LibJS: Make Value() default-construct the undefined value

The special empty value (that we use for array holes, Optional<Value>
when empty and a few other other placeholder/sentinel tasks) still
exists, but you now create one via JS::js_special_empty_value() and
check for it with Value::is_special_empty_value().

The main idea here is to make it very unlikely to accidentally create an
unexpected special empty value.
This commit is contained in:
Andreas Kling 2025-04-04 23:16:34 +02:00 committed by Andreas Kling
commit 3cf50539ec
Notes: github-actions[bot] 2025-04-05 09:21:31 +00:00
43 changed files with 165 additions and 122 deletions

View file

@ -91,7 +91,7 @@ static ErrorOr<void, TestError> run_program(InterpreterT& interpreter, ScriptOrM
auto& object = error_value.as_object();
auto name = object.get_without_side_effects("name"_fly_string);
if (!name.is_empty() && !name.is_accessor()) {
if (!name.is_undefined() && !name.is_accessor()) {
error.type = name.to_string_without_side_effects();
} else {
auto constructor = object.get_without_side_effects("constructor"_fly_string);
@ -103,7 +103,7 @@ static ErrorOr<void, TestError> run_program(InterpreterT& interpreter, ScriptOrM
}
auto message = object.get_without_side_effects("message"_fly_string);
if (!message.is_empty() && !message.is_accessor())
if (!message.is_undefined() && !message.is_accessor())
error.details = message.to_string_without_side_effects();
}
if (error.type.is_empty())