annotate vendor/psy/psysh/src/ExecutionLoopClosure.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents 129ea1e6d783
children
rev   line source
Chris@16 1 <?php
Chris@16 2
Chris@16 3 /*
Chris@16 4 * This file is part of Psy Shell.
Chris@16 5 *
Chris@16 6 * (c) 2012-2018 Justin Hileman
Chris@16 7 *
Chris@16 8 * For the full copyright and license information, please view the LICENSE
Chris@16 9 * file that was distributed with this source code.
Chris@16 10 */
Chris@16 11
Chris@16 12 namespace Psy;
Chris@16 13
Chris@16 14 use Psy\Exception\BreakException;
Chris@16 15 use Psy\Exception\ErrorException;
Chris@16 16 use Psy\Exception\ThrowUpException;
Chris@16 17 use Psy\Exception\TypeErrorException;
Chris@16 18
Chris@16 19 /**
Chris@16 20 * The Psy Shell's execution loop scope.
Chris@16 21 *
Chris@16 22 * @todo Once we're on PHP 5.5, we can switch ExecutionClosure to a generator
Chris@16 23 * and get rid of the duplicate closure implementations :)
Chris@16 24 */
Chris@16 25 class ExecutionLoopClosure extends ExecutionClosure
Chris@16 26 {
Chris@16 27 /**
Chris@16 28 * @param Shell $__psysh__
Chris@16 29 */
Chris@16 30 public function __construct(Shell $__psysh__)
Chris@16 31 {
Chris@16 32 $this->setClosure($__psysh__, function () use ($__psysh__) {
Chris@16 33 // Restore execution scope variables
Chris@17 34 \extract($__psysh__->getScopeVariables(false));
Chris@16 35
Chris@16 36 do {
Chris@16 37 $__psysh__->beforeLoop();
Chris@16 38
Chris@16 39 try {
Chris@16 40 $__psysh__->getInput();
Chris@16 41
Chris@16 42 try {
Chris@17 43 // Pull in any new execution scope variables
Chris@17 44 if ($__psysh__->getLastExecSuccess()) {
Chris@17 45 \extract($__psysh__->getScopeVariablesDiff(\get_defined_vars()));
Chris@17 46 }
Chris@17 47
Chris@16 48 // Buffer stdout; we'll need it later
Chris@17 49 \ob_start([$__psysh__, 'writeStdout'], 1);
Chris@16 50
Chris@16 51 // Convert all errors to exceptions
Chris@17 52 \set_error_handler([$__psysh__, 'handleError']);
Chris@16 53
Chris@16 54 // Evaluate the current code buffer
Chris@16 55 $_ = eval($__psysh__->onExecute($__psysh__->flushCode() ?: ExecutionClosure::NOOP_INPUT));
Chris@16 56 } catch (\Throwable $_e) {
Chris@16 57 // Clean up on our way out.
Chris@17 58 \restore_error_handler();
Chris@17 59 if (\ob_get_level() > 0) {
Chris@17 60 \ob_end_clean();
Chris@16 61 }
Chris@16 62
Chris@16 63 throw $_e;
Chris@16 64 } catch (\Exception $_e) {
Chris@16 65 // Clean up on our way out.
Chris@17 66 \restore_error_handler();
Chris@17 67 if (\ob_get_level() > 0) {
Chris@17 68 \ob_end_clean();
Chris@16 69 }
Chris@16 70
Chris@16 71 throw $_e;
Chris@16 72 }
Chris@16 73
Chris@16 74 // Won't be needing this anymore
Chris@17 75 \restore_error_handler();
Chris@16 76
Chris@16 77 // Flush stdout (write to shell output, plus save to magic variable)
Chris@17 78 \ob_end_flush();
Chris@16 79
Chris@16 80 // Save execution scope variables for next time
Chris@17 81 $__psysh__->setScopeVariables(\get_defined_vars());
Chris@16 82
Chris@16 83 $__psysh__->writeReturnValue($_);
Chris@16 84 } catch (BreakException $_e) {
Chris@16 85 $__psysh__->writeException($_e);
Chris@16 86
Chris@16 87 return;
Chris@16 88 } catch (ThrowUpException $_e) {
Chris@16 89 $__psysh__->writeException($_e);
Chris@16 90
Chris@16 91 throw $_e;
Chris@16 92 } catch (\TypeError $_e) {
Chris@16 93 $__psysh__->writeException(TypeErrorException::fromTypeError($_e));
Chris@16 94 } catch (\Error $_e) {
Chris@16 95 $__psysh__->writeException(ErrorException::fromError($_e));
Chris@16 96 } catch (\Exception $_e) {
Chris@16 97 $__psysh__->writeException($_e);
Chris@16 98 }
Chris@16 99
Chris@16 100 $__psysh__->afterLoop();
Chris@16 101 } while (true);
Chris@16 102 });
Chris@16 103 }
Chris@16 104 }