127 lines
3.4 KiB
PHP
127 lines
3.4 KiB
PHP
<?php
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/*
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* This file is part of Psy Shell.
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*
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* (c) 2012-2023 Justin Hileman
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Psy\Command;
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use PhpParser\Node\Arg;
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use PhpParser\Node\Expr\New_;
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use PhpParser\Node\Expr\Throw_;
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use PhpParser\Node\Expr\Variable;
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use PhpParser\Node\Name\FullyQualified as FullyQualifiedName;
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use PhpParser\Node\Scalar\String_;
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use PhpParser\Node\Stmt\Expression;
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use PhpParser\PrettyPrinter\Standard as Printer;
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use Psy\Exception\ThrowUpException;
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use Psy\Input\CodeArgument;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Output\OutputInterface;
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/**
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* Throw an exception or error out of the Psy Shell.
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*/
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class ThrowUpCommand extends Command
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{
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private $parser;
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private $printer;
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/**
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* {@inheritdoc}
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*/
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public function __construct($name = null)
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{
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$this->parser = new CodeArgumentParser();
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$this->printer = new Printer();
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parent::__construct($name);
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}
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/**
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* {@inheritdoc}
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*/
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protected function configure()
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{
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$this
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->setName('throw-up')
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->setDefinition([
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new CodeArgument('exception', CodeArgument::OPTIONAL, 'Exception or Error to throw.'),
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])
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->setDescription('Throw an exception or error out of the Psy Shell.')
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->setHelp(
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<<<'HELP'
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Throws an exception or error out of the current the Psy Shell instance.
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By default it throws the most recent exception.
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e.g.
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<return>>>> throw-up</return>
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<return>>>> throw-up $e</return>
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<return>>>> throw-up new Exception('WHEEEEEE!')</return>
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<return>>>> throw-up "bye!"</return>
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HELP
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);
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}
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/**
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* {@inheritdoc}
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*
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* @return int 0 if everything went fine, or an exit code
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*
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* @throws \InvalidArgumentException if there is no exception to throw
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*/
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protected function execute(InputInterface $input, OutputInterface $output): int
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{
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$args = $this->prepareArgs($input->getArgument('exception'));
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$throwStmt = new Expression(new Throw_(new New_(new FullyQualifiedName(ThrowUpException::class), $args)));
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$throwCode = $this->printer->prettyPrint([$throwStmt]);
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$shell = $this->getApplication();
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$shell->addCode($throwCode, !$shell->hasCode());
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return 0;
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}
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/**
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* Parse the supplied command argument.
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*
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* If no argument was given, this falls back to `$_e`
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*
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* @throws \InvalidArgumentException if there is no exception to throw
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*
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* @param string $code
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*
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* @return Arg[]
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*/
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private function prepareArgs(?string $code = null): array
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{
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if (!$code) {
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// Default to last exception if nothing else was supplied
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return [new Arg(new Variable('_e'))];
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}
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$nodes = $this->parser->parse($code);
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if (\count($nodes) !== 1) {
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throw new \InvalidArgumentException('No idea how to throw this');
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}
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$node = $nodes[0];
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$expr = $node->expr;
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$args = [new Arg($expr, false, false, $node->getAttributes())];
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// Allow throwing via a string, e.g. `throw-up "SUP"`
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if ($expr instanceof String_) {
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return [new New_(new FullyQualifiedName(\Exception::class), $args)];
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}
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return $args;
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}
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}
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