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parser = (new ParserFactory())->createParser();
parent::__construct($name);
}
/**
* ContextAware interface.
*
* @param Context $context
*/
public function setContext(Context $context)
{
$this->context = $context;
}
/**
* PresenterAware interface.
*
* @param Presenter $presenter
*/
public function setPresenter(Presenter $presenter)
{
$this->presenter = clone $presenter;
$this->presenter->addCasters([
Node::class => function (Node $node, array $a) {
$a = [
Caster::PREFIX_VIRTUAL.'type' => $node->getType(),
Caster::PREFIX_VIRTUAL.'attributes' => $node->getAttributes(),
];
foreach ($node->getSubNodeNames() as $name) {
$a[Caster::PREFIX_VIRTUAL.$name] = $node->$name;
}
return $a;
},
]);
}
/**
* {@inheritdoc}
*/
protected function configure(): void
{
$this
->setName('parse')
->setDefinition([
new CodeArgument('code', CodeArgument::REQUIRED, 'PHP code to parse.'),
new InputOption('depth', '', InputOption::VALUE_REQUIRED, 'Depth to parse.', 10),
])
->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
);
}
/**
* {@inheritdoc}
*/
protected function execute(InputInterface $input, OutputInterface $output): int
{
$code = $input->getArgument('code');
$depth = $input->getOption('depth');
if (!\preg_match('/^\s*<\\?/', $code)) {
$code = 'parser->parse($code);
} catch (PhpParserError $e) {
if ($this->parseErrorIsEOF($e)) {
$nodes = $this->parser->parse($code.';');
} else {
throw $e;
}
}
$this->shellOutput($output)->page($this->presenter->present($nodes, $depth, Presenter::RAW), OutputInterface::OUTPUT_RAW);
$this->context->setReturnValue($nodes);
return 0;
}
private function parseErrorIsEOF(PhpParserError $e): bool
{
$msg = $e->getRawMessage();
return ($msg === 'Unexpected token EOF') || (\strpos($msg, 'Syntax error, unexpected EOF') !== false);
}
}