mirror of https://github.com/rectorphp/rector.git
99 lines
2.7 KiB
PHP
99 lines
2.7 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\DeadCode\Rector\ClassConst;
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use PhpParser\Node;
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use PhpParser\Node\Stmt\ClassConst;
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use PhpParser\NodeTraverser;
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use PHPStan\Reflection\ClassReflection;
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use Rector\Core\NodeAnalyzer\EnumAnalyzer;
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use Rector\Core\NodeManipulator\ClassConstManipulator;
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use Rector\Core\Rector\AbstractRector;
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use Rector\Core\Reflection\ReflectionResolver;
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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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* @see \Rector\Tests\DeadCode\Rector\ClassConst\RemoveUnusedPrivateClassConstantRector\RemoveUnusedPrivateClassConstantRectorTest
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*/
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final class RemoveUnusedPrivateClassConstantRector extends AbstractRector
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{
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/**
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* @readonly
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* @var \Rector\Core\NodeManipulator\ClassConstManipulator
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*/
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private $classConstManipulator;
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/**
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* @readonly
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* @var \Rector\Core\NodeAnalyzer\EnumAnalyzer
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*/
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private $enumAnalyzer;
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/**
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* @readonly
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* @var \Rector\Core\Reflection\ReflectionResolver
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*/
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private $reflectionResolver;
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public function __construct(ClassConstManipulator $classConstManipulator, EnumAnalyzer $enumAnalyzer, ReflectionResolver $reflectionResolver)
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{
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$this->classConstManipulator = $classConstManipulator;
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$this->enumAnalyzer = $enumAnalyzer;
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$this->reflectionResolver = $reflectionResolver;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Remove unused class constants', [new CodeSample(<<<'CODE_SAMPLE'
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class SomeClass
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{
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private const SOME_CONST = 'dead';
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public function run()
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{
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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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}
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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 [ClassConst::class];
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}
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/**
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* @param ClassConst $node
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*/
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public function refactor(Node $node) : ?int
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{
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if ($this->shouldSkipClassConst($node)) {
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return null;
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}
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$classReflection = $this->reflectionResolver->resolveClassReflection($node);
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if (!$classReflection instanceof ClassReflection) {
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return null;
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}
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if ($this->classConstManipulator->hasClassConstFetch($node, $classReflection)) {
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return null;
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}
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return NodeTraverser::REMOVE_NODE;
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}
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private function shouldSkipClassConst(ClassConst $classConst) : bool
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{
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if (!$classConst->isPrivate()) {
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return \true;
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}
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if (\count($classConst->consts) !== 1) {
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return \true;
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}
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return $this->enumAnalyzer->isEnumClassConst($classConst);
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}
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}
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