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