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Edit File: PhpDocNodeResolver.php

<?php declare(strict_types = 1);

namespace PHPStan\PhpDoc;

use PHPStan\Analyser\NameScope;
use PHPStan\PhpDoc\Tag\DeprecatedTag;
use PHPStan\PhpDoc\Tag\MethodTag;
use PHPStan\PhpDoc\Tag\MethodTagParameter;
use PHPStan\PhpDoc\Tag\ParamTag;
use PHPStan\PhpDoc\Tag\PropertyTag;
use PHPStan\PhpDoc\Tag\ReturnTag;
use PHPStan\PhpDoc\Tag\ThrowsTag;
use PHPStan\PhpDoc\Tag\VarTag;
use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprNullNode;
use PHPStan\PhpDocParser\Ast\PhpDoc\PhpDocNode;
use PHPStan\PhpDocParser\Ast\PhpDoc\ThrowsTagValueNode;
use PHPStan\Reflection\PassedByReference;
use PHPStan\Type\ArrayType;
use PHPStan\Type\IntegerType;
use PHPStan\Type\MixedType;
use PHPStan\Type\Type;
use PHPStan\Type\TypeCombinator;

class PhpDocNodeResolver
{

/** @var TypeNodeResolver */
	private $typeNodeResolver;

public function __construct(TypeNodeResolver $typeNodeResolver)
	{
		$this->typeNodeResolver = $typeNodeResolver;
	}

public function resolve(PhpDocNode $phpDocNode, NameScope $nameScope): ResolvedPhpDocBlock
	{
		return ResolvedPhpDocBlock::create(
			$this->resolveVarTags($phpDocNode, $nameScope),
			$this->resolveMethodTags($phpDocNode, $nameScope),
			$this->resolvePropertyTags($phpDocNode, $nameScope),
			$this->resolveParamTags($phpDocNode, $nameScope),
			$this->resolveReturnTag($phpDocNode, $nameScope),
			$this->resolveThrowsTags($phpDocNode, $nameScope),
			$this->resolveDeprecatedTag($phpDocNode, $nameScope),
			$this->resolveIsDeprecated($phpDocNode),
			$this->resolveIsInternal($phpDocNode),
			$this->resolveIsFinal($phpDocNode)
		);
	}

/**
	 * @param PhpDocNode $phpDocNode
	 * @param NameScope $nameScope
	 * @return array<string|int, \PHPStan\PhpDoc\Tag\VarTag>
	 */
	private function resolveVarTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
	{
		$resolved = [];
		foreach ($phpDocNode->getVarTagValues() as $tagValue) {
			if ($tagValue->variableName !== '') {
				$variableName = substr($tagValue->variableName, 1);
				$type = !isset($resolved[$variableName])
					? $this->typeNodeResolver->resolve($tagValue->type, $nameScope)
					: new MixedType();
				$resolved[$variableName] = new VarTag($type);

} else {
				$resolved[] = new VarTag($this->typeNodeResolver->resolve($tagValue->type, $nameScope));
			}
		}

return $resolved;
	}

/**
	 * @param PhpDocNode $phpDocNode
	 * @param NameScope $nameScope
	 * @return array<string, \PHPStan\PhpDoc\Tag\PropertyTag>
	 */
	private function resolvePropertyTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
	{
		$resolved = [];

foreach ($phpDocNode->getPropertyTagValues() as $tagValue) {
			$propertyName = substr($tagValue->propertyName, 1);
			$propertyType = !isset($resolved[$propertyName])
				? $this->typeNodeResolver->resolve($tagValue->type, $nameScope)
				: new MixedType();

$resolved[$propertyName] = new PropertyTag(
				$propertyType,
				true,
				true
			);
		}

foreach ($phpDocNode->getPropertyReadTagValues() as $tagValue) {
			$propertyName = substr($tagValue->propertyName, 1);
			$propertyType = !isset($resolved[$propertyName])
				? $this->typeNodeResolver->resolve($tagValue->type, $nameScope)
				: new MixedType();

$resolved[$propertyName] = new PropertyTag(
				$propertyType,
				true,
				false
			);
		}

foreach ($phpDocNode->getPropertyWriteTagValues() as $tagValue) {
			$propertyName = substr($tagValue->propertyName, 1);
			$propertyType = !isset($resolved[$propertyName])
				? $this->typeNodeResolver->resolve($tagValue->type, $nameScope)
				: new MixedType();

$resolved[$propertyName] = new PropertyTag(
				$propertyType,
				false,
				true
			);
		}

return $resolved;
	}

/**
	 * @param PhpDocNode $phpDocNode
	 * @param NameScope $nameScope
	 * @return array<string, \PHPStan\PhpDoc\Tag\MethodTag>
	 */
	private function resolveMethodTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
	{
		$resolved = [];

foreach ($phpDocNode->getMethodTagValues() as $tagValue) {
			$parameters = [];
			foreach ($tagValue->parameters as $parameterNode) {
				$parameterName = substr($parameterNode->parameterName, 1);
				$type = $parameterNode->type !== null ? $this->typeNodeResolver->resolve($parameterNode->type, $nameScope) : new MixedType();
				if ($parameterNode->defaultValue instanceof ConstExprNullNode) {
					$type = TypeCombinator::addNull($type);
				}
				$parameters[$parameterName] = new MethodTagParameter(
					$type,
					$parameterNode->isReference
						? PassedByReference::createCreatesNewVariable()
						: PassedByReference::createNo(),
					$parameterNode->isVariadic || $parameterNode->defaultValue !== null,
					$parameterNode->isVariadic
				);
			}

$resolved[$tagValue->methodName] = new MethodTag(
				$tagValue->returnType !== null ? $this->typeNodeResolver->resolve($tagValue->returnType, $nameScope) : new MixedType(),
				$tagValue->isStatic,
				$parameters
			);
		}

return $resolved;
	}

/**
	 * @param PhpDocNode $phpDocNode
	 * @param NameScope $nameScope
	 * @return array<string, \PHPStan\PhpDoc\Tag\ParamTag>
	 */
	private function resolveParamTags(PhpDocNode $phpDocNode, NameScope $nameScope): array
	{
		$resolved = [];
		foreach ($phpDocNode->getParamTagValues() as $tagValue) {
			$parameterName = substr($tagValue->parameterName, 1);
			$parameterType = !isset($resolved[$parameterName])
				? $this->typeNodeResolver->resolve($tagValue->type, $nameScope)
				: new MixedType();

if ($tagValue->isVariadic) {
				if (!$parameterType instanceof ArrayType) {
					$parameterType = new ArrayType(new IntegerType(), $parameterType);

} elseif ($parameterType->getKeyType() instanceof MixedType) {
					$parameterType = new ArrayType(new IntegerType(), $parameterType->getItemType());
				}
			}

$resolved[$parameterName] = new ParamTag(
				$parameterType,
				$tagValue->isVariadic
			);
		}

return $resolved;
	}

private function resolveReturnTag(PhpDocNode $phpDocNode, NameScope $nameScope): ?\PHPStan\PhpDoc\Tag\ReturnTag
	{
		foreach ($phpDocNode->getReturnTagValues() as $tagValue) {
			return new ReturnTag($this->typeNodeResolver->resolve($tagValue->type, $nameScope));
		}

return null;
	}

private function resolveThrowsTags(PhpDocNode $phpDocNode, NameScope $nameScope): ?\PHPStan\PhpDoc\Tag\ThrowsTag
	{
		$types = array_map(function (ThrowsTagValueNode $throwsTagValue) use ($nameScope): Type {
			return $this->typeNodeResolver->resolve($throwsTagValue->type, $nameScope);
		}, $phpDocNode->getThrowsTagValues());

if (count($types) === 0) {
			return null;
		}

return new ThrowsTag(TypeCombinator::union(...$types));
	}

private function resolveDeprecatedTag(PhpDocNode $phpDocNode, NameScope $nameScope): ?\PHPStan\PhpDoc\Tag\DeprecatedTag
	{
		foreach ($phpDocNode->getDeprecatedTagValues() as $deprecatedTagValue) {
			$description = (string) $deprecatedTagValue;
			return new DeprecatedTag($description === '' ? null : $description);
		}

return null;
	}

private function resolveIsDeprecated(PhpDocNode $phpDocNode): bool
	{
		$deprecatedTags = $phpDocNode->getTagsByName('@deprecated');

return count($deprecatedTags) > 0;
	}

private function resolveIsInternal(PhpDocNode $phpDocNode): bool
	{
		$internalTags = $phpDocNode->getTagsByName('@internal');

return count($internalTags) > 0;
	}

private function resolveIsFinal(PhpDocNode $phpDocNode): bool
	{
		$finalTags = $phpDocNode->getTagsByName('@final');

return count($finalTags) > 0;
	}

}