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Filename : MergeVariablesTrait.php
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<?php

declare (strict_types=1);
/**
 * CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 * @link          https://cakephp.org CakePHP(tm) Project
 * @since         3.0.0
 * @license       https://opensource.org/licenses/mit-license.php MIT License
 */
namespace WPToolkitDependenciesIsolationPrefix\Cake\Utility;

/**
 * Provides features for merging object properties recursively with
 * parent classes.
 */
trait MergeVariablesTrait
{
    /**
     * Merge the list of $properties with all parent classes of the current class.
     *
     * ### Options:
     *
     * - `associative` - A list of properties that should be treated as associative arrays.
     *   Properties in this list will be passed through Hash::normalize() before merging.
     *
     * @param array<string> $properties An array of properties and the merge strategy for them.
     * @param array<string, mixed> $options The options to use when merging properties.
     * @return void
     */
    protected function _mergeVars(array $properties, array $options = []) : void
    {
        $class = static::class;
        $parents = [];
        while (\true) {
            $parent = \get_parent_class($class);
            if (!$parent) {
                break;
            }
            $parents[] = $parent;
            $class = $parent;
        }
        foreach ($properties as $property) {
            if (!\property_exists($this, $property)) {
                continue;
            }
            $thisValue = $this->{$property};
            if ($thisValue === null || $thisValue === \false) {
                continue;
            }
            $this->_mergeProperty($property, $parents, $options);
        }
    }
    /**
     * Merge a single property with the values declared in all parent classes.
     *
     * @param string $property The name of the property being merged.
     * @param array<string> $parentClasses An array of classes you want to merge with.
     * @param array<string, mixed> $options Options for merging the property, see _mergeVars()
     * @return void
     */
    protected function _mergeProperty(string $property, array $parentClasses, array $options) : void
    {
        $thisValue = $this->{$property};
        $isAssoc = \false;
        if (isset($options['associative']) && \in_array($property, (array) $options['associative'], \true)) {
            $isAssoc = \true;
        }
        if ($isAssoc) {
            $thisValue = Hash::normalize($thisValue);
        }
        foreach ($parentClasses as $class) {
            $parentProperties = \get_class_vars($class);
            if (empty($parentProperties[$property])) {
                continue;
            }
            $parentProperty = $parentProperties[$property];
            if (!\is_array($parentProperty)) {
                continue;
            }
            $thisValue = $this->_mergePropertyData($thisValue, $parentProperty, $isAssoc);
        }
        $this->{$property} = $thisValue;
    }
    /**
     * Merge each of the keys in a property together.
     *
     * @param array $current The current merged value.
     * @param array $parent The parent class' value.
     * @param bool $isAssoc Whether the merging should be done in associative mode.
     * @return array The updated value.
     */
    protected function _mergePropertyData(array $current, array $parent, bool $isAssoc)
    {
        if (!$isAssoc) {
            return \array_merge($parent, $current);
        }
        $parent = Hash::normalize($parent);
        foreach ($parent as $key => $value) {
            if (!isset($current[$key])) {
                $current[$key] = $value;
            }
        }
        return $current;
    }
}