97 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			97 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?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\Validator\Mapping\Loader;
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use Symfony\Component\Validator\Constraint;
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use Symfony\Component\Validator\Constraints\Callback;
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use Symfony\Component\Validator\Constraints\GroupSequence;
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use Symfony\Component\Validator\Constraints\GroupSequenceProvider;
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use Symfony\Component\Validator\Exception\MappingException;
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use Symfony\Component\Validator\Mapping\ClassMetadata;
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/**
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 * Loads validation metadata using PHP attributes.
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 *
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 * @author Bernhard Schussek <bschussek@gmail.com>
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 * @author Alexander M. Turek <me@derrabus.de>
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 * @author Alexandre Daubois <alex.daubois@gmail.com>
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 */
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class AttributeLoader implements LoaderInterface
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{
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    public function loadClassMetadata(ClassMetadata $metadata): bool
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    {
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        $reflClass = $metadata->getReflectionClass();
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        $className = $reflClass->name;
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        $success = false;
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        foreach ($this->getAttributes($reflClass) as $constraint) {
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            if ($constraint instanceof GroupSequence) {
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                $metadata->setGroupSequence($constraint->groups);
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            } elseif ($constraint instanceof GroupSequenceProvider) {
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                $metadata->setGroupProvider($constraint->provider);
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                $metadata->setGroupSequenceProvider(true);
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            } elseif ($constraint instanceof Constraint) {
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                $metadata->addConstraint($constraint);
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            }
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            $success = true;
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        }
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        foreach ($reflClass->getProperties() as $property) {
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            if ($property->getDeclaringClass()->name === $className) {
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                foreach ($this->getAttributes($property) as $constraint) {
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                    if ($constraint instanceof Constraint) {
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                        $metadata->addPropertyConstraint($property->name, $constraint);
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                    }
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                    $success = true;
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                }
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            }
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        }
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        foreach ($reflClass->getMethods() as $method) {
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            if ($method->getDeclaringClass()->name === $className) {
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                foreach ($this->getAttributes($method) as $constraint) {
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                    if ($constraint instanceof Callback) {
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                        $constraint->callback = $method->getName();
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                        $metadata->addConstraint($constraint);
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                    } elseif ($constraint instanceof Constraint) {
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                        if (preg_match('/^(get|is|has)(.+)$/i', $method->name, $matches)) {
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                            $metadata->addGetterMethodConstraint(lcfirst($matches[2]), $matches[0], $constraint);
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                        } else {
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                            throw new MappingException(\sprintf('The constraint on "%s::%s()" cannot be added. Constraints can only be added on methods beginning with "get", "is" or "has".', $className, $method->name));
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                        }
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                    }
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                    $success = true;
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                }
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            }
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        }
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        return $success;
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    }
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    private function getAttributes(\ReflectionMethod|\ReflectionClass|\ReflectionProperty $reflection): iterable
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    {
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        foreach ($reflection->getAttributes(GroupSequence::class) as $attribute) {
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            yield $attribute->newInstance();
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        }
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        foreach ($reflection->getAttributes(GroupSequenceProvider::class) as $attribute) {
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            yield $attribute->newInstance();
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        }
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        foreach ($reflection->getAttributes(Constraint::class, \ReflectionAttribute::IS_INSTANCEOF) as $attribute) {
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            yield $attribute->newInstance();
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        }
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    }
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}
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