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< ? php
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declare ( strict_types = 1 );
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namespace Rector\DeadCode\Rector\For_ ;
use PhpParser\Node ;
use PhpParser\Node\Stmt\Do_ ;
use PhpParser\Node\Stmt\For_ ;
use PhpParser\Node\Stmt\Foreach_ ;
use PhpParser\Node\Stmt\While_ ;
use Rector\Core\Rector\AbstractRector ;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample ;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition ;
/**
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* @ see \Rector\Tests\DeadCode\Rector\For_\RemoveDeadLoopRector\RemoveDeadLoopRectorTest
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*/
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final class RemoveDeadLoopRector extends \Rector\Core\Rector\AbstractRector
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{
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public function getRuleDefinition () : \Symplify\RuleDocGenerator\ValueObject\RuleDefinition
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{
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return new \Symplify\RuleDocGenerator\ValueObject\RuleDefinition ( 'Remove loop with no body' , [ new \Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample ( <<< 'CODE_SAMPLE'
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class SomeClass
{
public function run ( $values )
{
for ( $i = 1 ; $i < count ( $values ); ++ $i ) {
}
}
}
CODE_SAMPLE
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, <<< 'CODE_SAMPLE'
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class SomeClass
{
public function run ( $values )
{
}
}
CODE_SAMPLE
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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 [ \PhpParser\Node\Stmt\Do_ :: class , \PhpParser\Node\Stmt\For_ :: class , \PhpParser\Node\Stmt\Foreach_ :: class , \PhpParser\Node\Stmt\While_ :: class ];
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}
/**
* @ param Do_ | For_ | Foreach_ | While_ $node
*/
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public function refactor ( \PhpParser\Node $node ) : ? \PhpParser\Node
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{
if ( $node -> stmts !== []) {
return null ;
}
$this -> removeNode ( $node );
return $node ;
}
}