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Revision Autor Zeilennr. Zeile
148 lars 1 
<?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;
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/**
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 * The Psy Shell's execution scope.
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 */
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class ExecutionClosure
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{
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    const NOOP_INPUT = 'return null;';
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    private $closure;
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    /**
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     * @param Shell $__psysh__
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     */
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    public function __construct(Shell $__psysh__)
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    {
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        $this->setClosure($__psysh__, function () use ($__psysh__) {
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            try {
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                // Restore execution scope variables
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                \extract($__psysh__->getScopeVariables(false));
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                // Buffer stdout; we'll need it later
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                \ob_start([$__psysh__, 'writeStdout'], 1);
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                // Convert all errors to exceptions
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                \set_error_handler([$__psysh__, 'handleError']);
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                // Evaluate the current code buffer
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                $_ = eval($__psysh__->onExecute($__psysh__->flushCode() ?: self::NOOP_INPUT));
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            } catch (\Throwable $_e) {
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                // Clean up on our way out.
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                if (\ob_get_level() > 0) {
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                    \ob_end_clean();
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                }
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                throw $_e;
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            } finally {
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                // Won't be needing this anymore
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                \restore_error_handler();
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            }
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            // Flush stdout (write to shell output, plus save to magic variable)
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            \ob_end_flush();
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            // Save execution scope variables for next time
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            $__psysh__->setScopeVariables(\get_defined_vars());
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            return $_;
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        });
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    }
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    /**
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     * Set the closure instance.
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     *
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     * @param Shell    $shell
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     * @param \Closure $closure
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     */
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    protected function setClosure(Shell $shell, \Closure $closure)
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    {
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        $that = $shell->getBoundObject();
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        if (\is_object($that)) {
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            $this->closure = $closure->bindTo($that, \get_class($that));
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        } else {
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            $this->closure = $closure->bindTo(null, $shell->getBoundClass());
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        }
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    }
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    /**
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     * Go go gadget closure.
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     *
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     * @return mixed
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     */
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    public function execute()
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    {
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        $closure = $this->closure;
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        return $closure();
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    }
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}