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vendor/psy/psysh/src/Command/ParseCommand.php

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+<?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;
+    }
+}