mirror of https://github.com/rectorphp/rector.git
102 lines
2.9 KiB
PHP
102 lines
2.9 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Php80\Rector\ClassConstFetch;
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use PhpParser\Node;
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use PhpParser\Node\Expr\ClassConstFetch;
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use PhpParser\Node\Expr\Variable;
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use PhpParser\Node\Identifier;
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use PhpParser\Node\Name;
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use PhpParser\Node\Stmt\Class_;
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use PHPStan\Analyser\Scope;
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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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* ::class introduced in php 5.5
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* while $this::class introduced in php 8.0
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*
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* @changelog https://wiki.php.net/rfc/class_name_scalars
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* @changelog https://wiki.php.net/rfc/class_name_literal_on_object
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*
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* @see \Rector\Tests\Php80\Rector\ClassConstFetch\ClassOnThisVariableObjectRector\ClassOnThisVariableObjectRectorTest
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*/
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final class ClassOnThisVariableObjectRector extends AbstractScopeAwareRector implements MinPhpVersionInterface
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{
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Change $this::class to static::class or self::class depends on class modifier', [new CodeSample(<<<'CODE_SAMPLE'
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class SomeClass
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{
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public function run()
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{
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return $this::class;
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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class SomeClass
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{
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public function run()
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{
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return static::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 $scope) : ?Node
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{
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$className = $node->isFinal() ? 'self' : 'static';
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$hasChanged = \false;
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$this->traverseNodesWithCallable($node, function (Node $node) use(&$hasChanged, $className) : ?ClassConstFetch {
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if (!$node instanceof ClassConstFetch) {
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return null;
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}
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if ($this->shouldSkip($node)) {
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return null;
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}
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$node->class = new Name($className);
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$hasChanged = \true;
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return $node;
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});
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if ($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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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::CLASS_ON_OBJECT;
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}
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private function shouldSkip(ClassConstFetch $classConstFetch) : bool
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{
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if (!$classConstFetch->class instanceof Variable) {
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return \true;
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}
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if (!\is_string($classConstFetch->class->name)) {
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return \true;
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}
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if (!$this->isName($classConstFetch->class, 'this')) {
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return \true;
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}
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if (!$classConstFetch->name instanceof Identifier) {
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return \true;
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}
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return !$this->isName($classConstFetch->name, 'class');
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}
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}
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