Initial implementation of the ‘additionalProperties’ attribute

src/engines/json/attributes/additionalProperties.js

@@ -1,10 +1,62 @@
 /**
  * AdditionalProperties
  */
-Validation.prototype.addAttributeConstructor('additionalProperties', function additionalPropertiesConstructor() {
-  return function additionalProperties(property, propertyValue, attributeValue, propertyAttributes, callback) {
-
+var additionalPropertiesAttribute = function additionalProperties(property, propertyValue, attributeValue, propertyAttributes, callback) {
+
+  var self = this;
+
+  /**
+   * {
+   *   additionalProperties: true,
+   *   ...
+   * }
+   */
+  if (attributeValue === true) {
     return callback();
-
-  };
-});
+  }
+
+  // Filter the forbidden properties
+  var propertyKeys = keys(propertyValue);
+  var forbiddenProperties = filter(propertyKeys, function(key) {
+    return !propertyAttributes.properties[key];
+  });
+
+  if (isEmpty(forbiddenProperties)) {
+    return callback();
+  }
+
+  /**
+   * {
+   *   additionalProperties: false,
+   *   ...
+   * }
+   */
+  if (attributeValue === false) {
+    this.addError();
+    return callback();
+  }
+
+  /**
+   * {
+   *   additionalProperties: {
+   *     type: 'string',
+   *     ...
+   *   },
+   *   ...
+   * }
+   */
+  if (isObject(attributeValue)) {
+    return each(forbiddenProperties, function(index, key, callback) {
+      return self.validateSchema(
+        propertyValue[key],
+        attributeValue,
+        property + key,
+        callback
+      );
+    }, callback);
+  }
+
+};
+
+// Export
+Validation.prototype.addAttribute('additionalProperties', additionalPropertiesAttribute);

src/engines/json/validateProperty.js

@@ -59,7 +59,7 @@ Validation.prototype.validateProperty = function(property, propertyValue, proper
       }
     };
 
-    if (propertyAttributes[attributeName]) {
+    if (isDefined(propertyAttributes[attributeName])) {
       return attributeFn.apply(context, [
         property,
         propertyValue,

src/utils/filter.js

@@ -0,0 +1,9 @@
+/**
+ * Filter
+ *
+ * @param {object} arr
+ * @param {function} iterator
+ */
+var filter = function(arr, iterator, context) {
+  return Array.prototype.filter.apply(arr, [iterator, context || this]);
+};

src/utils/isDefined.js

@@ -0,0 +1,8 @@
+/**
+ * IsDefined
+ *
+ * @param {object} input
+ */
+var isDefined = function(input) {
+  return typeof input !== 'undefined';
+};

tools/compile.js

@@ -13,9 +13,11 @@ var files = [
   './src/utils/detectType.js',
   './src/utils/each.js',
   './src/utils/every.js',
+  './src/utils/filter.js',
   './src/utils/hasProperty.js',
   './src/utils/isArray.js',
   './src/utils/isBoolean.js',
+  './src/utils/isDefined.js',
   './src/utils/isEmpty.js',
   './src/utils/isFunction.js',
   './src/utils/isInteger.js',
@@ -39,7 +41,6 @@ var files = [
   './src/engines/json/addAttribute.js',
   './src/engines/json/addAttributeConstructor.js',
 
-  './src/engines/json/attributes/additionalItems.js',
   './src/engines/json/attributes/additionalProperties.js',
   './src/engines/json/attributes/divisibleBy.js',
   './src/engines/json/attributes/enum.js',