Allow to use certain rules as class attributes

There are a few cases in which we want to validate the object as a
whole, and that validation could be attached to the class as a PHP
attribute. This commit enables that capability and changes a few rules
to be class attributes.

docs/rules/Attributes.md

@@ -7,20 +7,24 @@ Validates the PHP attributes defined in the properties of the input.
 Example of object:
 
 ```php
-use Respect\Validation\Rules;
+use Respect\Validation\Rules as Rule;
 
+#[Rule\AnyOf(
+    new Rule\Property('email', new Rule\NotUndef()),
+    new Rule\Property('phone', new Rule\NotUndef()),
+)]
 final class Person
 {
     public function __construct(
-        #[Rules\NotEmpty]
-        public readonly string $name,
-        #[Rules\Email]
-        public readonly string $email,
-        #[Rules\Date('Y-m-d')]
-        #[Rules\DateTimeDiff('years', new Rules\LessThanOrEqual(25))]
-        public readonly string $birthdate,
-        #[Rules\Phone]
-        public readonly ?string $phone
+        #[Rule\NotEmpty]
+        public string $name,
+        #[Rule\Date('Y-m-d')]
+        #[Rule\DateTimeDiff('years', new Rule\LessThanOrEqual(25))]
+        public string $birthdate,
+        #[Rule\Email]
+        public ?string $email = null,
+        #[Rule\Phone]
+        public ?string $phone = null,
     ) {
     }
 }
@@ -29,33 +33,39 @@ final class Person
 Here is how you can validate the attributes of the object:
 
 ```php
-v::attributes()->assert(new Person('John Doe', '[email protected]', '2020-06-23'));
+v::attributes()->assert(new Person('John Doe', '2020-06-23', '[email protected]'));
 // No exception
 
-v::attributes()->assert(new Person('John Doe', '[email protected]', '2020-06-23', '+31 20 624 1111'));
+v::attributes()->assert(new Person('John Doe', '2020-06-23', '[email protected]', '+12024561111'));
 // No exception
 
-v::attributes()->assert(new Person('', '[email protected]', '2020-06-23', '+1234567890'));
-// Message: name must not be empty
+v::attributes()->assert(new Person('', '2020-06-23', '[email protected]', '+12024561111'));
+// Message: `.name` must not be empty
 
-v::attributes()->assert(new Person('John Doe', 'not an email', '2020-06-23', '+1234567890'));
-// Message: email must be a valid email address
+v::attributes()->assert(new Person('John Doe', 'not a date', '[email protected]', '+12024561111'));
+// Message: `.birthdate` must be a valid date in the format "2005-12-30"
 
-v::attributes()->assert(new Person('John Doe', '[email protected]', 'not a date', '+1234567890'));
-// Message: birthdate must be a valid date in the format "2005-12-30"
+v::attributes()->assert(new Person('John Doe', '2020-06-23', 'not an email', '+12024561111'));
+// Message: `.email` must be a valid email address or must be null
 
-v::attributes()->assert(new Person('John Doe', '[email protected]', '2020-06-23', 'not a phone number'));
-// Message: phone must be a valid telephone number or must be null
+v::attributes()->assert(new Person('John Doe', '2020-06-23', '[email protected]', 'not a phone number'));
+// Message: `.phone` must be a valid telephone number or must be null
 
-v::attributes()->assert(new Person('', 'not an email', 'not a date', 'not a phone number'));
+v::attributes()->assert(new Person('John Doe', '2020-06-23'));
 // Full message:
-// - `Person { +$name="" +$email="not an email" +$birthdate="not a date" +$phone="not a phone number" }` must pass all the rules
-//   - name must not be empty
-//   - email must be a valid email address
-//   - birthdate must pass all the rules
-//     - birthdate must be a valid date in the format "2005-12-30"
-//     - For comparison with now, birthdate must be a valid datetime
-//   - phone must be a valid telephone number or must be null
+// - `Person { +$name="John Doe" +$birthdate="2020-06-23" +$email=null +$phone=null +$address=null }` must pass at least one of the rules
+//  - `.email` must be defined
+//  - `.phone` must be defined
+
+v::attributes()->assert(new Person('', 'not a date', 'not an email', 'not a phone number'));
+// Full message:
+// - `Person { +$name="" +$birthdate="not a date" +$email="not an email" +$phone="not a phone number" +$address=null }` must pass the rules
+//   - `.name` must not be empty
+//   - `.birthdate` must pass all the rules
+//     - `.birthdate` must be a valid date in the format "2005-12-30"
+//     - For comparison with now, `.birthdate` must be a valid datetime
+//   - `.email` must be a valid email address or must be null
+//   - `.phone` must be a valid telephone number or must be null
 ```
 
 ## Caveats

library/Rules/AllOf.php

@@ -20,7 +20,7 @@
 use function array_reduce;
 use function count;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 #[Template(
     '{{name}} must pass the rules',
     '{{name}} must pass the rules',

library/Rules/AnyOf.php

@@ -18,7 +18,7 @@
 use function array_map;
 use function array_reduce;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 #[Template(
     '{{name}} must pass at least one of the rules',
     '{{name}} must pass at least one of the rules',

library/Rules/Attributes.php

@@ -28,7 +28,11 @@ public function evaluate(mixed $input): Result
         }
 
         $rules = [];
-        foreach ((new ReflectionObject($input))->getProperties() as $property) {
+        $reflection = new ReflectionObject($input);
+        foreach ($reflection->getAttributes(Rule::class, ReflectionAttribute::IS_INSTANCEOF) as $attribute) {
+            $rules[] = $attribute->newInstance();
+        }
+        foreach ($reflection->getProperties() as $property) {
             $childrenRules = [];
             foreach ($property->getAttributes(Rule::class, ReflectionAttribute::IS_INSTANCEOF) as $attribute) {
                 $childrenRules[] = $attribute->newInstance();

library/Rules/Call.php

@@ -21,7 +21,7 @@
 use function restore_error_handler;
 use function set_error_handler;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 #[Template(
     '{{input}} must be a suitable argument for {{callable}}',
     '{{input}} must not be a suitable argument for {{callable}}',

library/Rules/Circuit.php

@@ -13,7 +13,7 @@
 use Respect\Validation\Result;
 use Respect\Validation\Rules\Core\Composite;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 final class Circuit extends Composite
 {
     public function evaluate(mixed $input): Result

library/Rules/Lazy.php

@@ -17,7 +17,7 @@
 
 use function call_user_func;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 final class Lazy extends Standard
 {
     /** @var callable(mixed): Rule */

library/Rules/Named.php

@@ -15,7 +15,7 @@
 use Respect\Validation\Rules\Core\Nameable;
 use Respect\Validation\Rules\Core\Wrapper;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 final class Named extends Wrapper implements Nameable
 {
     public function __construct(

library/Rules/NoneOf.php

@@ -20,7 +20,7 @@
 use function array_reduce;
 use function count;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 #[Template(
     '{{name}} must pass the rules',
     '{{name}} must pass the rules',

library/Rules/Not.php

@@ -13,7 +13,7 @@
 use Respect\Validation\Result;
 use Respect\Validation\Rules\Core\Wrapper;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 final class Not extends Wrapper
 {
     public function evaluate(mixed $input): Result

library/Rules/OneOf.php

@@ -21,7 +21,7 @@
 use function count;
 use function usort;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 #[Template(
     '{{name}} must pass one of the rules',
     '{{name}} must pass one of the rules',

library/Rules/Templated.php

@@ -14,7 +14,7 @@
 use Respect\Validation\Rule;
 use Respect\Validation\Rules\Core\Wrapper;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 final class Templated extends Wrapper
 {
     /** @param array<string, mixed> $parameters */

library/Rules/When.php

@@ -14,7 +14,7 @@
 use Respect\Validation\Rule;
 use Respect\Validation\Rules\Core\Standard;
 
-#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
+#[Attribute(Attribute::TARGET_PROPERTY | Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 final class When extends Standard
 {
     private readonly Rule $else;

tests/feature/Rules/AttributesTest.php

@@ -10,14 +10,14 @@
 use Respect\Validation\Test\Stubs\WithAttributes;
 
 test('Default', expectAll(
-    fn() => v::attributes()->assert(new WithAttributes('', '[email protected]', '2024-06-23')),
+    fn() => v::attributes()->assert(new WithAttributes('', '2024-06-23', '[email protected]')),
     '`.name` must not be empty',
     '- `.name` must not be empty',
     ['name' => '`.name` must not be empty'],
 ));
 
 test('Inverted', expectAll(
-    fn() => v::attributes()->assert(new WithAttributes('John Doe', '[email protected]', '2024-06-23', '+1234567890')),
+    fn() => v::attributes()->assert(new WithAttributes('John Doe', '2024-06-23', '[email protected]', '+1234567890')),
     '`.phone` must be a valid telephone number or must be null',
     '- `.phone` must be a valid telephone number or must be null',
     ['phone' => '`.phone` must be a valid telephone number or must be null'],
@@ -31,39 +31,56 @@
 ));
 
 test('Nullable', expectAll(
-    fn() => v::attributes()->assert(new WithAttributes('John Doe', '[email protected]', '2024-06-23', 'not a phone number')),
+    fn() => v::attributes()->assert(new WithAttributes('John Doe', '2024-06-23', '[email protected]', 'not a phone number')),
     '`.phone` must be a valid telephone number or must be null',
     '- `.phone` must be a valid telephone number or must be null',
     ['phone' => '`.phone` must be a valid telephone number or must be null'],
 ));
 
 test('Multiple attributes, all failed', expectAll(
-    fn() => v::attributes()->assert(new WithAttributes('', 'not an email', 'not a date', 'not a phone number')),
+    fn() => v::attributes()->assert(new WithAttributes('', 'not a date', 'not an email', 'not a phone number')),
     '`.name` must not be empty',
     <<<'FULL_MESSAGE'
-    - `Respect\Validation\Test\Stubs\WithAttributes { +$name="" +$email="not an email" +$birthdate="not a date" +$phone ... }` must pass all the rules
+    - `Respect\Validation\Test\Stubs\WithAttributes { +$name="" +$birthdate="not a date" +$email="not an email" +$phone ... }` must pass the rules
       - `.name` must not be empty
-      - `.email` must be a valid email address
       - `.birthdate` must pass all the rules
         - `.birthdate` must be a valid date in the format "2005-12-30"
         - For comparison with now, `.birthdate` must be a valid datetime
+      - `.email` must be a valid email address or must be null
       - `.phone` must be a valid telephone number or must be null
     FULL_MESSAGE,
     [
-        '__root__' => '`Respect\Validation\Test\Stubs\WithAttributes { +$name="" +$email="not an email" +$birthdate="not a date" +$phone ... }` must pass all the rules',
+        '__root__' => '`Respect\Validation\Test\Stubs\WithAttributes { +$name="" +$birthdate="not a date" +$email="not an email" +$phone ... }` must pass the rules',
         'name' => '`.name` must not be empty',
-        'email' => '`.email` must be a valid email address',
         'birthdate' => [
             '__root__' => '`.birthdate` must pass all the rules',
             'date' => '`.birthdate` must be a valid date in the format "2005-12-30"',
             'dateTimeDiffLessThanOrEqual' => 'For comparison with now, `.birthdate` must be a valid datetime',
         ],
+        'email' => '`.email` must be a valid email address or must be null',
         'phone' => '`.phone` must be a valid telephone number or must be null',
     ],
 ));
 
+test('Failed attributes on the class', expectAll(
+    fn() => v::attributes()->assert(new WithAttributes('John Doe', '2024-06-23')),
+    '`.email` must be defined',
+    <<<'FULL_MESSAGE'
+    - `Respect\Validation\Test\Stubs\WithAttributes { +$name="John Doe" +$birthdate="2024-06-23" +$email=null +$phone=n ... }` must pass at least one of the rules
+      - `.email` must be defined
+      - `.phone` must be defined
+    FULL_MESSAGE,
+    [
+        'anyOf' => [
+            '__root__' => '`Respect\Validation\Test\Stubs\WithAttributes { +$name="John Doe" +$birthdate="2024-06-23" +$email=null +$phone=n ... }` must pass at least one of the rules',
+            'email' => '`.email` must be defined',
+            'phone' => '`.phone` must be defined',
+        ],
+    ],
+));
+
 test('Multiple attributes, one failed', expectAll(
-    fn() => v::attributes()->assert(new WithAttributes('John Doe', '[email protected]', '22 years ago')),
+    fn() => v::attributes()->assert(new WithAttributes('John Doe', '22 years ago', '[email protected]')),
     '`.birthdate` must be a valid date in the format "2005-12-30"',
     '- `.birthdate` must be a valid date in the format "2005-12-30"',
     ['birthdate' => '`.birthdate` must be a valid date in the format "2005-12-30"'],

tests/fixtures/data-provider.php

@@ -140,7 +140,7 @@
         'tags' => ['objectType', 'withoutAttributes'],
     ],
     'object with Rule attributes' => [
-        'value' => [new WithAttributes('John Doe', '[email protected]', '1912-06-23')],
+        'value' => [new WithAttributes('John Doe', '1912-06-23', '[email protected]')],
         'tags' => ['objectType', 'withAttributes'],
     ],
     'anonymous class' => [

tests/library/Stubs/WithAttributes.php

@@ -9,24 +9,23 @@
 
 namespace Respect\Validation\Test\Stubs;
 
-use Respect\Validation\Rules\Date;
-use Respect\Validation\Rules\DateTimeDiff;
-use Respect\Validation\Rules\Email;
-use Respect\Validation\Rules\LessThanOrEqual;
-use Respect\Validation\Rules\NotEmpty;
-use Respect\Validation\Rules\Phone;
+use Respect\Validation\Rules as Rule;
 
+#[Rule\AnyOf(
+    new Rule\Property('email', new Rule\NotUndef()),
+    new Rule\Property('phone', new Rule\NotUndef()),
+)]
 final class WithAttributes
 {
     public function __construct(
-        #[NotEmpty]
+        #[Rule\NotEmpty]
         public string $name,
-        #[Email]
-        public string $email,
-        #[Date('Y-m-d')]
-        #[DateTimeDiff('years', new LessThanOrEqual(25))]
+        #[Rule\Date('Y-m-d')]
+        #[Rule\DateTimeDiff('years', new Rule\LessThanOrEqual(25))]
         public string $birthdate,
-        #[Phone]
+        #[Rule\Email]
+        public ?string $email = null,
+        #[Rule\Phone]
         public ?string $phone = null,
         public ?string $address = null,
     ) {

tests/unit/Rules/AttributesTest.php

@@ -55,25 +55,26 @@ public static function providerForObjectsWithValidPropertyValues(): array
             'All' => [
                 new WithAttributes(
                     'John Doe',
-                    '[email protected]',
                     '2020-06-23',
+                    '[email protected]',
                     '+31206241111',
                     'Amstel 1 1011 PN AMSTERDAM Noord-Holland'
                 ),
             ],
-            'Only required' => [new WithAttributes('Jane Doe', '[email protected]', '2017-11-30')],
+            'Only required' => [new WithAttributes('Jane Doe', '2017-11-30', '[email protected]')],
         ];
     }
 
     /** @return array<array{object}> */
     public static function providerForObjectsWithInvalidPropertyValues(): array
     {
         return [
-            [new WithAttributes('', 'not an email', 'not a date', 'not a phone number')],
-            [new WithAttributes('', '[email protected]', '1912-06-23', '+1234567890')],
-            [new WithAttributes('John Doe', 'not an email', '1912-06-23', '+1234567890')],
-            [new WithAttributes('John Doe', '[email protected]', 'not a date', '+1234567890')],
-            [new WithAttributes('John Doe', '[email protected]', '1912-06-23', 'not a phone number')],
+            [new WithAttributes('Jane Doe', '2017-11-30')],
+            [new WithAttributes('', 'not a date', 'not an email', 'not a phone number')],
+            [new WithAttributes('', '1912-06-23', '[email protected]', '+1234567890')],
+            [new WithAttributes('John Doe', '1912-06-23', 'not an email', '+1234567890')],
+            [new WithAttributes('John Doe', 'not a date', '[email protected]', '+1234567890')],
+            [new WithAttributes('John Doe', '1912-06-23', '[email protected]', 'not a phone number')],
         ];
     }
 }