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.
208 lines
11 KiB
C++
208 lines
11 KiB
C++
/*
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* Copyright (c) 2021-2023, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Array.h>
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#include <AK/String.h>
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#include <AK/StringView.h>
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#include <AK/Time.h>
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#include <AK/Types.h>
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#include <AK/Vector.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/Intl/AbstractOperations.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibLocale/DateTimeFormat.h>
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namespace JS::Intl {
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class DateTimeFormat final
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: public Object
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, public ::Locale::CalendarPattern {
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JS_OBJECT(DateTimeFormat, Object);
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JS_DECLARE_ALLOCATOR(DateTimeFormat);
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using Patterns = ::Locale::CalendarPattern;
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public:
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enum class Style {
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Full,
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Long,
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Medium,
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Short,
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};
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static constexpr auto relevant_extension_keys()
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{
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// 11.2.3 Internal slots, https://tc39.es/ecma402/#sec-intl.datetimeformat-internal-slots
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// The value of the [[RelevantExtensionKeys]] internal slot is « "ca", "hc", "nu" ».
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return AK::Array { "ca"sv, "hc"sv, "nu"sv };
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}
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virtual ~DateTimeFormat() override = default;
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String const& locale() const { return m_locale; }
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void set_locale(String locale) { m_locale = move(locale); }
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String const& data_locale() const { return m_data_locale; }
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void set_data_locale(String data_locale) { m_data_locale = move(data_locale); }
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String const& calendar() const { return m_calendar; }
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void set_calendar(String calendar) { m_calendar = move(calendar); }
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String const& numbering_system() const { return m_numbering_system; }
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void set_numbering_system(String numbering_system) { m_numbering_system = move(numbering_system); }
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bool has_hour_cycle() const { return m_hour_cycle.has_value(); }
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::Locale::HourCycle hour_cycle() const { return *m_hour_cycle; }
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StringView hour_cycle_string() const { return ::Locale::hour_cycle_to_string(*m_hour_cycle); }
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void set_hour_cycle(::Locale::HourCycle hour_cycle) { m_hour_cycle = hour_cycle; }
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void clear_hour_cycle() { m_hour_cycle.clear(); }
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String const& time_zone() const { return m_time_zone; }
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void set_time_zone(String time_zone) { m_time_zone = move(time_zone); }
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bool has_date_style() const { return m_date_style.has_value(); }
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Style date_style() const { return *m_date_style; }
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StringView date_style_string() const { return style_to_string(*m_date_style); }
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void set_date_style(StringView style) { m_date_style = style_from_string(style); }
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bool has_time_style() const { return m_time_style.has_value(); }
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Style time_style() const { return *m_time_style; }
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StringView time_style_string() const { return style_to_string(*m_time_style); }
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void set_time_style(StringView style) { m_time_style = style_from_string(style); }
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String const& pattern() const { return Patterns::pattern; }
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void set_pattern(String pattern) { Patterns::pattern = move(pattern); }
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ReadonlySpan<::Locale::CalendarRangePattern> range_patterns() const { return m_range_patterns.span(); }
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void set_range_patterns(Vector<::Locale::CalendarRangePattern> range_patterns) { m_range_patterns = move(range_patterns); }
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bool has_era() const { return Patterns::era.has_value(); }
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::Locale::CalendarPatternStyle era() const { return *Patterns::era; }
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StringView era_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::era); }
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bool has_year() const { return Patterns::year.has_value(); }
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::Locale::CalendarPatternStyle year() const { return *Patterns::year; }
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StringView year_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::year); }
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bool has_month() const { return Patterns::month.has_value(); }
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::Locale::CalendarPatternStyle month() const { return *Patterns::month; }
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StringView month_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::month); }
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bool has_weekday() const { return Patterns::weekday.has_value(); }
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::Locale::CalendarPatternStyle weekday() const { return *Patterns::weekday; }
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StringView weekday_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::weekday); }
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bool has_day() const { return Patterns::day.has_value(); }
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::Locale::CalendarPatternStyle day() const { return *Patterns::day; }
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StringView day_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::day); }
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bool has_day_period() const { return Patterns::day_period.has_value(); }
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::Locale::CalendarPatternStyle day_period() const { return *Patterns::day_period; }
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StringView day_period_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::day_period); }
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bool has_hour() const { return Patterns::hour.has_value(); }
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::Locale::CalendarPatternStyle hour() const { return *Patterns::hour; }
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StringView hour_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::hour); }
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bool has_minute() const { return Patterns::minute.has_value(); }
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::Locale::CalendarPatternStyle minute() const { return *Patterns::minute; }
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StringView minute_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::minute); }
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bool has_second() const { return Patterns::second.has_value(); }
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::Locale::CalendarPatternStyle second() const { return *Patterns::second; }
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StringView second_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::second); }
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bool has_fractional_second_digits() const { return Patterns::fractional_second_digits.has_value(); }
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u8 fractional_second_digits() const { return *Patterns::fractional_second_digits; }
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bool has_time_zone_name() const { return Patterns::time_zone_name.has_value(); }
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::Locale::CalendarPatternStyle time_zone_name() const { return *Patterns::time_zone_name; }
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StringView time_zone_name_string() const { return ::Locale::calendar_pattern_style_to_string(*Patterns::time_zone_name); }
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NativeFunction* bound_format() const { return m_bound_format; }
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void set_bound_format(NativeFunction* bound_format) { m_bound_format = bound_format; }
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private:
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DateTimeFormat(Object& prototype);
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static Style style_from_string(StringView style);
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static StringView style_to_string(Style style);
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virtual void visit_edges(Visitor&) override;
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String m_locale; // [[Locale]]
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String m_calendar; // [[Calendar]]
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String m_numbering_system; // [[NumberingSystem]]
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Optional<::Locale::HourCycle> m_hour_cycle; // [[HourCycle]]
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String m_time_zone; // [[TimeZone]]
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Optional<Style> m_date_style; // [[DateStyle]]
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Optional<Style> m_time_style; // [[TimeStyle]]
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Vector<::Locale::CalendarRangePattern> m_range_patterns; // [[RangePatterns]]
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GCPtr<NativeFunction> m_bound_format; // [[BoundFormat]]
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String m_data_locale;
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};
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// Table 8: Record returned by ToLocalTime, https://tc39.es/ecma402/#table-datetimeformat-tolocaltime-record
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// Note: [[InDST]] is not included here - it is handled by LibUnicode / LibTimeZone.
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struct LocalTime {
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AK::UnixDateTime time_since_epoch() const
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{
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return AK::UnixDateTime::from_unix_time_parts(year, month + 1, day + 1, hour, minute, second, millisecond);
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}
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int weekday { 0 }; // [[Weekday]]
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::Locale::Era era {}; // [[Era]]
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i32 year { 0 }; // [[Year]]
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Value related_year {}; // [[RelatedYear]]
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Value year_name {}; // [[YearName]]
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u8 month { 0 }; // [[Month]]
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u8 day { 0 }; // [[Day]]
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u8 hour { 0 }; // [[Hour]]
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u8 minute { 0 }; // [[Minute]]
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u8 second { 0 }; // [[Second]]
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u16 millisecond { 0 }; // [[Millisecond]]
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};
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Optional<::Locale::CalendarPattern> date_time_style_format(StringView data_locale, DateTimeFormat& date_time_format);
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Optional<::Locale::CalendarPattern> basic_format_matcher(::Locale::CalendarPattern const& options, Vector<::Locale::CalendarPattern> formats);
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Optional<::Locale::CalendarPattern> best_fit_format_matcher(::Locale::CalendarPattern const& options, Vector<::Locale::CalendarPattern> formats);
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ThrowCompletionOr<Vector<PatternPartition>> format_date_time_pattern(VM&, DateTimeFormat&, Vector<PatternPartition> pattern_parts, double time, ::Locale::CalendarPattern const* range_format_options);
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ThrowCompletionOr<Vector<PatternPartition>> partition_date_time_pattern(VM&, DateTimeFormat&, double time);
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ThrowCompletionOr<String> format_date_time(VM&, DateTimeFormat&, double time);
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ThrowCompletionOr<NonnullGCPtr<Array>> format_date_time_to_parts(VM&, DateTimeFormat&, double time);
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ThrowCompletionOr<Vector<PatternPartitionWithSource>> partition_date_time_range_pattern(VM&, DateTimeFormat&, double start, double end);
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ThrowCompletionOr<String> format_date_time_range(VM&, DateTimeFormat&, double start, double end);
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ThrowCompletionOr<NonnullGCPtr<Array>> format_date_time_range_to_parts(VM&, DateTimeFormat&, double start, double end);
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ThrowCompletionOr<LocalTime> to_local_time(VM&, Crypto::SignedBigInteger const& epoch_ns, StringView calendar, StringView time_zone);
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template<typename Callback>
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ThrowCompletionOr<void> for_each_calendar_field(VM& vm, ::Locale::CalendarPattern& pattern, Callback&& callback)
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{
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constexpr auto narrow_short_long = AK::Array { "narrow"sv, "short"sv, "long"sv };
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constexpr auto two_digit_numeric = AK::Array { "2-digit"sv, "numeric"sv };
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constexpr auto two_digit_numeric_narrow_short_long = AK::Array { "2-digit"sv, "numeric"sv, "narrow"sv, "short"sv, "long"sv };
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constexpr auto time_zone = AK::Array { "short"sv, "long"sv, "shortOffset"sv, "longOffset"sv, "shortGeneric"sv, "longGeneric"sv };
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// Table 6: Components of date and time formats, https://tc39.es/ecma402/#table-datetimeformat-components
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TRY(callback(pattern.weekday, vm.names.weekday, narrow_short_long));
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TRY(callback(pattern.era, vm.names.era, narrow_short_long));
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TRY(callback(pattern.year, vm.names.year, two_digit_numeric));
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TRY(callback(pattern.month, vm.names.month, two_digit_numeric_narrow_short_long));
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TRY(callback(pattern.day, vm.names.day, two_digit_numeric));
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TRY(callback(pattern.day_period, vm.names.dayPeriod, narrow_short_long));
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TRY(callback(pattern.hour, vm.names.hour, two_digit_numeric));
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TRY(callback(pattern.minute, vm.names.minute, two_digit_numeric));
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TRY(callback(pattern.second, vm.names.second, two_digit_numeric));
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TRY(callback(pattern.fractional_second_digits, vm.names.fractionalSecondDigits, Empty {}));
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TRY(callback(pattern.time_zone_name, vm.names.timeZoneName, time_zone));
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return {};
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}
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}
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