Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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
#ifndef builtin_temporal_Instant_h
#define builtin_temporal_Instant_h
#include "mozilla/Assertions.h"
#include <stdint.h>
#include "builtin/temporal/TemporalTypes.h"
#include "builtin/temporal/Wrapped.h"
#include "js/TypeDecls.h"
#include "js/Value.h"
#include "vm/NativeObject.h"
namespace js {
struct ClassSpec;
}
namespace js::temporal {
class InstantObject : public NativeObject {
public:
static const JSClass class_;
static const JSClass& protoClass_;
static constexpr uint32_t SECONDS_SLOT = 0;
static constexpr uint32_t NANOSECONDS_SLOT = 1;
static constexpr uint32_t SLOT_COUNT = 2;
int64_t seconds() const {
double seconds = getFixedSlot(SECONDS_SLOT).toNumber();
MOZ_ASSERT(-8'640'000'000'000 <= seconds && seconds <= 8'640'000'000'000);
return int64_t(seconds);
}
int32_t nanoseconds() const {
int32_t nanoseconds = getFixedSlot(NANOSECONDS_SLOT).toInt32();
MOZ_ASSERT(0 <= nanoseconds && nanoseconds <= 999'999'999);
return nanoseconds;
}
private:
static const ClassSpec classSpec_;
};
/**
* Extract the instant fields from the Instant object.
*/
inline Instant ToInstant(const InstantObject* instant) {
return {instant->seconds(), instant->nanoseconds()};
}
class Increment;
enum class TemporalUnit;
enum class TemporalRoundingMode;
/**
* IsValidEpochNanoseconds ( epochNanoseconds )
*/
bool IsValidEpochNanoseconds(const JS::BigInt* epochNanoseconds);
/**
* IsValidEpochNanoseconds ( epochNanoseconds )
*/
bool IsValidEpochInstant(const Instant& instant);
#ifdef DEBUG
/**
* Return true if the input is within the valid instant span limits.
*/
bool IsValidInstantSpan(const InstantSpan& span);
#endif
/**
* Convert a BigInt to an instant. The input must be a valid epoch nanoseconds
* value.
*/
Instant ToInstant(const JS::BigInt* epochNanoseconds);
/**
* Convert an instant to a BigInt. The input must be a valid epoch instant.
*/
JS::BigInt* ToEpochNanoseconds(JSContext* cx, const Instant& instant);
/**
* ToTemporalInstant ( item )
*/
Wrapped<InstantObject*> ToTemporalInstant(JSContext* cx,
JS::Handle<JS::Value> item);
/**
* ToTemporalInstant ( item )
*/
bool ToTemporalInstant(JSContext* cx, JS::Handle<JS::Value> item,
Instant* result);
/**
* CreateTemporalInstant ( epochNanoseconds [ , newTarget ] )
*/
InstantObject* CreateTemporalInstant(JSContext* cx, const Instant& instant);
/**
* GetUTCEpochNanoseconds ( year, month, day, hour, minute, second, millisecond,
* microsecond, nanosecond [ , offsetNanoseconds ] )
*/
Instant GetUTCEpochNanoseconds(const PlainDateTime& dateTime);
/**
* GetUTCEpochNanoseconds ( year, month, day, hour, minute, second, millisecond,
* microsecond, nanosecond [ , offsetNanoseconds ] )
*/
Instant GetUTCEpochNanoseconds(const PlainDateTime& dateTime,
const InstantSpan& offsetNanoseconds);
/**
* RoundTemporalInstant ( ns, increment, unit, roundingMode )
*/
Instant RoundTemporalInstant(const Instant& ns, Increment increment,
TemporalUnit unit,
TemporalRoundingMode roundingMode);
/**
* AddInstant ( epochNanoseconds, norm )
*/
bool AddInstant(JSContext* cx, const Instant& instant,
const NormalizedTimeDuration& duration, Instant* result);
/**
* DifferenceInstant ( ns1, ns2, roundingIncrement, smallestUnit, roundingMode )
*/
NormalizedTimeDuration DifferenceInstant(const Instant& ns1, const Instant& ns2,
Increment roundingIncrement,
TemporalUnit smallestUnit,
TemporalRoundingMode roundingMode);
} /* namespace js::temporal */
#endif /* builtin_temporal_Instant_h */