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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 */
#ifndef builtin_intl_RelativeTimeFormat_h
#define builtin_intl_RelativeTimeFormat_h
#include "mozilla/intl/NumberPart.h"
#include <stdint.h>
#include "builtin/SelfHostingDefines.h"
#include "gc/Barrier.h"
#include "js/Class.h"
#include "vm/NativeObject.h"
namespace mozilla::intl {
class RelativeTimeFormat;
namespace js {
class RelativeTimeFormatObject : public NativeObject {
static const JSClass class_;
static const JSClass& protoClass_;
static constexpr uint32_t INTERNALS_SLOT = 0;
static constexpr uint32_t URELATIVE_TIME_FORMAT_SLOT = 1;
static constexpr uint32_t SLOT_COUNT = 2;
"INTERNALS_SLOT must match self-hosting define for internals "
"object slot");
// Estimated memory use for URelativeDateTimeFormatter (see IcuMemoryUsage).
static constexpr size_t EstimatedMemoryUse = 8188;
mozilla::intl::RelativeTimeFormat* getRelativeTimeFormatter() const {
const auto& slot = getFixedSlot(URELATIVE_TIME_FORMAT_SLOT);
if (slot.isUndefined()) {
return nullptr;
return static_cast<mozilla::intl::RelativeTimeFormat*>(slot.toPrivate());
void setRelativeTimeFormatter(mozilla::intl::RelativeTimeFormat* rtf) {
setFixedSlot(URELATIVE_TIME_FORMAT_SLOT, PrivateValue(rtf));
static const JSClassOps classOps_;
static const ClassSpec classSpec_;
static void finalize(JS::GCContext* gcx, JSObject* obj);
* Returns a relative time as a string formatted according to the effective
* locale and the formatting options of the given RelativeTimeFormat.
* |t| should be a number representing a number to be formatted.
* |unit| should be "second", "minute", "hour", "day", "week", "month",
* "quarter", or "year".
* |numeric| should be "always" or "auto".
* Usage: formatted = intl_FormatRelativeTime(relativeTimeFormat, t,
* unit, numeric, formatToParts)
[[nodiscard]] extern bool intl_FormatRelativeTime(JSContext* cx, unsigned argc,
JS::Value* vp);
namespace intl {
using FieldType = js::ImmutableTenuredPtr<PropertyName*> JSAtomState::*;
[[nodiscard]] bool FormattedRelativeTimeToParts(
JSContext* cx, HandleString str,
const mozilla::intl::NumberPartVector& parts, FieldType relativeTimeUnit,
MutableHandleValue result);
} // namespace intl
} // namespace js
#endif /* builtin_intl_RelativeTimeFormat_h */