%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
declare (strict_types=1);
namespace Rector\Core\NodeAnalyzer;
use PhpParser\Node;
use PhpParser\Node\Expr\ClosureUse;
use PhpParser\Node\Expr\Variable;
use PhpParser\Node\Param;
use PhpParser\Node\Stmt\Global_;
use PhpParser\Node\Stmt\Static_;
use PhpParser\Node\Stmt\StaticVar;
use Rector\Core\PhpParser\Comparing\NodeComparator;
use Rector\Core\PhpParser\Node\BetterNodeFinder;
use Rector\NodeTypeResolver\Node\AttributeKey;
final class VariableAnalyzer
{
/**
* @readonly
* @var \Rector\Core\PhpParser\Node\BetterNodeFinder
*/
private $betterNodeFinder;
/**
* @readonly
* @var \Rector\Core\PhpParser\Comparing\NodeComparator
*/
private $nodeComparator;
public function __construct(BetterNodeFinder $betterNodeFinder, NodeComparator $nodeComparator)
{
$this->betterNodeFinder = $betterNodeFinder;
$this->nodeComparator = $nodeComparator;
}
public function isStaticOrGlobal(Variable $variable) : bool
{
if ($this->isParentStaticOrGlobal($variable)) {
return \true;
}
return (bool) $this->betterNodeFinder->findFirstPrevious($variable, function (Node $node) use($variable) : bool {
if (!\in_array(\get_class($node), [Static_::class, Global_::class], \true)) {
return \false;
}
/**
* @var Static_|Global_ $node
* @var StaticVar[]|Variable[] $vars
*/
$vars = $node->vars;
foreach ($vars as $var) {
$staticVarVariable = $var instanceof StaticVar ? $var->var : $var;
if ($this->nodeComparator->areNodesEqual($staticVarVariable, $variable)) {
return \true;
}
}
return \false;
});
}
public function isUsedByReference(Variable $variable) : bool
{
return (bool) $this->betterNodeFinder->findFirstPrevious($variable, function (Node $subNode) use($variable) : bool {
if ($this->isParamReferenced($subNode, $variable)) {
return \true;
}
if (!$subNode instanceof Variable) {
return \false;
}
if (!$this->nodeComparator->areNodesEqual($subNode, $variable)) {
return \false;
}
$parentNode = $subNode->getAttribute(AttributeKey::PARENT_NODE);
if (!$parentNode instanceof ClosureUse) {
return \false;
}
return $parentNode->byRef;
});
}
private function isParentStaticOrGlobal(Variable $variable) : bool
{
$parentNode = $variable->getAttribute(AttributeKey::PARENT_NODE);
if (!$parentNode instanceof Node) {
return \false;
}
if ($parentNode instanceof Global_) {
return \true;
}
if (!$parentNode instanceof StaticVar) {
return \false;
}
$parentParentNode = $parentNode->getAttribute(AttributeKey::PARENT_NODE);
return $parentParentNode instanceof Static_;
}
private function isParamReferenced(Node $node, Variable $variable) : bool
{
if (!$node instanceof Param) {
return \false;
}
if (!$this->nodeComparator->areNodesEqual($node->var, $variable)) {
return \false;
}
return $node->byRef;
}
}
Zerion Mini Shell 1.0