1 files changed, 73 insertions, 0 deletions
diff --git a/addon-sdk/source/lib/sdk/places/contract.js b/addon-sdk/source/lib/sdk/places/contract.js
new file mode 100644
index 000000000..a3541c34d
--- /dev/null
+++ b/addon-sdk/source/lib/sdk/places/contract.js
@@ -0,0 +1,73 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+module.metadata = {
+  "stability": "unstable"
+};
+
+const { Cc, Ci } = require('chrome');
+const { isValidURI, URL } = require('../url');
+const { contract } = require('../util/contract');
+const { extend } = require('../util/object');
+
+// map of property validations
+const validItem = {
+  id: {
+    is: ['number', 'undefined', 'null'],
+  },
+  group: {
+    is: ['object', 'number', 'undefined', 'null'],
+    ok: function (value) {
+      return value &&
+        (value.toString && value.toString() === '[object Group]') ||
+        typeof value === 'number' ||
+        value.type === 'group';
+    },
+    msg: 'The `group` property must be a valid Group object'
+  },
+  index: {
+    is: ['undefined', 'null', 'number'],
+    map: value => value == null ? -1 : value,
+    msg: 'The `index` property must be a number.'
+  },
+  updated: {
+    is: ['number', 'undefined']
+  }
+};
+
+const validTitle = {
+  title: {
+    is: ['string'],
+    msg: 'The `title` property must be defined.'
+  }
+};
+
+const validURL = {
+  url: {
+    is: ['string'],
+    ok: isValidURI,
+    msg: 'The `url` property must be a valid URL.'
+  }
+};
+
+const validTags = {
+  tags: {
+    is: ['object'],
+    ok: tags => tags instanceof Set,
+    map: function (tags) {
+      if (Array.isArray(tags))
+        return new Set(tags);
+      if (tags == null)
+        return new Set();
+      return tags;
+    },
+    msg: 'The `tags` property must be a Set, or an array'
+  }
+};
+
+exports.bookmarkContract = contract(
+  extend(validItem, validTitle, validURL, validTags));
+exports.separatorContract = contract(validItem);
+exports.groupContract = contract(extend(validItem, validTitle));