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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\PhpParser; |
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use PhpParser\Node; |
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use PhpParser\Node\Name; |
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use PhpParser\Node\Stmt\Declare_; |
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use PhpParser\Node\Stmt\GroupUse; |
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use PhpParser\Node\Stmt\InlineHTML; |
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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 as PhpParserNodeTraverser; |
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use function array_slice; |
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use function array_values; |
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use function count; |
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/** |
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* @private |
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*/ |
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final class NodeTraverser extends PhpParserNodeTraverser |
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{ |
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private $prefix; |
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public function __construct(string $prefix) |
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{ |
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parent::__construct(); |
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$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 traverse(array $nodes): array |
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{ |
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$nodes = $this->wrapInNamespace($nodes); |
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$nodes = $this->replaceGroupUseStatements($nodes); |
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return parent::traverse($nodes); |
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} |
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/** |
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* Wrap the statements in a namespace when necessary:. |
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* |
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* ```php |
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* #!/usr/bin/env php |
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* <?php declare(strict_types=1); |
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* |
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* // A small comment |
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* |
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* if (\true) { |
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* echo "yo"; |
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* } |
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* ``` |
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* |
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* Will result in: |
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* |
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* ```php |
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* #!/usr/bin/env php |
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* <?php declare(strict_types=1); |
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* |
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* // A small comment |
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* |
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* namespace { |
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* if (\true) { |
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* echo "yo"; |
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* } |
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* } |
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* ``` |
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* |
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* @param Node[] $nodes |
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* |
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* @return Node[] |
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*/ |
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private function wrapInNamespace(array $nodes): array |
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{ |
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if ([] === $nodes) { |
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return $nodes; |
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} |
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$nodes = array_values($nodes); |
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$firstRealStatementIndex = 0; |
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$realStatements = []; |
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foreach ($nodes as $i => $node) { |
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if ($node instanceof Declare_ || $node instanceof InlineHTML) { |
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continue; |
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} |
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$firstRealStatementIndex = $i; |
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$realStatements = array_slice($nodes, $i); |
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break; |
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} |
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$firstRealStatement = current($realStatements); |
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if (false !== $firstRealStatement && false === ($firstRealStatement instanceof Namespace_)) { |
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$wrappedStatements = new Namespace_(null, $realStatements); |
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array_splice($nodes, $firstRealStatementIndex, count($realStatements), [$wrappedStatements]); |
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} |
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return $nodes; |
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} |
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/** |
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* @param Node[] $nodes |
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* |
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* @return Node[] |
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*/ |
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private function replaceGroupUseStatements(array $nodes): array |
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{ |
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foreach ($nodes as $node) { |
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if (false === ($node instanceof Namespace_)) { |
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continue; |
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} |
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/** @var Namespace_ $node */ |
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$statements = $node->stmts; |
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$newStatements = []; |
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foreach ($statements as $statement) { |
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if ($statement instanceof GroupUse) { |
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$uses_ = $this->createUses_($statement); |
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array_splice($newStatements, count($newStatements), 0, $uses_); |
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} else { |
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$newStatements[] = $statement; |
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} |
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} |
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$node->stmts = $newStatements; |
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} |
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return $nodes; |
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} |
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/** |
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* @param GroupUse $node |
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* |
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* @return Use_[] |
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*/ |
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private function createUses_(GroupUse $node): array |
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{ |
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return array_map( |
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static function (UseUse $use) use ($node): Use_ { |
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$newUse = new UseUse( |
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Name::concat($node->prefix, $use->name, $use->name->getAttributes()), |
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$use->alias, |
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$use->type, |
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$use->getAttributes() |
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); |
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return new Use_( |
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[$newUse], |
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$node->type, |
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$node->getAttributes() |
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); |
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}, |
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$node->uses |
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); |
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} |
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} |
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humbug /
php-scoper
