Bug 1347801 - Land Fluent MessageContext (Parser, Resolver, Context). r=mossop

This patch lands the core of the new localization API:
 * Parser for the Fluent syntax called "FTL"
 * Resolver for the Fluent logic
 * MessageContext class which is a central class for storing and operating
   on Fluent messages.

MozReview-Commit-ID: E7nKGsLOCJe

--HG--
extra : rebase_source : 893178263744ef6cf6e64c135d28e10a53b61a19

browser/base/content/test/static/browser_all_files_referenced.js

@@ -121,6 +121,9 @@ var whitelist = [
   // Needed by Normandy
   {file: "resource://gre/modules/IndexedDB.jsm"},
 
+  // New L10n API that is not yet used in production
+  {file: "resource://gre/modules/MessageContext.jsm"},
+
   // Starting from here, files in the whitelist are bugs that need fixing.
   // Bug 1339420
   {file: "chrome://branding/content/icon128.png"},

intl/l10n/moz.build

@@ -0,0 +1,13 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+EXTRA_JS_MODULES += [
+    'MessageContext.jsm',
+]
+
+XPCSHELL_TESTS_MANIFESTS += ['test/xpcshell.ini']
+
+FINAL_LIBRARY = 'xul'

intl/l10n/test/test_messagecontext.js

@@ -0,0 +1,39 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function run_test() {
+  const { MessageContext } = Components.utils.import("resource://gre/modules/MessageContext.jsm", {});
+
+  test_methods_presence(MessageContext);
+  test_methods_calling(MessageContext);
+
+  ok(true);
+}
+
+function test_methods_presence(MessageContext) {
+  const ctx = new MessageContext(["en-US", "pl"]);
+  equal(typeof ctx.addMessages, "function");
+  equal(typeof ctx.format, "function");
+  equal(typeof ctx.formatToParts, "function");
+}
+
+function test_methods_calling(MessageContext) {
+  const ctx = new MessageContext(["en-US", "pl"], {
+    useIsolating: false
+  });
+  ctx.addMessages("key = Value");
+
+  const msg = ctx.getMessage("key");
+  equal(ctx.format(msg), "Value");
+  deepEqual(ctx.formatToParts(msg), ["Value"]);
+
+  ctx.addMessages("key2 = Hello { $name }");
+
+  const msg2 = ctx.getMessage("key2");
+  equal(ctx.format(msg2, { name: "Amy" }), "Hello Amy");
+  deepEqual(ctx.formatToParts(msg2), ["Hello ", {
+    value: "name",
+    opts: undefined
+  }]);
+  ok(true);
+}

intl/l10n/test/xpcshell.ini

@@ -0,0 +1,4 @@
+[DEFAULT]
+head =
+
+[test_messagecontext.js]

intl/moz.build

@@ -16,6 +16,7 @@ DIRS += [
     'lwbrk',
     'strres',
     'unicharutil',
+    'l10n',
 ]
 
 DIRS += [