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LibJS: Add Date.prototype[@@toPrimitive]()
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3 changed files with 26 additions and 0 deletions
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@ -82,6 +82,8 @@ void DatePrototype::initialize(GlobalObject& global_object)
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define_native_function(vm.names.toTimeString, to_time_string, 0, attr);
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define_native_function(vm.names.toString, to_string, 0, attr);
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define_native_function(vm.well_known_symbol_to_primitive(), symbol_to_primitive, 1, Attribute::Configurable);
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// Aliases.
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define_native_function(vm.names.valueOf, get_time, 0, attr);
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@ -762,4 +764,26 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_string)
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return js_string(vm, move(string));
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}
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JS_DEFINE_NATIVE_FUNCTION(DatePrototype::symbol_to_primitive)
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{
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auto this_value = vm.this_value(global_object);
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if (!this_value.is_object()) {
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vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObject);
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return {};
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}
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auto hint = vm.argument(0).to_string(global_object);
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if (vm.exception())
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return {};
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Value::PreferredType try_first;
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if (hint == "string" || hint == "default") {
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try_first = Value::PreferredType::String;
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} else if (hint == "number") {
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try_first = Value::PreferredType::Number;
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} else {
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vm.throw_exception<TypeError>(global_object, ErrorType::InvalidHint, hint);
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return {};
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}
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return this_value.as_object().ordinary_to_primitive(try_first);
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}
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}
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@ -56,6 +56,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(to_locale_time_string);
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JS_DECLARE_NATIVE_FUNCTION(to_time_string);
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JS_DECLARE_NATIVE_FUNCTION(to_string);
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JS_DECLARE_NATIVE_FUNCTION(symbol_to_primitive);
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};
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}
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@ -30,6 +30,7 @@
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M(InOperatorWithObject, "'in' operator must be used on an object") \
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M(InstanceOfOperatorBadPrototype, "'prototype' property of {} is not an object") \
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M(InvalidAssignToConst, "Invalid assignment to const variable") \
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M(InvalidHint, "Invalid hint: \"{}\"") \
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M(InvalidIndex, "Index must be a positive integer") \
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M(InvalidLeftHandAssignment, "Invalid left-hand side in assignment") \
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M(InvalidLength, "Invalid {} length") \
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