Create RationalNumberType.php

Author: peldax

src/RationalNumberType.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Graphpinator\ExtraTypes;
+
+final class RationalNumberType extends \Graphpinator\Typesystem\Type
+{
+    protected const NAME = 'RationalNumberType';
+    protected const DESCRIPTION = 'RationalNumber type - structure for numerator and denominator.';
+
+    public function __construct(
+        private \Graphpinator\ConstraintDirectives\ConstraintDirectiveAccessor $constraintDirectiveAccessor,
+    )
+    {
+        parent::__construct();
+    }
+
+    public function validateNonNullValue(mixed $rawValue) : bool
+    {
+        return $rawValue instanceof \stdClass
+            && \property_exists($rawValue, 'numerator')
+            && \property_exists($rawValue, 'denominator')
+            && \is_int($rawValue->numerator)
+            && \is_int($rawValue->denominator);
+    }
+
+    protected function getFieldDefinition() : \Graphpinator\Typesystem\Field\ResolvableFieldSet
+    {
+        return new \Graphpinator\Typesystem\Field\ResolvableFieldSet([
+            \Graphpinator\Typesystem\Field\ResolvableField::create(
+                'numerator',
+                \Graphpinator\Typesystem\Container::Int()->notNull(),
+                static function(\stdClass $number) : int {
+                    return $number->numerator;
+                },
+            ),
+            \Graphpinator\Typesystem\Field\ResolvableField::create(
+                'denominator',
+                \Graphpinator\Typesystem\Container::Int()->notNull(),
+                static function(\stdClass $number) : int {
+                    return $number->denominator;
+                },
+            )->addDirective(
+                $this->constraintDirectiveAccessor->getInt(),
+                ['min' => 0],
+            ),
+        ]);
+    }
+}