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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\Specs\Builder; |
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use Pinepain\JsSandbox\Specs\Builder\Exceptions\FunctionSpecBuilderException; |
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use Pinepain\JsSandbox\Specs\FunctionSpec; |
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use Pinepain\JsSandbox\Specs\FunctionSpecInterface; |
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use Pinepain\JsSandbox\Specs\ParametersList; |
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use Pinepain\JsSandbox\Specs\ParametersListInterface; |
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use Pinepain\JsSandbox\Specs\ReturnSpec\AnyReturnSpec; |
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use Pinepain\JsSandbox\Specs\ReturnSpec\ReturnSpecInterface; |
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use Pinepain\JsSandbox\Specs\ReturnSpec\VoidReturnSpec; |
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use Pinepain\JsSandbox\Specs\ThrowSpec\EchoThrowSpec; |
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use Pinepain\JsSandbox\Specs\ThrowSpec\ThrowSpecList; |
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use Pinepain\JsSandbox\Specs\ThrowSpec\ThrowSpecListInterface; |
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class FunctionSpecBuilder implements FunctionSpecBuilderInterface |
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{ |
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/** |
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* @var ParameterSpecBuilderInterface |
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*/ |
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private $builder; |
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/** |
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* @var array |
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*/ |
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private $return_types; |
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/** |
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* @var string |
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*/ |
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private $default_return_type = 'any'; |
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public function __construct(ParameterSpecBuilderInterface $builder) |
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{ |
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$this->builder = $builder; |
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$this->return_types = [ |
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'any' => new AnyReturnSpec(), |
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'void' => new VoidReturnSpec(), |
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]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function build(string $definition): FunctionSpecInterface |
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{ |
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$definition = trim($definition); |
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if (!$definition) { |
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throw new FunctionSpecBuilderException('Definition must be non-empty string'); |
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} |
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if (preg_match('/^(?<return>\w+\b)?\s*(?<needs_context>\!)?\s*\(\s*(?<params>([^,]+)(?:\s*,\s*[^,]+)*)?\s*\)\s*(?<throws>(\\\\?[a-z][\w\\\\]+)(?:\s*\|\s*(?-1))*)?\s*$/i', $definition, $matches)) { |
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$needs_context = isset($matches['needs_context']) && $matches['needs_context']; |
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$params = $this->getParametersList($matches['params'] ?? ''); |
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$return = $this->getReturnType(($matches['return'] ?? '') ?: $this->default_return_type); |
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$throws = $this->getThrowsList($matches['throws'] ?? ''); |
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return new FunctionSpec($params, $throws, $return, $needs_context); |
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} |
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throw new FunctionSpecBuilderException("Unable to parse definition: '{$definition}'"); |
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} |
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protected function getReturnType(string $definition): ReturnSpecInterface |
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{ |
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if (!isset($this->return_types[$definition])) { |
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throw new FunctionSpecBuilderException("Invalid return type: '{$definition}'"); |
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} |
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return $this->return_types[$definition]; |
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} |
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protected function getParametersList(string $definition): ParametersListInterface |
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{ |
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$params = []; |
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if ($definition) { |
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$raw_params_definition = explode(',', $definition); |
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foreach ($raw_params_definition as $param_definition) { |
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$params[] = $this->builder->build(trim($param_definition)); |
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} |
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} |
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return new ParametersList(...$params); |
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} |
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protected function getThrowsList(string $definition): ThrowSpecListInterface |
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{ |
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$specs = []; |
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if ($definition) { |
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$classes = array_filter(array_map('\trim', explode('|', $definition))); |
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foreach ($classes as $class) { |
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$specs[] = new EchoThrowSpec($class); |
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} |
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} |
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return new ThrowSpecList(...$specs); |
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} |
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} |
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pinepain /
js-sandbox
