%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
declare (strict_types=1);
namespace Rector\CodeQuality\Rector\If_;
use PhpParser\Node;
use PhpParser\Node\Stmt\Else_;
use PhpParser\Node\Stmt\ElseIf_;
use PhpParser\Node\Stmt\If_;
use Rector\Core\Rector\AbstractRector;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
* @see \Rector\Tests\CodeQuality\Rector\If_\ShortenElseIfRector\ShortenElseIfRectorTest
*/
final class ShortenElseIfRector extends AbstractRector
{
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Shortens else/if to elseif', [new CodeSample(<<<'CODE_SAMPLE'
class SomeClass
{
public function run()
{
if ($cond1) {
return $action1;
} else {
if ($cond2) {
return $action2;
}
}
}
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class SomeClass
{
public function run()
{
if ($cond1) {
return $action1;
} elseif ($cond2) {
return $action2;
}
}
}
CODE_SAMPLE
)]);
}
/**
* @return array<class-string<Node>>
*/
public function getNodeTypes() : array
{
return [If_::class];
}
/**
* @param If_ $node
*/
public function refactor(Node $node) : ?Node
{
return $this->shortenElseIf($node);
}
private function shortenElseIf(If_ $node) : ?If_
{
if (!$node->else instanceof Else_) {
return null;
}
$else = $node->else;
if (\count($else->stmts) !== 1) {
return null;
}
$if = $else->stmts[0];
if (!$if instanceof If_) {
return null;
}
// Try to shorten the nested if before transforming it to elseif
$refactored = $this->shortenElseIf($if);
if ($refactored !== null) {
$if = $refactored;
}
$node->elseifs[] = new ElseIf_($if->cond, $if->stmts);
$node->else = $if->else;
$node->elseifs = \array_merge($node->elseifs, $if->elseifs);
return $node;
}
}
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