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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the humbug/php-scoper package. |
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* |
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* Copyright (c) 2017 Théo FIDRY <[email protected]>, |
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* Pádraic Brady <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Humbug\PhpScoper\NodeVisitor\UseStmt; |
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use PhpParser\Node; |
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use PhpParser\Node\Name; |
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use PhpParser\Node\Stmt\GroupUse; |
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use PhpParser\Node\Stmt\UseUse; |
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use PhpParser\NodeVisitorAbstract; |
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/** |
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* Scopes single level use statements with an alias:. |
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* |
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* ``` |
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* use Foo as Bar; |
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* |
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* new Foo(); |
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* ``` |
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* |
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* => |
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* |
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* ``` |
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* use Humbug\Foo as Bar; |
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* |
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* new Foo(); |
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* ``` |
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*/ |
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final class ScopeSingleLevelUseAliasVisitor extends NodeVisitorAbstract |
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{ |
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private $prefix; |
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/** |
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* @var array |
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*/ |
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private $aliases; |
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public function __construct(string $prefix) |
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{ |
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$this->prefix = $prefix; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function beforeTraverse(array $nodes) |
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{ |
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$this->aliases = []; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function enterNode(Node $node): Node |
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{ |
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// Collate all single level aliases |
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if ($node instanceof UseUse |
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&& (false === $node->hasAttribute('parent') // double check if this one may be removed |
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|| false === ($node->getAttribute('parent') instanceof GroupUse) |
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) |
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&& $this->prefix !== $node->name->getFirst() |
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// Is a one level use statement |
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&& 1 === count($node->name->parts) |
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// Has an alias |
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&& $node->alias !== $node->name->getFirst() |
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) { |
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$this->aliases[$node->alias] = $node; |
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return $node; |
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} |
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return $this->scopeUseStmtIfUsedInAnyNameAsAliasedNamespace($node); |
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} |
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private function scopeUseStmtIfUsedInAnyNameAsAliasedNamespace(Node $node): Node |
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{ |
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if ($node instanceof Name |
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&& 1 < count($node->parts) |
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&& in_array($node->getFirst(), array_keys($this->aliases)) |
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) { |
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$nodeToPrefix = $this->aliases[$node->getFirst()]; |
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$nodeToPrefix->name = Name::concat($this->prefix, $nodeToPrefix->name); |
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unset($this->aliases[$node->getFirst()]); |
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} |
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return $node; |
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} |
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} |
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humbug /
php-scoper
