<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* 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;
/**
* Casts Reflector related classes to array representation.
*
* @author Nicolas Grekas <[email protected]>
*
* @final since Symfony 4.4
*/
class ReflectionCaster
{
const UNSET_CLOSURE_FILE_INFO = ['Closure' => __CLASS__.'::unsetClosureFileInfo'];
private static $extraMap = [
'docComment' => 'getDocComment',
'extension' => 'getExtensionName',
'isDisabled' => 'isDisabled',
'isDeprecated' => 'isDeprecated',
'isInternal' => 'isInternal',
'isUserDefined' => 'isUserDefined',
'isGenerator' => 'isGenerator',
'isVariadic' => 'isVariadic',
];
public static function castClosure(\Closure $c, array $a, Stub $stub, $isNested, $filter = 0)
{
$prefix = Caster::PREFIX_VIRTUAL;
$c = new \ReflectionFunction($c);
$a = static::castFunctionAbstract($c, $a, $stub, $isNested, $filter);
if (false === strpos($c->name, '{closure}')) {
$stub->class = isset($a[$prefix.'class']) ? $a[$prefix.'class']->value.'::'.$c->name : $c->name;
unset($a[$prefix.'class']);
}
unset($a[$prefix.'extra']);
$stub->class .= self::getSignature($a);
if ($f = $c->getFileName()) {
$stub->attr['file'] = $f;
$stub->attr['line'] = $c->getStartLine();
}
unset($a[$prefix.'parameters']);
if ($filter & Caster::EXCLUDE_VERBOSE) {
$stub->cut += ($c->getFileName() ? 2 : 0) + \count($a);
return [];
}
if ($f) {
$a[$prefix.'file'] = new LinkStub($f, $c->getStartLine());
$a[$prefix.'line'] = $c->getStartLine().' to '.$c->getEndLine();
}
return $a;
}
public static function unsetClosureFileInfo(\Closure $c, array $a)
{
unset($a[Caster::PREFIX_VIRTUAL.'file'], $a[Caster::PREFIX_VIRTUAL.'line']);
return $a;
}
public static function castGenerator(\Generator $c, array $a, Stub $stub, $isNested)
{
// Cannot create ReflectionGenerator based on a terminated Generator
try {
$reflectionGenerator = new \ReflectionGenerator($c);
} catch (\Exception $e) {
$a[Caster::PREFIX_VIRTUAL.'closed'] = true;
return $a;
}
return self::castReflectionGenerator($reflectionGenerator, $a, $stub, $isNested);
}
public static function castType(\ReflectionType $c, array $a, Stub $stub, $isNested)
{
$prefix = Caster::PREFIX_VIRTUAL;
$a += [
$prefix.'name' => $c->getName(),
$prefix.'allowsNull' => $c->allowsNull(),
$prefix.'isBuiltin' => $c->isBuiltin(),
];
return $a;
}
public static function castReflectionGenerator(\ReflectionGenerator $c, array $a, Stub $stub, $isNested)
{
$prefix = Caster::PREFIX_VIRTUAL;
if ($c->getThis()) {
$a[$prefix.'this'] = new CutStub($c->getThis());
}
$function = $c->getFunction();
$frame = [
'class' => isset($function->class) ? $function->class : null,
'type' => isset($function->class) ? ($function->isStatic() ? '::' : '->') : null,
'function' => $function->name,
'file' => $c->getExecutingFile(),
'line' => $c->getExecutingLine(),
];
if ($trace = $c->getTrace(DEBUG_BACKTRACE_IGNORE_ARGS)) {
$function = new \ReflectionGenerator($c->getExecutingGenerator());
array_unshift($trace, [
'function' => 'yield',
'file' => $function->getExecutingFile(),
'line' => $function->getExecutingLine() - 1,
]);
$trace[] = $frame;
$a[$prefix.'trace'] = new TraceStub($trace, false, 0, -1, -1);
} else {
$function = new FrameStub($frame, false, true);
$function = ExceptionCaster::castFrameStub($function, [], $function, true);
$a[$prefix.'executing'] = $function[$prefix.'src'];
}
$a[Caster::PREFIX_VIRTUAL.'closed'] = false;
return $a;
}
public static function castClass(\ReflectionClass $c, array $a, Stub $stub, $isNested, $filter = 0)
{
$prefix = Caster::PREFIX_VIRTUAL;
if ($n = \Reflection::getModifierNames($c->getModifiers())) {
$a[$prefix.'modifiers'] = implode(' ', $n);
}
self::addMap($a, $c, [
'extends' => 'getParentClass',
'implements' => 'getInterfaceNames',
'constants' => 'getConstants',
]);
foreach ($c->getProperties() as $n) {
$a[$prefix.'properties'][$n->name] = $n;
}
foreach ($c->getMethods() as $n) {
$a[$prefix.'methods'][$n->name] = $n;
}
if (!($filter & Caster::EXCLUDE_VERBOSE) && !$isNested) {
self::addExtra($a, $c);
}
return $a;
}
public static function castFunctionAbstract(\ReflectionFunctionAbstract $c, array $a, Stub $stub, $isNested, $filter = 0)
{
$prefix = Caster::PREFIX_VIRTUAL;
self::addMap($a, $c, [
'returnsReference' => 'returnsReference',
'returnType' => 'getReturnType',
'class' => 'getClosureScopeClass',
'this' => 'getClosureThis',
]);
if (isset($a[$prefix.'returnType'])) {
$v = $a[$prefix.'returnType'];
$v = $v->getName();
$a[$prefix.'returnType'] = new ClassStub($a[$prefix.'returnType']->allowsNull() ? '?'.$v : $v, [class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', '']);
}
if (isset($a[$prefix.'class'])) {
$a[$prefix.'class'] = new ClassStub($a[$prefix.'class']);
}
if (isset($a[$prefix.'this'])) {
$a[$prefix.'this'] = new CutStub($a[$prefix.'this']);
}
foreach ($c->getParameters() as $v) {
$k = '$'.$v->name;
if ($v->isVariadic()) {
$k = '...'.$k;
}
if ($v->isPassedByReference()) {
$k = '&'.$k;
}
$a[$prefix.'parameters'][$k] = $v;
}
if (isset($a[$prefix.'parameters'])) {
$a[$prefix.'parameters'] = new EnumStub($a[$prefix.'parameters']);
}
if (!($filter & Caster::EXCLUDE_VERBOSE) && $v = $c->getStaticVariables()) {
foreach ($v as $k => &$v) {
if (\is_object($v)) {
$a[$prefix.'use']['$'.$k] = new CutStub($v);
} else {
$a[$prefix.'use']['$'.$k] = &$v;
}
}
unset($v);
$a[$prefix.'use'] = new EnumStub($a[$prefix.'use']);
}
if (!($filter & Caster::EXCLUDE_VERBOSE) && !$isNested) {
self::addExtra($a, $c);
}
return $a;
}
public static function castMethod(\ReflectionMethod $c, array $a, Stub $stub, $isNested)
{
$a[Caster::PREFIX_VIRTUAL.'modifiers'] = implode(' ', \Reflection::getModifierNames($c->getModifiers()));
return $a;
}
public static function castParameter(\ReflectionParameter $c, array $a, Stub $stub, $isNested)
{
$prefix = Caster::PREFIX_VIRTUAL;
self::addMap($a, $c, [
'position' => 'getPosition',
'isVariadic' => 'isVariadic',
'byReference' => 'isPassedByReference',
'allowsNull' => 'allowsNull',
]);
if ($v = $c->getType()) {
$a[$prefix.'typeHint'] = $v->getName();
}
if (isset($a[$prefix.'typeHint'])) {
$v = $a[$prefix.'typeHint'];
$a[$prefix.'typeHint'] = new ClassStub($v, [class_exists($v, false) || interface_exists($v, false) || trait_exists($v, false) ? $v : '', '']);
} else {
unset($a[$prefix.'allowsNull']);
}
try {
$a[$prefix.'default'] = $v = $c->getDefaultValue();
if ($c->isDefaultValueConstant()) {
$a[$prefix.'default'] = new ConstStub($c->getDefaultValueConstantName(), $v);
}
if (null === $v) {
unset($a[$prefix.'allowsNull']);
}
} catch (\ReflectionException $e) {
}
return $a;
}
public static function castProperty(\ReflectionProperty $c, array $a, Stub $stub, $isNested)
{
$a[Caster::PREFIX_VIRTUAL.'modifiers'] = implode(' ', \Reflection::getModifierNames($c->getModifiers()));
self::addExtra($a, $c);
return $a;
}
public static function castReference(\ReflectionReference $c, array $a, Stub $stub, $isNested)
{
$a[Caster::PREFIX_VIRTUAL.'id'] = $c->getId();
return $a;
}
public static function castExtension(\ReflectionExtension $c, array $a, Stub $stub, $isNested)
{
self::addMap($a, $c, [
'version' => 'getVersion',
'dependencies' => 'getDependencies',
'iniEntries' => 'getIniEntries',
'isPersistent' => 'isPersistent',
'isTemporary' => 'isTemporary',
'constants' => 'getConstants',
'functions' => 'getFunctions',
'classes' => 'getClasses',
]);
return $a;
}
public static function castZendExtension(\ReflectionZendExtension $c, array $a, Stub $stub, $isNested)
{
self::addMap($a, $c, [
'version' => 'getVersion',
'author' => 'getAuthor',
'copyright' => 'getCopyright',
'url' => 'getURL',
]);
return $a;
}
public static function getSignature(array $a)
{
$prefix = Caster::PREFIX_VIRTUAL;
$signature = '';
if (isset($a[$prefix.'parameters'])) {
foreach ($a[$prefix.'parameters']->value as $k => $param) {
$signature .= ', ';
if ($type = $param->getType()) {
if (!$param->isOptional() && $param->allowsNull()) {
$signature .= '?';
}
$signature .= substr(strrchr('\\'.$type->getName(), '\\'), 1).' ';
}
$signature .= $k;
if (!$param->isDefaultValueAvailable()) {
continue;
}
$v = $param->getDefaultValue();
$signature .= ' = ';
if ($param->isDefaultValueConstant()) {
$signature .= substr(strrchr('\\'.$param->getDefaultValueConstantName(), '\\'), 1);
} elseif (null === $v) {
$signature .= 'null';
} elseif (\is_array($v)) {
$signature .= $v ? '[…'.\count($v).']' : '[]';
} elseif (\is_string($v)) {
$signature .= 10 > \strlen($v) && false === strpos($v, '\\') ? "'{$v}'" : "'…".\strlen($v)."'";
} elseif (\is_bool($v)) {
$signature .= $v ? 'true' : 'false';
} else {
$signature .= $v;
}
}
}
$signature = (empty($a[$prefix.'returnsReference']) ? '' : '&').'('.substr($signature, 2).')';
if (isset($a[$prefix.'returnType'])) {
$signature .= ': '.substr(strrchr('\\'.$a[$prefix.'returnType'], '\\'), 1);
}
return $signature;
}
private static function addExtra(array &$a, \Reflector $c)
{
$x = isset($a[Caster::PREFIX_VIRTUAL.'extra']) ? $a[Caster::PREFIX_VIRTUAL.'extra']->value : [];
if (method_exists($c, 'getFileName') && $m = $c->getFileName()) {
$x['file'] = new LinkStub($m, $c->getStartLine());
$x['line'] = $c->getStartLine().' to '.$c->getEndLine();
}
self::addMap($x, $c, self::$extraMap, '');
if ($x) {
$a[Caster::PREFIX_VIRTUAL.'extra'] = new EnumStub($x);
}
}
private static function addMap(array &$a, \Reflector $c, array $map, string $prefix = Caster::PREFIX_VIRTUAL)
{
foreach ($map as $k => $m) {
if (method_exists($c, $m) && false !== ($m = $c->$m()) && null !== $m) {
$a[$prefix.$k] = $m instanceof \Reflector ? $m->name : $m;
}
}
}
}