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/* -*- 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 */
/* Operations used to implement multiple Intl.* classes. */
#include "builtin/intl/CommonFunctions.h"
#include "mozilla/Assertions.h"
#include "mozilla/TextUtils.h"
#include <algorithm>
#include "jsfriendapi.h" // for GetErrorMessage, JSMSG_INTERNAL_INTL_ERROR
#include "gc/GCEnum.h"
#include "gc/Zone.h"
#include "gc/ZoneAllocator.h"
#include "js/Value.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);
RootedValue ignored(cx);
if (!CallSelfHostedFunction(cx, initializer, JS::NullHandleValue, args,
&ignored)) {
return false;
"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[4].setBoolean(dtfOptions == DateTimeFormatOptions::EnableMozExtensions);
if (!CallSelfHostedFunction(cx, initializer, NullHandleValue, args, result)) {
return false;
"Legacy Intl object initializer must return an object");
return true;
JSObject* js::intl::GetInternalsObject(JSContext* cx,
JS::Handle<JSObject*> obj) {
FixedInvokeArgs<1> args(cx);
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,
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 == '-';
std::all_of(chars.get(), chars.get() + locale->length(), alnumOrDash));
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);
// Manually trigger malloc zone GCs in case there's memory pressure and
// collecting any unreachable Intl objects could free ICU allocated memory.
// (ICU allocations use the system memory allocator, so we can't rely on
// ZoneAllocPolicy to call |maybeMallocTriggerZoneGC|.)
void js::intl::RemoveICUCellMemory(JSFreeOp* fop, JSObject* obj,
size_t nbytes) {
fop->removeCellMemory(obj, nbytes, MemoryUse::ICUObject);