Mark fields/globals as const/immutable?

[paul-reilly]

I don't if this is currently possible, or if it's a workable feature request.

I'd like to be able to mark specific fields in a table/class as immutable so that I can get nice error squiggles when trying to assign to them. Same for globals, thinking about global APIs.

This language server really is an excellent addition to the Luasphere btw, thanks!

[sumneko]

Will supports ---@field private xxx number and ---@private in the future.

[paul-reilly]

Thanks for the quick reply.

It might be better to preserve the keyword private for its more expected use in visibility/access modifying rather than to specify immutability.

---@class Foo
---@field private bar 42
---@field const baz 1.618

print(Foo.bar) --<-- error, external access of private field of class Foo
Foo.bar = 3.14 --<-- error, external access of private field of class Foo

print(Foo.baz) --<-- okay
Foo.baz = 3.14 --<-- error, cannot assign new value to const member of class Foo

On the subject of access modifiers, it might be an idea if that is implemented to support the pattern of making variables/consts/function automatically private when their names are prefixed with an underscore.