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name : ResolveValue.php
 <?php

namespace Statamic\Query;

use Statamic\Contracts\Query\ContainsQueryableValues;
use Statamic\Contracts\Query\QueryableValue;
use Statamic\Support\Arr;
use Statamic\Support\Str;

class ResolveValue
{
    public function __invoke($item, $name)
    {
        if (Str::startsWith($name, 'data->')) {
            return $this->directlyAccessData($item, $name);
        }

        $nameExploded = explode('->', $name);

        while (! empty($nameExploded)) {
            $name = array_shift($nameExploded);
            $item = $this->resolveItemPartValue($item, $name);

            if (is_null($item)) {
                return;
            }
        }

        return $item;
    }

    private function resolveItemPartValue($item, $name)
    {
        $value = $this->getItemPartValue($item, $name);

        return $value instanceof QueryableValue
            ? $value->toQueryableValue()
            : $value;
    }

    private function getItemPartValue($item, $name)
    {
        if (is_array($item)) {
            return $item[$name] ?? null;
        }

        if (is_scalar($item)) {
            return null;
        }

        if ($item instanceof ContainsQueryableValues) {
            return $item->getQueryableValue($name);
        }

        if (method_exists($item, $method = Str::camel($name))) {
            return $item->{$method}();
        }

        if (method_exists($item, 'value')) {
            return $item->value($name);
        }

        return $item->get($name);
    }

    private function directlyAccessData($item, $name)
    {
        $name = Str::after($name, 'data->');
        $exploded = explode('->', $name);
        $top = array_shift($exploded);
        $value = $item->get($top);

        return empty($exploded)
            ? $value
            : Arr::get($value, implode('.', $exploded));
    }
}
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