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<?php |
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namespace Groundskeeper\Tokens; |
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use Groundskeeper\Configuration; |
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use Groundskeeper\Exceptions\ValidationException; |
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use Groundskeeper\Tokens\Elements\Element; |
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use Psr\Log\LoggerInterface; |
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final class TokenContainer implements Cleanable, ContainsChildren, Removable |
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{ |
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/** @var array[Token] */ |
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private $children; |
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/** @var Configuration */ |
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private $configuration; |
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/** |
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* Constructor |
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*/ |
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public function __construct(Configuration $configuration) |
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{ |
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$this->children = array(); |
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$this->configuration = $configuration; |
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} |
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/** |
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* Required by ContainsChildren interface. |
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*/ |
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public function getChildren() |
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{ |
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return $this->children; |
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} |
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/** |
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* Required by ContainsChildren interface. |
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*/ |
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public function hasChild(Token $token) |
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{ |
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return array_search($token, $this->children, true) !== false; |
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} |
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/** |
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* Required by ContainsChildren interface. |
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*/ |
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public function appendChild(Token $token) |
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{ |
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$this->children[] = $token; |
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return $this; |
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} |
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/** |
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* Required by ContainsChildren interface. |
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*/ |
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public function prependChild(Token $token) |
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{ |
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array_unshift($this->children, $token); |
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return $this; |
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} |
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/** |
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* Required by ContainsChildren interface. |
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*/ |
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View Code Duplication |
public function removeChild(Token $token) |
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{ |
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$key = array_search($token, $this->children, true); |
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if ($key !== false) { |
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unset($this->children[$key]); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Required by Cleanable interface. |
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*/ |
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public function clean(LoggerInterface $logger) |
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{ |
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return AbstractToken::cleanChildTokens( |
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$this->configuration, |
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$this->children, |
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$logger |
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); |
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} |
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/** |
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* Required by the Removable interface. |
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*/ |
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View Code Duplication |
public function remove(LoggerInterface $logger) |
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{ |
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$hasRemovableElements = $this->configuration->get('element-blacklist') != ''; |
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$hasRemovableTypes = $this->configuration->get('type-blacklist') != ''; |
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foreach ($this->children as $child) { |
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// Check types. |
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if ($hasRemovableTypes && |
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!$this->configuration->isAllowedType($child->getType())) { |
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$logger->debug('Removing ' . $child); |
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$this->removeChild($child); |
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continue; |
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} |
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// Check elements. |
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if ($hasRemovableElements && |
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$child->getType() == Token::ELEMENT && |
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!$this->configuration->isAllowedElement($child->getName())) { |
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$logger->debug('Removing ' . $child); |
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$this->removeChild($child); |
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continue; |
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} |
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// Check children. |
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if ($child instanceof Removable) { |
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$child->remove($logger); |
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} |
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} |
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} |
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} |
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Let’s assume that you have a directory layout like this:
and let’s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: