add instance cache, remove unnecessary execution paths (#288)

fix wrong merge

Author: narcoticfresh

src/JsonSchema/Constraints/Factory.php

@@ -23,7 +23,7 @@ class Factory
      * @var SchemaStorage
      */
     protected $schemaStorage;
-   
+
     /**
      * @var UriRetriever $uriRetriever
      */
@@ -56,6 +56,11 @@ class Factory
         'validator' => 'JsonSchema\Validator',
     );
 
+    /**
+     * @var array<ConstraintInterface>
+     */
+    private $instanceCache = array();
+
     /**
      * @param SchemaStorage $schemaStorage
      * @param UriRetrieverInterface $uriRetriever
@@ -78,7 +83,7 @@ public function getUriRetriever()
     {
         return $this->uriRetriever;
     }
-    
+
     public function getSchemaStorage()
     {
         return $this->schemaStorage;
@@ -124,12 +129,15 @@ public function setConstraintClass($name, $class)
     public function createInstanceFor($constraintName)
     {
         if (array_key_exists($constraintName, $this->constraintMap)) {
-            return new $this->constraintMap[$constraintName](
-                $this->checkMode,
-                $this->schemaStorage,
-                $this->uriRetriever,
-                $this
-            );
+            if (!isset($this->instanceCache[$constraintName])) {
+                $this->instanceCache[$constraintName] = new $this->constraintMap[$constraintName](
+                    $this->checkMode,
+                    $this->schemaStorage,
+                    $this->uriRetriever,
+                    $this
+                );
+            }
+            return clone $this->instanceCache[$constraintName];
         }
         throw new InvalidArgumentException('Unknown constraint ' . $constraintName);
     }

src/JsonSchema/Constraints/ObjectConstraint.php

@@ -105,11 +105,6 @@ public function validateElement($element, $matches, $objectDefinition = null, Js
                 $this->addError($path, "The presence of the property " . $i . " requires that " . $require . " also be present", 'requires');
             }
 
-            if (!$definition) {
-                // normal property verification
-                $this->checkUndefined($value, new \stdClass(), $path, $i);
-            }
-
             $property = $this->getProperty($element, $i, new UndefinedConstraint());
             if (is_object($property)) {
                 $this->validateMinMaxConstraint(!($property instanceof UndefinedConstraint) ? $property : $element, $definition, $path);
@@ -129,7 +124,11 @@ public function validateDefinition($element, $objectDefinition = null, JsonPoint
         foreach ($objectDefinition as $i => $value) {
             $property = $this->getProperty($element, $i, $this->getFactory()->createInstanceFor('undefined'));
             $definition = $this->getProperty($objectDefinition, $i);
-            $this->checkUndefined($property, $definition, $path, $i);
+
+            if (is_object($definition)) {
+                // Undefined constraint will check for is_object() and quit if is not - so why pass it?
+                $this->checkUndefined($property, $definition, $path, $i);
+            }
         }
     }