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<?php |
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namespace Dgame\Annotation; |
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/** |
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* Class AnnotationParser |
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* @package Dgame\Annotation |
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*/ |
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final class AnnotationParser |
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{ |
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const REGEX = '\s+(.*?)\s*(\$.+?)?\s*\z'; |
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/** |
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* @param string $comment |
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* |
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* @return VariableAnnotation[] |
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*/ |
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public function parseParameterAnnotations(string $comment): array |
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{ |
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return $this->parseAnnotations('param', $comment); |
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} |
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/** |
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* @param string $comment |
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* |
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* @return VariableAnnotation[] |
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*/ |
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public function parseVariableAnnotations(string $comment): array |
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{ |
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return $this->parseAnnotations('var', $comment); |
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} |
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/** |
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* @param string $comment |
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* |
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* @return VariableAnnotation[] |
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*/ |
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public function parsePropertyAnnotations(string $comment): array |
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{ |
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return $this->parseAnnotations('property', $comment); |
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} |
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/** |
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* @param string $annotation |
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* @param string $comment |
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* |
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* @return VariableAnnotation[] |
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*/ |
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private function parseAnnotations(string $annotation, string $comment): array |
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{ |
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$output = []; |
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foreach (preg_split('/\R/m', $comment) as $line) { |
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$result = $this->parseAnnotation($annotation, $line); |
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if ($result !== null) { |
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$output[] = $result; |
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} |
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} |
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return $output; |
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} |
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/** |
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* @param string $annotation |
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* @param string $line |
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* |
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* @return VariableAnnotation|null |
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*/ |
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private function parseAnnotation(string $annotation, string $line): ?VariableAnnotation |
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{ |
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$regex = sprintf('/@%s%s/i', $annotation, self::REGEX); |
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if (preg_match($regex, $line, $matches)) { |
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[$type, $var] = $this->parseAnnotationMatch($matches); |
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return new VariableAnnotation($type, $var); |
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} |
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return null; |
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} |
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/** |
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* @param array $matches |
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* |
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* @return array |
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*/ |
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private function parseAnnotationMatch(array $matches): array |
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{ |
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array_shift($matches); |
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if (!array_key_exists(0, $matches)) { |
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$matches[0] = 'mixed'; |
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} |
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if (!array_key_exists(1, $matches)) { |
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$matches[1] = ''; |
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} |
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return $matches; |
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} |
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} |
Dgame /
php-type-annotation
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.