Add return types to internal & magic methods when possible

Author: nicolas-grekas

ConstraintViolationList.php

@@ -116,15 +116,15 @@ public function getIterator()
     }
 
     /**
-     * {@inheritdoc}
+     * @return int
      */
     public function count()
     {
         return \count($this->violations);
     }
 
     /**
-     * {@inheritdoc}
+     * @return bool
      */
     public function offsetExists($offset)
     {

Tests/Constraints/AbstractComparisonValidatorTestCase.php

@@ -25,7 +25,7 @@ public function __construct($value)
         $this->value = $value;
     }
 
-    public function __toString()
+    public function __toString(): string
     {
         return (string) $this->value;
     }

Tests/Constraints/BicValidatorTest.php

@@ -248,7 +248,7 @@ public function __construct($value)
         $this->value = $value;
     }
 
-    public function __toString()
+    public function __toString(): string
     {
         return (string) $this->value;
     }

Tests/Constraints/UrlValidatorTest.php

@@ -387,7 +387,7 @@ public function testCheckDnsOptionIsDeprecated()
 
 class EmailProvider
 {
-    public function __toString()
+    public function __toString(): string
     {
         return '';
     }

Tests/Fixtures/Countable.php

@@ -20,7 +20,7 @@ public function __construct(array $content)
         $this->content = $content;
     }
 
-    public function count()
+    public function count(): int
     {
         return \count($this->content);
     }

Tests/Fixtures/CustomArrayObject.php

@@ -24,7 +24,7 @@ public function __construct(array $array = null)
         $this->array = $array ?: [];
     }
 
-    public function offsetExists($offset)
+    public function offsetExists($offset): bool
     {
         return \array_key_exists($offset, $this->array);
     }
@@ -48,12 +48,12 @@ public function offsetUnset($offset)
         unset($this->array[$offset]);
     }
 
-    public function getIterator()
+    public function getIterator(): \Traversable
     {
         return new \ArrayIterator($this->array);
     }
 
-    public function count()
+    public function count(): int
     {
         return \count($this->array);
     }
@@ -63,7 +63,7 @@ public function __serialize(): array
         return $this->array;
     }
 
-    public function serialize()
+    public function serialize(): string
     {
         return serialize($this->__serialize());
     }

Tests/Fixtures/ToString.php

@@ -15,7 +15,7 @@ class ToString
 {
     public $data;
 
-    public function __toString()
+    public function __toString(): string
     {
         return 'toString';
     }