Your IP : 216.73.216.43
<?php
declare (strict_types=1);
namespace Rector\Core\NodeManipulator;
use PhpParser\Node;
use PhpParser\Node\Expr\Array_;
use PhpParser\Node\Expr\ArrayItem;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Expr\List_;
use PhpParser\Node\Expr\Variable;
use PhpParser\Node\Stmt\ClassMethod;
use Rector\NodeNameResolver\NodeNameResolver;
use Rector\PhpDocParser\NodeTraverser\SimpleCallableNodeTraverser;
final class ArrayDestructVariableFilter
{
/**
* @readonly
* @var \Rector\PhpDocParser\NodeTraverser\SimpleCallableNodeTraverser
*/
private $simpleCallableNodeTraverser;
/**
* @readonly
* @var \Rector\NodeNameResolver\NodeNameResolver
*/
private $nodeNameResolver;
public function __construct(SimpleCallableNodeTraverser $simpleCallableNodeTraverser, NodeNameResolver $nodeNameResolver)
{
$this->simpleCallableNodeTraverser = $simpleCallableNodeTraverser;
$this->nodeNameResolver = $nodeNameResolver;
}
/**
* @param Assign[] $variableAssigns
* @return Assign[]
*/
public function filterOut(array $variableAssigns, ClassMethod $classMethod) : array
{
$arrayDestructionCreatedVariables = [];
$this->simpleCallableNodeTraverser->traverseNodesWithCallable($classMethod, function (Node $node) use(&$arrayDestructionCreatedVariables) {
if (!$node instanceof Assign) {
return null;
}
if (!$node->var instanceof Array_ && !$node->var instanceof List_) {
return null;
}
foreach ($node->var->items as $arrayItem) {
// empty item
if (!$arrayItem instanceof ArrayItem) {
continue;
}
if (!$arrayItem->value instanceof Variable) {
continue;
}
/** @var string $variableName */
$variableName = $this->nodeNameResolver->getName($arrayItem->value);
$arrayDestructionCreatedVariables[] = $variableName;
}
});
return \array_filter($variableAssigns, function (Assign $assign) use($arrayDestructionCreatedVariables) : bool {
return !$this->nodeNameResolver->isNames($assign->var, $arrayDestructionCreatedVariables);
});
}
}