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LibJS+js: Parse new constructor options from Intl.NumberFormat V3

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This contains minimal changes to parse newly added and modified options
from the Intl.NumberFormat V3 proposal, while maintaining main spec
behavior in Intl.NumberFormat.prototype.format. The parsed options are
reflected only in Intl.NumberFormat.prototype.resolvedOptions and the js
REPL.
This commit is contained in:
Timothy Flynn 2022-07-12 13:18:23 -04:00 • committed by Linus Groh
parent cd8bcd06c6
commit 33698b9615
11 changed files with 589 additions and 75 deletions
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33
Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
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@ -605,6 +605,39 @@ ThrowCompletionOr<Object*> coerce_options_to_object(GlobalObject& global_object,
// NOTE: 9.2.13 GetOption has been removed and is being pulled in from ECMA-262 in the Temporal proposal.
// 1.2.12 GetStringOrBooleanOption ( options, property, values, trueValue, falsyValue, fallback ), https://tc39.es/proposal-intl-numberformat-v3/out/negotiation/proposed.html#sec-getstringorbooleanoption
ThrowCompletionOr<StringOrBoolean> get_string_or_boolean_option(GlobalObject& global_object, Object const& options, PropertyKey const& property, Span<StringView const> values, StringOrBoolean true_value, StringOrBoolean falsy_value, StringOrBoolean fallback)
{
// 1. Let value be ? Get(options, property).
auto value = TRY(options.get(property));
// 2. If value is undefined, return fallback.
if (value.is_undefined())
return fallback;
// 3. If value is true, return trueValue.
if (value.is_boolean() && value.as_bool())
return true_value;
// 4. Let valueBoolean be ToBoolean(value).
auto value_boolean = value.to_boolean();
// 5. If valueBoolean is false, return falsyValue.
if (!value_boolean)
return falsy_value;
// 6. Let value be ? ToString(value).
auto value_string = TRY(value.to_string(global_object));
// 7. If values does not contain an element equal to value, return fallback.
auto it = find(values.begin(), values.end(), value_string);
if (it == values.end())
return fallback;
// 8. Return value.
return StringOrBoolean { *it };
}
// 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)
{