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LibJS: Update to the latest ECMA-402 GetOption and move it into ECMA-262

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This is an editorial change in the Temporal spec.

See: 4e79b69
This commit is contained in:
Linus Groh 2022-06-14 23:03:25 +01:00
parent 46d2ac6da4
commit 71a519831d
13 changed files with 90 additions and 119 deletions
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46
Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
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@ -571,7 +571,7 @@ ThrowCompletionOr<Array*> supported_locales(GlobalObject& global_object, Vector<
auto* options_object = TRY(coerce_options_to_object(global_object, options));
// 2. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
auto matcher = TRY(get_option(global_object, *options_object, vm.names.localeMatcher, Value::Type::String, { "lookup"sv, "best fit"sv }, "best fit"sv));
auto matcher = TRY(get_option(global_object, *options_object, vm.names.localeMatcher, OptionType::String, { "lookup"sv, "best fit"sv }, "best fit"sv));
Vector<String> supported_locales;
@ -603,49 +603,7 @@ ThrowCompletionOr<Object*> coerce_options_to_object(GlobalObject& global_object,
return TRY(options.to_object(global_object));
}
// 9.2.13 GetOption ( options, property, type, values, fallback ), https://tc39.es/ecma402/#sec-getoption
ThrowCompletionOr<Value> get_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Value::Type type, Span<StringView const> values, Fallback fallback)
{
auto& vm = global_object.vm();
// 1. Assert: Type(options) is Object.
// 2. Let value be ? Get(options, property).
auto value = TRY(options.get(property));
// 3. If value is undefined, return fallback.
if (value.is_undefined()) {
return fallback.visit(
[](Empty) { return js_undefined(); },
[](bool f) { return Value(f); },
[&vm](StringView f) { return Value(js_string(vm, f)); });
}
// 4. Assert: type is "boolean" or "string".
VERIFY((type == Value::Type::Boolean) || (type == Value::Type::String));
// 5. If type is "boolean", then
if (type == Value::Type::Boolean) {
// a. Set value to ToBoolean(value).
value = Value(value.to_boolean());
}
// 6. If type is "string", then
else {
// a. Set value to ? ToString(value).
value = TRY(value.to_primitive_string(global_object));
}
// 7. If values is not undefined and values does not contain an element equal to value, throw a RangeError exception.
if (!values.is_empty()) {
// Note: Every location in the spec that invokes GetOption with type=boolean also has values=undefined.
VERIFY(value.is_string());
if (!values.contains_slow(value.as_string().string()))
return vm.throw_completion<RangeError>(global_object, ErrorType::OptionIsNotValidValue, value.to_string_without_side_effects(), property.as_string());
}
// 8. Return value.
return value;
}
// NOTE: 9.2.13 GetOption has been removed and is being pulled in from ECMA-262 in the Temporal proposal.
// 9.2.14 DefaultNumberOption ( value, minimum, maximum, fallback ), https://tc39.es/ecma402/#sec-defaultnumberoption
ThrowCompletionOr<Optional<int>> default_number_option(GlobalObject& global_object, Value value, int minimum, int maximum, Optional<int> fallback)