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<?php declare(strict_types=1); |
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namespace Stratadox\PhpGenerics\Generator\Visitor; |
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use PhpParser\Node; |
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use PhpParser\Node\Name; |
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use PhpParser\Node\Stmt\Namespace_; |
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use PhpParser\Node\Stmt\Use_; |
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use PhpParser\Node\Stmt\UseUse; |
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use PhpParser\NodeTraverser; |
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use PhpParser\NodeVisitorAbstract; |
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use Stratadox\PhpGenerics\Annotation\Generic; |
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use Stratadox\PhpGenerics\Generator\Type\TypeArguments; |
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use function in_array; |
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use function strpos; |
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final class ImportsReplacement extends NodeVisitorAbstract |
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{ |
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/** @var string[] */ |
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private $newImports; |
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public function __construct( |
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string $genericBaseClass, |
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TypeArguments $typeArguments |
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) { |
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$this->newImports = [$genericBaseClass]; |
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foreach ($typeArguments as $argument) { |
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if ( |
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$argument->requiresImport() && |
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!in_array($argument->fullName(), $this->newImports) |
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) { |
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$this->newImports[] = $argument->fullName(); |
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} |
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} |
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} |
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public function leaveNode(Node $node) |
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{ |
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if ($node instanceof Namespace_) { |
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foreach ($this->newImports as $import) { |
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$this->addImportTo($node, $import); |
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} |
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} elseif ($node instanceof Use_) { |
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if ($this->shouldRemoveImport($node->uses[0]->name->toString())) { |
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return NodeTraverser::REMOVE_NODE; |
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} |
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} |
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return null; |
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} |
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private function addImportTo(Node $namespace, string $import): void |
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{ |
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$position = 0; |
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foreach ($namespace->stmts as $stmt) { |
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if ($stmt instanceof Use_ && $stmt->uses[0]->name->toString() < $import) { |
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$position++; |
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} |
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} |
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$namespace->stmts = array_merge( |
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array_slice($namespace->stmts, 0, $position), |
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[new Use_([new UseUse(new Name($import))])], |
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array_slice($namespace->stmts, $position) |
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); |
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} |
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private function shouldRemoveImport(string $use): bool |
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{ |
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return strpos($use, 'Stratadox\\PhpGenerics\\Generic\\') === 0 |
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|| $use === Generic::class; |
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} |
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} |
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Stratadox /
PhpGenerics
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