRoutes = new RouteCollection();
+
+        foreach ($collection->all() as $name => $route) {
+            $compiledRoute = $route->compile();
+            $hostRegex = $compiledRoute->getHostRegex();
+            $regex = $compiledRoute->getRegex();
+            if (!$compiledRoute->getPathVariables()) {
+                $host = !$compiledRoute->getHostVariables() ? $route->getHost() : '';
+                $url = $route->getPath();
+                foreach ($dynamicRegex as list($hostRx, $rx)) {
+                    if (preg_match($rx, $url) && (!$host || !$hostRx || preg_match($hostRx, $host))) {
+                        $dynamicRegex[] = array($hostRegex, $regex);
+                        $dynamicRoutes->add($name, $route);
+                        continue 2;
+                    }
+                }
+
+                $staticRoutes[$url][$name] = $route;
+            } else {
+                $dynamicRegex[] = array($hostRegex, $regex);
+                $dynamicRoutes->add($name, $route);
+            }
+        }
+
+        return array($staticRoutes, $dynamicRoutes);
+    }
+
+    /**
+     * Compiles static routes in a switch statement.
+     *
+     * Condition-less paths are put in a static array in the switch's default, with generic matching logic.
+     * Paths that can match two or more routes, or have user-specified conditions are put in separate switch's cases.
+     *
+     * @throws \LogicException
+     */
+    private function compileStaticRoutes(array $staticRoutes, bool $matchHost): string
+    {
+        if (!$staticRoutes) {
+            return '';
+        }
+        $code = $default = '';
+
+        foreach ($staticRoutes as $url => $routes) {
+            if (1 === \count($routes)) {
+                foreach ($routes as $name => $route) {
+                }
+
+                if (!$route->getCondition()) {
+                    $defaults = $route->getDefaults();
+                    if (isset($defaults['_canonical_route'])) {
+                        $name = $defaults['_canonical_route'];
+                        unset($defaults['_canonical_route']);
+                    }
+                    $default .= sprintf(
+                        "%s => array(%s, %s, %s, %s),\n",
+                        self::export($url),
+                        self::export(array('_route' => $name) + $defaults),
+                        self::export(!$route->compile()->getHostVariables() ? $route->getHost() : $route->compile()->getHostRegex() ?: null),
+                        self::export(array_flip($route->getMethods()) ?: null),
+                        self::export(array_flip($route->getSchemes()) ?: null)
+                    );
+                    continue;
+                }
+            }
+
+            $code .= sprintf("        case %s:\n", self::export($url));
+            foreach ($routes as $name => $route) {
+                $code .= $this->compileRoute($route, $name, true);
+            }
+            $code .= "            break;\n";
+        }
+
+        if ($default) {
+            $code .= <<<EOF
+        default:
+            \$routes = array(
+{$this->indent($default, 4)}            );
+
+            if (!isset(\$routes[\$pathinfo])) {
+                break;
+            }
+            list(\$ret, \$requiredHost, \$requiredMethods, \$requiredSchemes) = \$routes[\$pathinfo];
+{$this->compileSwitchDefault(false, $matchHost)}
+EOF;
+        }
+
+        return sprintf("        switch (\$pathinfo) {\n%s        }\n\n", $this->indent($code));
+    }
+
+    /**
+     * Compiles a regular expression followed by a switch statement to match dynamic routes.
+     *
+     * The regular expression matches both the host and the pathinfo at the same time. For stellar performance,
+     * it is built as a tree of patterns, with re-ordering logic to group same-prefix routes together when possible.
+     *
+     * Patterns are named so that we know which one matched (https://pcre.org/current/doc/html/pcre2syntax.html#SEC23).
+     * This name is used to "switch" to the additional logic required to match the final route.
+     *
+     * Condition-less paths are put in a static array in the switch's default, with generic matching logic.
+     * Paths that can match two or more routes, or have user-specified conditions are put in separate switch's cases.
+     *
+     * Last but not least:
+     *  - Because it is not possibe to mix unicode/non-unicode patterns in a single regexp, several of them can be generated.
+     *  - The same regexp can be used several times when the logic in the switch rejects the match. When this happens, the
+     *    matching-but-failing subpattern is blacklisted by replacing its name by "(*F)", which forces a failure-to-match.
+     *    To ease this backlisting operation, the name of subpatterns is also the string offset where the replacement should occur.
+     */
+    private function compileDynamicRoutes(RouteCollection $collection, bool $matchHost, int $chunkLimit): string
+    {
+        if (!$collection->all()) {
+            return '';
+        }
+        $code = '';
+        $state = (object) array(
+            'regex' => '',
+            'switch' => '',
+            'default' => '',
+            'mark' => 0,
+            'markTail' => 0,
+            'hostVars' => array(),
+            'vars' => array(),
+        );
+        $state->getVars = static function ($m) use ($state) {
+            if ('_route' === $m[1]) {
+                return '?:';
+            }
+
+            $state->vars[] = $m[1];
+
+            return '';
+        };
+
+        $chunkSize = 0;
+        $prev = null;
+        $perModifiers = array();
+        foreach ($collection->all() as $name => $route) {
+            preg_match('#[a-zA-Z]*$#', $route->compile()->getRegex(), $rx);
+            if ($chunkLimit < ++$chunkSize || $prev !== $rx[0] && $route->compile()->getPathVariables()) {
+                $chunkSize = 1;
+                $routes = new RouteCollection();
+                $perModifiers[] = array($rx[0], $routes);
+                $prev = $rx[0];
+            }
+            $routes->add($name, $route);
+        }
+
+        foreach ($perModifiers as list($modifiers, $routes)) {
+            $prev = false;
+            $perHost = array();
+            foreach ($routes->all() as $name => $route) {
+                $regex = $route->compile()->getHostRegex();
+                if ($prev !== $regex) {
+                    $routes = new RouteCollection();
+                    $perHost[] = array($regex, $routes);
+                    $prev = $regex;
+                }
+                $routes->add($name, $route);
+            }
+            $prev = false;
+            $rx = '{^(?';
+            $code .= "\n            {$state->mark} => ".self::export($rx);
+            $state->mark += \strlen($rx);
+            $state->regex = $rx;
+
+            foreach ($perHost as list($hostRegex, $routes)) {
+                if ($matchHost) {
+                    if ($hostRegex) {
+                        preg_match('#^.\^(.*)\$.[a-zA-Z]*$#', $hostRegex, $rx);
+                        $state->vars = array();
+                        $hostRegex = '(?i:'.preg_replace_callback('#\?P<([^>]++)>#', $state->getVars, $rx[1]).')\.';
+                        $state->hostVars = $state->vars;
+                    } else {
+                        $hostRegex = '(?:(?:[^./]*+\.)++)';
+                        $state->hostVars = array();
+                    }
+                    $state->mark += \strlen($rx = ($prev ? ')' : '')."|{$hostRegex}(?");
+                    $code .= "\n                .".self::export($rx);
+                    $state->regex .= $rx;
+                    $prev = true;
+                }
+
+                $tree = new StaticPrefixCollection();
+                foreach ($routes->all() as $name => $route) {
+                    preg_match('#^.\^(.*)\$.[a-zA-Z]*$#', $route->compile()->getRegex(), $rx);
+
+                    $state->vars = array();
+                    $regex = preg_replace_callback('#\?P<([^>]++)>#', $state->getVars, $rx[1]);
+                    $tree->addRoute($regex, array($name, $regex, $state->vars, $route));
+                }
+
+                $code .= $this->compileStaticPrefixCollection($tree, $state);
+            }
+            if ($matchHost) {
+                $code .= "\n                .')'";
+                $state->regex .= ')';
+            }
+            $rx = ")$}{$modifiers}";
+            $code .= "\n                .'{$rx}',";
+            $state->regex .= $rx;
+            $state->markTail = 0;
+
+            // if the regex is too large, throw a signaling exception to recompute with smaller chunk size
+            set_error_handler(function ($type, $message) { throw 0 === strpos($message, $this->signalingException->getMessage()) ? $this->signalingException : new \ErrorException($message); });
+            try {
+                preg_match($state->regex, '');
+            } finally {
+                restore_error_handler();
+            }
+        }
+
+        if ($state->default) {
+            $state->switch .= <<<EOF
+        default:
+            \$routes = array(
+{$this->indent($state->default, 4)}            );
+
+            list(\$ret, \$vars, \$requiredMethods, \$requiredSchemes) = \$routes[\$m];
+{$this->compileSwitchDefault(true, $matchHost)}
+EOF;
+        }
+
+        $matchedPathinfo = $matchHost ? '$host.\'.\'.$pathinfo' : '$pathinfo';
+        unset($state->getVars);
+
+        return <<<EOF
+        \$matchedPathinfo = {$matchedPathinfo};
+        \$regexList = array({$code}
+        );
+
+        foreach (\$regexList as \$offset => \$regex) {
+            while (preg_match(\$regex, \$matchedPathinfo, \$matches)) {
+                switch (\$m = (int) \$matches['MARK']) {
+{$this->indent($state->switch, 3)}                }
+
+                if ({$state->mark} === \$m) {
+                    break;
+                }
+                \$regex = substr_replace(\$regex, 'F', \$m - \$offset, 1 + strlen(\$m));
+                \$offset += strlen(\$m);
+            }
+        }
+
+EOF;
+    }
+
+    /**
+     * Compiles a regexp tree of subpatterns that matches nested same-prefix routes.
+     *
+     * @param \stdClass $state A simple state object that keeps track of the progress of the compilation,
+     *                         and gathers the generated switch's "case" and "default" statements
+     */
+    private function compileStaticPrefixCollection(StaticPrefixCollection $tree, \stdClass $state, int $prefixLen = 0): string
+    {
+        $code = '';
+        $prevRegex = null;
+        $routes = $tree->getRoutes();
+
+        foreach ($routes as $i => $route) {
+            if ($route instanceof StaticPrefixCollection) {
+                $prevRegex = null;
+                $prefix = substr($route->getPrefix(), $prefixLen);
+                $state->mark += \strlen($rx = "|{$prefix}(?");
+                $code .= "\n                    .".self::export($rx);
+                $state->regex .= $rx;
+                $code .= $this->indent($this->compileStaticPrefixCollection($route, $state, $prefixLen + \strlen($prefix)));
+                $code .= "\n                    .')'";
+                $state->regex .= ')';
+                ++$state->markTail;
+                continue;
+            }
+
+            list($name, $regex, $vars, $route) = $route;
+            $compiledRoute = $route->compile();
+
+            if ($compiledRoute->getRegex() === $prevRegex) {
+                $state->switch = substr_replace($state->switch, $this->compileRoute($route, $name, false)."\n", -19, 0);
+                continue;
+            }
+
+            $state->mark += 3 + $state->markTail + \strlen($regex) - $prefixLen;
+            $state->markTail = 2 + \strlen($state->mark);
+            $rx = sprintf('|%s(*:%s)', substr($regex, $prefixLen), $state->mark);
+            $code .= "\n                    .".self::export($rx);
+            $state->regex .= $rx;
+            $vars = array_merge($state->hostVars, $vars);
+
+            if (!$route->getCondition() && (!\is_array($next = $routes[1 + $i] ?? null) || $regex !== $next[1])) {
+                $prevRegex = null;
+                $defaults = $route->getDefaults();
+                if (isset($defaults['_canonical_route'])) {
+                    $name = $defaults['_canonical_route'];
+                    unset($defaults['_canonical_route']);
+                }
+                $state->default .= sprintf(
+                    "%s => array(%s, %s, %s, %s),\n",
+                    $state->mark,
+                    self::export(array('_route' => $name) + $defaults),
+                    self::export($vars),
+                    self::export(array_flip($route->getMethods()) ?: null),
+                    self::export(array_flip($route->getSchemes()) ?: null)
+                );
+            } else {
+                $prevRegex = $compiledRoute->getRegex();
+                $combine = '            $matches = array(';
+                foreach ($vars as $j => $m) {
+                    $combine .= sprintf('%s => $matches[%d] ?? null, ', self::export($m), 1 + $j);
+                }
+                $combine = $vars ? substr_replace($combine, ");\n\n", -2) : '';
+
+                $state->switch .= <<<EOF
+        case {$state->mark}:
+{$combine}{$this->compileRoute($route, $name, false)}
+            break;
+
+EOF;
+            }
+        }
+
+        return $code;
+    }
+
+    /**
+     * A simple helper to compiles the switch's "default" for both static and dynamic routes.
+     */
+    private function compileSwitchDefault(bool $hasVars, bool $matchHost): string
+    {
+        if ($hasVars) {
+            $code = <<<EOF
+
+            foreach (\$vars as \$i => \$v) {
+                if (isset(\$matches[1 + \$i])) {
+                    \$ret[\$v] = \$matches[1 + \$i];
+                }
+            }
+
+EOF;
+        } elseif ($matchHost) {
+            $code = <<<EOF
+
+            if (\$requiredHost) {
+                if ('#' !== \$requiredHost[0] ? \$requiredHost !== \$host : !preg_match(\$requiredHost, \$host, \$hostMatches)) {
+                    break;
+                }
+                if ('#' === \$requiredHost[0] && \$hostMatches) {
+                    \$hostMatches['_route'] = \$ret['_route'];
+                    \$ret = \$this->mergeDefaults(\$hostMatches, \$ret);
+                }
+            }
+
+EOF;
+        } else {
+            $code = '';
+        }
+
+        $code .= <<<EOF
+
+            \$hasRequiredScheme = !\$requiredSchemes || isset(\$requiredSchemes[\$context->getScheme()]);
+            if (\$requiredMethods && !isset(\$requiredMethods[\$canonicalMethod]) && !isset(\$requiredMethods[\$requestMethod])) {
+                if (\$hasRequiredScheme) {
+                    \$allow += \$requiredMethods;
+                }
+                break;
+            }
+            if (!\$hasRequiredScheme) {
+                \$allowSchemes += \$requiredSchemes;
+                break;
+            }
+
+            return \$ret;
+
+EOF;
+
+        return $code;
+    }
+
+    /**
+     * Compiles a single Route to PHP code used to match it against the path info.
+     *
+     * @throws \LogicException
+     */
+    private function compileRoute(Route $route, string $name, bool $checkHost): string
+    {
+        $code = '';
+        $compiledRoute = $route->compile();
+        $conditions = array();
+        $matches = (bool) $compiledRoute->getPathVariables();
+        $hostMatches = (bool) $compiledRoute->getHostVariables();
+        $methods = array_flip($route->getMethods());
+
+        if ($route->getCondition()) {
+            $expression = $this->getExpressionLanguage()->compile($route->getCondition(), array('context', 'request'));
+
+            if (false !== strpos($expression, '$request')) {
+                $conditions[] = '($request = $request ?? $this->request ?: $this->createRequest($pathinfo))';
+            }
+            $conditions[] = $expression;
+        }
+
+        if (!$checkHost || !$compiledRoute->getHostRegex()) {
+            // no-op
+        } elseif ($hostMatches) {
+            $conditions[] = sprintf('preg_match(%s, $host, $hostMatches)', self::export($compiledRoute->getHostRegex()));
+        } else {
+            $conditions[] = sprintf('%s === $host', self::export($route->getHost()));
+        }
+
+        $conditions = implode(' && ', $conditions);
+
+        if ($conditions) {
+            $code .= <<<EOF
+        // $name
+        if ($conditions) {
+
+EOF;
+        } else {
+            $code .= "            // {$name}\n";
+        }
+
+        $gotoname = 'not_'.preg_replace('/[^A-Za-z0-9_]/', '', $name);
+
+        // the offset where the return value is appended below, with indendation
+        $retOffset = 12 + \strlen($code);
+        $defaults = $route->getDefaults();
+        if (isset($defaults['_canonical_route'])) {
+            $name = $defaults['_canonical_route'];
+            unset($defaults['_canonical_route']);
+        }
+
+        // optimize parameters array
+        if ($matches || $hostMatches) {
+            $vars = array("array('_route' => '$name')");
+            if ($matches || ($hostMatches && !$checkHost)) {
+                $vars[] = '$matches';
+            }
+            if ($hostMatches && $checkHost) {
+                $vars[] = '$hostMatches';
+            }
+
+            $code .= sprintf(
+                "            \$ret = \$this->mergeDefaults(%s, %s);\n",
+                implode(' + ', $vars),
+                self::export($defaults)
+            );
+        } elseif ($defaults) {
+            $code .= sprintf("            \$ret = %s;\n", self::export(array('_route' => $name) + $defaults));
+        } else {
+            $code .= sprintf("            \$ret = array('_route' => '%s');\n", $name);
+        }
+
+        if ($methods) {
+            $methodVariable = isset($methods['GET']) ? '$canonicalMethod' : '$requestMethod';
+            $methods = self::export($methods);
+        }
+
+        if ($schemes = $route->getSchemes()) {
+            $schemes = self::export(array_flip($schemes));
+            if ($methods) {
+                $code .= <<<EOF
+            \$requiredSchemes = $schemes;
+            \$hasRequiredScheme = isset(\$requiredSchemes[\$context->getScheme()]);
+            if (!isset((\$a = {$methods})[{$methodVariable}])) {
+                if (\$hasRequiredScheme) {
+                    \$allow += \$a;
+                }
+                goto $gotoname;
+            }
+            if (!\$hasRequiredScheme) {
+                \$allowSchemes += \$requiredSchemes;
+                goto $gotoname;
+            }
+
+
+EOF;
+            } else {
+                $code .= <<<EOF
+            \$requiredSchemes = $schemes;
+            if (!isset(\$requiredSchemes[\$context->getScheme()])) {
+                \$allowSchemes += \$requiredSchemes;
+                goto $gotoname;
+            }
+
+
+EOF;
+            }
+        } elseif ($methods) {
+            $code .= <<<EOF
+            if (!isset((\$a = {$methods})[{$methodVariable}])) {
+                \$allow += \$a;
+                goto $gotoname;
+            }
+
+
+EOF;
+        }
+
+        if ($schemes || $methods) {
+            $code .= "            return \$ret;\n";
+        } else {
+            $code = substr_replace($code, 'return', $retOffset, 6);
+        }
+        if ($conditions) {
+            $code .= "        }\n";
+        } elseif ($schemes || $methods) {
+            $code .= '    ';
+        }
+
+        if ($schemes || $methods) {
+            $code .= "        $gotoname:\n";
+        }
+
+        return $conditions ? $this->indent($code) : $code;
+    }
+
+    private function getExpressionLanguage()
+    {
+        if (null === $this->expressionLanguage) {
+            if (!class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
+                throw new \RuntimeException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
+            }
+            $this->expressionLanguage = new ExpressionLanguage(null, $this->expressionLanguageProviders);
+        }
+
+        return $this->expressionLanguage;
+    }
+
+    private function indent($code, $level = 1)
+    {
+        return preg_replace('/^./m', str_repeat('    ', $level).'$0', $code);
+    }
+
+    /**
+     * @internal
+     */
+    public static function export($value): string
+    {
+        if (null === $value) {
+            return 'null';
+        }
+        if (!\is_array($value)) {
+            if (\is_object($value)) {
+                throw new \InvalidArgumentException('Symfony\Component\Routing\Route cannot contain objects.');
+            }
+
+            return str_replace("\n", '\'."\n".\'', var_export($value, true));
+        }
+        if (!$value) {
+            return 'array()';
+        }
+
+        $i = 0;
+        $export = 'array(';
+
+        foreach ($value as $k => $v) {
+            if ($i === $k) {
+                ++$i;
+            } else {
+                $export .= self::export($k).' => ';
+
+                if (\is_int($k) && $i < $k) {
+                    $i = 1 + $k;
+                }
+            }
+
+            $export .= self::export($v).', ';
+        }
+
+        return substr_replace($export, ')', -2);
+    }
+}

vendor/symfony/routing/Matcher/Dumper/StaticPrefixCollection.php

@@ -0,0 +1,202 @@
+<?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;
+
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * Prefix tree of routes preserving routes order.
+ *
+ * @author Frank de Jonge <info@frankdejonge.nl>
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+class StaticPrefixCollection
+{
+    private $prefix;
+
+    /**
+     * @var string[]
+     */
+    private $staticPrefixes = array();
+
+    /**
+     * @var string[]
+     */
+    private $prefixes = array();
+
+    /**
+     * @var array[]|self[]
+     */
+    private $items = array();
+
+    public function __construct(string $prefix = '/')
+    {
+        $this->prefix = $prefix;
+    }
+
+    public function getPrefix(): string
+    {
+        return $this->prefix;
+    }
+
+    /**
+     * @return array[]|self[]
+     */
+    public function getRoutes(): array
+    {
+        return $this->items;
+    }
+
+    /**
+     * Adds a route to a group.
+     *
+     * @param array|self $route
+     */
+    public function addRoute(string $prefix, $route)
+    {
+        list($prefix, $staticPrefix) = $this->getCommonPrefix($prefix, $prefix);
+
+        for ($i = \count($this->items) - 1; 0 <= $i; --$i) {
+            $item = $this->items[$i];
+
+            list($commonPrefix, $commonStaticPrefix) = $this->getCommonPrefix($prefix, $this->prefixes[$i]);
+
+            if ($this->prefix === $commonPrefix) {
+                // the new route and a previous one have no common prefix, let's see if they are exclusive to each others
+
+                if ($this->prefix !== $staticPrefix && $this->prefix !== $this->staticPrefixes[$i]) {
+                    // the new route and the previous one have exclusive static prefixes
+                    continue;
+                }
+
+                if ($this->prefix === $staticPrefix && $this->prefix === $this->staticPrefixes[$i]) {
+                    // the new route and the previous one have no static prefix
+                    break;
+                }
+
+                if ($this->prefixes[$i] !== $this->staticPrefixes[$i] && $this->prefix === $this->staticPrefixes[$i]) {
+                    // the previous route is non-static and has no static prefix
+                    break;
+                }
+
+                if ($prefix !== $staticPrefix && $this->prefix === $staticPrefix) {
+                    // the new route is non-static and has no static prefix
+                    break;
+                }
+
+                continue;
+            }
+
+            if ($item instanceof self && $this->prefixes[$i] === $commonPrefix) {
+                // the new route is a child of a previous one, let's nest it
+                $item->addRoute($prefix, $route);
+            } else {
+                // the new route and a previous one have a common prefix, let's merge them
+                $child = new self($commonPrefix);
+                list($child->prefixes[0], $child->staticPrefixes[0]) = $child->getCommonPrefix($this->prefixes[$i], $this->prefixes[$i]);
+                list($child->prefixes[1], $child->staticPrefixes[1]) = $child->getCommonPrefix($prefix, $prefix);
+                $child->items = array($this->items[$i], $route);
+
+                $this->staticPrefixes[$i] = $commonStaticPrefix;
+                $this->prefixes[$i] = $commonPrefix;
+                $this->items[$i] = $child;
+            }
+
+            return;
+        }
+
+        // No optimised case was found, in this case we simple add the route for possible
+        // grouping when new routes are added.
+        $this->staticPrefixes[] = $staticPrefix;
+        $this->prefixes[] = $prefix;
+        $this->items[] = $route;
+    }
+
+    /**
+     * Linearizes back a set of nested routes into a collection.
+     */
+    public function populateCollection(RouteCollection $routes): RouteCollection
+    {
+        foreach ($this->items as $route) {
+            if ($route instanceof self) {
+                $route->populateCollection($routes);
+            } else {
+                $routes->add(...$route);
+            }
+        }
+
+        return $routes;
+    }
+
+    /**
+     * Gets the full and static common prefixes between two route patterns.
+     *
+     * The static prefix stops at last at the first opening bracket.
+     */
+    private function getCommonPrefix(string $prefix, string $anotherPrefix): array
+    {
+        $baseLength = \strlen($this->prefix);
+        $end = min(\strlen($prefix), \strlen($anotherPrefix));
+        $staticLength = null;
+        set_error_handler(array(__CLASS__, 'handleError'));
+
+        for ($i = $baseLength; $i < $end && $prefix[$i] === $anotherPrefix[$i]; ++$i) {
+            if ('(' === $prefix[$i]) {
+                $staticLength = $staticLength ?? $i;
+                for ($j = 1 + $i, $n = 1; $j < $end && 0 < $n; ++$j) {
+                    if ($prefix[$j] !== $anotherPrefix[$j]) {
+                        break 2;
+                    }
+                    if ('(' === $prefix[$j]) {
+                        ++$n;
+                    } elseif (')' === $prefix[$j]) {
+                        --$n;
+                    } elseif ('\\' === $prefix[$j] && (++$j === $end || $prefix[$j] !== $anotherPrefix[$j])) {
+                        --$j;
+                        break;
+                    }
+                }
+                if (0 < $n) {
+                    break;
+                }
+                if (('?' === ($prefix[$j] ?? '') || '?' === ($anotherPrefix[$j] ?? '')) && ($prefix[$j] ?? '') !== ($anotherPrefix[$j] ?? '')) {
+                    break;
+                }
+                $subPattern = substr($prefix, $i, $j - $i);
+                if ($prefix !== $anotherPrefix && !preg_match('/^\(\[[^\]]++\]\+\+\)$/', $subPattern) && !preg_match('{(?<!'.$subPattern.')}', '')) {
+                    // sub-patterns of variable length are not considered as common prefixes because their greediness would break in-order matching
+                    break;
+                }
+                $i = $j - 1;
+            } elseif ('\\' === $prefix[$i] && (++$i === $end || $prefix[$i] !== $anotherPrefix[$i])) {
+                --$i;
+                break;
+            }
+        }
+        restore_error_handler();
+        if ($i < $end && 0b10 === (\ord($prefix[$i]) >> 6) && preg_match('//u', $prefix.' '.$anotherPrefix)) {
+            do {
+                // Prevent cutting in the middle of an UTF-8 characters
+                --$i;
+            } while (0b10 === (\ord($prefix[$i]) >> 6));
+        }
+
+        return array(substr($prefix, 0, $i), substr($prefix, 0, $staticLength ?? $i));
+    }
+
+    public static function handleError($type, $msg)
+    {
+        return 0 === strpos($msg, 'preg_match(): Compilation failed: lookbehind assertion is not fixed length');
+    }
+}

vendor/symfony/routing/Matcher/RedirectableUrlMatcher.php

@@ -0,0 +1,64 @@
+<?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;
+
+use Symfony\Component\Routing\Exception\ExceptionInterface;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class RedirectableUrlMatcher extends UrlMatcher implements RedirectableUrlMatcherInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function match($pathinfo)
+    {
+        try {
+            return parent::match($pathinfo);
+        } catch (ResourceNotFoundException $e) {
+            if (!\in_array($this->context->getMethod(), array('HEAD', 'GET'), true)) {
+                throw $e;
+            }
+
+            if ($this->allowSchemes) {
+                redirect_scheme:
+                $scheme = $this->context->getScheme();
+                $this->context->setScheme(current($this->allowSchemes));
+                try {
+                    $ret = parent::match($pathinfo);
+
+                    return $this->redirect($pathinfo, $ret['_route'] ?? null, $this->context->getScheme()) + $ret;
+                } catch (ExceptionInterface $e2) {
+                    throw $e;
+                } finally {
+                    $this->context->setScheme($scheme);
+                }
+            } elseif ('/' === $pathinfo) {
+                throw $e;
+            } else {
+                try {
+                    $pathinfo = '/' !== $pathinfo[-1] ? $pathinfo.'/' : substr($pathinfo, 0, -1);
+                    $ret = parent::match($pathinfo);
+
+                    return $this->redirect($pathinfo, $ret['_route'] ?? null) + $ret;
+                } catch (ExceptionInterface $e2) {
+                    if ($this->allowSchemes) {
+                        goto redirect_scheme;
+                    }
+                    throw $e;
+                }
+            }
+        }
+    }
+}

vendor/symfony/routing/Matcher/RedirectableUrlMatcherInterface.php

@@ -0,0 +1,31 @@
+<?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;
+
+/**
+ * RedirectableUrlMatcherInterface knows how to redirect the user.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface RedirectableUrlMatcherInterface
+{
+    /**
+     * Redirects the user to another URL.
+     *
+     * @param string      $path   The path info to redirect to
+     * @param string      $route  The route name that matched
+     * @param string|null $scheme The URL scheme (null to keep the current one)
+     *
+     * @return array An array of parameters
+     */
+    public function redirect($path, $route, $scheme = null);
+}

vendor/symfony/routing/Matcher/RequestMatcherInterface.php

@@ -0,0 +1,39 @@
+<?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;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Exception\MethodNotAllowedException;
+use Symfony\Component\Routing\Exception\NoConfigurationException;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
+
+/**
+ * RequestMatcherInterface is the interface that all request matcher classes must implement.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface RequestMatcherInterface
+{
+    /**
+     * Tries to match a request with a set of routes.
+     *
+     * If the matcher can not find information, it must throw one of the exceptions documented
+     * below.
+     *
+     * @return array An array of parameters
+     *
+     * @throws NoConfigurationException  If no routing configuration could be found
+     * @throws ResourceNotFoundException If no matching resource could be found
+     * @throws MethodNotAllowedException If a matching resource was found but the request method is not allowed
+     */
+    public function matchRequest(Request $request);
+}

vendor/symfony/routing/Matcher/TraceableUrlMatcher.php

@@ -0,0 +1,141 @@
+<?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;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Exception\ExceptionInterface;
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * TraceableUrlMatcher helps debug path info matching by tracing the match.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class TraceableUrlMatcher extends UrlMatcher
+{
+    const ROUTE_DOES_NOT_MATCH = 0;
+    const ROUTE_ALMOST_MATCHES = 1;
+    const ROUTE_MATCHES = 2;
+
+    protected $traces;
+
+    public function getTraces($pathinfo)
+    {
+        $this->traces = array();
+
+        try {
+            $this->match($pathinfo);
+        } catch (ExceptionInterface $e) {
+        }
+
+        return $this->traces;
+    }
+
+    public function getTracesForRequest(Request $request)
+    {
+        $this->request = $request;
+        $traces = $this->getTraces($request->getPathInfo());
+        $this->request = null;
+
+        return $traces;
+    }
+
+    protected function matchCollection($pathinfo, RouteCollection $routes)
+    {
+        foreach ($routes as $name => $route) {
+            $compiledRoute = $route->compile();
+
+            if (!preg_match($compiledRoute->getRegex(), $pathinfo, $matches)) {
+                // does it match without any requirements?
+                $r = new Route($route->getPath(), $route->getDefaults(), array(), $route->getOptions());
+                $cr = $r->compile();
+                if (!preg_match($cr->getRegex(), $pathinfo)) {
+                    $this->addTrace(sprintf('Path "%s" does not match', $route->getPath()), self::ROUTE_DOES_NOT_MATCH, $name, $route);
+
+                    continue;
+                }
+
+                foreach ($route->getRequirements() as $n => $regex) {
+                    $r = new Route($route->getPath(), $route->getDefaults(), array($n => $regex), $route->getOptions());
+                    $cr = $r->compile();
+
+                    if (\in_array($n, $cr->getVariables()) && !preg_match($cr->getRegex(), $pathinfo)) {
+                        $this->addTrace(sprintf('Requirement for "%s" does not match (%s)', $n, $regex), self::ROUTE_ALMOST_MATCHES, $name, $route);
+
+                        continue 2;
+                    }
+                }
+
+                continue;
+            }
+
+            // check host requirement
+            $hostMatches = array();
+            if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
+                $this->addTrace(sprintf('Host "%s" does not match the requirement ("%s")', $this->context->getHost(), $route->getHost()), self::ROUTE_ALMOST_MATCHES, $name, $route);
+
+                continue;
+            }
+
+            // check HTTP method requirement
+            if ($requiredMethods = $route->getMethods()) {
+                // HEAD and GET are equivalent as per RFC
+                if ('HEAD' === $method = $this->context->getMethod()) {
+                    $method = 'GET';
+                }
+
+                if (!\in_array($method, $requiredMethods)) {
+                    $this->allow = array_merge($this->allow, $requiredMethods);
+
+                    $this->addTrace(sprintf('Method "%s" does not match any of the required methods (%s)', $this->context->getMethod(), implode(', ', $requiredMethods)), self::ROUTE_ALMOST_MATCHES, $name, $route);
+
+                    continue;
+                }
+            }
+
+            // check condition
+            if ($condition = $route->getCondition()) {
+                if (!$this->getExpressionLanguage()->evaluate($condition, array('context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)))) {
+                    $this->addTrace(sprintf('Condition "%s" does not evaluate to "true"', $condition), self::ROUTE_ALMOST_MATCHES, $name, $route);
+
+                    continue;
+                }
+            }
+
+            // check HTTP scheme requirement
+            if ($requiredSchemes = $route->getSchemes()) {
+                $scheme = $this->context->getScheme();
+
+                if (!$route->hasScheme($scheme)) {
+                    $this->addTrace(sprintf('Scheme "%s" does not match any of the required schemes (%s); the user will be redirected to first required scheme', $scheme, implode(', ', $requiredSchemes)), self::ROUTE_ALMOST_MATCHES, $name, $route);
+
+                    return true;
+                }
+            }
+
+            $this->addTrace('Route matches!', self::ROUTE_MATCHES, $name, $route);
+
+            return true;
+        }
+    }
+
+    private function addTrace($log, $level = self::ROUTE_DOES_NOT_MATCH, $name = null, $route = null)
+    {
+        $this->traces[] = array(
+            'log' => $log,
+            'name' => $name,
+            'level' => $level,
+            'path' => null !== $route ? $route->getPath() : null,
+        );
+    }
+}

vendor/symfony/routing/Matcher/UrlMatcher.php

@@ -0,0 +1,271 @@
+<?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;
+
+use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
+use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Exception\MethodNotAllowedException;
+use Symfony\Component\Routing\Exception\NoConfigurationException;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
+use Symfony\Component\Routing\RequestContext;
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * UrlMatcher matches URL based on a set of routes.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class UrlMatcher implements UrlMatcherInterface, RequestMatcherInterface
+{
+    const REQUIREMENT_MATCH = 0;
+    const REQUIREMENT_MISMATCH = 1;
+    const ROUTE_MATCH = 2;
+
+    protected $context;
+
+    /**
+     * Collects HTTP methods that would be allowed for the request.
+     */
+    protected $allow = array();
+
+    /**
+     * Collects URI schemes that would be allowed for the request.
+     *
+     * @internal
+     */
+    protected $allowSchemes = array();
+
+    protected $routes;
+    protected $request;
+    protected $expressionLanguage;
+
+    /**
+     * @var ExpressionFunctionProviderInterface[]
+     */
+    protected $expressionLanguageProviders = array();
+
+    public function __construct(RouteCollection $routes, RequestContext $context)
+    {
+        $this->routes = $routes;
+        $this->context = $context;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setContext(RequestContext $context)
+    {
+        $this->context = $context;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getContext()
+    {
+        return $this->context;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function match($pathinfo)
+    {
+        $this->allow = $this->allowSchemes = array();
+
+        if ($ret = $this->matchCollection(rawurldecode($pathinfo), $this->routes)) {
+            return $ret;
+        }
+
+        if ('/' === $pathinfo && !$this->allow) {
+            throw new NoConfigurationException();
+        }
+
+        throw 0 < \count($this->allow)
+            ? new MethodNotAllowedException(array_unique($this->allow))
+            : new ResourceNotFoundException(sprintf('No routes found for "%s".', $pathinfo));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function matchRequest(Request $request)
+    {
+        $this->request = $request;
+
+        $ret = $this->match($request->getPathInfo());
+
+        $this->request = null;
+
+        return $ret;
+    }
+
+    public function addExpressionLanguageProvider(ExpressionFunctionProviderInterface $provider)
+    {
+        $this->expressionLanguageProviders[] = $provider;
+    }
+
+    /**
+     * Tries to match a URL with a set of routes.
+     *
+     * @param string          $pathinfo The path info to be parsed
+     * @param RouteCollection $routes   The set of routes
+     *
+     * @return array An array of parameters
+     *
+     * @throws NoConfigurationException  If no routing configuration could be found
+     * @throws ResourceNotFoundException If the resource could not be found
+     * @throws MethodNotAllowedException If the resource was found but the request method is not allowed
+     */
+    protected function matchCollection($pathinfo, RouteCollection $routes)
+    {
+        foreach ($routes as $name => $route) {
+            $compiledRoute = $route->compile();
+
+            // check the static prefix of the URL first. Only use the more expensive preg_match when it matches
+            if ('' !== $compiledRoute->getStaticPrefix() && 0 !== strpos($pathinfo, $compiledRoute->getStaticPrefix())) {
+                continue;
+            }
+
+            if (!preg_match($compiledRoute->getRegex(), $pathinfo, $matches)) {
+                continue;
+            }
+
+            $hostMatches = array();
+            if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
+                continue;
+            }
+
+            $status = $this->handleRouteRequirements($pathinfo, $name, $route);
+
+            if (self::REQUIREMENT_MISMATCH === $status[0]) {
+                continue;
+            }
+
+            $hasRequiredScheme = !$route->getSchemes() || $route->hasScheme($this->context->getScheme());
+            if ($requiredMethods = $route->getMethods()) {
+                // HEAD and GET are equivalent as per RFC
+                if ('HEAD' === $method = $this->context->getMethod()) {
+                    $method = 'GET';
+                }
+
+                if (!\in_array($method, $requiredMethods)) {
+                    if ($hasRequiredScheme) {
+                        $this->allow = array_merge($this->allow, $requiredMethods);
+                    }
+
+                    continue;
+                }
+            }
+
+            if (!$hasRequiredScheme) {
+                $this->allowSchemes = array_merge($this->allowSchemes, $route->getSchemes());
+
+                continue;
+            }
+
+            return $this->getAttributes($route, $name, array_replace($matches, $hostMatches, isset($status[1]) ? $status[1] : array()));
+        }
+    }
+
+    /**
+     * Returns an array of values to use as request attributes.
+     *
+     * As this method requires the Route object, it is not available
+     * in matchers that do not have access to the matched Route instance
+     * (like the PHP and Apache matcher dumpers).
+     *
+     * @param Route  $route      The route we are matching against
+     * @param string $name       The name of the route
+     * @param array  $attributes An array of attributes from the matcher
+     *
+     * @return array An array of parameters
+     */
+    protected function getAttributes(Route $route, $name, array $attributes)
+    {
+        $defaults = $route->getDefaults();
+        if (isset($defaults['_canonical_route'])) {
+            $name = $defaults['_canonical_route'];
+            unset($defaults['_canonical_route']);
+        }
+        $attributes['_route'] = $name;
+
+        return $this->mergeDefaults($attributes, $defaults);
+    }
+
+    /**
+     * Handles specific route requirements.
+     *
+     * @param string $pathinfo The path
+     * @param string $name     The route name
+     * @param Route  $route    The route
+     *
+     * @return array The first element represents the status, the second contains additional information
+     */
+    protected function handleRouteRequirements($pathinfo, $name, Route $route)
+    {
+        // expression condition
+        if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), array('context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)))) {
+            return array(self::REQUIREMENT_MISMATCH, null);
+        }
+
+        return array(self::REQUIREMENT_MATCH, null);
+    }
+
+    /**
+     * Get merged default parameters.
+     *
+     * @param array $params   The parameters
+     * @param array $defaults The defaults
+     *
+     * @return array Merged default parameters
+     */
+    protected function mergeDefaults($params, $defaults)
+    {
+        foreach ($params as $key => $value) {
+            if (!\is_int($key) && null !== $value) {
+                $defaults[$key] = $value;
+            }
+        }
+
+        return $defaults;
+    }
+
+    protected function getExpressionLanguage()
+    {
+        if (null === $this->expressionLanguage) {
+            if (!class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
+                throw new \RuntimeException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
+            }
+            $this->expressionLanguage = new ExpressionLanguage(null, $this->expressionLanguageProviders);
+        }
+
+        return $this->expressionLanguage;
+    }
+
+    /**
+     * @internal
+     */
+    protected function createRequest($pathinfo)
+    {
+        if (!class_exists('Symfony\Component\HttpFoundation\Request')) {
+            return null;
+        }
+
+        return Request::create($this->context->getScheme().'://'.$this->context->getHost().$this->context->getBaseUrl().$pathinfo, $this->context->getMethod(), $this->context->getParameters(), array(), array(), array(
+            'SCRIPT_FILENAME' => $this->context->getBaseUrl(),
+            'SCRIPT_NAME' => $this->context->getBaseUrl(),
+        ));
+    }
+}

vendor/symfony/routing/Matcher/UrlMatcherInterface.php

@@ -0,0 +1,41 @@
+<?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;
+
+use Symfony\Component\Routing\Exception\MethodNotAllowedException;
+use Symfony\Component\Routing\Exception\NoConfigurationException;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
+use Symfony\Component\Routing\RequestContextAwareInterface;
+
+/**
+ * UrlMatcherInterface is the interface that all URL matcher classes must implement.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface UrlMatcherInterface extends RequestContextAwareInterface
+{
+    /**
+     * Tries to match a URL path with a set of routes.
+     *
+     * If the matcher can not find information, it must throw one of the exceptions documented
+     * below.
+     *
+     * @param string $pathinfo The path info to be parsed (raw format, i.e. not urldecoded)
+     *
+     * @return array An array of parameters
+     *
+     * @throws NoConfigurationException  If no routing configuration could be found
+     * @throws ResourceNotFoundException If the resource could not be found
+     * @throws MethodNotAllowedException If the resource was found but the request method is not allowed
+     */
+    public function match($pathinfo);
+}