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.
92 lines
3.5 KiB
C++
92 lines
3.5 KiB
C++
/*
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* Copyright (c) 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/String.h>
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#include <AK/StringView.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/Locale.h>
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#include <LibLocale/RelativeTimeFormat.h>
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namespace JS::Intl {
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class RelativeTimeFormat final : public Object {
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JS_OBJECT(RelativeTimeFormat, Object);
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JS_DECLARE_ALLOCATOR(RelativeTimeFormat);
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public:
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enum class Numeric {
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Always,
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Auto,
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};
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static constexpr auto relevant_extension_keys()
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{
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// 17.2.3 Internal slots, https://tc39.es/ecma402/#sec-Intl.RelativeTimeFormat-internal-slots
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// The value of the [[RelevantExtensionKeys]] internal slot is « "nu" ».
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return AK::Array { "nu"sv };
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}
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virtual ~RelativeTimeFormat() 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& 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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::Locale::Style style() const { return m_style; }
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void set_style(StringView style) { m_style = ::Locale::style_from_string(style); }
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StringView style_string() const { return ::Locale::style_to_string(m_style); }
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Numeric numeric() const { return m_numeric; }
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void set_numeric(StringView numeric);
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StringView numeric_string() const;
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NumberFormat& number_format() const { return *m_number_format; }
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void set_number_format(NumberFormat* number_format) { m_number_format = number_format; }
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PluralRules& plural_rules() const { return *m_plural_rules; }
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void set_plural_rules(PluralRules* plural_rules) { m_plural_rules = plural_rules; }
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private:
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explicit RelativeTimeFormat(Object& prototype);
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virtual void visit_edges(Cell::Visitor&) override;
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String m_locale; // [[Locale]]
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String m_data_locale; // [[DataLocale]]
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String m_numbering_system; // [[NumberingSystem]]
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::Locale::Style m_style { ::Locale::Style::Long }; // [[Style]]
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Numeric m_numeric { Numeric::Always }; // [[Numeric]]
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GCPtr<NumberFormat> m_number_format; // [[NumberFormat]]
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GCPtr<PluralRules> m_plural_rules; // [[PluralRules]]
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};
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struct PatternPartitionWithUnit : public PatternPartition {
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PatternPartitionWithUnit(StringView type, String value, StringView unit_string = {})
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: PatternPartition(type, move(value))
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, unit(unit_string)
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{
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}
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StringView unit;
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};
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ThrowCompletionOr<::Locale::TimeUnit> singular_relative_time_unit(VM&, StringView unit);
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ThrowCompletionOr<Vector<PatternPartitionWithUnit>> partition_relative_time_pattern(VM&, RelativeTimeFormat&, double value, StringView unit);
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Vector<PatternPartitionWithUnit> make_parts_list(StringView pattern, StringView unit, Vector<PatternPartition> parts);
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ThrowCompletionOr<String> format_relative_time(VM&, RelativeTimeFormat&, double value, StringView unit);
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ThrowCompletionOr<NonnullGCPtr<Array>> format_relative_time_to_parts(VM&, RelativeTimeFormat&, double value, StringView unit);
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}
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