mirror of https://github.com/rectorphp/rector.git
111 lines
3.2 KiB
PHP
111 lines
3.2 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\DeadCode\Rector\ClassMethod;
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use PhpParser\Node;
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use PhpParser\Node\Stmt\Class_;
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use PhpParser\Node\Stmt\ClassMethod;
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use Rector\Core\NodeAnalyzer\ParamAnalyzer;
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use Rector\Core\Rector\AbstractRector;
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use Rector\Core\ValueObject\MethodName;
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use Rector\Removing\NodeManipulator\ComplexNodeRemover;
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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\ClassMethod\RemoveUnusedConstructorParamRector\RemoveUnusedConstructorParamRectorTest
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*/
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final class RemoveUnusedConstructorParamRector extends AbstractRector
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{
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/**
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* @readonly
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* @var \Rector\Core\NodeAnalyzer\ParamAnalyzer
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*/
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private $paramAnalyzer;
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/**
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* @readonly
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* @var \Rector\Removing\NodeManipulator\ComplexNodeRemover
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*/
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private $complexNodeRemover;
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public function __construct(ParamAnalyzer $paramAnalyzer, ComplexNodeRemover $complexNodeRemover)
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{
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$this->paramAnalyzer = $paramAnalyzer;
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$this->complexNodeRemover = $complexNodeRemover;
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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 parameter in constructor', [new CodeSample(<<<'CODE_SAMPLE'
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final class SomeClass
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{
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private $hey;
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public function __construct($hey, $man)
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{
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$this->hey = $hey;
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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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private $hey;
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public function __construct($hey)
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{
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$this->hey = $hey;
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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 refactor(Node $node) : ?Node
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{
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$constructorClassMethod = $node->getMethod(MethodName::CONSTRUCT);
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if (!$constructorClassMethod instanceof ClassMethod) {
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return null;
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}
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if ($constructorClassMethod->params === []) {
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return null;
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}
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if ($this->paramAnalyzer->hasPropertyPromotion($constructorClassMethod->params)) {
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return null;
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}
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if ($constructorClassMethod->isAbstract()) {
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return null;
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}
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$changedConstructorClassMethod = $this->processRemoveParams($constructorClassMethod);
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if (!$changedConstructorClassMethod instanceof ClassMethod) {
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return null;
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}
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return $node;
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}
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private function processRemoveParams(ClassMethod $classMethod) : ?ClassMethod
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{
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$paramKeysToBeRemoved = [];
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foreach ($classMethod->params as $key => $param) {
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if ($this->paramAnalyzer->isParamUsedInClassMethod($classMethod, $param)) {
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continue;
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}
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$paramKeysToBeRemoved[] = $key;
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}
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if ($paramKeysToBeRemoved === []) {
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return null;
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}
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$removedParamKeys = $this->complexNodeRemover->processRemoveParamWithKeys($classMethod, $paramKeysToBeRemoved);
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if ($removedParamKeys !== []) {
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return $classMethod;
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}
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return null;
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}
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}
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