diff options
3 files changed, 51 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp index cef22d62d2..5a5c9cda37 100644 --- a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp +++ b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp @@ -5,6 +5,7 @@ */ #include <LibJS/Runtime/GlobalObject.h> +#include <LibJS/Runtime/Temporal/TimeZone.h> #include <LibJS/Runtime/Temporal/TimeZonePrototype.h> namespace JS::Temporal { @@ -21,8 +22,37 @@ void TimeZonePrototype::initialize(GlobalObject& global_object) auto& vm = this->vm(); + u8 attr = Attribute::Writable | Attribute::Configurable; + define_native_function(vm.names.toString, to_string, 0, attr); + // 11.4.2 Temporal.TimeZone.prototype[ @@toStringTag ], https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype-@@tostringtag define_direct_property(*vm.well_known_symbol_to_string_tag(), js_string(vm.heap(), "Temporal.TimeZone"), Attribute::Configurable); } +static TimeZone* typed_this(GlobalObject& global_object) +{ + auto& vm = global_object.vm(); + auto* this_object = vm.this_value(global_object).to_object(global_object); + if (!this_object) + return {}; + if (!is<TimeZone>(this_object)) { + vm.throw_exception<TypeError>(global_object, ErrorType::NotA, "Temporal.TimeZone"); + return {}; + } + return static_cast<TimeZone*>(this_object); +} + +// 11.4.11 Temporal.TimeZone.prototype.toString ( ), https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.tostring +JS_DEFINE_NATIVE_FUNCTION(TimeZonePrototype::to_string) +{ + // 1. Let timeZone be the this value. + // 2. Perform ? RequireInternalSlot(timeZone, [[InitializedTemporalTimeZone]]). + auto* time_zone = typed_this(global_object); + if (vm.exception()) + return {}; + + // 3. Return timeZone.[[Identifier]]. + return js_string(vm, time_zone->identifier()); +} + } diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.h b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.h index 65a748e431..049a803042 100644 --- a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.h +++ b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.h @@ -17,6 +17,9 @@ public: explicit TimeZonePrototype(GlobalObject&); virtual void initialize(GlobalObject&) override; virtual ~TimeZonePrototype() override = default; + +private: + JS_DECLARE_NATIVE_FUNCTION(to_string); }; } diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/TimeZone/TimeZone.prototype.toString.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/TimeZone/TimeZone.prototype.toString.js new file mode 100644 index 0000000000..64b07f6d17 --- /dev/null +++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/TimeZone/TimeZone.prototype.toString.js @@ -0,0 +1,18 @@ +describe("correct behavior", () => { + test("length is 0", () => { + expect(Temporal.TimeZone.prototype.toString).toHaveLength(0); + }); + + test("basic functionality", () => { + const timeZone = new Temporal.TimeZone("UTC"); + expect(timeZone.toString()).toBe("UTC"); + }); +}); + +test("errors", () => { + test("this value must be a Temporal.TimeZone object", () => { + expect(() => { + Temporal.TimeZone.prototype.toString.call("foo"); + }).toThrowWithMessage(TypeError, "Not a Temporal.TimeZone"); + }); +}); |