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vendor/symfony/error-handler/ErrorEnhancer/ClassNotFoundErrorEnhancer.php

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+<?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\ErrorHandler\ErrorEnhancer;
+
+use Composer\Autoload\ClassLoader;
+use Symfony\Component\ErrorHandler\DebugClassLoader;
+use Symfony\Component\ErrorHandler\Error\ClassNotFoundError;
+use Symfony\Component\ErrorHandler\Error\FatalError;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ClassNotFoundErrorEnhancer implements ErrorEnhancerInterface
+{
+    public function enhance(\Throwable $error): ?\Throwable
+    {
+        // Some specific versions of PHP produce a fatal error when extending a not found class.
+        $message = !$error instanceof FatalError ? $error->getMessage() : $error->getError()['message'];
+        if (!preg_match('/^(Class|Interface|Trait) [\'"]([^\'"]+)[\'"] not found$/', $message, $matches)) {
+            return null;
+        }
+        $typeName = strtolower($matches[1]);
+        $fullyQualifiedClassName = $matches[2];
+
+        if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedClassName, '\\')) {
+            $className = substr($fullyQualifiedClassName, $namespaceSeparatorIndex + 1);
+            $namespacePrefix = substr($fullyQualifiedClassName, 0, $namespaceSeparatorIndex);
+            $message = sprintf('Attempted to load %s "%s" from namespace "%s".', $typeName, $className, $namespacePrefix);
+            $tail = ' for another namespace?';
+        } else {
+            $className = $fullyQualifiedClassName;
+            $message = sprintf('Attempted to load %s "%s" from the global namespace.', $typeName, $className);
+            $tail = '?';
+        }
+
+        if ($candidates = $this->getClassCandidates($className)) {
+            $tail = array_pop($candidates).'"?';
+            if ($candidates) {
+                $tail = ' for e.g. "'.implode('", "', $candidates).'" or "'.$tail;
+            } else {
+                $tail = ' for "'.$tail;
+            }
+        }
+        $message .= "\nDid you forget a \"use\" statement".$tail;
+
+        return new ClassNotFoundError($message, $error);
+    }
+
+    /**
+     * Tries to guess the full namespace for a given class name.
+     *
+     * By default, it looks for PSR-0 and PSR-4 classes registered via a Symfony or a Composer
+     * autoloader (that should cover all common cases).
+     *
+     * @param string $class A class name (without its namespace)
+     *
+     * Returns an array of possible fully qualified class names
+     */
+    private function getClassCandidates(string $class): array
+    {
+        if (!\is_array($functions = spl_autoload_functions())) {
+            return [];
+        }
+
+        // find Symfony and Composer autoloaders
+        $classes = [];
+
+        foreach ($functions as $function) {
+            if (!\is_array($function)) {
+                continue;
+            }
+            // get class loaders wrapped by DebugClassLoader
+            if ($function[0] instanceof DebugClassLoader) {
+                $function = $function[0]->getClassLoader();
+
+                if (!\is_array($function)) {
+                    continue;
+                }
+            }
+
+            if ($function[0] instanceof ClassLoader) {
+                foreach ($function[0]->getPrefixes() as $prefix => $paths) {
+                    foreach ($paths as $path) {
+                        $classes[] = $this->findClassInPath($path, $class, $prefix);
+                    }
+                }
+
+                foreach ($function[0]->getPrefixesPsr4() as $prefix => $paths) {
+                    foreach ($paths as $path) {
+                        $classes[] = $this->findClassInPath($path, $class, $prefix);
+                    }
+                }
+            }
+        }
+
+        return array_unique(array_merge([], ...$classes));
+    }
+
+    private function findClassInPath(string $path, string $class, string $prefix): array
+    {
+        $path = realpath($path.'/'.strtr($prefix, '\\_', '//')) ?: realpath($path.'/'.\dirname(strtr($prefix, '\\_', '//'))) ?: realpath($path);
+        if (!$path || !is_dir($path)) {
+            return [];
+        }
+
+        $classes = [];
+        $filename = $class.'.php';
+        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
+            if ($filename == $file->getFileName() && $class = $this->convertFileToClass($path, $file->getPathName(), $prefix)) {
+                $classes[] = $class;
+            }
+        }
+
+        return $classes;
+    }
+
+    private function convertFileToClass(string $path, string $file, string $prefix): ?string
+    {
+        $candidates = [
+            // namespaced class
+            $namespacedClass = str_replace([$path.\DIRECTORY_SEPARATOR, '.php', '/'], ['', '', '\\'], $file),
+            // namespaced class (with target dir)
+            $prefix.$namespacedClass,
+            // namespaced class (with target dir and separator)
+            $prefix.'\\'.$namespacedClass,
+            // PEAR class
+            str_replace('\\', '_', $namespacedClass),
+            // PEAR class (with target dir)
+            str_replace('\\', '_', $prefix.$namespacedClass),
+            // PEAR class (with target dir and separator)
+            str_replace('\\', '_', $prefix.'\\'.$namespacedClass),
+        ];
+
+        if ($prefix) {
+            $candidates = array_filter($candidates, function ($candidate) use ($prefix) { return 0 === strpos($candidate, $prefix); });
+        }
+
+        // We cannot use the autoloader here as most of them use require; but if the class
+        // is not found, the new autoloader call will require the file again leading to a
+        // "cannot redeclare class" error.
+        foreach ($candidates as $candidate) {
+            if ($this->classExists($candidate)) {
+                return $candidate;
+            }
+        }
+
+        try {
+            require_once $file;
+        } catch (\Throwable $e) {
+            return null;
+        }
+
+        foreach ($candidates as $candidate) {
+            if ($this->classExists($candidate)) {
+                return $candidate;
+            }
+        }
+
+        return null;
+    }
+
+    private function classExists(string $class): bool
+    {
+        return class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false);
+    }
+}

vendor/symfony/error-handler/ErrorEnhancer/ErrorEnhancerInterface.php

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+<?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\ErrorHandler\ErrorEnhancer;
+
+interface ErrorEnhancerInterface
+{
+    /**
+     * Returns an \Throwable instance if the class is able to improve the error, null otherwise.
+     */
+    public function enhance(\Throwable $error): ?\Throwable;
+}

vendor/symfony/error-handler/ErrorEnhancer/UndefinedFunctionErrorEnhancer.php

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+<?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\ErrorHandler\ErrorEnhancer;
+
+use Symfony\Component\ErrorHandler\Error\FatalError;
+use Symfony\Component\ErrorHandler\Error\UndefinedFunctionError;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class UndefinedFunctionErrorEnhancer implements ErrorEnhancerInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function enhance(\Throwable $error): ?\Throwable
+    {
+        if ($error instanceof FatalError) {
+            return null;
+        }
+
+        $message = $error->getMessage();
+        $messageLen = \strlen($message);
+        $notFoundSuffix = '()';
+        $notFoundSuffixLen = \strlen($notFoundSuffix);
+        if ($notFoundSuffixLen > $messageLen) {
+            return null;
+        }
+
+        if (0 !== substr_compare($message, $notFoundSuffix, -$notFoundSuffixLen)) {
+            return null;
+        }
+
+        $prefix = 'Call to undefined function ';
+        $prefixLen = \strlen($prefix);
+        if (0 !== strpos($message, $prefix)) {
+            return null;
+        }
+
+        $fullyQualifiedFunctionName = substr($message, $prefixLen, -$notFoundSuffixLen);
+        if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedFunctionName, '\\')) {
+            $functionName = substr($fullyQualifiedFunctionName, $namespaceSeparatorIndex + 1);
+            $namespacePrefix = substr($fullyQualifiedFunctionName, 0, $namespaceSeparatorIndex);
+            $message = sprintf('Attempted to call function "%s" from namespace "%s".', $functionName, $namespacePrefix);
+        } else {
+            $functionName = $fullyQualifiedFunctionName;
+            $message = sprintf('Attempted to call function "%s" from the global namespace.', $functionName);
+        }
+
+        $candidates = [];
+        foreach (get_defined_functions() as $type => $definedFunctionNames) {
+            foreach ($definedFunctionNames as $definedFunctionName) {
+                if (false !== $namespaceSeparatorIndex = strrpos($definedFunctionName, '\\')) {
+                    $definedFunctionNameBasename = substr($definedFunctionName, $namespaceSeparatorIndex + 1);
+                } else {
+                    $definedFunctionNameBasename = $definedFunctionName;
+                }
+
+                if ($definedFunctionNameBasename === $functionName) {
+                    $candidates[] = '\\'.$definedFunctionName;
+                }
+            }
+        }
+
+        if ($candidates) {
+            sort($candidates);
+            $last = array_pop($candidates).'"?';
+            if ($candidates) {
+                $candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
+            } else {
+                $candidates = '"'.$last;
+            }
+            $message .= "\nDid you mean to call ".$candidates;
+        }
+
+        return new UndefinedFunctionError($message, $error);
+    }
+}

vendor/symfony/error-handler/ErrorEnhancer/UndefinedMethodErrorEnhancer.php

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+<?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\ErrorHandler\ErrorEnhancer;
+
+use Symfony\Component\ErrorHandler\Error\FatalError;
+use Symfony\Component\ErrorHandler\Error\UndefinedMethodError;
+
+/**
+ * @author Grégoire Pineau <lyrixx@lyrixx.info>
+ */
+class UndefinedMethodErrorEnhancer implements ErrorEnhancerInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function enhance(\Throwable $error): ?\Throwable
+    {
+        if ($error instanceof FatalError) {
+            return null;
+        }
+
+        $message = $error->getMessage();
+        preg_match('/^Call to undefined method (.*)::(.*)\(\)$/', $message, $matches);
+        if (!$matches) {
+            return null;
+        }
+
+        $className = $matches[1];
+        $methodName = $matches[2];
+
+        $message = sprintf('Attempted to call an undefined method named "%s" of class "%s".', $methodName, $className);
+
+        if ('' === $methodName || !class_exists($className) || null === $methods = get_class_methods($className)) {
+            // failed to get the class or its methods on which an unknown method was called (for example on an anonymous class)
+            return new UndefinedMethodError($message, $error);
+        }
+
+        $candidates = [];
+        foreach ($methods as $definedMethodName) {
+            $lev = levenshtein($methodName, $definedMethodName);
+            if ($lev <= \strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
+                $candidates[] = $definedMethodName;
+            }
+        }
+
+        if ($candidates) {
+            sort($candidates);
+            $last = array_pop($candidates).'"?';
+            if ($candidates) {
+                $candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
+            } else {
+                $candidates = '"'.$last;
+            }
+
+            $message .= "\nDid you mean to call ".$candidates;
+        }
+
+        return new UndefinedMethodError($message, $error);
+    }
+}