%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
declare (strict_types=1);
namespace Rector\CodeQuality\Rector\If_;
use PhpParser\Node;
use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
use PhpParser\Node\Stmt\If_;
use PHPStan\PhpDocParser\Ast\PhpDoc\VarTagValueNode;
use Rector\BetterPhpDocParser\Comment\CommentsMerger;
use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfo;
use Rector\Core\Rector\AbstractRector;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
* @see \Rector\Tests\CodeQuality\Rector\If_\CombineIfRector\CombineIfRectorTest
*/
final class CombineIfRector extends AbstractRector
{
/**
* @readonly
* @var \Rector\BetterPhpDocParser\Comment\CommentsMerger
*/
private $commentsMerger;
public function __construct(CommentsMerger $commentsMerger)
{
$this->commentsMerger = $commentsMerger;
}
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Merges nested if statements', [new CodeSample(<<<'CODE_SAMPLE'
class SomeClass
{
public function run()
{
if ($cond1) {
if ($cond2) {
return 'foo';
}
}
}
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class SomeClass
{
public function run()
{
if ($cond1 && $cond2) {
return 'foo';
}
}
}
CODE_SAMPLE
)]);
}
/**
* @return array<class-string<Node>>
*/
public function getNodeTypes() : array
{
return [If_::class];
}
/**
* @param If_ $node
*/
public function refactor(Node $node) : ?Node
{
if ($this->shouldSkip($node)) {
return null;
}
/** @var If_ $subIf */
$subIf = $node->stmts[0];
if ($this->hasVarTag($subIf)) {
return null;
}
$node->cond = new BooleanAnd($node->cond, $subIf->cond);
$node->stmts = $subIf->stmts;
$this->commentsMerger->keepComments($node, [$subIf]);
return $node;
}
private function shouldSkip(If_ $if) : bool
{
if ($if->else !== null) {
return \true;
}
if (\count($if->stmts) !== 1) {
return \true;
}
if ($if->elseifs !== []) {
return \true;
}
if (!$if->stmts[0] instanceof If_) {
return \true;
}
if ($if->stmts[0]->else !== null) {
return \true;
}
return (bool) $if->stmts[0]->elseifs;
}
private function hasVarTag(If_ $if) : bool
{
$subIfPhpDocInfo = $this->phpDocInfoFactory->createFromNode($if);
if (!$subIfPhpDocInfo instanceof PhpDocInfo) {
return \false;
}
return $subIfPhpDocInfo->getVarTagValueNode() instanceof VarTagValueNode;
}
}
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