Add support for non-negative-int

Author: mspirkov

src/PseudoTypes/NonNegativeInteger.php

@@ -0,0 +1,39 @@
+<?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\PseudoTypes;
+
+use phpDocumentor\Reflection\PseudoType;
+use phpDocumentor\Reflection\Type;
+use phpDocumentor\Reflection\Types\Integer;
+
+/**
+ * Value Object representing the type 'non-negative-int'.
+ *
+ * @psalm-immutable
+ */
+final class NonNegativeInteger extends Integer implements PseudoType
+{
+    public function underlyingType(): Type
+    {
+        return new Integer();
+    }
+
+    /**
+     * Returns a rendered output of the Type as it would be used in a DocBlock.
+     */
+    public function __toString(): string
+    {
+        return 'non-negative-int';
+    }
+}

src/TypeResolver.php

@@ -45,6 +45,7 @@
 use phpDocumentor\Reflection\PseudoTypes\NonEmptyLowercaseString;
 use phpDocumentor\Reflection\PseudoTypes\NonEmptyString;
 use phpDocumentor\Reflection\PseudoTypes\NonFalsyString;
+use phpDocumentor\Reflection\PseudoTypes\NonNegativeInteger;
 use phpDocumentor\Reflection\PseudoTypes\NonPositiveInteger;
 use phpDocumentor\Reflection\PseudoTypes\Numeric_;
 use phpDocumentor\Reflection\PseudoTypes\NumericString;
@@ -185,6 +186,7 @@ final class TypeResolver
         'non-falsy-string' => NonFalsyString::class,
         'truthy-string' => TruthyString::class,
         'non-positive-int' => NonPositiveInteger::class,
+        'non-negative-int' => NonNegativeInteger::class,
     ];
 
     /**

tests/unit/PseudoTypes/NonNegativeIntegerTest.php

@@ -0,0 +1,32 @@
+<?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\PseudoTypes;
+
+use phpDocumentor\Reflection\Types\Integer;
+use PHPUnit\Framework\TestCase;
+
+final class NonNegativeIntegerTest extends TestCase
+{
+    public function testCreate(): void
+    {
+        $type = new NonNegativeInteger();
+
+        $this->assertEquals(new Integer(), $type->underlyingType());
+    }
+
+    public function testToString(): void
+    {
+        $this->assertSame('non-negative-int', (string) (new NonNegativeInteger()));
+    }
+}

tests/unit/TypeResolverTest.php

@@ -45,6 +45,7 @@
 use phpDocumentor\Reflection\PseudoTypes\NonEmptyLowercaseString;
 use phpDocumentor\Reflection\PseudoTypes\NonEmptyString;
 use phpDocumentor\Reflection\PseudoTypes\NonFalsyString;
+use phpDocumentor\Reflection\PseudoTypes\NonNegativeInteger;
 use phpDocumentor\Reflection\PseudoTypes\NonPositiveInteger;
 use phpDocumentor\Reflection\PseudoTypes\Numeric_;
 use phpDocumentor\Reflection\PseudoTypes\NumericString;
@@ -681,6 +682,7 @@ public function provideKeywords(): array
             ['non-falsy-string', NonFalsyString::class],
             ['truthy-string', TruthyString::class],
             ['non-positive-int', NonPositiveInteger::class],
+            ['non-negative-int', NonNegativeInteger::class],
         ];
     }