92 lines
2.5 KiB
PHP
92 lines
2.5 KiB
PHP
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<?php
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declare(strict_types = 1);
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namespace LanguageServer;
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use LanguageServer\Protocol\{SignatureInformation, ParameterInformation};
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use Microsoft\PhpParser\FunctionLike;
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class SignatureInformationFactory
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{
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/** @var DefinitionResolver */
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private $definitionResolver;
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/**
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* Create a SignatureInformationFactory
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*
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* @param DefinitionResolver $definitionResolver
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*/
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public function __construct(DefinitionResolver $definitionResolver)
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{
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$this->definitionResolver = $definitionResolver;
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}
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/**
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* Create a SignatureInformation from a FunctionLike node
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*
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* @param FunctionLike $node Node to create signature information from
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*
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* @return SignatureInformation
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*/
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public function create(FunctionLike $node): SignatureInformation
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{
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$params = $this->createParameters($node);
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$label = $this->createLabel($params);
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return new SignatureInformation(
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$label,
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$params,
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$this->definitionResolver->getDocumentationFromNode($node)
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);
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}
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/**
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* Gets parameters from a FunctionLike node
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*
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* @param FunctionLike $node Node to get parameters from
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*
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* @return ParameterInformation[]
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*/
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private function createParameters(FunctionLike $node): array
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{
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$params = [];
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if ($node->parameters) {
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foreach ($node->parameters->getElements() as $element) {
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$param = (string) $this->definitionResolver->getTypeFromNode($element);
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$param .= ' ';
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if ($element->dotDotDotToken) {
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$param .= '...';
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}
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$param .= '$' . $element->getName();
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if ($element->default) {
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$param .= ' = ' . $element->default->getText();
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}
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$params[] = new ParameterInformation(
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$param,
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$this->definitionResolver->getDocumentationFromNode($element)
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);
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}
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}
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return $params;
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}
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/**
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* Creates a signature information label from parameters
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*
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* @param ParameterInformation[] $params Parameters to create the label from
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*
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* @return string
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*/
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private function createLabel(array $params): string
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{
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$label = '(';
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if ($params) {
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foreach ($params as $param) {
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$label .= $param->label . ', ';
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}
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$label = substr($label, 0, -2);
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}
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$label .= ')';
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return $label;
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}
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}
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