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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\DependencyInjection\Dumper;
/**
* @author Nicolas Grekas <p@tchwork.com>
*
* @internal
*/
class Preloader
{
public static function preload(array $classes)
{
set_error_handler(function ($t, $m, $f, $l) {
if (error_reporting() & $t) {
if (__FILE__ !== $f) {
throw new \ErrorException($m, 0, $t, $f, $l);
}
throw new \ReflectionException($m);
}
});
$prev = [];
$preloaded = [];
try {
while ($prev !== $classes) {
$prev = $classes;
foreach ($classes as $c) {
if (!isset($preloaded[$c])) {
self::doPreload($c, $preloaded);
}
}
$classes = array_merge(get_declared_classes(), get_declared_interfaces(), get_declared_traits());
}
} finally {
restore_error_handler();
}
}
private static function doPreload(string $class, array &$preloaded)
{
if (isset($preloaded[$class]) || \in_array($class, ['self', 'static', 'parent'], true)) {
return;
}
$preloaded[$class] = true;
try {
$r = new \ReflectionClass($class);
if ($r->isInternal()) {
return;
}
$r->getConstants();
$r->getDefaultProperties();
if (\PHP_VERSION_ID >= 70400) {
foreach ($r->getProperties(\ReflectionProperty::IS_PUBLIC) as $p) {
if (($t = $p->getType()) && !$t->isBuiltin()) {
self::doPreload($t->getName(), $preloaded);
}
}
}
foreach ($r->getMethods(\ReflectionMethod::IS_PUBLIC) as $m) {
foreach ($m->getParameters() as $p) {
if ($p->isDefaultValueAvailable() && $p->isDefaultValueConstant()) {
$c = $p->getDefaultValueConstantName();
if ($i = strpos($c, '::')) {
self::doPreload(substr($c, 0, $i), $preloaded);
}
}
if (($t = $p->getType()) && !$t->isBuiltin()) {
self::doPreload($t->getName(), $preloaded);
}
}
if (($t = $m->getReturnType()) && !$t->isBuiltin()) {
self::doPreload($t->getName(), $preloaded);
}
}
} catch (\ReflectionException $e) {
// ignore missing classes
}
}
}
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