private function getParser()
{
if (!isset($this->parser)) {
$parserFactory = new ParserFactory();
$this->parser = $parserFactory->createParser();
}
return $this->parser;
}
/**
* CodeCleaner constructor.
*
* @param Parser $parser A PhpParser Parser instance. One will be created if not explicitly supplied.
* @param Printer $printer A PhpParser Printer instance. One will be created if not explicitly supplied.
* @param NodeTraverser $traverser A PhpParser NodeTraverser instance. One will be created if not explicitly supplied.
*/
public function __construct(Parser $parser = null, Printer $printer = null, NodeTraverser $traverser = null)
{
if ($parser === null) {
$parserFactory = new ParserFactory();
$parser = $parserFactory->createParser();
}
$this->parser = $parser;
$this->printer = $printer ?: new Printer();
$this->traverser = $traverser ?: new NodeTraverser();
foreach ($this->getDefaultPasses() as $pass) {
$this->traverser->addVisitor($pass);
}
}
/**
* {@inheritdoc}
*/
protected function configure()
{
$definition = array(new InputArgument('code', InputArgument::REQUIRED, 'PHP code to parse.'), new InputOption('depth', '', InputOption::VALUE_REQUIRED, 'Depth to parse', 10));
if ($this->parserFactory->hasKindsSupport()) {
$msg = 'One of PhpParser\\ParserFactory constants: ' . implode(', ', ParserFactory::getPossibleKinds()) . " (default is based on current interpreter's version)";
$defaultKind = $this->parserFactory->getDefaultKind();
$definition[] = new InputOption('kind', '', InputOption::VALUE_REQUIRED, $msg, $defaultKind);
}
$this->setName('parse')->setDefinition($definition)->setDescription('Parse PHP code and show the abstract syntax tree.')->setHelp(<<<'HELP'
Parse PHP code and show the abstract syntax tree.
This command is used in the development of PsySH. Given a string of PHP code,
it pretty-prints the PHP Parser parse tree.
See https://github.com/nikic/PHP-Parser
It prolly won't be super useful for most of you, but it's here if you want to play.
HELP
);
}