Developer
<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2023 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\Command;
use PhpParser\Node;
use Psy\Context;
use Psy\ContextAware;
use Psy\Input\CodeArgument;
use Psy\ParserFactory;
use Psy\VarDumper\Presenter;
use Psy\VarDumper\PresenterAware;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\VarDumper\Caster\Caster;
/**
* Parse PHP code and show the abstract syntax tree.
*/
class ParseCommand extends Command implements ContextAware, PresenterAware
{
/**
* Context instance (for ContextAware interface).
*
* @var Context
*/
protected $context;
private $presenter;
private $parser;
/**
* {@inheritdoc}
*/
public function __construct($name = null)
{
$this->parser = (new ParserFactory())->createParser();
parent::__construct($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()
{
$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');
$parserKind = $input->getOption('kind');
$depth = $input->getOption('depth');
$nodes = $this->parser->parse($code);
$output->page($this->presenter->present($nodes, $depth));
$this->context->setReturnValue($nodes);
return 0;
}
}
Developer
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