1 files changed, 147 insertions, 0 deletions
diff --git a/js/src/builtin/intl/CommonFunctions.cpp b/js/src/builtin/intl/CommonFunctions.cpp
new file mode 100644
index 0000000000..f3dcf80522
--- /dev/null
+++ b/js/src/builtin/intl/CommonFunctions.cpp
@@ -0,0 +1,147 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * 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/. */
+
+/* Operations used to implement multiple Intl.* classes. */
+
+#include "builtin/intl/CommonFunctions.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Casting.h"
+#include "mozilla/TextUtils.h"
+
+#include <algorithm>
+
+#include "gc/GCEnum.h"
+#include "gc/Zone.h"
+#include "gc/ZoneAllocator.h"
+#include "js/friend/ErrorMessages.h"  // js::GetErrorMessage, JSMSG_INTERNAL_INTL_ERROR
+#include "js/Value.h"
+#include "unicode/uformattedvalue.h"
+#include "vm/JSContext.h"
+#include "vm/JSObject.h"
+#include "vm/SelfHosting.h"
+#include "vm/Stack.h"
+
+#include "vm/JSObject-inl.h"
+
+bool js::intl::InitializeObject(JSContext* cx, JS::Handle<JSObject*> obj,
+                                JS::Handle<PropertyName*> initializer,
+                                JS::Handle<JS::Value> locales,
+                                JS::Handle<JS::Value> options) {
+  FixedInvokeArgs<3> args(cx);
+
+  args[0].setObject(*obj);
+  args[1].set(locales);
+  args[2].set(options);
+
+  RootedValue ignored(cx);
+  if (!CallSelfHostedFunction(cx, initializer, JS::NullHandleValue, args,
+                              &ignored)) {
+    return false;
+  }
+
+  MOZ_ASSERT(ignored.isUndefined(),
+             "Unexpected return value from non-legacy Intl object initializer");
+  return true;
+}
+
+bool js::intl::LegacyInitializeObject(JSContext* cx, JS::Handle<JSObject*> obj,
+                                      JS::Handle<PropertyName*> initializer,
+                                      JS::Handle<JS::Value> thisValue,
+                                      JS::Handle<JS::Value> locales,
+                                      JS::Handle<JS::Value> options,
+                                      DateTimeFormatOptions dtfOptions,
+                                      JS::MutableHandle<JS::Value> result) {
+  FixedInvokeArgs<5> args(cx);
+
+  args[0].setObject(*obj);
+  args[1].set(thisValue);
+  args[2].set(locales);
+  args[3].set(options);
+  args[4].setBoolean(dtfOptions == DateTimeFormatOptions::EnableMozExtensions);
+
+  if (!CallSelfHostedFunction(cx, initializer, NullHandleValue, args, result)) {
+    return false;
+  }
+
+  MOZ_ASSERT(result.isObject(),
+             "Legacy Intl object initializer must return an object");
+  return true;
+}
+
+JSObject* js::intl::GetInternalsObject(JSContext* cx,
+                                       JS::Handle<JSObject*> obj) {
+  FixedInvokeArgs<1> args(cx);
+
+  args[0].setObject(*obj);
+
+  RootedValue v(cx);
+  if (!js::CallSelfHostedFunction(cx, cx->names().getInternals, NullHandleValue,
+                                  args, &v)) {
+    return nullptr;
+  }
+
+  return &v.toObject();
+}
+
+void js::intl::ReportInternalError(JSContext* cx) {
+  JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr,
+                            JSMSG_INTERNAL_INTL_ERROR);
+}
+
+const js::intl::OldStyleLanguageTagMapping
+    js::intl::oldStyleLanguageTagMappings[] = {
+        {"pa-PK", "pa-Arab-PK"}, {"zh-CN", "zh-Hans-CN"},
+        {"zh-HK", "zh-Hant-HK"}, {"zh-SG", "zh-Hans-SG"},
+        {"zh-TW", "zh-Hant-TW"},
+};
+
+js::UniqueChars js::intl::EncodeLocale(JSContext* cx, JSString* locale) {
+  MOZ_ASSERT(locale->length() > 0);
+
+  js::UniqueChars chars = EncodeAscii(cx, locale);
+
+#ifdef DEBUG
+  // Ensure the returned value contains only valid BCP 47 characters.
+  // (Lambdas can't be placed inside MOZ_ASSERT, so move the checks in an
+  // #ifdef block.)
+  if (chars) {
+    auto alnumOrDash = [](char c) {
+      return mozilla::IsAsciiAlphanumeric(c) || c == '-';
+    };
+    MOZ_ASSERT(mozilla::IsAsciiAlpha(chars[0]));
+    MOZ_ASSERT(
+        std::all_of(chars.get(), chars.get() + locale->length(), alnumOrDash));
+  }
+#endif
+
+  return chars;
+}
+
+void js::intl::AddICUCellMemory(JSObject* obj, size_t nbytes) {
+  // Account the (estimated) number of bytes allocated by an ICU object against
+  // the JSObject's zone.
+  AddCellMemory(obj, nbytes, MemoryUse::ICUObject);
+}
+
+void js::intl::RemoveICUCellMemory(JSFreeOp* fop, JSObject* obj,
+                                   size_t nbytes) {
+  fop->removeCellMemory(obj, nbytes, MemoryUse::ICUObject);
+}
+
+JSString* js::intl::FormattedValueToString(
+    JSContext* cx, const UFormattedValue* formattedValue) {
+  UErrorCode status = U_ZERO_ERROR;
+  int32_t strLength;
+  const char16_t* str = ufmtval_getString(formattedValue, &strLength, &status);
+  if (U_FAILURE(status)) {
+    ReportInternalError(cx);
+    return nullptr;
+  }
+
+  return NewStringCopyN<CanGC>(cx, str,
+                               mozilla::AssertedCast<uint32_t>(strLength));
+}