<?php

namespace PHPStan\PhpDocParser\Ast\PhpDoc;

use PHPStan\PhpDocParser\Ast\Node;
use PHPStan\PhpDocParser\Ast\NodeAttributes;

use function array_column;
use function array_filter;
use function array_map;
use function implode;

class PhpDocNode implements Node
{
    use NodeAttributes;

    /** @var PhpDocChildNode[] */
    public $children;

    /**
     * @param PhpDocChildNode[] $children
     */
    public function __construct(array $children)
    {
        $this->children = $children;
    }

    /**
     * @return PhpDocTagNode[]
     */
    public function getTags(): array
    {
        return array_filter($this->children, static function (PhpDocChildNode $child): bool {
            return $child instanceof PhpDocTagNode;
        });
    }

    /**
     * @return PhpDocTagNode[]
     */
    public function getTagsByName(string $tagName): array
    {
        return array_filter($this->getTags(), static function (PhpDocTagNode $tag) use ($tagName): bool {
            return $tag->name === $tagName;
        });
    }

    /**
     * @return VarTagValueNode[]
     */
    public function getVarTagValues(string $tagName = '@var'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof VarTagValueNode;
            }
        );
    }

    /**
     * @return ParamTagValueNode[]
     */
    public function getParamTagValues(string $tagName = '@param'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof ParamTagValueNode;
            }
        );
    }

    /**
     * @return TypelessParamTagValueNode[]
     */
    public function getTypelessParamTagValues(string $tagName = '@param'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof TypelessParamTagValueNode;
            }
        );
    }

    /**
     * @return TemplateTagValueNode[]
     */
    public function getTemplateTagValues(string $tagName = '@template'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof TemplateTagValueNode;
            }
        );
    }

    /**
     * @return ExtendsTagValueNode[]
     */
    public function getExtendsTagValues(string $tagName = '@extends'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof ExtendsTagValueNode;
            }
        );
    }

    /**
     * @return ImplementsTagValueNode[]
     */
    public function getImplementsTagValues(string $tagName = '@implements'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof ImplementsTagValueNode;
            }
        );
    }

    /**
     * @return UsesTagValueNode[]
     */
    public function getUsesTagValues(string $tagName = '@use'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof UsesTagValueNode;
            }
        );
    }

    /**
     * @return ReturnTagValueNode[]
     */
    public function getReturnTagValues(string $tagName = '@return'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof ReturnTagValueNode;
            }
        );
    }

    /**
     * @return ThrowsTagValueNode[]
     */
    public function getThrowsTagValues(string $tagName = '@throws'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof ThrowsTagValueNode;
            }
        );
    }

    /**
     * @return MixinTagValueNode[]
     */
    public function getMixinTagValues(string $tagName = '@mixin'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof MixinTagValueNode;
            }
        );
    }

    /**
     * @return DeprecatedTagValueNode[]
     */
    public function getDeprecatedTagValues(): array
    {
        return array_filter(
            array_column($this->getTagsByName('@deprecated'), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof DeprecatedTagValueNode;
            }
        );
    }

    /**
     * @return PropertyTagValueNode[]
     */
    public function getPropertyTagValues(string $tagName = '@property'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof PropertyTagValueNode;
            }
        );
    }

    /**
     * @return PropertyTagValueNode[]
     */
    public function getPropertyReadTagValues(string $tagName = '@property-read'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof PropertyTagValueNode;
            }
        );
    }

    /**
     * @return PropertyTagValueNode[]
     */
    public function getPropertyWriteTagValues(string $tagName = '@property-write'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof PropertyTagValueNode;
            }
        );
    }

    /**
     * @return MethodTagValueNode[]
     */
    public function getMethodTagValues(string $tagName = '@method'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof MethodTagValueNode;
            }
        );
    }

    /**
     * @return TypeAliasTagValueNode[]
     */
    public function getTypeAliasTagValues(string $tagName = '@phpstan-type'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof TypeAliasTagValueNode;
            }
        );
    }

    /**
     * @return TypeAliasImportTagValueNode[]
     */
    public function getTypeAliasImportTagValues(string $tagName = '@phpstan-import-type'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof TypeAliasImportTagValueNode;
            }
        );
    }

    /**
     * @return AssertTagValueNode[]
     */
    public function getAssertTagValues(string $tagName = '@phpstan-assert'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof AssertTagValueNode;
            }
        );
    }

    /**
     * @return AssertTagPropertyValueNode[]
     */
    public function getAssertPropertyTagValues(string $tagName = '@phpstan-assert'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof AssertTagPropertyValueNode;
            }
        );
    }

    /**
     * @return AssertTagMethodValueNode[]
     */
    public function getAssertMethodTagValues(string $tagName = '@phpstan-assert'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof AssertTagMethodValueNode;
            }
        );
    }

    /**
     * @return SelfOutTagValueNode[]
     */
    public function getSelfOutTypeTagValues(string $tagName = '@phpstan-this-out'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof SelfOutTagValueNode;
            }
        );
    }

    /**
     * @return ParamOutTagValueNode[]
     */
    public function getParamOutTypeTagValues(string $tagName = '@param-out'): array
    {
        return array_filter(
            array_column($this->getTagsByName($tagName), 'value'),
            static function (PhpDocTagValueNode $value): bool {
                return $value instanceof ParamOutTagValueNode;
            }
        );
    }

    public function __toString(): string
    {
        $children = array_map(
            static function (PhpDocChildNode $child): string {
                $s = (string) $child;
                return $s === '' ? '' : ' ' . $s;
            },
            $this->children
        );
        return "/**\n *" . implode("\n *", $children) . "\n */";
    }
}
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