mirror of
https://github.com/rectorphp/rector.git
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7e7a2f067a
476cfb00cb
disable fallback for now
213 lines
7.5 KiB
PHP
213 lines
7.5 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\DeadCode\Rector\Node;
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use PhpParser\Node;
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use PhpParser\Node\Expr\Assign;
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use PhpParser\Node\Expr\CallLike;
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use PhpParser\Node\Expr\FuncCall;
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use PhpParser\Node\Expr\New_;
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use PhpParser\Node\Expr\Variable;
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use PhpParser\Node\Stmt;
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use PhpParser\Node\Stmt\Echo_;
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use PhpParser\Node\Stmt\Expression;
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use PhpParser\Node\Stmt\Foreach_;
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use PhpParser\Node\Stmt\If_;
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use PhpParser\Node\Stmt\InlineHTML;
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use PhpParser\Node\Stmt\Nop;
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use PhpParser\Node\Stmt\Return_;
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use PhpParser\Node\Stmt\Static_;
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use PhpParser\Node\Stmt\Switch_;
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use PhpParser\Node\Stmt\Throw_;
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use PhpParser\Node\Stmt\While_;
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use PHPStan\PhpDocParser\Ast\PhpDoc\VarTagValueNode;
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use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
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use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
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use Rector\Comments\NodeDocBlock\DocBlockUpdater;
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use Rector\Contract\PhpParser\Node\StmtsAwareInterface;
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use Rector\NodeManipulator\StmtsManipulator;
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use Rector\PhpParser\Node\BetterNodeFinder;
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use Rector\PhpParser\Node\Value\ValueResolver;
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use Rector\Rector\AbstractRector;
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
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use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
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/**
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* @see \Rector\Tests\DeadCode\Rector\Node\RemoveNonExistingVarAnnotationRector\RemoveNonExistingVarAnnotationRectorTest
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*
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* @changelog https://github.com/phpstan/phpstan/commit/d17e459fd9b45129c5deafe12bca56f30ea5ee99#diff-9f3541876405623b0d18631259763dc1
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*/
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final class RemoveNonExistingVarAnnotationRector extends AbstractRector
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{
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/**
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* @readonly
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* @var \Rector\NodeManipulator\StmtsManipulator
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*/
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private $stmtsManipulator;
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/**
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* @readonly
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* @var \Rector\Comments\NodeDocBlock\DocBlockUpdater
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*/
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private $docBlockUpdater;
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/**
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* @readonly
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* @var \Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory
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*/
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private $phpDocInfoFactory;
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/**
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* @readonly
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* @var \Rector\PhpParser\Node\Value\ValueResolver
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*/
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private $valueResolver;
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/**
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* @readonly
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* @var \Rector\PhpParser\Node\BetterNodeFinder
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*/
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private $betterNodeFinder;
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/**
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* @var array<class-string<Stmt>>
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*/
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private const NODE_TYPES = [Foreach_::class, Static_::class, Echo_::class, Return_::class, Expression::class, Throw_::class, If_::class, While_::class, Switch_::class, Nop::class];
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public function __construct(StmtsManipulator $stmtsManipulator, DocBlockUpdater $docBlockUpdater, PhpDocInfoFactory $phpDocInfoFactory, ValueResolver $valueResolver, BetterNodeFinder $betterNodeFinder)
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{
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$this->stmtsManipulator = $stmtsManipulator;
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$this->docBlockUpdater = $docBlockUpdater;
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$this->phpDocInfoFactory = $phpDocInfoFactory;
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$this->valueResolver = $valueResolver;
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$this->betterNodeFinder = $betterNodeFinder;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Removes non-existing @var annotations above the code', [new CodeSample(<<<'CODE_SAMPLE'
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class SomeClass
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{
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public function get()
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{
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/** @var Training[] $trainings */
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return $this->getData();
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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class SomeClass
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{
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public function get()
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{
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return $this->getData();
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}
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}
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CODE_SAMPLE
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)]);
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}
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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 [StmtsAwareInterface::class];
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}
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/**
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* @param StmtsAwareInterface $node
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*/
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public function refactor(Node $node) : ?Node
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{
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if ($node->stmts === null) {
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return null;
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}
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$hasChanged = \false;
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$extractValues = [];
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foreach ($node->stmts as $key => $stmt) {
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if ($stmt instanceof Expression && $stmt->expr instanceof FuncCall && $this->isName($stmt->expr, 'extract') && !$stmt->expr->isFirstClassCallable()) {
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$appendExtractValues = $this->valueResolver->getValue($stmt->expr->getArgs()[0]->value);
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if (!\is_array($appendExtractValues)) {
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// nothing can do as value is dynamic
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break;
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}
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$extractValues = \array_merge($extractValues, \array_keys($appendExtractValues));
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continue;
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}
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if ($this->shouldSkip($node, $key, $stmt, $extractValues)) {
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continue;
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}
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$phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($stmt);
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$varTagValueNode = $phpDocInfo->getVarTagValueNode();
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if (!$varTagValueNode instanceof VarTagValueNode) {
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continue;
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}
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if ($this->isObjectShapePseudoType($varTagValueNode)) {
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continue;
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}
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$variableName = \ltrim($varTagValueNode->variableName, '$');
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if ($variableName === '' && $this->isAllowedEmptyVariableName($stmt)) {
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continue;
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}
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if ($this->hasVariableName($stmt, $variableName)) {
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continue;
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}
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$comments = $node->getComments();
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if (isset($comments[1])) {
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// skip edge case with double comment, as impossible to resolve by PHPStan doc parser
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continue;
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}
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$phpDocInfo->removeByType(VarTagValueNode::class);
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$this->docBlockUpdater->updateRefactoredNodeWithPhpDocInfo($stmt);
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$hasChanged = \true;
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}
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if ($hasChanged) {
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return $node;
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}
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return null;
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}
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/**
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* @param string[] $extractValues
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*/
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private function shouldSkip(StmtsAwareInterface $stmtsAware, int $key, Stmt $stmt, array $extractValues) : bool
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{
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if (!\in_array(\get_class($stmt), self::NODE_TYPES, \true)) {
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return \true;
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}
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if (\count($stmt->getComments()) !== 1) {
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return \true;
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}
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foreach ($extractValues as $extractValue) {
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if ($this->stmtsManipulator->isVariableUsedInNextStmt($stmtsAware, $key + 1, $extractValue)) {
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return \true;
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}
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}
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return isset($stmtsAware->stmts[$key + 1]) && $stmtsAware->stmts[$key + 1] instanceof InlineHTML;
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}
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private function hasVariableName(Stmt $stmt, string $variableName) : bool
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{
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return (bool) $this->betterNodeFinder->findFirst($stmt, function (Node $node) use($variableName) : bool {
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if (!$node instanceof Variable) {
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return \false;
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}
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return $this->isName($node, $variableName);
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});
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}
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/**
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* This is a hack,
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* that waits on phpdoc-parser to get merged - https://github.com/phpstan/phpdoc-parser/pull/145
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*/
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private function isObjectShapePseudoType(VarTagValueNode $varTagValueNode) : bool
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{
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if (!$varTagValueNode->type instanceof IdentifierTypeNode) {
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return \false;
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}
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if ($varTagValueNode->type->name !== 'object') {
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return \false;
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}
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if (\strncmp($varTagValueNode->description, '{', \strlen('{')) !== 0) {
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return \false;
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}
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return \strpos($varTagValueNode->description, '}') !== \false;
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}
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private function isAllowedEmptyVariableName(Stmt $stmt) : bool
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{
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if ($stmt instanceof Return_ && $stmt->expr instanceof CallLike && !$stmt->expr instanceof New_) {
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return \true;
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}
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return $stmt instanceof Expression && $stmt->expr instanceof Assign && $stmt->expr->var instanceof Variable;
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}
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}
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