mirror of https://github.com/rectorphp/rector.git
113 lines
3.6 KiB
PHP
113 lines
3.6 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Php72\Rector\FuncCall;
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use PhpParser\Node;
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use PhpParser\Node\Arg;
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use PhpParser\Node\Expr\BinaryOp\NotIdentical;
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use PhpParser\Node\Expr\FuncCall;
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use PhpParser\Node\Expr\Ternary;
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use PhpParser\Node\Stmt\Class_;
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use PhpParser\NodeTraverser;
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use PHPStan\Analyser\Scope;
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use PHPStan\Type\NullType;
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use Rector\NodeTypeResolver\Node\AttributeKey;
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use Rector\Rector\AbstractScopeAwareRector;
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use Rector\ValueObject\PhpVersionFeature;
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use Rector\VersionBonding\Contract\MinPhpVersionInterface;
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
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use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
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/**
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* @changelog http://php.net/manual/en/migration72.incompatible.php#migration72.incompatible.no-null-to-get_class https://3v4l.org/sk0fp
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*
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* @see \Rector\Tests\Php72\Rector\FuncCall\GetClassOnNullRector\GetClassOnNullRectorTest
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*/
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final class GetClassOnNullRector extends AbstractScopeAwareRector implements MinPhpVersionInterface
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{
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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::NO_NULL_ON_GET_CLASS;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Null is no more allowed in get_class()', [new CodeSample(<<<'CODE_SAMPLE'
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final class SomeClass
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{
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public function getItem()
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{
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$value = null;
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return get_class($value);
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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final class SomeClass
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{
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public function getItem()
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{
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$value = null;
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return $value !== null ? get_class($value) : self::class;
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}
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}
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CODE_SAMPLE
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)]);
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}
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/**
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* @return array<class-string<Node>>
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*/
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public function getNodeTypes() : array
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{
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return [Class_::class];
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}
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/**
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* @param Class_ $node
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*/
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public function refactorWithScope(Node $node, Scope $scope) : ?Node
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{
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$hasChanged = \false;
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$this->traverseNodesWithCallable($node, function (Node $node) use(&$hasChanged) {
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if ($node instanceof Ternary) {
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return NodeTraverser::STOP_TRAVERSAL;
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}
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if (!$node instanceof FuncCall) {
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return null;
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}
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// just created func call
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if ($node->getAttribute(AttributeKey::DO_NOT_CHANGE) === \true) {
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return null;
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}
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if (!$this->isName($node, 'get_class')) {
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return null;
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}
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if ($node->isFirstClassCallable()) {
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return null;
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}
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$firstArg = $node->getArgs()[0] ?? null;
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if (!$firstArg instanceof Arg) {
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return null;
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}
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$firstArgValue = $firstArg->value;
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$firstArgType = $this->getType($firstArgValue);
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if (!$this->nodeTypeResolver->isNullableType($firstArgValue) && !$firstArgType instanceof NullType) {
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return null;
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}
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$notIdentical = new NotIdentical($firstArgValue, $this->nodeFactory->createNull());
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$funcCall = $this->createGetClassFuncCall($node);
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$selfClassConstFetch = $this->nodeFactory->createClassConstReference('self');
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$hasChanged = \true;
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return new Ternary($notIdentical, $funcCall, $selfClassConstFetch);
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});
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if ($hasChanged) {
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return $node;
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}
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return null;
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}
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private function createGetClassFuncCall(FuncCall $oldFuncCall) : FuncCall
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{
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$funcCall = new FuncCall($oldFuncCall->name, $oldFuncCall->args);
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$funcCall->setAttribute(AttributeKey::DO_NOT_CHANGE, \true);
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return $funcCall;
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}
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}
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