<?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;

use Psy\Exception\BreakException;
use Psy\Exception\ThrowUpException;

/**
 * The Psy Shell's execution loop scope.
 *
 * @todo Switch ExecutionClosure to a generator and get rid of the duplicate closure implementations?
 */
class ExecutionLoopClosure extends ExecutionClosure
{
    /**
     * @param Shell $__psysh__
     */
    public function __construct(Shell $__psysh__)
    {
        $this->setClosure($__psysh__, function () use ($__psysh__) {
            // Restore execution scope variables
            \extract($__psysh__->getScopeVariables(false));

            while (true) {
                $__psysh__->beforeLoop();

                try {
                    $__psysh__->getInput();

                    try {
                        // Pull in any new execution scope variables
                        if ($__psysh__->getLastExecSuccess()) {
                            \extract($__psysh__->getScopeVariablesDiff(\get_defined_vars()));
                        }

                        // Buffer stdout; we'll need it later
                        \ob_start([$__psysh__, 'writeStdout'], 1);

                        // Convert all errors to exceptions
                        \set_error_handler([$__psysh__, 'handleError']);

                        // Evaluate the current code buffer
                        $_ = eval($__psysh__->onExecute($__psysh__->flushCode() ?: ExecutionClosure::NOOP_INPUT));
                    } catch (\Throwable $_e) {
                        // Clean up on our way out.
                        if (\ob_get_level() > 0) {
                            \ob_end_clean();
                        }

                        throw $_e;
                    } finally {
                        // Won't be needing this anymore
                        \restore_error_handler();
                    }

                    // Flush stdout (write to shell output, plus save to magic variable)
                    \ob_end_flush();

                    // Save execution scope variables for next time
                    $__psysh__->setScopeVariables(\get_defined_vars());

                    $__psysh__->writeReturnValue($_);
                } catch (BreakException $_e) {
                    $__psysh__->writeException($_e);

                    return;
                } catch (ThrowUpException $_e) {
                    $__psysh__->writeException($_e);

                    throw $_e;
                } catch (\Throwable $_e) {
                    $__psysh__->writeException($_e);
                }

                $__psysh__->afterLoop();
            }
        });
    }
}

• [D] CodeCleaner
• [D] Command
• [D] Exception
• [D] ExecutionLoop
• [D] Formatter
• [D] Input
• [D] Output
• [D] Readline
• [D] Reflection
• [D] Sudo
• [D] TabCompletion
• [D] Util
• [D] VarDumper
• [D] VersionUpdater
• [F] CodeCleaner.php
  Delete
• [F] ConfigPaths.php
  Delete
• [F] Configuration.php
  Delete
• [F] Context.php
  Delete
• [F] ContextAware.php
  Delete
• [F] EnvInterface.php
  Delete
• [F] ExecutionClosure.php
  Delete
• [F] ExecutionLoopClosure.php
  Delete
• [F] functions.php
  Delete
• [F] ParserFactory.php
  Delete
• [F] Shell.php
  Delete
• [F] Sudo.php
  Delete
• [F] SuperglobalsEnv.php
  Delete
• [F] SystemEnv.php
  Delete

Blog Section

Discover the Latest in Digital Payments and NFC Technology

Dive into our blog to explore the cutting-edge trends in digital payments and NFC technology. Stay updated on the innovations that are revolutionizing transactions, boosting security, and making payments quicker and more convenient. Learn how these advancements are shaping the future of financial interactions and driving the global transition towards a cashless world.

The Rise of Contactless Payments:...

In recent years, contactless payments have surged in popularity, driven...

Visit Blog

March 27, 2024

Enhancing Payment Security: The Role...

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational...

Visit Blog

March 27, 2024

The Future of Digital Wallets:...

Digital wallets have fundamentally transformed how we manage money, offering a streamlined, secure, and highly...

Visit Blog

March 27, 2024