94 lines
2.7 KiB
PHP
94 lines
2.7 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\DependencyInjection\LazyProxy;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @internal
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*/
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class ProxyHelper
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{
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/**
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* @return string|null The FQCN or builtin name of the type hint, or null when the type hint references an invalid self|parent context
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*/
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public static function getTypeHint(\ReflectionFunctionAbstract $r, \ReflectionParameter $p = null, bool $noBuiltin = false): ?string
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{
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if ($p instanceof \ReflectionParameter) {
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$type = $p->getType();
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} else {
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$type = $r->getReturnType();
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}
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if (!$type) {
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return null;
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}
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return self::getTypeHintForType($type, $r, $noBuiltin);
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}
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private static function getTypeHintForType(\ReflectionType $type, \ReflectionFunctionAbstract $r, bool $noBuiltin): ?string
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{
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$types = [];
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$glue = '|';
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if ($type instanceof \ReflectionUnionType) {
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$reflectionTypes = $type->getTypes();
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} elseif ($type instanceof \ReflectionIntersectionType) {
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$reflectionTypes = $type->getTypes();
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$glue = '&';
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} elseif ($type instanceof \ReflectionNamedType) {
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$reflectionTypes = [$type];
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} else {
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return null;
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}
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foreach ($reflectionTypes as $type) {
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if ($type instanceof \ReflectionIntersectionType) {
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$typeHint = self::getTypeHintForType($type, $r, $noBuiltin);
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if (null === $typeHint) {
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return null;
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}
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$types[] = sprintf('(%s)', $typeHint);
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continue;
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}
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if ($type->isBuiltin()) {
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if (!$noBuiltin) {
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$types[] = $type->getName();
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}
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continue;
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}
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$lcName = strtolower($type->getName());
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$prefix = $noBuiltin ? '' : '\\';
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if ('self' !== $lcName && 'parent' !== $lcName) {
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$types[] = $prefix.$type->getName();
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continue;
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}
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if (!$r instanceof \ReflectionMethod) {
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continue;
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}
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if ('self' === $lcName) {
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$types[] = $prefix.$r->getDeclaringClass()->name;
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} else {
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$types[] = ($parent = $r->getDeclaringClass()->getParentClass()) ? $prefix.$parent->name : null;
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}
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}
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sort($types);
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return $types ? implode($glue, $types) : null;
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}
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}
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