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172 lines
5.2 KiB
172 lines
5.2 KiB
<?php
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declare(strict_types=1);
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/**
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* This file is part of phpDocumentor.
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*
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* @link http://phpdoc.org
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*/
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namespace phpDocumentor\Reflection\DocBlock\Tags;
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use phpDocumentor\Reflection\DocBlock\Description;
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use phpDocumentor\Reflection\DocBlock\DescriptionFactory;
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use phpDocumentor\Reflection\Type;
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use phpDocumentor\Reflection\TypeResolver;
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use phpDocumentor\Reflection\Types\Context as TypeContext;
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use phpDocumentor\Reflection\Utils;
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use Webmozart\Assert\Assert;
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use function array_shift;
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use function array_unshift;
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use function implode;
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use function strpos;
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use function substr;
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use const PREG_SPLIT_DELIM_CAPTURE;
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/**
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* Reflection class for the {@}param tag in a Docblock.
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*/
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final class Param extends TagWithType implements Factory\StaticMethod
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{
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/** @var string|null */
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private $variableName;
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/** @var bool determines whether this is a variadic argument */
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private $isVariadic;
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/** @var bool determines whether this is passed by reference */
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private $isReference;
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public function __construct(
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?string $variableName,
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?Type $type = null,
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bool $isVariadic = false,
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?Description $description = null,
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bool $isReference = false
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) {
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$this->name = 'param';
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$this->variableName = $variableName;
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$this->type = $type;
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$this->isVariadic = $isVariadic;
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$this->description = $description;
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$this->isReference = $isReference;
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}
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public static function create(
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string $body,
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?TypeResolver $typeResolver = null,
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?DescriptionFactory $descriptionFactory = null,
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?TypeContext $context = null
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) : self {
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Assert::stringNotEmpty($body);
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Assert::notNull($typeResolver);
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Assert::notNull($descriptionFactory);
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[$firstPart, $body] = self::extractTypeFromBody($body);
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$type = null;
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$parts = Utils::pregSplit('/(\s+)/Su', $body, 2, PREG_SPLIT_DELIM_CAPTURE);
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$variableName = '';
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$isVariadic = false;
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$isReference = false;
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// if the first item that is encountered is not a variable; it is a type
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if ($firstPart && !self::strStartsWithVariable($firstPart)) {
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$type = $typeResolver->resolve($firstPart, $context);
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} else {
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// first part is not a type; we should prepend it to the parts array for further processing
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array_unshift($parts, $firstPart);
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}
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// if the next item starts with a $ or ...$ or &$ or &...$ it must be the variable name
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if (isset($parts[0]) && self::strStartsWithVariable($parts[0])) {
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$variableName = array_shift($parts);
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if ($type) {
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array_shift($parts);
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}
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Assert::notNull($variableName);
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if (strpos($variableName, '$') === 0) {
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$variableName = substr($variableName, 1);
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} elseif (strpos($variableName, '&$') === 0) {
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$isReference = true;
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$variableName = substr($variableName, 2);
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} elseif (strpos($variableName, '...$') === 0) {
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$isVariadic = true;
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$variableName = substr($variableName, 4);
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} elseif (strpos($variableName, '&...$') === 0) {
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$isVariadic = true;
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$isReference = true;
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$variableName = substr($variableName, 5);
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}
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}
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$description = $descriptionFactory->create(implode('', $parts), $context);
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return new static($variableName, $type, $isVariadic, $description, $isReference);
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}
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/**
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* Returns the variable's name.
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*/
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public function getVariableName() : ?string
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{
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return $this->variableName;
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}
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/**
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* Returns whether this tag is variadic.
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*/
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public function isVariadic() : bool
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{
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return $this->isVariadic;
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}
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/**
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* Returns whether this tag is passed by reference.
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*/
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public function isReference() : bool
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{
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return $this->isReference;
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}
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/**
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* Returns a string representation for this tag.
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*/
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public function __toString() : string
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{
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if ($this->description) {
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$description = $this->description->render();
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} else {
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$description = '';
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}
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$variableName = '';
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if ($this->variableName) {
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$variableName .= ($this->isReference ? '&' : '') . ($this->isVariadic ? '...' : '');
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$variableName .= '$' . $this->variableName;
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}
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$type = (string) $this->type;
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return $type
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. ($variableName !== '' ? ($type !== '' ? ' ' : '') . $variableName : '')
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. ($description !== '' ? ($type !== '' || $variableName !== '' ? ' ' : '') . $description : '');
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}
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private static function strStartsWithVariable(string $str) : bool
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{
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return strpos($str, '$') === 0
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strpos($str, '...$') === 0
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strpos($str, '&$') === 0
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strpos($str, '&...$') === 0;
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}
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}
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