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<?php |
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namespace ComposerRequireChecker\NodeVisitor; |
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use PhpParser\Node; |
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use PhpParser\NodeVisitorAbstract; |
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final class UsedSymbolCollector extends NodeVisitorAbstract |
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{ |
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/** |
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* @var mixed[] |
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*/ |
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private $collectedSymbols = []; |
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public function __construct() |
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{ |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getCollectedSymbols() : array |
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{ |
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return array_keys($this->collectedSymbols); |
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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->collectedSymbols = []; |
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return parent::beforeTraverse($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 $node) |
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{ |
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$this->recordExtendsUsage($node); |
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$this->recordImplementsUsage($node); |
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$this->recordClassExpressionUsage($node); |
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$this->recordCatchUsage($node); |
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$this->recordFunctionCallUsage($node); |
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$this->recordFunctionParameterTypesUsage($node); |
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$this->recordFunctionReturnTypeUsage($node); |
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$this->recordConstantFetchUsage($node); |
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$this->recordTraitUsage($node); |
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return parent::enterNode($node); |
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} |
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private function recordExtendsUsage(Node $node) |
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{ |
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if ($node instanceof Node\Stmt\Class_) { |
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array_map([$this, 'recordUsageOf'], array_filter([$node->extends])); |
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} |
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if ($node instanceof Node\Stmt\Interface_) { |
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array_map([$this, 'recordUsageOf'], array_filter($node->extends)); |
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} |
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} |
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private function recordImplementsUsage(Node $node) |
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{ |
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if ($node instanceof Node\Stmt\Class_) { |
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array_map([$this, 'recordUsageOf'], $node->implements); |
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} |
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} |
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private function recordClassExpressionUsage(Node $node) |
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{ |
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if ( |
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( |
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$node instanceof Node\Expr\StaticCall |
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|| $node instanceof Node\Expr\StaticPropertyFetch |
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|| $node instanceof Node\Expr\ClassConstFetch |
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|| $node instanceof Node\Expr\New_ |
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|| $node instanceof Node\Expr\Instanceof_ |
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) |
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&& ($nodeClass = $node->class) |
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&& $nodeClass instanceof Node\Name |
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) { |
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$this->recordUsageOf($nodeClass); |
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} |
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} |
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private function recordCatchUsage(Node $node) |
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{ |
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if ($node instanceof Node\Stmt\Catch_) { |
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$this->recordUsageOf($node->type); |
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} |
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} |
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private function recordFunctionCallUsage(Node $node) |
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{ |
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if ( |
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$node instanceof Node\Expr\FuncCall |
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&& ($nodeName = $node->name) |
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&& $nodeName instanceof Node\Name |
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) { |
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$this->recordUsageOf($nodeName); |
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} |
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} |
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private function recordFunctionParameterTypesUsage(Node $node) |
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{ |
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if ($node instanceof Node\Stmt\Function_ |
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|| $node instanceof Node\Stmt\ClassMethod |
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) { |
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foreach ($node->getParams() as $param) { |
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if ($param->type instanceof Node\Name) { |
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$this->recordUsageOf($param->type); |
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} |
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if (is_string($param->type)) { |
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$this->recordUsageOfByString($param->type); |
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} |
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} |
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} |
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} |
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private function recordFunctionReturnTypeUsage(Node $node) |
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{ |
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if ($node instanceof Node\Stmt\Function_ |
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|| $node instanceof Node\Stmt\ClassMethod |
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) { |
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if ($node->getReturnType() instanceof Node\Name) { |
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$this->recordUsageOf($node->getReturnType()); |
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} |
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if (is_string($node->getReturnType())) { |
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$this->recordUsageOfByString($node->getReturnType()); |
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} |
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} |
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} |
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private function recordConstantFetchUsage(Node $node) |
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{ |
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if ($node instanceof Node\Expr\ConstFetch) { |
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$this->recordUsageOf($node->name); |
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} |
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} |
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private function recordTraitUsage(Node $node) |
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{ |
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if (! $node instanceof Node\Stmt\TraitUse) { |
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return; |
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} |
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array_map([$this, 'recordUsageOf'], $node->traits); |
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foreach ($node->adaptations as $adaptation) { |
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$this->recordUsageOf($adaptation->trait); |
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if ($adaptation instanceof Node\Stmt\TraitUseAdaptation\Precedence) { |
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array_map([$this, 'recordUsageOf'], $adaptation->insteadof); |
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} |
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} |
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} |
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/** |
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* @param Node\Name $symbol |
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* |
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* @return void |
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*/ |
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private function recordUsageOf(Node\Name $symbol) |
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{ |
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$this->collectedSymbols[(string) $symbol] = $symbol; |
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} |
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/** |
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* @param Node\Name $symbol |
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* |
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* @return void |
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*/ |
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private function recordUsageOfByString(string $symbol) |
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{ |
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$this->collectedSymbols[$symbol] = $symbol; |
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} |
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} |
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maglnet /
ComposerRequireChecker
