<?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\DependencyInjection\LazyProxy;
/**
* @author Nicolas Grekas <p@tchwork.com>
*
* @internal
*/
class ProxyHelper
{
/**
* @return string|null The FQCN or builtin name of the type hint, or null when the type hint references an invalid self|parent context
*/
public static function getTypeHint(\ReflectionFunctionAbstract $r, \ReflectionParameter $p = null, $noBuiltin = false)
{
if ($p instanceof \ReflectionParameter) {
if (method_exists($p, 'getType')) {
$type = $p->getType();
} elseif (preg_match('/^(?:[^ ]++ ){4}([a-zA-Z_\x7F-\xFF][^ ]++)/', $p, $type)) {
$name = $type = $type[1];
if ('callable' === $name || 'array' === $name) {
return $noBuiltin ? null : $name;
}
}
} else {
$type = method_exists($r, 'getReturnType') ? $r->getReturnType() : null;
}
if (!$type) {
return null;
}
$types = [];
foreach ($type instanceof \ReflectionUnionType ? $type->getTypes() : [$type] as $type) {
$name = $type instanceof \ReflectionNamedType ? $type->getName() : (string) $type;
if (!\is_string($type) && $type->isBuiltin()) {
if (!$noBuiltin) {
$types[] = $name;
}
continue;
}
$lcName = strtolower($name);
$prefix = $noBuiltin ? '' : '\\';
if ('self' !== $lcName && 'parent' !== $lcName) {
$types[] = '' !== $prefix ? $prefix.$name : $name;
continue;
}
if (!$r instanceof \ReflectionMethod) {
continue;
}
if ('self' === $lcName) {
$types[] = $prefix.$r->getDeclaringClass()->name;
} else {
$types[] = ($parent = $r->getDeclaringClass()->getParentClass()) ? $prefix.$parent->name : null;
}
}
return $types ? implode('|', $types) : null;
}
}