In.php

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<?php

declare(strict_types=1);

namespace ILIAS\Component\Dependencies;

class In implements Dependency
{
    protected Name|string $name;
    protected array $dependant = [];

    public function __construct(
        protected InType $type,
        string $name,
        protected array $resolved_by = []
    ) {
        if ($type !== InType::INTERNAL) {
            $name = new Name($name);
        }
        $this->name = $name;
    }

    public function getName(): string
    {
        return (string) $this->name;
    }

    public function __toString(): string
    {
        return $this->type->value . ": " . $this->name;
    }

    public function getType(): InType
    {
        return $this->type;
    }

    public function addDependant(Out $out): void
    {
        $this->dependant[(string) $out] = $out;
        $out->addDependency($this);
    }

    public function addResolution(Out $other): void
    {
        if ($this->type !== InType::SEEK && count($this->resolved_by) > 0) {
            throw new LogicException(
                "Dependency of type {$this->type} can only be resolved once."
            );
        }
        $this->resolved_by[] = $other;
        $other->addResolves($this);
    }

    public function getResolvedBy(): array
    {
        return $this->resolved_by;
    }

    public function resetResolutions(): void
    {
        $this->resolved_by = [];
    }
}