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<?php declare(strict_types=1); |
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/** |
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* PHP version 7.4 |
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* |
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* This source file is subject to the license that is bundled with this package in the file LICENSE. |
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*/ |
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namespace PhUml\Code\Methods; |
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use PhUml\Code\Variables\TypeDeclaration; |
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/** |
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* It extracts the return type and parameters type of a method |
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*/ |
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final class MethodDocBlock |
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{ |
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private const RETURN_EXPRESSION = '/@return\s*([\w]+(\[\])?)/'; |
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private const PARAMETER_EXPRESSION = '/@param\s*([\w]+(?:\[\])?)\s*(\$[\w]+)/'; |
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private TypeDeclaration $returnType; |
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/** @var TypeDeclaration[] */ |
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private array $parametersTypes = []; |
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public function __construct(?string $comment) |
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{ |
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$this->extractParametersTypes($comment); |
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$this->extractReturnType($comment); |
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} |
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public function hasReturnType(): bool |
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{ |
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return $this->returnType->isPresent(); |
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} |
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public function returnType(): TypeDeclaration |
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{ |
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return $this->returnType; |
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} |
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public function hasTypeOfParameter(string $parameterName): bool |
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{ |
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return isset($this->parametersTypes[$parameterName]); |
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} |
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public function typeOfParameter(string $parameterName): TypeDeclaration |
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{ |
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return $this->parametersTypes[$parameterName] ?? TypeDeclaration::absent(); |
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} |
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private function extractReturnType(?string $comment): void |
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{ |
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if (preg_match(self::RETURN_EXPRESSION, (string) $comment, $matches) === 1) { |
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$this->returnType = TypeDeclaration::from(trim($matches[1])); |
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return; |
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} |
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$this->returnType = TypeDeclaration::absent(); |
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} |
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private function extractParametersTypes(?string $comment): void |
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{ |
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if (preg_match_all(self::PARAMETER_EXPRESSION, (string) $comment, $matches) < 1) { |
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$this->parametersTypes = []; |
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return; |
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} |
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foreach ($matches[0] as $typeHint) { |
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$this->extractDeclarationFrom($typeHint); |
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} |
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} |
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private function extractDeclarationFrom(string $typeHint): void |
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{ |
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if (preg_match(self::PARAMETER_EXPRESSION, $typeHint, $match) === 1) { |
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[$_, $type, $parameterName] = $match; |
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$this->parametersTypes[$parameterName] = TypeDeclaration::from($type); |
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} |
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} |
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} |
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MontealegreLuis /
phuml
