%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
declare (strict_types=1);
namespace Rector\PostRector\Rector;
use PhpParser\Node;
use PhpParser\Node\Expr\BinaryOp;
use PhpParser\Node\Expr\MethodCall;
use PhpParser\NodeTraverser;
use Rector\Core\PhpParser\Node\NodeFactory;
use Rector\NodeNameResolver\NodeNameResolver;
use Rector\NodeTypeResolver\Node\AttributeKey;
use Rector\PostRector\Collector\NodesToRemoveCollector;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
final class NodeRemovingPostRector extends \Rector\PostRector\Rector\AbstractPostRector
{
/**
* @readonly
* @var \Rector\Core\PhpParser\Node\NodeFactory
*/
private $nodeFactory;
/**
* @readonly
* @var \Rector\NodeNameResolver\NodeNameResolver
*/
private $nodeNameResolver;
/**
* @readonly
* @var \Rector\PostRector\Collector\NodesToRemoveCollector
*/
private $nodesToRemoveCollector;
public function __construct(NodeFactory $nodeFactory, NodeNameResolver $nodeNameResolver, NodesToRemoveCollector $nodesToRemoveCollector)
{
$this->nodeFactory = $nodeFactory;
$this->nodeNameResolver = $nodeNameResolver;
$this->nodesToRemoveCollector = $nodesToRemoveCollector;
}
public function getPriority() : int
{
return 800;
}
public function enterNode(Node $node) : ?Node
{
if (!$this->nodesToRemoveCollector->isActive()) {
return null;
}
// special case for fluent methods
foreach ($this->nodesToRemoveCollector->getNodesToRemove() as $key => $nodeToRemove) {
if (!$node instanceof MethodCall) {
continue;
}
if (!$nodeToRemove instanceof MethodCall) {
continue;
}
// replace chain method call by non-chain method call
if (!$this->isChainMethodCallNodeToBeRemoved($node, $nodeToRemove)) {
continue;
}
$this->nodesToRemoveCollector->unset($key);
$methodName = $this->nodeNameResolver->getName($node->name);
/** @var MethodCall $nestedMethodCall */
$nestedMethodCall = $node->var;
/** @var string $methodName */
return $this->nodeFactory->createMethodCall($nestedMethodCall->var, $methodName, $node->args);
}
if (!$node instanceof BinaryOp) {
return null;
}
return $this->removePartOfBinaryOp($node);
}
/**
* @return int|\PhpParser\Node
*/
public function leaveNode(Node $node)
{
foreach ($this->nodesToRemoveCollector->getNodesToRemove() as $key => $nodeToRemove) {
$nodeToRemoveParent = $nodeToRemove->getAttribute(AttributeKey::PARENT_NODE);
if ($nodeToRemoveParent instanceof BinaryOp) {
continue;
}
if ($node === $nodeToRemove) {
$this->nodesToRemoveCollector->unset($key);
return NodeTraverser::REMOVE_NODE;
}
}
return $node;
}
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Remove nodes from weird positions', [new CodeSample(<<<'CODE_SAMPLE'
class SomeClass
{
public function run($value)
{
if ($value) {
return 1;
}
}
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class SomeClass
{
public function run($value)
{
return 1;
}
}
CODE_SAMPLE
)]);
}
private function isChainMethodCallNodeToBeRemoved(MethodCall $mainMethodCall, MethodCall $toBeRemovedMethodCall) : bool
{
if (!$mainMethodCall->var instanceof MethodCall) {
return \false;
}
if ($toBeRemovedMethodCall !== $mainMethodCall->var) {
return \false;
}
$methodName = $this->nodeNameResolver->getName($mainMethodCall->name);
return $methodName !== null;
}
private function removePartOfBinaryOp(BinaryOp $binaryOp) : ?Node
{
// handle left/right binary remove, e.g. "true && false" → remove false → "true"
foreach ($this->nodesToRemoveCollector->getNodesToRemove() as $key => $nodeToRemove) {
// remove node
$nodeToRemoveParentNode = $nodeToRemove->getAttribute(AttributeKey::PARENT_NODE);
if (!$nodeToRemoveParentNode instanceof BinaryOp) {
continue;
}
if ($binaryOp->left === $nodeToRemove) {
$this->nodesToRemoveCollector->unset($key);
return $binaryOp->right;
}
if ($binaryOp->right === $nodeToRemove) {
$this->nodesToRemoveCollector->unset($key);
return $binaryOp->left;
}
}
return null;
}
}
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