418 lines
16 KiB
PHP
418 lines
16 KiB
PHP
<?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\VarExporter\Internal;
|
|
|
|
use Symfony\Component\VarExporter\Exception\NotInstantiableTypeException;
|
|
|
|
/**
|
|
* @author Nicolas Grekas <p@tchwork.com>
|
|
*
|
|
* @internal
|
|
*/
|
|
class Exporter
|
|
{
|
|
/**
|
|
* Prepares an array of values for VarExporter.
|
|
*
|
|
* For performance this method is public and has no type-hints.
|
|
*
|
|
* @param array &$values
|
|
* @param \SplObjectStorage $objectsPool
|
|
* @param array &$refsPool
|
|
* @param int &$objectsCount
|
|
* @param bool &$valuesAreStatic
|
|
*
|
|
* @throws NotInstantiableTypeException When a value cannot be serialized
|
|
*/
|
|
public static function prepare($values, $objectsPool, &$refsPool, &$objectsCount, &$valuesAreStatic): array
|
|
{
|
|
$refs = $values;
|
|
foreach ($values as $k => $value) {
|
|
if (\is_resource($value)) {
|
|
throw new NotInstantiableTypeException(get_resource_type($value).' resource');
|
|
}
|
|
$refs[$k] = $objectsPool;
|
|
|
|
if ($isRef = !$valueIsStatic = $values[$k] !== $objectsPool) {
|
|
$values[$k] = &$value; // Break hard references to make $values completely
|
|
unset($value); // independent from the original structure
|
|
$refs[$k] = $value = $values[$k];
|
|
if ($value instanceof Reference && 0 > $value->id) {
|
|
$valuesAreStatic = false;
|
|
++$value->count;
|
|
continue;
|
|
}
|
|
$refsPool[] = [&$refs[$k], $value, &$value];
|
|
$refs[$k] = $values[$k] = new Reference(-\count($refsPool), $value);
|
|
}
|
|
|
|
if (\is_array($value)) {
|
|
if ($value) {
|
|
$value = self::prepare($value, $objectsPool, $refsPool, $objectsCount, $valueIsStatic);
|
|
}
|
|
goto handle_value;
|
|
} elseif (!\is_object($value) || $value instanceof \UnitEnum) {
|
|
goto handle_value;
|
|
}
|
|
|
|
$valueIsStatic = false;
|
|
if (isset($objectsPool[$value])) {
|
|
++$objectsCount;
|
|
$value = new Reference($objectsPool[$value][0]);
|
|
goto handle_value;
|
|
}
|
|
|
|
$class = \get_class($value);
|
|
$reflector = Registry::$reflectors[$class] ?? Registry::getClassReflector($class);
|
|
$properties = [];
|
|
|
|
if ($reflector->hasMethod('__serialize')) {
|
|
if (!$reflector->getMethod('__serialize')->isPublic()) {
|
|
throw new \Error(sprintf('Call to %s method "%s::__serialize()".', $reflector->getMethod('__serialize')->isProtected() ? 'protected' : 'private', $class));
|
|
}
|
|
|
|
if (!\is_array($serializeProperties = $value->__serialize())) {
|
|
throw new \TypeError($class.'::__serialize() must return an array');
|
|
}
|
|
|
|
if ($reflector->hasMethod('__unserialize')) {
|
|
$properties = $serializeProperties;
|
|
} else {
|
|
foreach ($serializeProperties as $n => $v) {
|
|
$c = \PHP_VERSION_ID >= 80100 && $reflector->hasProperty($n) && ($p = $reflector->getProperty($n))->isReadOnly() ? $p->class : 'stdClass';
|
|
$properties[$c][$n] = $v;
|
|
}
|
|
}
|
|
|
|
goto prepare_value;
|
|
}
|
|
|
|
$sleep = null;
|
|
$proto = Registry::$prototypes[$class];
|
|
|
|
if (($value instanceof \ArrayIterator || $value instanceof \ArrayObject) && null !== $proto) {
|
|
// ArrayIterator and ArrayObject need special care because their "flags"
|
|
// option changes the behavior of the (array) casting operator.
|
|
[$arrayValue, $properties] = self::getArrayObjectProperties($value, $proto);
|
|
|
|
// populates Registry::$prototypes[$class] with a new instance
|
|
Registry::getClassReflector($class, Registry::$instantiableWithoutConstructor[$class], Registry::$cloneable[$class]);
|
|
} elseif ($value instanceof \SplObjectStorage && Registry::$cloneable[$class] && null !== $proto) {
|
|
// By implementing Serializable, SplObjectStorage breaks
|
|
// internal references; let's deal with it on our own.
|
|
foreach (clone $value as $v) {
|
|
$properties[] = $v;
|
|
$properties[] = $value[$v];
|
|
}
|
|
$properties = ['SplObjectStorage' => ["\0" => $properties]];
|
|
$arrayValue = (array) $value;
|
|
} elseif ($value instanceof \Serializable
|
|
|| $value instanceof \__PHP_Incomplete_Class
|
|
|| \PHP_VERSION_ID < 80200 && $value instanceof \DatePeriod
|
|
) {
|
|
++$objectsCount;
|
|
$objectsPool[$value] = [$id = \count($objectsPool), serialize($value), [], 0];
|
|
$value = new Reference($id);
|
|
goto handle_value;
|
|
} else {
|
|
if (method_exists($class, '__sleep')) {
|
|
if (!\is_array($sleep = $value->__sleep())) {
|
|
trigger_error('serialize(): __sleep should return an array only containing the names of instance-variables to serialize', \E_USER_NOTICE);
|
|
$value = null;
|
|
goto handle_value;
|
|
}
|
|
$sleep = array_flip($sleep);
|
|
}
|
|
|
|
$arrayValue = (array) $value;
|
|
}
|
|
|
|
$proto = (array) $proto;
|
|
|
|
foreach ($arrayValue as $name => $v) {
|
|
$i = 0;
|
|
$n = (string) $name;
|
|
if ('' === $n || "\0" !== $n[0]) {
|
|
$c = \PHP_VERSION_ID >= 80100 && $reflector->hasProperty($n) && ($p = $reflector->getProperty($n))->isReadOnly() ? $p->class : 'stdClass';
|
|
} elseif ('*' === $n[1]) {
|
|
$n = substr($n, 3);
|
|
$c = $reflector->getProperty($n)->class;
|
|
if ('Error' === $c) {
|
|
$c = 'TypeError';
|
|
} elseif ('Exception' === $c) {
|
|
$c = 'ErrorException';
|
|
}
|
|
} else {
|
|
$i = strpos($n, "\0", 2);
|
|
$c = substr($n, 1, $i - 1);
|
|
$n = substr($n, 1 + $i);
|
|
}
|
|
if (null !== $sleep) {
|
|
if (!isset($sleep[$name]) && (!isset($sleep[$n]) || ($i && $c !== $class))) {
|
|
unset($arrayValue[$name]);
|
|
continue;
|
|
}
|
|
unset($sleep[$name], $sleep[$n]);
|
|
}
|
|
if (!\array_key_exists($name, $proto) || $proto[$name] !== $v || "\x00Error\x00trace" === $name || "\x00Exception\x00trace" === $name) {
|
|
$properties[$c][$n] = $v;
|
|
}
|
|
}
|
|
if ($sleep) {
|
|
foreach ($sleep as $n => $v) {
|
|
trigger_error(sprintf('serialize(): "%s" returned as member variable from __sleep() but does not exist', $n), \E_USER_NOTICE);
|
|
}
|
|
}
|
|
if (method_exists($class, '__unserialize')) {
|
|
$properties = $arrayValue;
|
|
}
|
|
|
|
prepare_value:
|
|
$objectsPool[$value] = [$id = \count($objectsPool)];
|
|
$properties = self::prepare($properties, $objectsPool, $refsPool, $objectsCount, $valueIsStatic);
|
|
++$objectsCount;
|
|
$objectsPool[$value] = [$id, $class, $properties, method_exists($class, '__unserialize') ? -$objectsCount : (method_exists($class, '__wakeup') ? $objectsCount : 0)];
|
|
|
|
$value = new Reference($id);
|
|
|
|
handle_value:
|
|
if ($isRef) {
|
|
unset($value); // Break the hard reference created above
|
|
} elseif (!$valueIsStatic) {
|
|
$values[$k] = $value;
|
|
}
|
|
$valuesAreStatic = $valueIsStatic && $valuesAreStatic;
|
|
}
|
|
|
|
return $values;
|
|
}
|
|
|
|
public static function export($value, string $indent = '')
|
|
{
|
|
switch (true) {
|
|
case \is_int($value) || \is_float($value): return var_export($value, true);
|
|
case [] === $value: return '[]';
|
|
case false === $value: return 'false';
|
|
case true === $value: return 'true';
|
|
case null === $value: return 'null';
|
|
case '' === $value: return "''";
|
|
case $value instanceof \UnitEnum: return '\\'.ltrim(var_export($value, true), '\\');
|
|
}
|
|
|
|
if ($value instanceof Reference) {
|
|
if (0 <= $value->id) {
|
|
return '$o['.$value->id.']';
|
|
}
|
|
if (!$value->count) {
|
|
return self::export($value->value, $indent);
|
|
}
|
|
$value = -$value->id;
|
|
|
|
return '&$r['.$value.']';
|
|
}
|
|
$subIndent = $indent.' ';
|
|
|
|
if (\is_string($value)) {
|
|
$code = sprintf("'%s'", addcslashes($value, "'\\"));
|
|
|
|
$code = preg_replace_callback("/((?:[\\0\\r\\n]|\u{202A}|\u{202B}|\u{202D}|\u{202E}|\u{2066}|\u{2067}|\u{2068}|\u{202C}|\u{2069})++)(.)/", function ($m) use ($subIndent) {
|
|
$m[1] = sprintf('\'."%s".\'', str_replace(
|
|
["\0", "\r", "\n", "\u{202A}", "\u{202B}", "\u{202D}", "\u{202E}", "\u{2066}", "\u{2067}", "\u{2068}", "\u{202C}", "\u{2069}", '\n\\'],
|
|
['\0', '\r', '\n', '\u{202A}', '\u{202B}', '\u{202D}', '\u{202E}', '\u{2066}', '\u{2067}', '\u{2068}', '\u{202C}', '\u{2069}', '\n"'."\n".$subIndent.'."\\'],
|
|
$m[1]
|
|
));
|
|
|
|
if ("'" === $m[2]) {
|
|
return substr($m[1], 0, -2);
|
|
}
|
|
|
|
if ('n".\'' === substr($m[1], -4)) {
|
|
return substr_replace($m[1], "\n".$subIndent.".'".$m[2], -2);
|
|
}
|
|
|
|
return $m[1].$m[2];
|
|
}, $code, -1, $count);
|
|
|
|
if ($count && str_starts_with($code, "''.")) {
|
|
$code = substr($code, 3);
|
|
}
|
|
|
|
return $code;
|
|
}
|
|
|
|
if (\is_array($value)) {
|
|
$j = -1;
|
|
$code = '';
|
|
foreach ($value as $k => $v) {
|
|
$code .= $subIndent;
|
|
if (!\is_int($k) || 1 !== $k - $j) {
|
|
$code .= self::export($k, $subIndent).' => ';
|
|
}
|
|
if (\is_int($k) && $k > $j) {
|
|
$j = $k;
|
|
}
|
|
$code .= self::export($v, $subIndent).",\n";
|
|
}
|
|
|
|
return "[\n".$code.$indent.']';
|
|
}
|
|
|
|
if ($value instanceof Values) {
|
|
$code = $subIndent."\$r = [],\n";
|
|
foreach ($value->values as $k => $v) {
|
|
$code .= $subIndent.'$r['.$k.'] = '.self::export($v, $subIndent).",\n";
|
|
}
|
|
|
|
return "[\n".$code.$indent.']';
|
|
}
|
|
|
|
if ($value instanceof Registry) {
|
|
return self::exportRegistry($value, $indent, $subIndent);
|
|
}
|
|
|
|
if ($value instanceof Hydrator) {
|
|
return self::exportHydrator($value, $indent, $subIndent);
|
|
}
|
|
|
|
throw new \UnexpectedValueException(sprintf('Cannot export value of type "%s".', get_debug_type($value)));
|
|
}
|
|
|
|
private static function exportRegistry(Registry $value, string $indent, string $subIndent): string
|
|
{
|
|
$code = '';
|
|
$serializables = [];
|
|
$seen = [];
|
|
$prototypesAccess = 0;
|
|
$factoriesAccess = 0;
|
|
$r = '\\'.Registry::class;
|
|
$j = -1;
|
|
|
|
foreach ($value->classes as $k => $class) {
|
|
if (':' === ($class[1] ?? null)) {
|
|
$serializables[$k] = $class;
|
|
continue;
|
|
}
|
|
if (!Registry::$instantiableWithoutConstructor[$class]) {
|
|
if (is_subclass_of($class, 'Serializable') && !method_exists($class, '__unserialize')) {
|
|
$serializables[$k] = 'C:'.\strlen($class).':"'.$class.'":0:{}';
|
|
} else {
|
|
$serializables[$k] = 'O:'.\strlen($class).':"'.$class.'":0:{}';
|
|
}
|
|
if (is_subclass_of($class, 'Throwable')) {
|
|
$eol = is_subclass_of($class, 'Error') ? "\0Error\0" : "\0Exception\0";
|
|
$serializables[$k] = substr_replace($serializables[$k], '1:{s:'.(5 + \strlen($eol)).':"'.$eol.'trace";a:0:{}}', -4);
|
|
}
|
|
continue;
|
|
}
|
|
$code .= $subIndent.(1 !== $k - $j ? $k.' => ' : '');
|
|
$j = $k;
|
|
$eol = ",\n";
|
|
$c = '['.self::export($class).']';
|
|
|
|
if ($seen[$class] ?? false) {
|
|
if (Registry::$cloneable[$class]) {
|
|
++$prototypesAccess;
|
|
$code .= 'clone $p'.$c;
|
|
} else {
|
|
++$factoriesAccess;
|
|
$code .= '$f'.$c.'()';
|
|
}
|
|
} else {
|
|
$seen[$class] = true;
|
|
if (Registry::$cloneable[$class]) {
|
|
$code .= 'clone ('.($prototypesAccess++ ? '$p' : '($p = &'.$r.'::$prototypes)').$c.' ?? '.$r.'::p';
|
|
} else {
|
|
$code .= '('.($factoriesAccess++ ? '$f' : '($f = &'.$r.'::$factories)').$c.' ?? '.$r.'::f';
|
|
$eol = '()'.$eol;
|
|
}
|
|
$code .= '('.substr($c, 1, -1).'))';
|
|
}
|
|
$code .= $eol;
|
|
}
|
|
|
|
if (1 === $prototypesAccess) {
|
|
$code = str_replace('($p = &'.$r.'::$prototypes)', $r.'::$prototypes', $code);
|
|
}
|
|
if (1 === $factoriesAccess) {
|
|
$code = str_replace('($f = &'.$r.'::$factories)', $r.'::$factories', $code);
|
|
}
|
|
if ('' !== $code) {
|
|
$code = "\n".$code.$indent;
|
|
}
|
|
|
|
if ($serializables) {
|
|
$code = $r.'::unserialize(['.$code.'], '.self::export($serializables, $indent).')';
|
|
} else {
|
|
$code = '['.$code.']';
|
|
}
|
|
|
|
return '$o = '.$code;
|
|
}
|
|
|
|
private static function exportHydrator(Hydrator $value, string $indent, string $subIndent): string
|
|
{
|
|
$code = '';
|
|
foreach ($value->properties as $class => $properties) {
|
|
$code .= $subIndent.' '.self::export($class).' => '.self::export($properties, $subIndent.' ').",\n";
|
|
}
|
|
|
|
$code = [
|
|
self::export($value->registry, $subIndent),
|
|
self::export($value->values, $subIndent),
|
|
'' !== $code ? "[\n".$code.$subIndent.']' : '[]',
|
|
self::export($value->value, $subIndent),
|
|
self::export($value->wakeups, $subIndent),
|
|
];
|
|
|
|
return '\\'.\get_class($value)."::hydrate(\n".$subIndent.implode(",\n".$subIndent, $code)."\n".$indent.')';
|
|
}
|
|
|
|
/**
|
|
* @param \ArrayIterator|\ArrayObject $value
|
|
* @param \ArrayIterator|\ArrayObject $proto
|
|
*/
|
|
private static function getArrayObjectProperties($value, $proto): array
|
|
{
|
|
$reflector = $value instanceof \ArrayIterator ? 'ArrayIterator' : 'ArrayObject';
|
|
$reflector = Registry::$reflectors[$reflector] ?? Registry::getClassReflector($reflector);
|
|
|
|
$properties = [
|
|
$arrayValue = (array) $value,
|
|
$reflector->getMethod('getFlags')->invoke($value),
|
|
$value instanceof \ArrayObject ? $reflector->getMethod('getIteratorClass')->invoke($value) : 'ArrayIterator',
|
|
];
|
|
|
|
$reflector = $reflector->getMethod('setFlags');
|
|
$reflector->invoke($proto, \ArrayObject::STD_PROP_LIST);
|
|
|
|
if ($properties[1] & \ArrayObject::STD_PROP_LIST) {
|
|
$reflector->invoke($value, 0);
|
|
$properties[0] = (array) $value;
|
|
} else {
|
|
$reflector->invoke($value, \ArrayObject::STD_PROP_LIST);
|
|
$arrayValue = (array) $value;
|
|
}
|
|
$reflector->invoke($value, $properties[1]);
|
|
|
|
if ([[], 0, 'ArrayIterator'] === $properties) {
|
|
$properties = [];
|
|
} else {
|
|
if ('ArrayIterator' === $properties[2]) {
|
|
unset($properties[2]);
|
|
}
|
|
$properties = [$reflector->class => ["\0" => $properties]];
|
|
}
|
|
|
|
return [$arrayValue, $properties];
|
|
}
|
|
}
|