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.
102 lines
4.3 KiB
C++
102 lines
4.3 KiB
C++
/*
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* Copyright (c) 2021-2022, 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/Optional.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <LibJS/Heap/GCPtr.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibLocale/Forward.h>
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namespace JS::Intl {
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class Locale final : public Object {
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JS_OBJECT(Locale, Object);
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JS_DECLARE_ALLOCATOR(Locale);
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public:
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static NonnullGCPtr<Locale> create(Realm&, ::Locale::LocaleID);
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static constexpr auto relevant_extension_keys()
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{
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// 14.2.2 Internal slots, https://tc39.es/ecma402/#sec-intl.locale-internal-slots
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// 1.3.2 Internal slots, https://tc39.es/proposal-intl-locale-info/#sec-intl.locale-internal-slots
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// The value of the [[RelevantExtensionKeys]] internal slot is « "ca", "co", "fw", "hc", "kf", "kn", "nu" ».
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// If %Collator%.[[RelevantExtensionKeys]] does not contain "kf", then remove "kf" from %Locale%.[[RelevantExtensionKeys]].
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// If %Collator%.[[RelevantExtensionKeys]] does not contain "kn", then remove "kn" from %Locale%.[[RelevantExtensionKeys]].
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// FIXME: We do not yet have an Intl.Collator object. For now, we behave as if "kf" and "kn" exist, as test262 depends on it.
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return AK::Array { "ca"sv, "co"sv, "fw"sv, "hc"sv, "kf"sv, "kn"sv, "nu"sv };
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}
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virtual ~Locale() 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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bool has_calendar() const { return m_calendar.has_value(); }
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String const& calendar() const { return m_calendar.value(); }
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void set_calendar(String calendar) { m_calendar = move(calendar); }
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bool has_case_first() const { return m_case_first.has_value(); }
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String const& case_first() const { return m_case_first.value(); }
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void set_case_first(String case_first) { m_case_first = move(case_first); }
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bool has_collation() const { return m_collation.has_value(); }
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String const& collation() const { return m_collation.value(); }
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void set_collation(String collation) { m_collation = move(collation); }
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bool has_first_day_of_week() const { return m_first_day_of_week.has_value(); }
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u8 first_day_of_week() const { return m_first_day_of_week.value(); }
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void set_first_day_of_week(u8 first_day_of_week) { m_first_day_of_week = first_day_of_week; }
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bool has_hour_cycle() const { return m_hour_cycle.has_value(); }
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String const& hour_cycle() const { return m_hour_cycle.value(); }
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void set_hour_cycle(String hour_cycle) { m_hour_cycle = move(hour_cycle); }
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bool has_numbering_system() const { return m_numbering_system.has_value(); }
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String const& numbering_system() const { return m_numbering_system.value(); }
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void set_numbering_system(String numbering_system) { m_numbering_system = move(numbering_system); }
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bool numeric() const { return m_numeric; }
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void set_numeric(bool numeric) { m_numeric = numeric; }
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private:
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explicit Locale(Object& prototype);
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String m_locale; // [[Locale]]
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Optional<String> m_calendar; // [[Calendar]]
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Optional<String> m_case_first; // [[CaseFirst]]
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Optional<String> m_collation; // [[Collation]]
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Optional<u8> m_first_day_of_week; // [[FirstDayOfWeek]]
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Optional<String> m_hour_cycle; // [[HourCycle]]
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Optional<String> m_numbering_system; // [[NumberingSystem]]
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bool m_numeric { false }; // [[Numeric]]
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};
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// Table 1: WeekInfo Record Fields, https://tc39.es/proposal-intl-locale-info/#table-locale-weekinfo-record
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struct WeekInfo {
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u8 minimal_days { 0 }; // [[MinimalDays]]
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u8 first_day { 0 }; // [[FirstDay]]
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Vector<u8> weekend; // [[Weekend]]
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};
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NonnullGCPtr<Array> calendars_of_locale(VM&, Locale const&);
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NonnullGCPtr<Array> collations_of_locale(VM&, Locale const& locale);
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NonnullGCPtr<Array> hour_cycles_of_locale(VM&, Locale const& locale);
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NonnullGCPtr<Array> numbering_systems_of_locale(VM&, Locale const&);
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NonnullGCPtr<Array> time_zones_of_locale(VM&, StringView region);
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StringView character_direction_of_locale(Locale const&);
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Optional<u8> weekday_to_number(StringView);
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StringView weekday_to_string(StringView);
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WeekInfo week_info_of_locale(Locale const&);
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}
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