vendor and env first commit
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<?php
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/**
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* This file is part of the Nette Framework (https://nette.org)
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* Copyright (c) 2004 David Grudl (https://davidgrudl.com)
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*/
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declare(strict_types=1);
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namespace Nette\Utils;
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use Nette;
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/**
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* PHP reflection helpers.
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*/
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final class Reflection
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{
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use Nette\StaticClass;
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/** @deprecated use Nette\Utils\Validator::isBuiltinType() */
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public static function isBuiltinType(string $type): bool
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{
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return Validators::isBuiltinType($type);
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}
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/** @deprecated use Nette\Utils\Validator::isClassKeyword() */
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public static function isClassKeyword(string $name): bool
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{
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return Validators::isClassKeyword($name);
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}
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/** @deprecated use native ReflectionParameter::getDefaultValue() */
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public static function getParameterDefaultValue(\ReflectionParameter $param): mixed
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{
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if ($param->isDefaultValueConstant()) {
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$const = $orig = $param->getDefaultValueConstantName();
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$pair = explode('::', $const);
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if (isset($pair[1])) {
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$pair[0] = Type::resolve($pair[0], $param);
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try {
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$rcc = new \ReflectionClassConstant($pair[0], $pair[1]);
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} catch (\ReflectionException $e) {
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$name = self::toString($param);
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throw new \ReflectionException("Unable to resolve constant $orig used as default value of $name.", 0, $e);
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}
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return $rcc->getValue();
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} elseif (!defined($const)) {
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$const = substr((string) strrchr($const, '\\'), 1);
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if (!defined($const)) {
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$name = self::toString($param);
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throw new \ReflectionException("Unable to resolve constant $orig used as default value of $name.");
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}
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}
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return constant($const);
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}
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return $param->getDefaultValue();
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}
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/**
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* Returns a reflection of a class or trait that contains a declaration of given property. Property can also be declared in the trait.
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*/
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public static function getPropertyDeclaringClass(\ReflectionProperty $prop): \ReflectionClass
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{
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foreach ($prop->getDeclaringClass()->getTraits() as $trait) {
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if ($trait->hasProperty($prop->name)
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// doc-comment guessing as workaround for insufficient PHP reflection
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&& $trait->getProperty($prop->name)->getDocComment() === $prop->getDocComment()
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) {
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return self::getPropertyDeclaringClass($trait->getProperty($prop->name));
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}
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}
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return $prop->getDeclaringClass();
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}
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/**
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* Returns a reflection of a method that contains a declaration of $method.
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* Usually, each method is its own declaration, but the body of the method can also be in the trait and under a different name.
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*/
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public static function getMethodDeclaringMethod(\ReflectionMethod $method): \ReflectionMethod
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{
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// file & line guessing as workaround for insufficient PHP reflection
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$decl = $method->getDeclaringClass();
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if ($decl->getFileName() === $method->getFileName()
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&& $decl->getStartLine() <= $method->getStartLine()
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&& $decl->getEndLine() >= $method->getEndLine()
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) {
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return $method;
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}
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$hash = [$method->getFileName(), $method->getStartLine(), $method->getEndLine()];
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if (($alias = $decl->getTraitAliases()[$method->name] ?? null)
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&& ($m = new \ReflectionMethod($alias))
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&& $hash === [$m->getFileName(), $m->getStartLine(), $m->getEndLine()]
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) {
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return self::getMethodDeclaringMethod($m);
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}
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foreach ($decl->getTraits() as $trait) {
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if ($trait->hasMethod($method->name)
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&& ($m = $trait->getMethod($method->name))
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&& $hash === [$m->getFileName(), $m->getStartLine(), $m->getEndLine()]
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) {
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return self::getMethodDeclaringMethod($m);
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}
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}
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return $method;
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}
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/**
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* Finds out if reflection has access to PHPdoc comments. Comments may not be available due to the opcode cache.
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*/
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public static function areCommentsAvailable(): bool
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{
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static $res;
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return $res ?? $res = (bool) (new \ReflectionMethod(__METHOD__))->getDocComment();
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}
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public static function toString(\Reflector $ref): string
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{
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if ($ref instanceof \ReflectionClass) {
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return $ref->name;
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} elseif ($ref instanceof \ReflectionMethod) {
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return $ref->getDeclaringClass()->name . '::' . $ref->name . '()';
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} elseif ($ref instanceof \ReflectionFunction) {
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return $ref->name . '()';
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} elseif ($ref instanceof \ReflectionProperty) {
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return self::getPropertyDeclaringClass($ref)->name . '::$' . $ref->name;
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} elseif ($ref instanceof \ReflectionParameter) {
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return '$' . $ref->name . ' in ' . self::toString($ref->getDeclaringFunction());
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} else {
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throw new Nette\InvalidArgumentException;
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}
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}
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/**
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* Expands the name of the class to full name in the given context of given class.
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* Thus, it returns how the PHP parser would understand $name if it were written in the body of the class $context.
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* @throws Nette\InvalidArgumentException
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*/
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public static function expandClassName(string $name, \ReflectionClass $context): string
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{
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$lower = strtolower($name);
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if (empty($name)) {
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throw new Nette\InvalidArgumentException('Class name must not be empty.');
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} elseif (Validators::isBuiltinType($lower)) {
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return $lower;
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} elseif ($lower === 'self' || $lower === 'static') {
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return $context->name;
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} elseif ($lower === 'parent') {
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return $context->getParentClass()
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? $context->getParentClass()->name
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: 'parent';
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} elseif ($name[0] === '\\') { // fully qualified name
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return ltrim($name, '\\');
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}
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$uses = self::getUseStatements($context);
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$parts = explode('\\', $name, 2);
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if (isset($uses[$parts[0]])) {
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$parts[0] = $uses[$parts[0]];
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return implode('\\', $parts);
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} elseif ($context->inNamespace()) {
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return $context->getNamespaceName() . '\\' . $name;
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} else {
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return $name;
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}
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}
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/** @return array<string, class-string> of [alias => class] */
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public static function getUseStatements(\ReflectionClass $class): array
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{
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if ($class->isAnonymous()) {
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throw new Nette\NotImplementedException('Anonymous classes are not supported.');
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}
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static $cache = [];
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if (!isset($cache[$name = $class->name])) {
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if ($class->isInternal()) {
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$cache[$name] = [];
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} else {
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$code = file_get_contents($class->getFileName());
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$cache = self::parseUseStatements($code, $name) + $cache;
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}
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}
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return $cache[$name];
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}
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/**
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* Parses PHP code to [class => [alias => class, ...]]
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*/
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private static function parseUseStatements(string $code, ?string $forClass = null): array
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{
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try {
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$tokens = \PhpToken::tokenize($code, TOKEN_PARSE);
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} catch (\ParseError $e) {
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trigger_error($e->getMessage(), E_USER_NOTICE);
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$tokens = [];
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}
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$namespace = $class = null;
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$classLevel = $level = 0;
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$res = $uses = [];
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$nameTokens = [T_STRING, T_NS_SEPARATOR, T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED];
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while ($token = current($tokens)) {
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next($tokens);
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switch ($token->id) {
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case T_NAMESPACE:
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$namespace = ltrim(self::fetch($tokens, $nameTokens) . '\\', '\\');
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$uses = [];
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break;
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case T_CLASS:
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case T_INTERFACE:
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case T_TRAIT:
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case PHP_VERSION_ID < 80100
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? T_CLASS
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: T_ENUM:
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if ($name = self::fetch($tokens, T_STRING)) {
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$class = $namespace . $name;
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$classLevel = $level + 1;
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$res[$class] = $uses;
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if ($class === $forClass) {
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return $res;
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}
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}
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break;
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case T_USE:
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while (!$class && ($name = self::fetch($tokens, $nameTokens))) {
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$name = ltrim($name, '\\');
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if (self::fetch($tokens, '{')) {
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while ($suffix = self::fetch($tokens, $nameTokens)) {
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if (self::fetch($tokens, T_AS)) {
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$uses[self::fetch($tokens, T_STRING)] = $name . $suffix;
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} else {
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$tmp = explode('\\', $suffix);
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$uses[end($tmp)] = $name . $suffix;
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}
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if (!self::fetch($tokens, ',')) {
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break;
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}
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}
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} elseif (self::fetch($tokens, T_AS)) {
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$uses[self::fetch($tokens, T_STRING)] = $name;
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} else {
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$tmp = explode('\\', $name);
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$uses[end($tmp)] = $name;
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}
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if (!self::fetch($tokens, ',')) {
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break;
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}
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}
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break;
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case T_CURLY_OPEN:
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case T_DOLLAR_OPEN_CURLY_BRACES:
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case ord('{'):
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$level++;
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break;
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case ord('}'):
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if ($level === $classLevel) {
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$class = $classLevel = 0;
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}
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$level--;
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}
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}
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return $res;
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}
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private static function fetch(array &$tokens, string|int|array $take): ?string
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{
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$res = null;
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while ($token = current($tokens)) {
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if ($token->is($take)) {
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$res .= $token->text;
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} elseif (!$token->is([T_DOC_COMMENT, T_WHITESPACE, T_COMMENT])) {
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break;
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}
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next($tokens);
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}
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return $res;
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}
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}
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