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<?php
declare (strict_types=1);
namespace Rector\ReadWrite\NodeFinder;
use PhpParser\Node;
use PhpParser\Node\Expr;
use PhpParser\Node\Expr\Variable;
use PhpParser\Node\Stmt\Foreach_;
use Rector\Core\PhpParser\Comparing\NodeComparator;
use Rector\Core\PhpParser\Node\BetterNodeFinder;
use Rector\NodeNameResolver\NodeNameResolver;
use Rector\NodeNestingScope\NodeFinder\ScopeAwareNodeFinder;
use Rector\NodeTypeResolver\Node\AttributeKey;
final class NodeUsageFinder
{
/**
* @readonly
* @var \Rector\NodeNameResolver\NodeNameResolver
*/
private $nodeNameResolver;
/**
* @readonly
* @var \Rector\Core\PhpParser\Node\BetterNodeFinder
*/
private $betterNodeFinder;
/**
* @readonly
* @var \Rector\NodeNestingScope\NodeFinder\ScopeAwareNodeFinder
*/
private $scopeAwareNodeFinder;
/**
* @readonly
* @var \Rector\Core\PhpParser\Comparing\NodeComparator
*/
private $nodeComparator;
public function __construct(NodeNameResolver $nodeNameResolver, BetterNodeFinder $betterNodeFinder, ScopeAwareNodeFinder $scopeAwareNodeFinder, NodeComparator $nodeComparator)
{
$this->nodeNameResolver = $nodeNameResolver;
$this->betterNodeFinder = $betterNodeFinder;
$this->scopeAwareNodeFinder = $scopeAwareNodeFinder;
$this->nodeComparator = $nodeComparator;
}
/**
* @param Node[] $nodes
* @return Variable[]
*/
public function findVariableUsages(array $nodes, Variable $variable) : array
{
$variableName = $this->nodeNameResolver->getName($variable);
if ($variableName === null) {
return [];
}
return $this->betterNodeFinder->find($nodes, function (Node $node) use($variable, $variableName) : bool {
if (!$node instanceof Variable) {
return \false;
}
if ($node === $variable) {
return \false;
}
if (!$this->nodeNameResolver->isName($node, $variableName)) {
return \false;
}
$assignedTo = $node->getAttribute(AttributeKey::ASSIGNED_TO);
return !$assignedTo instanceof Node;
});
}
public function findPreviousForeachNodeUsage(Foreach_ $foreach, Expr $expr) : ?Node
{
return $this->scopeAwareNodeFinder->findParent($foreach, function (Node $node) use($expr) : bool {
// skip itself
if ($node === $expr) {
return \false;
}
return $this->nodeComparator->areNodesEqual($node, $expr);
}, [Foreach_::class]);
}
}