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;
当前路径:vendor/phpdocumentor/type-resolver/src/Types/AbstractList.php
<?php

declare(strict_types=1);

/**
 * This file is part of phpDocumentor.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @link      http://phpdoc.org
 */

namespace phpDocumentor\Reflection\Types;

use phpDocumentor\Reflection\Type;

/**
 * Represents a list of values. This is an abstract class for Array_ and Collection.
 *
 * @psalm-immutable
 */
abstract class AbstractList implements Type
{
    /** @var Type */
    protected $valueType;

    /** @var Type|null */
    protected $keyType;

    /** @var Type */
    protected $defaultKeyType;

    /**
     * Initializes this representation of an array with the given Type.
     */
    public function __construct(?Type $valueType = null, ?Type $keyType = null)
    {
        if ($valueType === null) {
            $valueType = new Mixed_();
        }

        $this->valueType      = $valueType;
        $this->defaultKeyType = new Compound([new String_(), new Integer()]);
        $this->keyType        = $keyType;
    }

    /**
     * Returns the type for the keys of this array.
     */
    public function getKeyType() : Type
    {
        return $this->keyType ?? $this->defaultKeyType;
    }

    /**
     * Returns the value for the keys of this array.
     */
    public function getValueType() : Type
    {
        return $this->valueType;
    }

    /**
     * Returns a rendered output of the Type as it would be used in a DocBlock.
     */
    public function __toString() : string
    {
        if ($this->keyType) {
            return 'array<' . $this->keyType . ',' . $this->valueType . '>';
        }

        if ($this->valueType instanceof Mixed_) {
            return 'array';
        }

        if ($this->valueType instanceof Compound) {
            return '(' . $this->valueType . ')[]';
        }

        return $this->valueType . '[]';
    }
}
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