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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 http://mozilla.org/MPL/2.0/. */
#ifndef builtin_intl_PluralRules_h
#define builtin_intl_PluralRules_h
#include "mozilla/Attributes.h"
#include "builtin/SelfHostingDefines.h"
#include "js/Class.h"
#include "js/RootingAPI.h"
#include "vm/NativeObject.h"
struct UFormattedNumber;
struct UNumberFormatter;
struct UPluralRules;
namespace js {
class PluralRulesObject : public NativeObject {
public:
static const JSClass class_;
static const JSClass& protoClass_;
static constexpr uint32_t INTERNALS_SLOT = 0;
static constexpr uint32_t UPLURAL_RULES_SLOT = 1;
static constexpr uint32_t UNUMBER_FORMATTER_SLOT = 2;
static constexpr uint32_t UFORMATTED_NUMBER_SLOT = 3;
static constexpr uint32_t SLOT_COUNT = 4;
static_assert(INTERNALS_SLOT == INTL_INTERNALS_OBJECT_SLOT,
"INTERNALS_SLOT must match self-hosting define for internals "
"object slot");
// Estimated memory use for UNumberFormatter and UFormattedNumber
// (see IcuMemoryUsage).
static constexpr size_t UNumberFormatterEstimatedMemoryUse = 750;
// Estimated memory use for UPluralRules (see IcuMemoryUsage).
static constexpr size_t UPluralRulesEstimatedMemoryUse = 2976;
UPluralRules* getPluralRules() const {
const auto& slot = getFixedSlot(UPLURAL_RULES_SLOT);
if (slot.isUndefined()) {
return nullptr;
}
return static_cast<UPluralRules*>(slot.toPrivate());
}
void setPluralRules(UPluralRules* pluralRules) {
setFixedSlot(UPLURAL_RULES_SLOT, PrivateValue(pluralRules));
}
UNumberFormatter* getNumberFormatter() const {
const auto& slot = getFixedSlot(UNUMBER_FORMATTER_SLOT);
if (slot.isUndefined()) {
return nullptr;
}
return static_cast<UNumberFormatter*>(slot.toPrivate());
}
void setNumberFormatter(UNumberFormatter* formatter) {
setFixedSlot(UNUMBER_FORMATTER_SLOT, PrivateValue(formatter));
}
UFormattedNumber* getFormattedNumber() const {
const auto& slot = getFixedSlot(UFORMATTED_NUMBER_SLOT);
if (slot.isUndefined()) {
return nullptr;
}
return static_cast<UFormattedNumber*>(slot.toPrivate());
}
void setFormattedNumber(UFormattedNumber* formatted) {
setFixedSlot(UFORMATTED_NUMBER_SLOT, PrivateValue(formatted));
}
private:
static const JSClassOps classOps_;
static const ClassSpec classSpec_;
static void finalize(JSFreeOp* fop, JSObject* obj);
};
/**
* Returns a plural rule for the number x according to the effective
* locale and the formatting options of the given PluralRules.
*
* A plural rule is a grammatical category that expresses count distinctions
* (such as "one", "two", "few" etc.).
*
* Usage: rule = intl_SelectPluralRule(pluralRules, x)
*/
extern MOZ_MUST_USE bool intl_SelectPluralRule(JSContext* cx, unsigned argc,
JS::Value* vp);
/**
* Returns an array of plural rules categories for a given pluralRules object.
*
* Usage: categories = intl_GetPluralCategories(pluralRules)
*
* Example:
*
* pluralRules = new Intl.PluralRules('pl', {type: 'cardinal'});
* intl_getPluralCategories(pluralRules); // ['one', 'few', 'many', 'other']
*/
extern MOZ_MUST_USE bool intl_GetPluralCategories(JSContext* cx, unsigned argc,
JS::Value* vp);
} // namespace js
#endif /* builtin_intl_PluralRules_h */
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