Ensure names are always string

Signed-off-by: Henrique Moody <henriquemoody@gmail.com>

library/Rules/AbstractComposite.php

@@ -26,7 +26,7 @@ abstract class AbstractComposite extends AbstractRule
         $this->addRules($rule);
     }
 
-    public function setName($name)
+    public function setName(string $name): Validatable
     {
         $parentName = $this->getName();
         foreach ($this->rules as $rule) {

library/Rules/AbstractRelated.php

@@ -15,6 +15,7 @@ namespace Respect\Validation\Rules;
 
 use Respect\Validation\Exceptions\ValidationException;
 use Respect\Validation\Validatable;
+use function is_scalar;
 
 abstract class AbstractRelated extends AbstractRule
 {
@@ -28,9 +29,11 @@ abstract class AbstractRelated extends AbstractRule
 
     public function __construct($reference, Validatable $validator = null, $mandatory = true)
     {
-        $this->setName($reference);
-        if ($validator && !$validator->getName()) {
-            $validator->setName($reference);
+        if (is_scalar($reference)) {
+            $this->setName((string) $reference);
+            if ($validator && !$validator->getName()) {
+                $validator->setName((string) $reference);
+            }
         }
 
         $this->reference = $reference;
@@ -38,7 +41,7 @@ abstract class AbstractRelated extends AbstractRule
         $this->mandatory = $mandatory;
     }
 
-    public function setName($name)
+    public function setName(string $name): Validatable
     {
         parent::setName($name);
 

library/Rules/AbstractRule.php

@@ -40,7 +40,7 @@ abstract class AbstractRule implements Validatable
         $this->assert($input);
     }
 
-    public function getName()
+    public function getName(): ?string
     {
         return $this->name;
     }
@@ -50,7 +50,7 @@ abstract class AbstractRule implements Validatable
         return Factory::getDefaultInstance()->exception($this, $input, $extraParams);
     }
 
-    public function setName($name)
+    public function setName(string $name): Validatable
     {
         $this->name = $name;
 

library/Rules/AbstractWrapper.php

@@ -64,7 +64,7 @@ abstract class AbstractWrapper extends AbstractRule
     /**
      * {@inheritdoc}
      */
-    public function setName($name)
+    public function setName(string $name): Validatable
     {
         $this->validatable->setName($name);
 

library/Rules/Not.php

@@ -25,7 +25,7 @@ class Not extends AbstractRule
         $this->rule = $rule;
     }
 
-    public function setName($name)
+    public function setName(string $name): Validatable
     {
         $this->rule->setName($name);
 

library/Validatable.php

@@ -20,11 +20,11 @@ interface Validatable
 
     public function check($input): void;
 
-    public function getName();
+    public function getName(): ?string;
 
     public function reportError($input, array $relatedExceptions = []);
 
-    public function setName($name);
+    public function setName(string $name): Validatable;
 
     public function setTemplate($template);