mirror of https://github.com/rectorphp/rector.git
118 lines
3.3 KiB
PHP
118 lines
3.3 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\DeadCode\Rector\If_;
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use PhpParser\Node;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Expr\PropertyFetch;
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use PhpParser\Node\Expr\StaticPropertyFetch;
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use PhpParser\Node\Stmt;
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use PhpParser\Node\Stmt\If_;
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use PHPStan\Reflection\ClassReflection;
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use PHPStan\Type\Constant\ConstantBooleanType;
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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\If_\RemoveAlwaysTrueIfConditionRector\RemoveAlwaysTrueIfConditionRectorTest
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*/
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final class RemoveAlwaysTrueIfConditionRector extends AbstractRector
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{
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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(ReflectionResolver $reflectionResolver)
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{
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$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 if condition that is always true', [new CodeSample(<<<'CODE_SAMPLE'
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final class SomeClass
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{
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public function go()
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{
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if (1 === 1) {
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return 'yes';
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}
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return 'no';
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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 go()
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{
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return 'yes';
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return 'no';
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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 [If_::class];
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}
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/**
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* @param If_ $node
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* @return If_|null|Stmt[]
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*/
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public function refactor(Node $node)
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{
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if ($node->else !== null) {
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return null;
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}
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// just one if
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if ($node->elseifs !== []) {
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return null;
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}
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$conditionStaticType = $this->getType($node->cond);
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if (!$conditionStaticType instanceof ConstantBooleanType) {
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return null;
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}
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if (!$conditionStaticType->getValue()) {
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return null;
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}
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if ($this->shouldSkipPropertyFetch($node->cond)) {
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return null;
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}
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if ($node->stmts === []) {
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$this->removeNode($node);
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return null;
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}
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return $node->stmts;
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}
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private function shouldSkipPropertyFetch(Expr $expr) : bool
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{
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/** @var PropertyFetch[]|StaticPropertyFetch[] $propertyFetches */
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$propertyFetches = $this->betterNodeFinder->findInstancesOf($expr, [PropertyFetch::class, StaticPropertyFetch::class]);
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foreach ($propertyFetches as $propertyFetch) {
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$classReflection = $this->reflectionResolver->resolveClassReflectionSourceObject($propertyFetch);
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if (!$classReflection instanceof ClassReflection) {
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// cannot get parent Trait_ from Property Fetch
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return \true;
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}
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$propertyName = (string) $this->nodeNameResolver->getName($propertyFetch);
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if (!$classReflection->hasNativeProperty($propertyName)) {
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continue;
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}
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$nativeProperty = $classReflection->getNativeProperty($propertyName);
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if (!$nativeProperty->hasNativeType()) {
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return \true;
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}
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}
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return \false;
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}
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}
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