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ReduceMultipleDefaultSwitchRector.php
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ReduceMultipleDefaultSwitchRector.php
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<?php
declare (strict_types=1);
namespace Rector\Php70\Rector\Switch_;
use PhpParser\Node;
use PhpParser\Node\Expr;
use PhpParser\Node\Stmt\Switch_;
use Rector\Rector\AbstractRector;
use Rector\ValueObject\PhpVersionFeature;
use Rector\VersionBonding\Contract\MinPhpVersionInterface;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
* @see \Rector\Tests\Php70\Rector\Switch_\ReduceMultipleDefaultSwitchRector\ReduceMultipleDefaultSwitchRectorTest
*/
final class ReduceMultipleDefaultSwitchRector extends AbstractRector implements MinPhpVersionInterface
{
public function provideMinPhpVersion() : int
{
return PhpVersionFeature::NO_MULTIPLE_DEFAULT_SWITCH;
}
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Remove first default switch, that is ignored', [new CodeSample(<<<'CODE_SAMPLE'
switch ($expr) {
default:
echo "Hello World";
default:
echo "Goodbye Moon!";
break;
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
switch ($expr) {
default:
echo "Goodbye Moon!";
break;
}
CODE_SAMPLE
)]);
}
/**
* @return array<class-string<Node>>
*/
public function getNodeTypes() : array
{
return [Switch_::class];
}
/**
* @param Switch_ $node
*/
public function refactor(Node $node) : ?Node
{
$defaultCases = [];
foreach ($node->cases as $key => $case) {
if ($case->cond instanceof Expr) {
continue;
}
$defaultCases[$key] = $case;
}
$defaultCaseCount = \count($defaultCases);
if ($defaultCaseCount < 2) {
return null;
}
foreach ($node->cases as $key => $case) {
if ($case->cond instanceof Expr) {
continue;
}
// remove previous default cases
if ($defaultCaseCount > 1) {
unset($node->cases[$key]);
--$defaultCaseCount;
}
}
return $node;
}
}