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86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
/*
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* Copyright (c) 2021-2022, Idan Horowitz <idan.horowitz@serenityos.org>
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* Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
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* Copyright (c) 2024, Tim Flynn <trflynn89@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/PropertyKey.h>
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#include <LibJS/Runtime/Temporal/AbstractOperations.h>
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namespace JS::Temporal {
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// 14.4.1.1 GetOptionsObject ( options ), https://tc39.es/proposal-temporal/#sec-getoptionsobject
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ThrowCompletionOr<GC::Ref<Object>> get_options_object(VM& vm, Value options)
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{
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auto& realm = *vm.current_realm();
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// 1. If options is undefined, then
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if (options.is_undefined()) {
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// a. Return OrdinaryObjectCreate(null).
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return Object::create(realm, nullptr);
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}
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// 2. If options is an Object, then
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if (options.is_object()) {
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// a. Return options.
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return options.as_object();
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}
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// 3. Throw a TypeError exception.
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return vm.throw_completion<TypeError>(ErrorType::NotAnObject, "Options");
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}
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// 14.4.1.2 GetOption ( options, property, type, values, default ), https://tc39.es/proposal-temporal/#sec-getoption
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ThrowCompletionOr<Value> get_option(VM& vm, Object const& options, PropertyKey const& property, OptionType type, ReadonlySpan<StringView> values, OptionDefault const& default_)
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{
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VERIFY(property.is_string());
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// 1. Let value be ? Get(options, property).
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auto value = TRY(options.get(property));
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// 2. If value is undefined, then
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if (value.is_undefined()) {
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// a. If default is REQUIRED, throw a RangeError exception.
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if (default_.has<DefaultRequired>())
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return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, "undefined"sv, property.as_string());
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// b. Return default.
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return default_.visit(
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[](DefaultRequired) -> Value { VERIFY_NOT_REACHED(); },
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[](Empty) -> Value { return js_undefined(); },
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[](bool default_) -> Value { return Value { default_ }; },
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[](double default_) -> Value { return Value { default_ }; },
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[&](StringView default_) -> Value { return PrimitiveString::create(vm, default_); });
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}
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// 3. If type is BOOLEAN, then
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if (type == OptionType::Boolean) {
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// a. Set value to ToBoolean(value).
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value = Value { value.to_boolean() };
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}
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// 4. Else,
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else {
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// a. Assert: type is STRING.
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VERIFY(type == OptionType::String);
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// b. Set value to ? ToString(value).
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value = TRY(value.to_primitive_string(vm));
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}
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// 5. If values is not EMPTY and values does not contain value, throw a RangeError exception.
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if (!values.is_empty()) {
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// NOTE: Every location in the spec that invokes GetOption with type=boolean also has values=undefined.
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VERIFY(value.is_string());
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if (auto value_string = value.as_string().utf8_string(); !values.contains_slow(value_string))
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return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, value_string, property.as_string());
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}
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// 6. Return value.
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return value;
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}
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}
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