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Edit File : ThrowUpCommand.php \| Size : 4.42 KB
<?php /* * This file is part of Psy Shell. * * (c) 2012-2018 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\Arg; use PhpParser\Node\Expr\New_; use PhpParser\Node\Expr\StaticCall; use PhpParser\Node\Expr\Variable; use PhpParser\Node\Name\FullyQualified as FullyQualifiedName; use PhpParser\Node\Scalar\String_; use PhpParser\Node\Stmt\Throw_; use PhpParser\PrettyPrinter\Standard as Printer; use Psy\Context; use Psy\ContextAware; use Psy\Input\CodeArgument; use Psy\ParserFactory; use Symfony\Component\Console\Input\InputInterface; use Symfony\Component\Console\Output\OutputInterface; /* * Throw an exception or error out of the Psy Shell. / class ThrowUpCommand extends Command implements ContextAware { const THROW_CLASS = 'Psy\Exception\ThrowUpException'; private $parser; private $printer; /* * Context instance (for ContextAware interface). * * @var Context / protected $context; /* * {@inheritdoc} / public function __construct($name = null) { $parserFactory = new ParserFactory(); $this->parser = $parserFactory->createParser(); $this->printer = new Printer(); parent::__construct($name); } /* * ContextAware interface. * * @param Context $context / public function setContext(Context $context) { $this->context = $context; } /* * {@inheritdoc} / protected function configure() { $this ->setName('throw-up') ->setDefinition([ new CodeArgument('exception', CodeArgument::OPTIONAL, 'Exception or Error to throw.'), ]) ->setDescription('Throw an exception or error out of the Psy Shell.') ->setHelp( <<<'HELP' Throws an exception or error out of the current the Psy Shell instance. By default it throws the most recent exception. e.g. <return>>>> throw-up</return> <return>>>> throw-up $e</return> <return>>>> throw-up new Exception('WHEEEEEE!')</return> <return>>>> throw-up "bye!"</return> HELP ); } /* * {@inheritdoc} * * @throws InvalidArgumentException if there is no exception to throw / protected function execute(InputInterface $input, OutputInterface $output) { $args = $this->prepareArgs($input->getArgument('exception')); $throwStmt = new Throw_(new StaticCall(new FullyQualifiedName(self::THROW_CLASS), 'fromThrowable', $args)); $throwCode = $this->printer->prettyPrint([$throwStmt]); $shell = $this->getApplication(); $shell->addCode($throwCode, !$shell->hasCode()); } /* * Parse the supplied command argument. * * If no argument was given, this falls back to `$_e` * * @throws InvalidArgumentException if there is no exception to throw * * @param string $code * * @return Arg[] / private function prepareArgs($code = null) { if (!$code) { // Default to last exception if nothing else was supplied return [new Arg(new Variable('_e'))]; } if (\strpos('<?', $code) === false) { $code = '<?php ' . $code; } $nodes = $this->parse($code); if (\count($nodes) !== 1) { throw new \InvalidArgumentException('No idea how to throw this'); } $node = $nodes[0]; // Make this work for PHP Parser v3.x $expr = isset($node->expr) ? $node->expr : $node; $args = [new Arg($expr, false, false, $node->getAttributes())]; // Allow throwing via a string, e.g. `throw-up "SUP"` if ($expr instanceof String_) { return [new New_(new FullyQualifiedName('Exception'), $args)]; } return $args; } /* * Lex and parse a string of code into statements. * * @param string $code * * @return array Statements */ private function parse($code) { try { return $this->parser->parse($code); } catch (\PhpParser\Error $e) { if (\strpos($e->getMessage(), 'unexpected EOF') === false) { throw $e; } // If we got an unexpected EOF, let's try it again with a semicolon. return $this->parser->parse($code . ';'); } } } Back

Edit File : ThrowUpCommand.php | Size : 4.42 KB

<?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2018 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\Arg;
use PhpParser\Node\Expr\New_;
use PhpParser\Node\Expr\StaticCall;
use PhpParser\Node\Expr\Variable;
use PhpParser\Node\Name\FullyQualified as FullyQualifiedName;
use PhpParser\Node\Scalar\String_;
use PhpParser\Node\Stmt\Throw_;
use PhpParser\PrettyPrinter\Standard as Printer;
use Psy\Context;
use Psy\ContextAware;
use Psy\Input\CodeArgument;
use Psy\ParserFactory;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Throw an exception or error out of the Psy Shell.
 */
class ThrowUpCommand extends Command implements ContextAware
{
    const THROW_CLASS = 'Psy\Exception\ThrowUpException';

private $parser;
    private $printer;

/**
     * Context instance (for ContextAware interface).
     *
     * @var Context
     */
    protected $context;

/**
     * {@inheritdoc}
     */
    public function __construct($name = null)
    {
        $parserFactory = new ParserFactory();

$this->parser  = $parserFactory->createParser();
        $this->printer = new Printer();

parent::__construct($name);
    }

/**
     * ContextAware interface.
     *
     * @param Context $context
     */
    public function setContext(Context $context)
    {
        $this->context = $context;
    }

/**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setName('throw-up')
            ->setDefinition([
                new CodeArgument('exception', CodeArgument::OPTIONAL, 'Exception or Error to throw.'),
            ])
            ->setDescription('Throw an exception or error out of the Psy Shell.')
            ->setHelp(
                <<<'HELP'
Throws an exception or error out of the current the Psy Shell instance.

By default it throws the most recent exception.

e.g.
<return>>>> throw-up</return>
<return>>>> throw-up $e</return>
<return>>>> throw-up new Exception('WHEEEEEE!')</return>
<return>>>> throw-up "bye!"</return>
HELP
            );
    }

/**
     * {@inheritdoc}
     *
     * @throws InvalidArgumentException if there is no exception to throw
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $args = $this->prepareArgs($input->getArgument('exception'));
        $throwStmt = new Throw_(new StaticCall(new FullyQualifiedName(self::THROW_CLASS), 'fromThrowable', $args));
        $throwCode = $this->printer->prettyPrint([$throwStmt]);

$shell = $this->getApplication();
        $shell->addCode($throwCode, !$shell->hasCode());
    }

/**
     * Parse the supplied command argument.
     *
     * If no argument was given, this falls back to `$_e`
     *
     * @throws InvalidArgumentException if there is no exception to throw
     *
     * @param string $code
     *
     * @return Arg[]
     */
    private function prepareArgs($code = null)
    {
        if (!$code) {
            // Default to last exception if nothing else was supplied
            return [new Arg(new Variable('_e'))];
        }

if (\strpos('<?', $code) === false) {
            $code = '<?php ' . $code;
        }

$nodes = $this->parse($code);
        if (\count($nodes) !== 1) {
            throw new \InvalidArgumentException('No idea how to throw this');
        }

$node = $nodes[0];

// Make this work for PHP Parser v3.x
        $expr = isset($node->expr) ? $node->expr : $node;

$args = [new Arg($expr, false, false, $node->getAttributes())];

// Allow throwing via a string, e.g. `throw-up "SUP"`
        if ($expr instanceof String_) {
            return [new New_(new FullyQualifiedName('Exception'), $args)];
        }

return $args;
    }

/**
     * Lex and parse a string of code into statements.
     *
     * @param string $code
     *
     * @return array Statements
     */
    private function parse($code)
    {
        try {
            return $this->parser->parse($code);
        } catch (\PhpParser\Error $e) {
            if (\strpos($e->getMessage(), 'unexpected EOF') === false) {
                throw $e;
            }

// If we got an unexpected EOF, let's try it again with a semicolon.
            return $this->parser->parse($code . ';');
        }
    }
}

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