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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; |
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use Humbug\PhpScoper\NodeVisitor\Collection\NamespaceStmtCollection; |
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use PhpParser\Node; |
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use PhpParser\Node\Name; |
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use PhpParser\Node\Stmt\Class_; |
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use PhpParser\Node\Stmt\Interface_; |
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use PhpParser\Node\Stmt\Namespace_; |
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use PhpParser\NodeVisitorAbstract; |
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use function Humbug\PhpScoper\clone_node; |
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/** |
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* Prefixes the relevant namespaces. |
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* |
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* ``` |
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* namespace 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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* namespace Humbug\Foo; |
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* ``` |
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*/ |
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final class NamespaceStmtPrefixer extends NodeVisitorAbstract |
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{ |
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private $prefix; |
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private $namespaceStatements; |
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private $hasWhitelistedNode; |
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private $globalWhitelister; |
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public function __construct( |
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string $prefix, |
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NamespaceStmtCollection $namespaceStatements, |
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callable $globalWhitelister |
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) { |
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$this->prefix = $prefix; |
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$this->namespaceStatements = $namespaceStatements; |
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$this->globalWhitelister = $globalWhitelister; |
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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->hasWhitelistedNode = $this->hasWhitelistedNode($nodes); |
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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 $node): Node |
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{ |
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return ($node instanceof Namespace_) |
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? $this->prefixNamespaceStmt($node) |
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: $node; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function leaveNode(Node $node) |
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{ |
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return ( |
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!$this->hasWhitelistedNode |
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|| $node instanceof Namespace_ |
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|| AppendParentNode::hasParent($node) |
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) ? $node : $this->wrapNamespace($node); |
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} |
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private function prefixNamespaceStmt(Namespace_ $namespace): Node |
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{ |
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$originalNamespace = $namespace; |
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if ($this->shouldPrefixStmt($namespace)) { |
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$originalNamespace = clone_node($namespace); |
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$namespace->name = Name::concat($this->prefix, $namespace->name); |
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} |
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$this->namespaceStatements->add($namespace, $originalNamespace); |
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return $namespace; |
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} |
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private function wrapNamespace(Node $node): Node |
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{ |
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if ($this->isWhitelistedNode($node)) { |
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return new Namespace_(new Node\Name($this->prefix), [$node]); |
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} |
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// Anything else needs to be wrapped with global namespace. |
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return new Namespace_(null, [$node]); |
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} |
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/** |
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* @param Node[] $nodes |
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* |
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* @return bool |
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*/ |
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private function hasWhitelistedNode(array $nodes): bool |
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{ |
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foreach ($nodes as $node) { |
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if ($this->isWhitelistedNode($node)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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private function isWhitelistedNode(Node $node) |
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{ |
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if (($node instanceof Class_ || $node instanceof Interface_) |
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&& ($this->globalWhitelister)($node->name) |
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) { |
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return true; |
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} |
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// Check nodes in the global namespaces. |
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if ($node instanceof Namespace_ && null === $node->name) { |
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foreach ($node->stmts as $statement) { |
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if ($this->isWhitelistedNode($statement)) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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private function shouldPrefixStmt(Namespace_ $namespace): bool |
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{ |
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if (null !== $namespace->name && $this->prefix !== $namespace->name->getFirst()) { |
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return true; |
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} |
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if (null === $namespace->name && $this->hasWhitelistedNode([$namespace])) { |
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return true; |
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} |
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return false; |
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} |
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} |
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