2021-07-27 14:46:32 +02:00
< ? 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\DependencyInjection\Compiler ;
use Symfony\Component\Config\Resource\ClassExistenceResource ;
use Symfony\Component\DependencyInjection\ContainerBuilder ;
use Symfony\Component\DependencyInjection\Definition ;
use Symfony\Component\DependencyInjection\Exception\AutowiringFailedException ;
use Symfony\Component\DependencyInjection\Exception\RuntimeException ;
use Symfony\Component\DependencyInjection\LazyProxy\ProxyHelper ;
use Symfony\Component\DependencyInjection\TypedReference ;
/**
* Inspects existing service definitions and wires the autowired ones using the type hints of their classes .
*
* @ author Kévin Dunglas < dunglas @ gmail . com >
* @ author Nicolas Grekas < p @ tchwork . com >
*/
class AutowirePass extends AbstractRecursivePass
{
private $types ;
private $ambiguousServiceTypes ;
private $lastFailure ;
private $throwOnAutowiringException ;
private $decoratedClass ;
private $decoratedId ;
private $methodCalls ;
2022-05-03 15:24:29 +02:00
private $defaultArgument ;
2021-07-27 14:46:32 +02:00
private $getPreviousValue ;
private $decoratedMethodIndex ;
private $decoratedMethodArgumentIndex ;
private $typesClone ;
public function __construct ( bool $throwOnAutowireException = true )
{
$this -> throwOnAutowiringException = $throwOnAutowireException ;
2022-05-03 15:24:29 +02:00
$this -> defaultArgument = new class () {
public $value ;
public $names ;
};
2021-07-27 14:46:32 +02:00
}
/**
* { @ inheritdoc }
*/
public function process ( ContainerBuilder $container )
{
try {
$this -> typesClone = clone $this ;
parent :: process ( $container );
} finally {
$this -> decoratedClass = null ;
$this -> decoratedId = null ;
$this -> methodCalls = null ;
2022-05-03 15:24:29 +02:00
$this -> defaultArgument -> names = null ;
2021-07-27 14:46:32 +02:00
$this -> getPreviousValue = null ;
$this -> decoratedMethodIndex = null ;
$this -> decoratedMethodArgumentIndex = null ;
$this -> typesClone = null ;
}
}
/**
* { @ inheritdoc }
*/
protected function processValue ( $value , $isRoot = false )
{
try {
return $this -> doProcessValue ( $value , $isRoot );
} catch ( AutowiringFailedException $e ) {
if ( $this -> throwOnAutowiringException ) {
throw $e ;
}
$this -> container -> getDefinition ( $this -> currentId ) -> addError ( $e -> getMessageCallback () ? ? $e -> getMessage ());
return parent :: processValue ( $value , $isRoot );
}
}
/**
* @ return mixed
*/
private function doProcessValue ( $value , bool $isRoot = false )
{
if ( $value instanceof TypedReference ) {
if ( $ref = $this -> getAutowiredReference ( $value )) {
return $ref ;
}
if ( ContainerBuilder :: RUNTIME_EXCEPTION_ON_INVALID_REFERENCE === $value -> getInvalidBehavior ()) {
$message = $this -> createTypeNotFoundMessageCallback ( $value , 'it' );
// since the error message varies by referenced id and $this->currentId, so should the id of the dummy errored definition
$this -> container -> register ( $id = sprintf ( '.errored.%s.%s' , $this -> currentId , ( string ) $value ), $value -> getType ())
-> addError ( $message );
return new TypedReference ( $id , $value -> getType (), $value -> getInvalidBehavior (), $value -> getName ());
}
}
$value = parent :: processValue ( $value , $isRoot );
if ( ! $value instanceof Definition || ! $value -> isAutowired () || $value -> isAbstract () || ! $value -> getClass ()) {
return $value ;
}
if ( ! $reflectionClass = $this -> container -> getReflectionClass ( $value -> getClass (), false )) {
$this -> container -> log ( $this , sprintf ( 'Skipping service "%s": Class or interface "%s" cannot be loaded.' , $this -> currentId , $value -> getClass ()));
return $value ;
}
$this -> methodCalls = $value -> getMethodCalls ();
try {
$constructor = $this -> getConstructor ( $value , false );
} catch ( RuntimeException $e ) {
throw new AutowiringFailedException ( $this -> currentId , $e -> getMessage (), 0 , $e );
}
if ( $constructor ) {
array_unshift ( $this -> methodCalls , [ $constructor , $value -> getArguments ()]);
}
$this -> methodCalls = $this -> autowireCalls ( $reflectionClass , $isRoot );
if ( $constructor ) {
[, $arguments ] = array_shift ( $this -> methodCalls );
if ( $arguments !== $value -> getArguments ()) {
$value -> setArguments ( $arguments );
}
}
if ( $this -> methodCalls !== $value -> getMethodCalls ()) {
$value -> setMethodCalls ( $this -> methodCalls );
}
return $value ;
}
private function autowireCalls ( \ReflectionClass $reflectionClass , bool $isRoot ) : array
{
$this -> decoratedId = null ;
$this -> decoratedClass = null ;
$this -> getPreviousValue = null ;
if ( $isRoot && ( $definition = $this -> container -> getDefinition ( $this -> currentId )) && null !== ( $this -> decoratedId = $definition -> innerServiceId ) && $this -> container -> has ( $this -> decoratedId )) {
$this -> decoratedClass = $this -> container -> findDefinition ( $this -> decoratedId ) -> getClass ();
}
2022-05-03 15:24:29 +02:00
$patchedIndexes = [];
2021-07-27 14:46:32 +02:00
foreach ( $this -> methodCalls as $i => $call ) {
[ $method , $arguments ] = $call ;
if ( $method instanceof \ReflectionFunctionAbstract ) {
$reflectionMethod = $method ;
} else {
$definition = new Definition ( $reflectionClass -> name );
try {
$reflectionMethod = $this -> getReflectionMethod ( $definition , $method );
} catch ( RuntimeException $e ) {
if ( $definition -> getFactory ()) {
continue ;
}
throw $e ;
}
}
2022-05-03 15:24:29 +02:00
$arguments = $this -> autowireMethod ( $reflectionMethod , $arguments , $i );
2021-07-27 14:46:32 +02:00
if ( $arguments !== $call [ 1 ]) {
$this -> methodCalls [ $i ][ 1 ] = $arguments ;
2022-05-03 15:24:29 +02:00
$patchedIndexes [] = $i ;
}
}
// use named arguments to skip complex default values
foreach ( $patchedIndexes as $i ) {
$namedArguments = null ;
$arguments = $this -> methodCalls [ $i ][ 1 ];
foreach ( $arguments as $j => $value ) {
if ( $namedArguments && ! $value instanceof $this -> defaultArgument ) {
unset ( $arguments [ $j ]);
$arguments [ $namedArguments [ $j ]] = $value ;
}
if ( $namedArguments || ! $value instanceof $this -> defaultArgument ) {
continue ;
}
if ( \PHP_VERSION_ID >= 80100 && ( \is_array ( $value -> value ) ? $value -> value : \is_object ( $value -> value ))) {
unset ( $arguments [ $j ]);
$namedArguments = $value -> names ;
} else {
$arguments [ $j ] = $value -> value ;
}
2021-07-27 14:46:32 +02:00
}
2022-05-03 15:24:29 +02:00
$this -> methodCalls [ $i ][ 1 ] = $arguments ;
2021-07-27 14:46:32 +02:00
}
return $this -> methodCalls ;
}
/**
* Autowires the constructor or a method .
*
* @ return array The autowired arguments
*
* @ throws AutowiringFailedException
*/
2022-05-03 15:24:29 +02:00
private function autowireMethod ( \ReflectionFunctionAbstract $reflectionMethod , array $arguments , int $methodIndex ) : array
2021-07-27 14:46:32 +02:00
{
$class = $reflectionMethod instanceof \ReflectionMethod ? $reflectionMethod -> class : $this -> currentId ;
$method = $reflectionMethod -> name ;
$parameters = $reflectionMethod -> getParameters ();
if ( $reflectionMethod -> isVariadic ()) {
array_pop ( $parameters );
}
2022-05-03 15:24:29 +02:00
$this -> defaultArgument -> names = new \ArrayObject ();
2021-07-27 14:46:32 +02:00
foreach ( $parameters as $index => $parameter ) {
2022-05-03 15:24:29 +02:00
$this -> defaultArgument -> names [ $index ] = $parameter -> name ;
2021-07-27 14:46:32 +02:00
if ( \array_key_exists ( $index , $arguments ) && '' !== $arguments [ $index ]) {
continue ;
}
$type = ProxyHelper :: getTypeHint ( $reflectionMethod , $parameter , true );
if ( ! $type ) {
if ( isset ( $arguments [ $index ])) {
continue ;
}
// no default value? Then fail
if ( ! $parameter -> isDefaultValueAvailable ()) {
// For core classes, isDefaultValueAvailable() can
// be false when isOptional() returns true. If the
// argument *is* optional, allow it to be missing
if ( $parameter -> isOptional ()) {
2022-05-03 15:24:29 +02:00
-- $index ;
break ;
2021-07-27 14:46:32 +02:00
}
$type = ProxyHelper :: getTypeHint ( $reflectionMethod , $parameter , false );
$type = $type ? sprintf ( 'is type-hinted "%s"' , ltrim ( $type , '\\' )) : 'has no type-hint' ;
throw new AutowiringFailedException ( $this -> currentId , sprintf ( 'Cannot autowire service "%s": argument "$%s" of method "%s()" %s, you should configure its value explicitly.' , $this -> currentId , $parameter -> name , $class !== $this -> currentId ? $class . '::' . $method : $method , $type ));
}
// specifically pass the default value
2022-05-03 15:24:29 +02:00
$arguments [ $index ] = clone $this -> defaultArgument ;
$arguments [ $index ] -> value = $parameter -> getDefaultValue ();
2021-07-27 14:46:32 +02:00
continue ;
}
$getValue = function () use ( $type , $parameter , $class , $method ) {
if ( ! $value = $this -> getAutowiredReference ( $ref = new TypedReference ( $type , $type , ContainerBuilder :: EXCEPTION_ON_INVALID_REFERENCE , $parameter -> name ))) {
$failureMessage = $this -> createTypeNotFoundMessageCallback ( $ref , sprintf ( 'argument "$%s" of method "%s()"' , $parameter -> name , $class !== $this -> currentId ? $class . '::' . $method : $method ));
if ( $parameter -> isDefaultValueAvailable ()) {
2022-05-03 15:24:29 +02:00
$value = clone $this -> defaultArgument ;
$value -> value = $parameter -> getDefaultValue ();
2021-07-27 14:46:32 +02:00
} elseif ( ! $parameter -> allowsNull ()) {
throw new AutowiringFailedException ( $this -> currentId , $failureMessage );
}
}
return $value ;
};
if ( $this -> decoratedClass && $isDecorated = is_a ( $this -> decoratedClass , $type , true )) {
if ( $this -> getPreviousValue ) {
// The inner service is injected only if there is only 1 argument matching the type of the decorated class
// across all arguments of all autowired methods.
// If a second matching argument is found, the default behavior is restored.
$getPreviousValue = $this -> getPreviousValue ;
$this -> methodCalls [ $this -> decoratedMethodIndex ][ 1 ][ $this -> decoratedMethodArgumentIndex ] = $getPreviousValue ();
$this -> decoratedClass = null ; // Prevent further checks
} else {
$arguments [ $index ] = new TypedReference ( $this -> decoratedId , $this -> decoratedClass );
$this -> getPreviousValue = $getValue ;
2022-05-03 15:24:29 +02:00
$this -> decoratedMethodIndex = $methodIndex ;
2021-07-27 14:46:32 +02:00
$this -> decoratedMethodArgumentIndex = $index ;
continue ;
}
}
$arguments [ $index ] = $getValue ();
}
if ( $parameters && ! isset ( $arguments [ ++ $index ])) {
while ( 0 <= -- $index ) {
2022-05-03 15:24:29 +02:00
if ( ! $arguments [ $index ] instanceof $this -> defaultArgument ) {
2021-07-27 14:46:32 +02:00
break ;
}
unset ( $arguments [ $index ]);
}
}
// it's possible index 1 was set, then index 0, then 2, etc
// make sure that we re-order so they're injected as expected
ksort ( $arguments );
return $arguments ;
}
/**
* Returns a reference to the service matching the given type , if any .
*/
private function getAutowiredReference ( TypedReference $reference ) : ? TypedReference
{
$this -> lastFailure = null ;
$type = $reference -> getType ();
if ( $type !== ( string ) $reference ) {
return $reference ;
}
if ( null !== $name = $reference -> getName ()) {
if ( $this -> container -> has ( $alias = $type . ' $' . $name ) && ! $this -> container -> findDefinition ( $alias ) -> isAbstract ()) {
return new TypedReference ( $alias , $type , $reference -> getInvalidBehavior ());
}
if ( $this -> container -> has ( $name ) && ! $this -> container -> findDefinition ( $name ) -> isAbstract ()) {
foreach ( $this -> container -> getAliases () as $id => $alias ) {
2022-05-03 15:24:29 +02:00
if ( $name === ( string ) $alias && str_starts_with ( $id , $type . ' $' )) {
2021-07-27 14:46:32 +02:00
return new TypedReference ( $name , $type , $reference -> getInvalidBehavior ());
}
}
}
}
if ( $this -> container -> has ( $type ) && ! $this -> container -> findDefinition ( $type ) -> isAbstract ()) {
return new TypedReference ( $type , $type , $reference -> getInvalidBehavior ());
}
return null ;
}
/**
* Populates the list of available types .
*/
private function populateAvailableTypes ( ContainerBuilder $container )
{
$this -> types = [];
$this -> ambiguousServiceTypes = [];
foreach ( $container -> getDefinitions () as $id => $definition ) {
$this -> populateAvailableType ( $container , $id , $definition );
}
}
/**
* Populates the list of available types for a given definition .
*/
private function populateAvailableType ( ContainerBuilder $container , string $id , Definition $definition )
{
// Never use abstract services
if ( $definition -> isAbstract ()) {
return ;
}
if ( '' === $id || '.' === $id [ 0 ] || $definition -> isDeprecated () || ! $reflectionClass = $container -> getReflectionClass ( $definition -> getClass (), false )) {
return ;
}
foreach ( $reflectionClass -> getInterfaces () as $reflectionInterface ) {
$this -> set ( $reflectionInterface -> name , $id );
}
do {
$this -> set ( $reflectionClass -> name , $id );
} while ( $reflectionClass = $reflectionClass -> getParentClass ());
}
/**
* Associates a type and a service id if applicable .
*/
private function set ( string $type , string $id )
{
// is this already a type/class that is known to match multiple services?
if ( isset ( $this -> ambiguousServiceTypes [ $type ])) {
$this -> ambiguousServiceTypes [ $type ][] = $id ;
return ;
}
// check to make sure the type doesn't match multiple services
if ( ! isset ( $this -> types [ $type ]) || $this -> types [ $type ] === $id ) {
$this -> types [ $type ] = $id ;
return ;
}
// keep an array of all services matching this type
if ( ! isset ( $this -> ambiguousServiceTypes [ $type ])) {
$this -> ambiguousServiceTypes [ $type ] = [ $this -> types [ $type ]];
unset ( $this -> types [ $type ]);
}
$this -> ambiguousServiceTypes [ $type ][] = $id ;
}
2022-05-03 15:24:29 +02:00
private function createTypeNotFoundMessageCallback ( TypedReference $reference , string $label ) : \Closure
2021-07-27 14:46:32 +02:00
{
if ( null === $this -> typesClone -> container ) {
$this -> typesClone -> container = new ContainerBuilder ( $this -> container -> getParameterBag ());
$this -> typesClone -> container -> setAliases ( $this -> container -> getAliases ());
$this -> typesClone -> container -> setDefinitions ( $this -> container -> getDefinitions ());
$this -> typesClone -> container -> setResourceTracking ( false );
}
$currentId = $this -> currentId ;
return ( function () use ( $reference , $label , $currentId ) {
return $this -> createTypeNotFoundMessage ( $reference , $label , $currentId );
}) -> bindTo ( $this -> typesClone );
}
private function createTypeNotFoundMessage ( TypedReference $reference , string $label , string $currentId ) : string
{
if ( ! $r = $this -> container -> getReflectionClass ( $type = $reference -> getType (), false )) {
// either $type does not exist or a parent class does not exist
try {
$resource = new ClassExistenceResource ( $type , false );
// isFresh() will explode ONLY if a parent class/trait does not exist
$resource -> isFresh ( 0 );
$parentMsg = false ;
} catch ( \ReflectionException $e ) {
$parentMsg = $e -> getMessage ();
}
$message = sprintf ( 'has type "%s" but this class %s.' , $type , $parentMsg ? sprintf ( 'is missing a parent class (%s)' , $parentMsg ) : 'was not found' );
} else {
$alternatives = $this -> createTypeAlternatives ( $this -> container , $reference );
$message = $this -> container -> has ( $type ) ? 'this service is abstract' : 'no such service exists' ;
$message = sprintf ( 'references %s "%s" but %s.%s' , $r -> isInterface () ? 'interface' : 'class' , $type , $message , $alternatives );
if ( $r -> isInterface () && ! $alternatives ) {
$message .= ' Did you create a class that implements this interface?' ;
}
}
$message = sprintf ( 'Cannot autowire service "%s": %s %s' , $currentId , $label , $message );
if ( null !== $this -> lastFailure ) {
$message = $this -> lastFailure . " \n " . $message ;
$this -> lastFailure = null ;
}
return $message ;
}
private function createTypeAlternatives ( ContainerBuilder $container , TypedReference $reference ) : string
{
// try suggesting available aliases first
if ( $message = $this -> getAliasesSuggestionForType ( $container , $type = $reference -> getType ())) {
return ' ' . $message ;
}
if ( null === $this -> ambiguousServiceTypes ) {
$this -> populateAvailableTypes ( $container );
}
$servicesAndAliases = $container -> getServiceIds ();
if ( ! $container -> has ( $type ) && false !== $key = array_search ( strtolower ( $type ), array_map ( 'strtolower' , $servicesAndAliases ))) {
return sprintf ( ' Did you mean "%s"?' , $servicesAndAliases [ $key ]);
} elseif ( isset ( $this -> ambiguousServiceTypes [ $type ])) {
$message = sprintf ( 'one of these existing services: "%s"' , implode ( '", "' , $this -> ambiguousServiceTypes [ $type ]));
} elseif ( isset ( $this -> types [ $type ])) {
$message = sprintf ( 'the existing "%s" service' , $this -> types [ $type ]);
} else {
return '' ;
}
return sprintf ( ' You should maybe alias this %s to %s.' , class_exists ( $type , false ) ? 'class' : 'interface' , $message );
}
private function getAliasesSuggestionForType ( ContainerBuilder $container , string $type ) : ? string
{
$aliases = [];
foreach ( class_parents ( $type ) + class_implements ( $type ) as $parent ) {
if ( $container -> has ( $parent ) && ! $container -> findDefinition ( $parent ) -> isAbstract ()) {
$aliases [] = $parent ;
}
}
if ( 1 < $len = \count ( $aliases )) {
$message = 'Try changing the type-hint to one of its parents: ' ;
for ( $i = 0 , -- $len ; $i < $len ; ++ $i ) {
$message .= sprintf ( '%s "%s", ' , class_exists ( $aliases [ $i ], false ) ? 'class' : 'interface' , $aliases [ $i ]);
}
$message .= sprintf ( 'or %s "%s".' , class_exists ( $aliases [ $i ], false ) ? 'class' : 'interface' , $aliases [ $i ]);
return $message ;
}
if ( $aliases ) {
return sprintf ( 'Try changing the type-hint to "%s" instead.' , $aliases [ 0 ]);
}
return null ;
}
}