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<?php |
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/** |
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* @author Patsura Dmitry https://github.com/ovr <[email protected]> |
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*/ |
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namespace PHPSA\Analyzer\Helper; |
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use PhpParser\Node; |
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use PhpParser\Node\Expr\FuncCall; |
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use PhpParser\Node\Expr\Yield_; |
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use PhpParser\Node\Stmt\Return_; |
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use PHPSA\Context; |
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trait ResolveExpressionTrait |
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{ |
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/** |
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* @param FuncCall $funcCall |
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* @param Context $context |
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* @return string|bool |
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*/ |
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public function resolveFunctionName(FuncCall $funcCall, Context $context) |
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{ |
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$funcNameCompiledExpression = $context->getExpressionCompiler()->compile($funcCall->name); |
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if ($funcNameCompiledExpression->isString() && $funcNameCompiledExpression->isCorrectValue()) { |
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return $funcNameCompiledExpression->getValue(); |
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} else if (!$funcNameCompiledExpression->isCallable()) { |
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$context->debug( |
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'Unexpected function name type ' . $funcNameCompiledExpression->getTypeName(), |
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$funcCall->name |
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); |
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} |
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return false; |
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} |
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/** |
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* Return \Generator with Yield_ expression(s) |
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* |
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* @param \PhpParser\Node[] $nodes |
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* @return \Generator |
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*/ |
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protected function findYieldExpression(array $nodes) |
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{ |
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return $this->findNode($nodes, Yield_::class); |
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} |
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/** |
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* @param \PhpParser\Node[] $nodes |
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* @return \Generator |
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*/ |
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protected function findReturnStatement(array $nodes) |
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{ |
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return $this->findNode($nodes, Return_::class); |
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} |
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/** |
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* @param array $nodes |
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* @param string $nodeName Class name of Node(s) what We should return |
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* @return \Generator |
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*/ |
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protected function findNode(array $nodes, $nodeName) |
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{ |
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foreach ($this->traverseArray($nodes) as $node) { |
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if (get_class($node) === $nodeName) { |
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yield $node; |
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} |
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} |
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} |
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/** |
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* For the code above |
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* Я атеист, но когда я начинал это писать, только Бог и я понимали, что я делаю |
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* Сейчас остался только Бог |
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* |
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* @param Node $node |
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* @return \Generator |
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* |
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* @todo After move to PHP 7.0+ use yield from |
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*/ |
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protected function traverseNode(Node $node) |
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{ |
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foreach ($node->getSubNodeNames() as $name) { |
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$subNode = &$node->$name; |
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if (is_array($subNode)) { |
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foreach ($this->traverseArray($subNode) as $rNode) { |
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yield $rNode; |
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} |
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} elseif ($subNode instanceof Node) { |
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yield $subNode; |
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foreach ($this->traverseNode($subNode) as $rNode) { |
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yield $rNode; |
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} |
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} |
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} |
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} |
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/** |
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* @param array $nodes |
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* @return \Generator |
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*/ |
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protected function traverseArray(array $nodes) |
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{ |
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foreach ($nodes as $node) { |
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if (is_array($node)) { |
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foreach ($this->traverseArray($node) as $rNode) { |
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yield $rNode; |
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} |
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} elseif ($node instanceof Node) { |
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yield $node; |
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foreach ($this->traverseNode($node) as $rNode) { |
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yield $rNode; |
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} |
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} |
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} |
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} |
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} |
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ovr /
phpsa
Very long variable names usually make code harder to read. It is therefore recommended not to make variable names too verbose.