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<?php declare(strict_types=1); |
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/* |
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* This file is part of the pinepain/js-sandbox PHP library. |
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* |
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* Copyright (c) 2016-2017 Bogdan Padalko <[email protected]> |
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* |
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* Licensed under the MIT license: http://opensource.org/licenses/MIT |
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* |
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* For the full copyright and license information, please view the |
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* LICENSE file that was distributed with this source or visit |
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* http://opensource.org/licenses/MIT |
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*/ |
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namespace Pinepain\JsSandbox\Wrappers\FunctionComponents; |
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use Pinepain\JsSandbox\Specs\FunctionSpecInterface; |
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use Pinepain\JsSandbox\Wrappers\FunctionComponents\Runtime\ColdExecutionContextInterface; |
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use Throwable; |
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use V8\FunctionCallbackInfo; |
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class FunctionCallHandler implements FunctionCallHandlerInterface |
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{ |
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/** |
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* @var ArgumentsExtractorInterface |
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*/ |
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private $arguments_extractor; |
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/** |
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* @var FunctionExceptionHandlerInterface |
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*/ |
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private $exception_handler; |
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/** |
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* @var ReturnValueSetterInterface |
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*/ |
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private $return_setter; |
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/** |
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* @param ArgumentsExtractorInterface $arguments_extractor |
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* @param FunctionExceptionHandlerInterface $exception_handler |
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* @param ReturnValueSetterInterface $return_setter |
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*/ |
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public function __construct(ArgumentsExtractorInterface $arguments_extractor, FunctionExceptionHandlerInterface $exception_handler, ReturnValueSetterInterface $return_setter) |
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{ |
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$this->arguments_extractor = $arguments_extractor; |
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$this->exception_handler = $exception_handler; |
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$this->return_setter = $return_setter; |
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} |
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public function wrap(callable $callback, FunctionSpecInterface $spec, ColdExecutionContextInterface $cold_execution_context) |
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{ |
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return function (FunctionCallbackInfo $args) use ($callback, $spec, $cold_execution_context) { |
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$arguments = $this->arguments_extractor->extract($args, $spec); |
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if ($spec->needsExecutionContext()) { |
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// Execution context is simple and abstract way to write advanced functions which relies on existent |
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// abstraction level but at the same time allow manipulate on a lower level, e.g. examine current |
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// context, building rich v8 native objects, but not limited to. |
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$execution_context = $cold_execution_context->warm($args, $spec); |
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array_unshift($arguments, $execution_context); |
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} |
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try { |
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$ret = $callback(...$arguments); |
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} catch (Throwable $e) { |
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$this->exception_handler->handle($args->getIsolate(), $args->getContext(), $e, $spec->getExceptions()); |
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// Handling exception means process thrown exception in some way, e.g. cleanup message, hide or add details |
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// and then throw new exception that inherits SandboxException. If it doesn't happened, we re-throw original |
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// exception |
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throw $e; |
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} |
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if (null !== $ret || !$spec->getReturn()->prefersUndefined()) { |
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$this->return_setter->set($cold_execution_context->getWrapper(), $args, $spec, $ret); |
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} |
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}; |
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} |
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} |
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pinepain /
js-sandbox
