1 files changed, 115 insertions, 0 deletions
diff --git a/toolkit/components/mozintl/MozIntlHelper.cpp b/toolkit/components/mozintl/MozIntlHelper.cpp
new file mode 100644
index 0000000000..84e192f3dd
--- /dev/null
+++ b/toolkit/components/mozintl/MozIntlHelper.cpp
@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode:nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#include "MozIntlHelper.h"
+#include "nsBidiUtils.h"
+#include "nsJSUtils.h"
+#include "jsapi.h"
+#include "js/experimental/Intl.h"   // JS::AddMozDateTimeFormatConstructor
+#include "js/PropertyAndElement.h"  // JS_DefineFunctions
+#include "js/PropertySpec.h"
+#include "js/Wrapper.h"
+
+using namespace mozilla;
+
+NS_IMPL_ISUPPORTS(MozIntlHelper, mozIMozIntlHelper)
+
+MozIntlHelper::MozIntlHelper() = default;
+
+MozIntlHelper::~MozIntlHelper() = default;
+
+static nsresult AddFunctions(JSContext* cx, JS::Handle<JS::Value> val,
+                             const JSFunctionSpec* funcs) {
+  if (!val.isObject()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // We might be adding functions to a Window.
+  JS::Rooted<JSObject*> realIntlObj(
+      cx, js::CheckedUnwrapDynamic(&val.toObject(), cx));
+  if (!realIntlObj) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  JSAutoRealm ar(cx, realIntlObj);
+
+  if (!JS_DefineFunctions(cx, realIntlObj, funcs)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MozIntlHelper::AddGetCalendarInfo(JS::Handle<JS::Value> val, JSContext* cx) {
+  static const JSFunctionSpec funcs[] = {
+      JS_SELF_HOSTED_FN("getCalendarInfo", "Intl_getCalendarInfo", 1, 0),
+      JS_FS_END};
+
+  return AddFunctions(cx, val, funcs);
+}
+
+NS_IMETHODIMP
+MozIntlHelper::AddDateTimeFormatConstructor(JS::Handle<JS::Value> val,
+                                            JSContext* cx) {
+  if (!val.isObject()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // We might be adding this constructor to a Window
+  JS::Rooted<JSObject*> realIntlObj(
+      cx, js::CheckedUnwrapDynamic(&val.toObject(), cx));
+  if (!realIntlObj) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  JSAutoRealm ar(cx, realIntlObj);
+
+  if (!JS::AddMozDateTimeFormatConstructor(cx, realIntlObj)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MozIntlHelper::AddDisplayNamesConstructor(JS::Handle<JS::Value> val,
+                                          JSContext* cx) {
+  if (!val.isObject()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // We might be adding this constructor to a Window
+  JS::Rooted<JSObject*> realIntlObj(
+      cx, js::CheckedUnwrapDynamic(&val.toObject(), cx));
+  if (!realIntlObj) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  JSAutoRealm ar(cx, realIntlObj);
+
+  if (!JS::AddMozDisplayNamesConstructor(cx, realIntlObj)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MozIntlHelper::StringHasRTLChars(JS::Handle<JS::Value> str, JSContext* cx,
+                                 bool* res) {
+  if (!str.isString()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsAutoJSString string;
+  if (!string.init(cx, str)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *res = HasRTLChars(
+      Span(static_cast<const char16_t*>(string.get()), string.Length()));
+  return NS_OK;
+}