361 lines
12 KiB
PHP
361 lines
12 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\PropertyInfo\Extractor;
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use phpDocumentor\Reflection\DocBlock;
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use phpDocumentor\Reflection\DocBlock\Tags\InvalidTag;
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use phpDocumentor\Reflection\DocBlockFactory;
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use phpDocumentor\Reflection\DocBlockFactoryInterface;
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use phpDocumentor\Reflection\Types\Context;
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use phpDocumentor\Reflection\Types\ContextFactory;
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use Symfony\Component\PropertyInfo\PropertyDescriptionExtractorInterface;
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use Symfony\Component\PropertyInfo\PropertyTypeExtractorInterface;
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use Symfony\Component\PropertyInfo\Type;
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use Symfony\Component\PropertyInfo\Util\PhpDocTypeHelper;
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/**
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* Extracts data using a PHPDoc parser.
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*
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* @author Kévin Dunglas <dunglas@gmail.com>
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*
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* @final
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*/
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class PhpDocExtractor implements PropertyDescriptionExtractorInterface, PropertyTypeExtractorInterface, ConstructorArgumentTypeExtractorInterface
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{
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public const PROPERTY = 0;
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public const ACCESSOR = 1;
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public const MUTATOR = 2;
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/**
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* @var array<string, array{DocBlock|null, int|null, string|null}>
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*/
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private $docBlocks = [];
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/**
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* @var Context[]
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*/
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private $contexts = [];
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private $docBlockFactory;
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private $contextFactory;
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private $phpDocTypeHelper;
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private $mutatorPrefixes;
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private $accessorPrefixes;
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private $arrayMutatorPrefixes;
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/**
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* @param string[]|null $mutatorPrefixes
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* @param string[]|null $accessorPrefixes
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* @param string[]|null $arrayMutatorPrefixes
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*/
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public function __construct(DocBlockFactoryInterface $docBlockFactory = null, array $mutatorPrefixes = null, array $accessorPrefixes = null, array $arrayMutatorPrefixes = null)
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{
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if (!class_exists(DocBlockFactory::class)) {
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throw new \LogicException(sprintf('Unable to use the "%s" class as the "phpdocumentor/reflection-docblock" package is not installed.', __CLASS__));
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}
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$this->docBlockFactory = $docBlockFactory ?: DocBlockFactory::createInstance();
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$this->contextFactory = new ContextFactory();
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$this->phpDocTypeHelper = new PhpDocTypeHelper();
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$this->mutatorPrefixes = $mutatorPrefixes ?? ReflectionExtractor::$defaultMutatorPrefixes;
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$this->accessorPrefixes = $accessorPrefixes ?? ReflectionExtractor::$defaultAccessorPrefixes;
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$this->arrayMutatorPrefixes = $arrayMutatorPrefixes ?? ReflectionExtractor::$defaultArrayMutatorPrefixes;
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}
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/**
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* {@inheritdoc}
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*/
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public function getShortDescription(string $class, string $property, array $context = []): ?string
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{
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/** @var $docBlock DocBlock */
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[$docBlock] = $this->getDocBlock($class, $property);
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if (!$docBlock) {
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return null;
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}
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$shortDescription = $docBlock->getSummary();
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if (!empty($shortDescription)) {
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return $shortDescription;
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}
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foreach ($docBlock->getTagsByName('var') as $var) {
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if ($var && !$var instanceof InvalidTag) {
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$varDescription = $var->getDescription()->render();
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if (!empty($varDescription)) {
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return $varDescription;
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}
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}
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}
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return null;
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}
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/**
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* {@inheritdoc}
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*/
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public function getLongDescription(string $class, string $property, array $context = []): ?string
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{
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/** @var $docBlock DocBlock */
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[$docBlock] = $this->getDocBlock($class, $property);
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if (!$docBlock) {
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return null;
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}
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$contents = $docBlock->getDescription()->render();
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return '' === $contents ? null : $contents;
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}
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/**
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* {@inheritdoc}
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*/
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public function getTypes(string $class, string $property, array $context = []): ?array
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{
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/** @var $docBlock DocBlock */
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[$docBlock, $source, $prefix] = $this->getDocBlock($class, $property);
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if (!$docBlock) {
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return null;
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}
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switch ($source) {
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case self::PROPERTY:
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$tag = 'var';
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break;
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case self::ACCESSOR:
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$tag = 'return';
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break;
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case self::MUTATOR:
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$tag = 'param';
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break;
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}
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$parentClass = null;
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$types = [];
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/** @var DocBlock\Tags\Var_|DocBlock\Tags\Return_|DocBlock\Tags\Param $tag */
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foreach ($docBlock->getTagsByName($tag) as $tag) {
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if ($tag && !$tag instanceof InvalidTag && null !== $tag->getType()) {
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foreach ($this->phpDocTypeHelper->getTypes($tag->getType()) as $type) {
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switch ($type->getClassName()) {
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case 'self':
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case 'static':
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$resolvedClass = $class;
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break;
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case 'parent':
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if (false !== $resolvedClass = $parentClass ?? $parentClass = get_parent_class($class)) {
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break;
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}
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// no break
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default:
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$types[] = $type;
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continue 2;
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}
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$types[] = new Type(Type::BUILTIN_TYPE_OBJECT, $type->isNullable(), $resolvedClass, $type->isCollection(), $type->getCollectionKeyTypes(), $type->getCollectionValueTypes());
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}
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}
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}
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if (!isset($types[0])) {
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return null;
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}
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if (!\in_array($prefix, $this->arrayMutatorPrefixes)) {
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return $types;
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}
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return [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), $types[0])];
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}
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/**
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* {@inheritdoc}
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*/
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public function getTypesFromConstructor(string $class, string $property): ?array
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{
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$docBlock = $this->getDocBlockFromConstructor($class, $property);
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if (!$docBlock) {
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return null;
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}
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$types = [];
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/** @var DocBlock\Tags\Var_|DocBlock\Tags\Return_|DocBlock\Tags\Param $tag */
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foreach ($docBlock->getTagsByName('param') as $tag) {
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if ($tag && null !== $tag->getType()) {
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$types[] = $this->phpDocTypeHelper->getTypes($tag->getType());
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}
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}
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if (!isset($types[0])) {
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return null;
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}
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return array_merge([], ...$types);
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}
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private function getDocBlockFromConstructor(string $class, string $property): ?DocBlock
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{
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try {
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$reflectionClass = new \ReflectionClass($class);
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} catch (\ReflectionException $e) {
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return null;
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}
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$reflectionConstructor = $reflectionClass->getConstructor();
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if (!$reflectionConstructor) {
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return null;
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}
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try {
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$docBlock = $this->docBlockFactory->create($reflectionConstructor, $this->contextFactory->createFromReflector($reflectionConstructor));
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return $this->filterDocBlockParams($docBlock, $property);
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} catch (\InvalidArgumentException $e) {
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return null;
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}
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}
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private function filterDocBlockParams(DocBlock $docBlock, string $allowedParam): DocBlock
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{
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$tags = array_values(array_filter($docBlock->getTagsByName('param'), function ($tag) use ($allowedParam) {
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return $tag instanceof DocBlock\Tags\Param && $allowedParam === $tag->getVariableName();
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}));
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return new DocBlock($docBlock->getSummary(), $docBlock->getDescription(), $tags, $docBlock->getContext(),
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$docBlock->getLocation(), $docBlock->isTemplateStart(), $docBlock->isTemplateEnd());
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}
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/**
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* @return array{DocBlock|null, int|null, string|null}
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*/
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private function getDocBlock(string $class, string $property): array
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{
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$propertyHash = sprintf('%s::%s', $class, $property);
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if (isset($this->docBlocks[$propertyHash])) {
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return $this->docBlocks[$propertyHash];
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}
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$ucFirstProperty = ucfirst($property);
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switch (true) {
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case $docBlock = $this->getDocBlockFromProperty($class, $property):
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$data = [$docBlock, self::PROPERTY, null];
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break;
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case [$docBlock] = $this->getDocBlockFromMethod($class, $ucFirstProperty, self::ACCESSOR):
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$data = [$docBlock, self::ACCESSOR, null];
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break;
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case [$docBlock, $prefix] = $this->getDocBlockFromMethod($class, $ucFirstProperty, self::MUTATOR):
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$data = [$docBlock, self::MUTATOR, $prefix];
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break;
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default:
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$data = [null, null, null];
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}
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return $this->docBlocks[$propertyHash] = $data;
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}
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private function getDocBlockFromProperty(string $class, string $property): ?DocBlock
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{
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// Use a ReflectionProperty instead of $class to get the parent class if applicable
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try {
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$reflectionProperty = new \ReflectionProperty($class, $property);
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} catch (\ReflectionException $e) {
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return null;
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}
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$reflector = $reflectionProperty->getDeclaringClass();
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foreach ($reflector->getTraits() as $trait) {
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if ($trait->hasProperty($property)) {
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return $this->getDocBlockFromProperty($trait->getName(), $property);
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}
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}
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try {
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return $this->docBlockFactory->create($reflectionProperty, $this->createFromReflector($reflector));
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} catch (\InvalidArgumentException|\RuntimeException $e) {
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return null;
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}
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}
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/**
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* @return array{DocBlock, string}|null
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*/
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private function getDocBlockFromMethod(string $class, string $ucFirstProperty, int $type): ?array
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{
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$prefixes = self::ACCESSOR === $type ? $this->accessorPrefixes : $this->mutatorPrefixes;
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$prefix = null;
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foreach ($prefixes as $prefix) {
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$methodName = $prefix.$ucFirstProperty;
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try {
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$reflectionMethod = new \ReflectionMethod($class, $methodName);
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if ($reflectionMethod->isStatic()) {
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continue;
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}
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if (
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(self::ACCESSOR === $type && 0 === $reflectionMethod->getNumberOfRequiredParameters()) ||
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(self::MUTATOR === $type && $reflectionMethod->getNumberOfParameters() >= 1)
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) {
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break;
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}
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} catch (\ReflectionException $e) {
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// Try the next prefix if the method doesn't exist
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}
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}
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if (!isset($reflectionMethod)) {
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return null;
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}
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$reflector = $reflectionMethod->getDeclaringClass();
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foreach ($reflector->getTraits() as $trait) {
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if ($trait->hasMethod($methodName)) {
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return $this->getDocBlockFromMethod($trait->getName(), $ucFirstProperty, $type);
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}
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}
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try {
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return [$this->docBlockFactory->create($reflectionMethod, $this->createFromReflector($reflector)), $prefix];
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} catch (\InvalidArgumentException|\RuntimeException $e) {
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return null;
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}
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}
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/**
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* Prevents a lot of redundant calls to ContextFactory::createForNamespace().
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*/
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private function createFromReflector(\ReflectionClass $reflector): Context
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{
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$cacheKey = $reflector->getNamespaceName().':'.$reflector->getFileName();
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if (isset($this->contexts[$cacheKey])) {
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return $this->contexts[$cacheKey];
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}
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$this->contexts[$cacheKey] = $this->contextFactory->createFromReflector($reflector);
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return $this->contexts[$cacheKey];
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}
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}
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