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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\VarDumper\Caster;
use Symfony\Component\VarDumper\Cloner\Stub;
/**
* Helper for filtering out properties in casters.
*
* @author Nicolas Grekas <p@tchwork.com>
*
* @final
*/
class Caster
{
public const EXCLUDE_VERBOSE = 1;
public const EXCLUDE_VIRTUAL = 2;
public const EXCLUDE_DYNAMIC = 4;
public const EXCLUDE_PUBLIC = 8;
public const EXCLUDE_PROTECTED = 16;
public const EXCLUDE_PRIVATE = 32;
public const EXCLUDE_NULL = 64;
public const EXCLUDE_EMPTY = 128;
public const EXCLUDE_NOT_IMPORTANT = 256;
public const EXCLUDE_STRICT = 512;
public const PREFIX_VIRTUAL = "\0~\0";
public const PREFIX_DYNAMIC = "\0+\0";
public const PREFIX_PROTECTED = "\0*\0";
/**
* Casts objects to arrays and adds the dynamic property prefix.
*
* @param bool $hasDebugInfo Whether the __debugInfo method exists on $obj or not
*/
public static function castObject(object $obj, string $class, bool $hasDebugInfo = false, string $debugClass = null): array
{
if ($hasDebugInfo) {
try {
$debugInfo = $obj->__debugInfo();
} catch (\Throwable $e) {
// ignore failing __debugInfo()
$hasDebugInfo = false;
}
}
$a = $obj instanceof \Closure ? [] : (array) $obj;
if ($obj instanceof \__PHP_Incomplete_Class) {
return $a;
}
if ($a) {
static $publicProperties = [];
$debugClass = $debugClass ?? get_debug_type($obj);
$i = 0;
$prefixedKeys = [];
foreach ($a as $k => $v) {
if ("\0" !== ($k[0] ?? '')) {
if (!isset($publicProperties[$class])) {
foreach ((new \ReflectionClass($class))->getProperties(\ReflectionProperty::IS_PUBLIC) as $prop) {
$publicProperties[$class][$prop->name] = true;
}
}
if (!isset($publicProperties[$class][$k])) {
$prefixedKeys[$i] = self::PREFIX_DYNAMIC.$k;
}
} elseif ($debugClass !== $class && 1 === strpos($k, $class)) {
$prefixedKeys[$i] = "\0".$debugClass.strrchr($k, "\0");
}
++$i;
}
if ($prefixedKeys) {
$keys = array_keys($a);
foreach ($prefixedKeys as $i => $k) {
$keys[$i] = $k;
}
$a = array_combine($keys, $a);
}
}
if ($hasDebugInfo && \is_array($debugInfo)) {
foreach ($debugInfo as $k => $v) {
if (!isset($k[0]) || "\0" !== $k[0]) {
if (\array_key_exists(self::PREFIX_DYNAMIC.$k, $a)) {
continue;
}
$k = self::PREFIX_VIRTUAL.$k;
}
unset($a[$k]);
$a[$k] = $v;
}
}
return $a;
}
/**
* Filters out the specified properties.
*
* By default, a single match in the $filter bit field filters properties out, following an "or" logic.
* When EXCLUDE_STRICT is set, an "and" logic is applied: all bits must match for a property to be removed.
*
* @param array $a The array containing the properties to filter
* @param int $filter A bit field of Caster::EXCLUDE_* constants specifying which properties to filter out
* @param string[] $listedProperties List of properties to exclude when Caster::EXCLUDE_VERBOSE is set, and to preserve when Caster::EXCLUDE_NOT_IMPORTANT is set
* @param int &$count Set to the number of removed properties
*/
public static function filter(array $a, int $filter, array $listedProperties = [], ?int &$count = 0): array
{
$count = 0;
foreach ($a as $k => $v) {
$type = self::EXCLUDE_STRICT & $filter;
if (null === $v) {
$type |= self::EXCLUDE_NULL & $filter;
$type |= self::EXCLUDE_EMPTY & $filter;
} elseif (false === $v || '' === $v || '0' === $v || 0 === $v || 0.0 === $v || [] === $v) {
$type |= self::EXCLUDE_EMPTY & $filter;
}
if ((self::EXCLUDE_NOT_IMPORTANT & $filter) && !\in_array($k, $listedProperties, true)) {
$type |= self::EXCLUDE_NOT_IMPORTANT;
}
if ((self::EXCLUDE_VERBOSE & $filter) && \in_array($k, $listedProperties, true)) {
$type |= self::EXCLUDE_VERBOSE;
}
if (!isset($k[1]) || "\0" !== $k[0]) {
$type |= self::EXCLUDE_PUBLIC & $filter;
} elseif ('~' === $k[1]) {
$type |= self::EXCLUDE_VIRTUAL & $filter;
} elseif ('+' === $k[1]) {
$type |= self::EXCLUDE_DYNAMIC & $filter;
} elseif ('*' === $k[1]) {
$type |= self::EXCLUDE_PROTECTED & $filter;
} else {
$type |= self::EXCLUDE_PRIVATE & $filter;
}
if ((self::EXCLUDE_STRICT & $filter) ? $type === $filter : $type) {
unset($a[$k]);
++$count;
}
}
return $a;
}
public static function castPhpIncompleteClass(\__PHP_Incomplete_Class $c, array $a, Stub $stub, bool $isNested): array
{
if (isset($a['__PHP_Incomplete_Class_Name'])) {
$stub->class .= '('.$a['__PHP_Incomplete_Class_Name'].')';
unset($a['__PHP_Incomplete_Class_Name']);
}
return $a;
}
}
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