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<?php
declare(strict_types=1);
namespace Bakame\Http\StructuredFields;
use function count;
use function in_array;
use function is_array;
use function is_iterable;
/**
* @phpstan-import-type SfMemberInput from StructuredFieldProvider
* @phpstan-import-type SfItemInput from StructuredFieldProvider
* @phpstan-import-type SfItemPair from StructuredFieldProvider
* @phpstan-import-type SfInnerListPair from StructuredFieldProvider
* @phpstan-import-type SfTypeInput from StructuredFieldProvider
*
* @internal Validate containers member
*/
final class Member
{
/**
* @param SfMemberInput $value
*/
public static function innerListOrItem(mixed $value): InnerList|Item
{
if ($value instanceof StructuredFieldProvider) {
$value = $value->toStructuredField();
if ($value instanceof Item || $value instanceof InnerList) {
return $value;
}
throw new InvalidArgument('The '.StructuredFieldProvider::class.' must provide a '.Item::class.' or an '.InnerList::class.'; '.$value::class.' given.');
}
return match (true) {
$value instanceof InnerList,
$value instanceof Item => $value,
is_iterable($value) => InnerList::new(...$value),
default => Item::new($value),
};
}
public static function innerListOrItemFromPair(mixed $value): InnerList|Item
{
if ($value instanceof StructuredFieldProvider) {
$value = $value->toStructuredField();
if ($value instanceof Item || $value instanceof InnerList) {
return $value;
}
throw new InvalidArgument('The '.StructuredFieldProvider::class.' must provide a '.Item::class.' or an '.InnerList::class.'; '.$value::class.' given.');
}
if ($value instanceof InnerList || $value instanceof Item) {
return $value;
}
if (!is_array($value)) {
if (is_iterable($value)) {
throw new SyntaxError('The value must be an Item value not an iterable.');
}
return Item::new($value); /* @phpstan-ignore-line */
}
if (!array_is_list($value)) {
throw new SyntaxError('The pair must be represented by an array as a list.');
}
if ([] === $value) {
return InnerList::new();
}
if (!in_array(count($value), [1, 2], true)) {
throw new SyntaxError('The pair first member represents its value; the second member is its associated parameters.');
}
return is_iterable($value[0]) ? InnerList::fromPair($value) : Item::fromPair($value);
}
/**
* @param SfItemInput|SfItemPair $value
*/
public static function item(mixed $value): Item
{
if ($value instanceof StructuredFieldProvider) {
$value = $value->toStructuredField();
if (!$value instanceof Item) {
throw new InvalidArgument('The '.StructuredFieldProvider::class.' must provide a '.Item::class.'; '.$value::class.' given.');
}
return $value;
}
if ($value instanceof Item) {
return $value;
}
return Item::new($value);
}
/**
* @param SfItemInput|SfItemPair $value
*/
public static function bareItem(mixed $value): Item
{
$bareItem = self::item($value);
if ($bareItem->parameters()->isNotEmpty()) {
throw new InvalidArgument('The "'.$bareItem::class.'" instance is not a Bare Item.');
}
return $bareItem;
}
}
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