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<?php |
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/** |
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* For the full copyright and license information, please view |
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* the LICENSE file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace loophp\fpt\Psalm\EventHandler\ComposeSimple; |
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use PhpParser\Node; |
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use PhpParser\Node\FunctionLike; |
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use PhpParser\NodeTraverser; |
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use PhpParser\NodeVisitorAbstract; |
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use Psalm\Internal\Analyzer\MethodAnalyzer; |
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use Psalm\Plugin\EventHandler\AfterFunctionLikeAnalysisInterface; |
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use Psalm\Plugin\EventHandler\Event\AfterFunctionLikeAnalysisEvent; |
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final class AfterExpressionAnalysisProvider implements AfterFunctionLikeAnalysisInterface |
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{ |
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public static function afterStatementAnalysis(AfterFunctionLikeAnalysisEvent $event): ?bool { |
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$stmtSource = $event->getStatementsSource(); |
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if (false === ($stmtSource instanceof MethodAnalyzer)) { |
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return false; |
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} |
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if ('of' !== $stmtSource->getMethodName()) { |
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return false; |
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} |
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$ast = $event->getStmt(); |
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if (false === ($ast instanceof FunctionLike)) { |
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return false; |
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} |
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$closure = self::getNextClosure($ast); |
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// This is the $fs param of ComposeSimple::of()(callable ...$fs); |
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// ----------------------------------------------------------^ |
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$param = current($closure->getParams()); |
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// Questions |
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// 1. What to do from there? |
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return true; |
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} |
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private static function getNextClosure($ast): Node\Expr\Closure |
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{ |
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$traverser = new NodeTraverser(); |
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$traverser->addVisitor(new class extends NodeVisitorAbstract { |
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public function enterNode(Node $node): ?Node\Stmt\Return_ { |
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return $node instanceof Node\Stmt\Return_ ? $node : null; |
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} |
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}); |
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/** @var array<int, \PhpParser\Node\Stmt\Return_> $returnStatement */ |
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$returnStatement = $traverser->traverse($ast->getStmts()); |
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return current($returnStatement)->expr; |
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} |
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} |
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loophp /
fpt
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