Current Directory: /opt/cpanel/ea-wappspector/vendor/rector/rector/rules/DeadCode/SideEffect
Viewing File: /opt/cpanel/ea-wappspector/vendor/rector/rector/rules/DeadCode/SideEffect/PureFunctionDetector.php
<?php
declare (strict_types=1);
namespace Rector\DeadCode\SideEffect;
use PhpParser\Node\Expr\FuncCall;
use PhpParser\Node\Name;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\Native\NativeFunctionReflection;
use PHPStan\Reflection\ReflectionProvider;
use Rector\NodeNameResolver\NodeNameResolver;
final class PureFunctionDetector
{
/**
* @readonly
* @var \Rector\NodeNameResolver\NodeNameResolver
*/
private $nodeNameResolver;
/**
* @readonly
* @var \PHPStan\Reflection\ReflectionProvider
*/
private $reflectionProvider;
public function __construct(NodeNameResolver $nodeNameResolver, ReflectionProvider $reflectionProvider)
{
$this->nodeNameResolver = $nodeNameResolver;
$this->reflectionProvider = $reflectionProvider;
}
public function detect(FuncCall $funcCall, Scope $scope) : bool
{
$funcCallName = $this->nodeNameResolver->getName($funcCall);
if ($funcCallName === null) {
return \false;
}
$name = new Name($funcCallName);
$hasFunction = $this->reflectionProvider->hasFunction($name, $scope);
if (!$hasFunction) {
return \false;
}
$functionReflection = $this->reflectionProvider->getFunction($name, $scope);
if (!$functionReflection instanceof NativeFunctionReflection) {
return \false;
}
// yes() and maybe() may have side effect
return $functionReflection->hasSideEffects()->no();
}
}