mirror of https://github.com/rectorphp/rector.git
158 lines
5.2 KiB
PHP
158 lines
5.2 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Php72\Rector\FuncCall;
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use PhpParser\Node;
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use PhpParser\Node\Arg;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Expr\Assign;
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use PhpParser\Node\Expr\BinaryOp\Concat;
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use PhpParser\Node\Expr\Closure;
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use PhpParser\Node\Expr\FuncCall;
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use PhpParser\Node\Name;
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use PhpParser\Node\Param;
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use PhpParser\Node\Scalar\Encapsed;
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use PhpParser\Node\Scalar\String_;
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use PhpParser\Node\Stmt;
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use PhpParser\Node\Stmt\Expression;
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use Rector\Core\Exception\ShouldNotHappenException;
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use Rector\Core\Php\ReservedKeywordAnalyzer;
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use Rector\Core\PhpParser\Parser\InlineCodeParser;
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use Rector\Core\Rector\AbstractRector;
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use Rector\Core\ValueObject\PhpVersionFeature;
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use Rector\Php72\NodeFactory\AnonymousFunctionFactory;
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use Rector\VersionBonding\Contract\MinPhpVersionInterface;
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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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* @changelog https://stackoverflow.com/q/48161526/1348344 http://php.net/manual/en/migration72.deprecated.php#migration72.deprecated.create_function-function
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*
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* @see \Rector\Tests\Php72\Rector\FuncCall\CreateFunctionToAnonymousFunctionRector\CreateFunctionToAnonymousFunctionRectorTest
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*/
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final class CreateFunctionToAnonymousFunctionRector extends AbstractRector implements MinPhpVersionInterface
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{
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/**
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* @readonly
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* @var \Rector\Core\PhpParser\Parser\InlineCodeParser
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*/
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private $inlineCodeParser;
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/**
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* @readonly
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* @var \Rector\Php72\NodeFactory\AnonymousFunctionFactory
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*/
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private $anonymousFunctionFactory;
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/**
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* @readonly
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* @var \Rector\Core\Php\ReservedKeywordAnalyzer
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*/
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private $reservedKeywordAnalyzer;
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public function __construct(InlineCodeParser $inlineCodeParser, AnonymousFunctionFactory $anonymousFunctionFactory, ReservedKeywordAnalyzer $reservedKeywordAnalyzer)
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{
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$this->inlineCodeParser = $inlineCodeParser;
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$this->anonymousFunctionFactory = $anonymousFunctionFactory;
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$this->reservedKeywordAnalyzer = $reservedKeywordAnalyzer;
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}
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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::DEPRECATE_CREATE_FUNCTION;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Use anonymous functions instead of deprecated create_function()', [new CodeSample(<<<'CODE_SAMPLE'
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class ClassWithCreateFunction
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{
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public function run()
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{
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$callable = create_function('$matches', "return '$delimiter' . strtolower(\$matches[1]);");
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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 ClassWithCreateFunction
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{
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public function run()
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{
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$callable = function($matches) use ($delimiter) {
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return $delimiter . strtolower($matches[1]);
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};
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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 [FuncCall::class];
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}
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/**
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* @param FuncCall $node
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* @return Closure|null
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*/
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public function refactor(Node $node) : ?Node
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{
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if (!$this->isName($node, 'create_function')) {
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return null;
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}
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if ($node->isFirstClassCallable()) {
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return null;
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}
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if (\count($node->getArgs()) < 2) {
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return null;
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}
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$firstExpr = $node->getArgs()[0]->value;
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$secondExpr = $node->getArgs()[1]->value;
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$params = $this->createParamsFromString($firstExpr);
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$stmts = $this->parseStringToBody($secondExpr);
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$refactored = $this->anonymousFunctionFactory->create($params, $stmts, null);
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foreach ($refactored->uses as $key => $use) {
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$variableName = $this->getName($use->var);
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if ($variableName === null) {
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continue;
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}
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if ($this->reservedKeywordAnalyzer->isNativeVariable($variableName)) {
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unset($refactored->uses[$key]);
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}
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}
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return $refactored;
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}
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/**
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* @return Param[]
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*/
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private function createParamsFromString(Expr $expr) : array
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{
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$content = $this->inlineCodeParser->stringify($expr);
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$content = '<?php $value = function(' . $content . ') {};';
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$nodes = $this->inlineCodeParser->parse($content);
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/** @var Expression $expression */
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$expression = $nodes[0];
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/** @var Assign $assign */
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$assign = $expression->expr;
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$function = $assign->expr;
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if (!$function instanceof Closure) {
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throw new ShouldNotHappenException();
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}
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return $function->params;
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}
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/**
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* @return Stmt[]
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*/
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private function parseStringToBody(Expr $expr) : array
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{
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if (!$expr instanceof String_ && !$expr instanceof Encapsed && !$expr instanceof Concat) {
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// special case of code elsewhere
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return [$this->createEval($expr)];
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}
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$expr = $this->inlineCodeParser->stringify($expr);
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return $this->inlineCodeParser->parse($expr);
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}
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private function createEval(Expr $expr) : Expression
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{
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$evalFuncCall = new FuncCall(new Name('eval'), [new Arg($expr)]);
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return new Expression($evalFuncCall);
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}
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}
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