3c74dc9f4d
This patch adds two macros to declare per-type allocators: - JS_DECLARE_ALLOCATOR(TypeName) - JS_DEFINE_ALLOCATOR(TypeName) When used, they add a type-specific CellAllocator that the Heap will delegate allocation requests to. The result of this is that GC objects of the same type always end up within the same HeapBlock, drastically reducing the ability to perform type confusion attacks. It also improves HeapBlock utilization, since each block now has cells sized exactly to the type used within that block. (Previously we only had a handful of block sizes available, and most GC allocations ended up with a large amount of slack in their tails.) There is a small performance hit from this, but I'm sure we can make up for it elsewhere. Note that the old size-based allocators still exist, and we fall back to them for any type that doesn't have its own CellAllocator.
88 lines
3.2 KiB
C++
88 lines
3.2 KiB
C++
/*
|
|
* Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>
|
|
* Copyright (c) 2022-2023, Tim Flynn <trflynn89@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <LibCrypto/BigInt/SignedBigInteger.h>
|
|
#include <LibJS/Runtime/Object.h>
|
|
|
|
namespace JS {
|
|
|
|
class Date final : public Object {
|
|
JS_OBJECT(Date, Object);
|
|
JS_DECLARE_ALLOCATOR(Date);
|
|
|
|
public:
|
|
static NonnullGCPtr<Date> create(Realm&, double date_value);
|
|
|
|
virtual ~Date() override = default;
|
|
|
|
double date_value() const { return m_date_value; }
|
|
void set_date_value(double value) { m_date_value = value; }
|
|
|
|
ErrorOr<String> iso_date_string() const;
|
|
|
|
private:
|
|
Date(double date_value, Object& prototype);
|
|
|
|
double m_date_value { 0 }; // [[DateValue]]
|
|
};
|
|
|
|
// 21.4.1.22 Time Zone Identifier Record, https://tc39.es/ecma262/#sec-time-zone-identifier-record
|
|
struct TimeZoneIdentifier {
|
|
StringView identifier; // [[Identifier]]
|
|
StringView primary_identifier; // [[PrimaryIdentifier]]
|
|
};
|
|
|
|
// https://tc39.es/ecma262/#eqn-HoursPerDay
|
|
constexpr inline double hours_per_day = 24;
|
|
// https://tc39.es/ecma262/#eqn-MinutesPerHour
|
|
constexpr inline double minutes_per_hour = 60;
|
|
// https://tc39.es/ecma262/#eqn-SecondsPerMinute
|
|
constexpr inline double seconds_per_minute = 60;
|
|
// https://tc39.es/ecma262/#eqn-msPerSecond
|
|
constexpr inline double ms_per_second = 1'000;
|
|
// https://tc39.es/ecma262/#eqn-msPerMinute
|
|
constexpr inline double ms_per_minute = 60'000;
|
|
// https://tc39.es/ecma262/#eqn-msPerHour
|
|
constexpr inline double ms_per_hour = 3'600'000;
|
|
// https://tc39.es/ecma262/#eqn-msPerDay
|
|
constexpr inline double ms_per_day = 86'400'000;
|
|
// https://tc39.es/proposal-temporal/#eqn-nsPerDay
|
|
constexpr inline double ns_per_day = 86'400'000'000'000;
|
|
extern Crypto::SignedBigInteger const ns_per_day_bigint;
|
|
|
|
double day(double);
|
|
double time_within_day(double);
|
|
u16 days_in_year(i32);
|
|
double day_from_year(i32);
|
|
double time_from_year(i32);
|
|
i32 year_from_time(double);
|
|
u16 day_within_year(double);
|
|
bool in_leap_year(double);
|
|
u8 month_from_time(double);
|
|
u8 date_from_time(double);
|
|
u8 week_day(double);
|
|
u8 hour_from_time(double);
|
|
u8 min_from_time(double);
|
|
u8 sec_from_time(double);
|
|
u16 ms_from_time(double);
|
|
Crypto::SignedBigInteger get_utc_epoch_nanoseconds(i32 year, u8 month, u8 day, u8 hour, u8 minute, u8 second, u16 millisecond, u16 microsecond, u16 nanosecond);
|
|
Vector<Crypto::SignedBigInteger> get_named_time_zone_epoch_nanoseconds(StringView time_zone_identifier, i32 year, u8 month, u8 day, u8 hour, u8 minute, u8 second, u16 millisecond, u16 microsecond, u16 nanosecond);
|
|
i64 get_named_time_zone_offset_nanoseconds(StringView time_zone_identifier, Crypto::SignedBigInteger const& epoch_nanoseconds);
|
|
Vector<TimeZoneIdentifier> available_named_time_zone_identifiers();
|
|
StringView system_time_zone_identifier();
|
|
double local_time(double time);
|
|
double utc_time(double time);
|
|
double make_time(double hour, double min, double sec, double ms);
|
|
double make_day(double year, double month, double date);
|
|
double make_date(double day, double time);
|
|
double time_clip(double time);
|
|
bool is_time_zone_offset_string(StringView offset_string);
|
|
double parse_time_zone_offset_string(StringView offset_string);
|
|
|
|
}
|