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< ? php
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declare ( strict_types = 1 );
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namespace Rector\Php70\Rector\FuncCall ;
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use PhpParser\Node ;
use PhpParser\Node\Arg ;
use PhpParser\Node\Expr\FuncCall ;
use PhpParser\Node\Scalar\LNumber ;
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use Rector\Rector\AbstractRector ;
use Rector\ValueObject\PhpVersionFeature ;
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use Rector\VersionBonding\Contract\MinPhpVersionInterface ;
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample ;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition ;
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/**
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* @ see \Rector\Tests\Php70\Rector\FuncCall\MultiDirnameRector\MultiDirnameRectorTest
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*/
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final class MultiDirnameRector extends AbstractRector implements MinPhpVersionInterface
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{
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/**
* @ var string
*/
private const DIRNAME = 'dirname' ;
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/**
* @ var int
*/
private $nestingLevel = 0 ;
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public function getRuleDefinition () : RuleDefinition
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{
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return new RuleDefinition ( 'Changes multiple dirname() calls to one with nesting level' , [ new CodeSample ( 'dirname(dirname($path));' , 'dirname($path, 2);' )]);
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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 [ FuncCall :: class ];
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}
/**
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* @ param FuncCall $node
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*/
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public function refactor ( Node $node ) : ? Node
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{
$this -> nestingLevel = 0 ;
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if ( ! $this -> isName ( $node , self :: DIRNAME )) {
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return null ;
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}
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$activeFuncCallNode = $node ;
$lastFuncCallNode = $node ;
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while (( $activeFuncCallNode = $this -> matchNestedDirnameFuncCall ( $activeFuncCallNode )) instanceof FuncCall ) {
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$lastFuncCallNode = $activeFuncCallNode ;
}
// nothing to improve
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if ( $this -> shouldSkip ()) {
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return null ;
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}
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$node -> args [ 0 ] = $lastFuncCallNode -> args [ 0 ];
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$node -> args [ 1 ] = new Arg ( new LNumber ( $this -> nestingLevel ));
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return $node ;
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}
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public function provideMinPhpVersion () : int
{
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return PhpVersionFeature :: DIRNAME_LEVELS ;
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}
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private function shouldSkip () : bool
{
return $this -> nestingLevel < 2 ;
}
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private function matchNestedDirnameFuncCall ( FuncCall $funcCall ) : ? FuncCall
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{
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if ( ! $this -> isName ( $funcCall , self :: DIRNAME )) {
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return null ;
}
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if ( $funcCall -> isFirstClassCallable ()) {
return null ;
}
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$args = $funcCall -> getArgs ();
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if ( \count ( $args ) >= 3 ) {
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return null ;
}
// dirname($path, <LEVEL>);
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if ( \count ( $args ) === 2 ) {
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if ( ! $args [ 1 ] -> value instanceof LNumber ) {
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return null ;
}
/** @var LNumber $levelNumber */
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$levelNumber = $args [ 1 ] -> value ;
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$this -> nestingLevel += $levelNumber -> value ;
} else {
++ $this -> nestingLevel ;
}
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$nestedFuncCallNode = $args [ 0 ] -> value ;
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if ( ! $nestedFuncCallNode instanceof FuncCall ) {
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return null ;
}
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if ( $this -> isName ( $nestedFuncCallNode , self :: DIRNAME )) {
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return $nestedFuncCallNode ;
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}
return null ;
}
}