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LibJS: Change Intl's GetOption AO to accept a Span rather than a Vector
Allocating a Vector for each of these invocations is a bit silly when the values are basically all compile-time arrays. This AO is used even more heavily by Intl.DateTimeFormat, so change it to accept a Span to reduce its cost. This also adds an overload to accept a fixed-size C-array so callers do not have to be prefixed with AK::Array, i.e. this: get_option(..., AK::Array { "a"sv, "b"sv }, ...); Reduces to: get_option(..., { "a"sv, "b"sv }, ...); (Which is how all call sites were already written to construct a Vector in place).
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3 changed files with 12 additions and 5 deletions
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@ -597,7 +597,7 @@ ThrowCompletionOr<Object*> coerce_options_to_object(GlobalObject& global_object,
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}
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// 9.2.13 GetOption ( options, property, type, values, fallback ), https://tc39.es/ecma402/#sec-getoption
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ThrowCompletionOr<Value> get_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Value::Type type, Vector<StringView> const& values, Fallback fallback)
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ThrowCompletionOr<Value> get_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Value::Type type, Span<StringView const> values, Fallback fallback)
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{
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auto& vm = global_object.vm();
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@ -6,6 +6,7 @@
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#pragma once
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#include <AK/Span.h>
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#include <AK/String.h>
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#include <AK/Variant.h>
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#include <AK/Vector.h>
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@ -46,9 +47,15 @@ Vector<String> lookup_supported_locales(Vector<String> const& requested_locales)
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Vector<String> best_fit_supported_locales(Vector<String> const& requested_locales);
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ThrowCompletionOr<Array*> supported_locales(GlobalObject&, Vector<String> const& requested_locales, Value options);
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ThrowCompletionOr<Object*> coerce_options_to_object(GlobalObject& global_object, Value options);
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ThrowCompletionOr<Value> get_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Value::Type type, Vector<StringView> const& values, Fallback fallback);
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ThrowCompletionOr<Value> get_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Value::Type type, Span<StringView const> values, Fallback fallback);
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ThrowCompletionOr<Optional<int>> default_number_option(GlobalObject& global_object, Value value, int minimum, int maximum, Optional<int> fallback);
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ThrowCompletionOr<Optional<int>> get_number_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, int minimum, int maximum, Optional<int> fallback);
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Vector<PatternPartition> partition_pattern(StringView pattern);
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template<size_t Size>
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ThrowCompletionOr<Value> get_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Value::Type type, StringView const (&values)[Size], Fallback fallback)
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{
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return get_option(global_object, options, property, type, Span<StringView const> { values }, fallback);
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}
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}
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@ -26,7 +26,7 @@ struct LocaleAndKeys {
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};
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// Note: This is not an AO in the spec. This just serves to abstract very similar steps in ApplyOptionsToTag and the Intl.Locale constructor.
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static ThrowCompletionOr<Optional<String>> get_string_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Function<bool(StringView)> validator, Vector<StringView> const& values = {})
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static ThrowCompletionOr<Optional<String>> get_string_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Function<bool(StringView)> validator, Span<StringView const> values = {})
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{
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auto& vm = global_object.vm();
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@ -305,11 +305,11 @@ ThrowCompletionOr<Object*> LocaleConstructor::construct(FunctionObject& new_targ
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// 19. Let hc be ? GetOption(options, "hourCycle", "string", « "h11", "h12", "h23", "h24" », undefined).
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// 20. Set opt.[[hc]] to hc.
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opt.hc = TRY(get_string_option(global_object, *options, vm.names.hourCycle, nullptr, { "h11"sv, "h12"sv, "h23"sv, "h24"sv }));
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opt.hc = TRY(get_string_option(global_object, *options, vm.names.hourCycle, nullptr, AK::Array { "h11"sv, "h12"sv, "h23"sv, "h24"sv }));
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// 21. Let kf be ? GetOption(options, "caseFirst", "string", « "upper", "lower", "false" », undefined).
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// 22. Set opt.[[kf]] to kf.
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opt.kf = TRY(get_string_option(global_object, *options, vm.names.caseFirst, nullptr, { "upper"sv, "lower"sv, "false"sv }));
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opt.kf = TRY(get_string_option(global_object, *options, vm.names.caseFirst, nullptr, AK::Array { "upper"sv, "lower"sv, "false"sv }));
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// 23. Let kn be ? GetOption(options, "numeric", "boolean", undefined, undefined).
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auto kn = TRY(get_option(global_object, *options, vm.names.numeric, Value::Type::Boolean, {}, Empty {}));
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