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LibJS: Stop using Optional<Value> in favor of Value's empty state

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JS::Value already has the empty state ({} or Value() gives you one.)
Use this instead of wrapping Value in Optional in some places.
I've also added Value::value_or(Value) so you can easily provide a
fallback value when one is not present.
This commit is contained in:
Andreas Kling 2020-04-25 18:43:34 +02:00
parent 5adf4901df
commit 35aea2e454
14 changed files with 60 additions and 48 deletions
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2
Libraries/LibJS/Interpreter.cpp
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@ -151,7 +151,7 @@ void Interpreter::set_variable(const FlyString& name, Value value, bool first_as
global_object().put(move(name), move(value));
}
Optional<Value> Interpreter::get_variable(const FlyString& name)
Value Interpreter::get_variable(const FlyString& name)
{
if (m_call_stack.size()) {
for (auto* environment = current_environment(); environment; environment = environment->parent()) {