2398: WIP: introduce hir::Type r=matklad a=matklad
This introduces `hir::Type` wrapper over `hir::Ty`, with two purposes:
* bind `Ty` and it's corresponding environment
* Am I correct that `Ty` without an env doesn't make much sense, because the meaning of type parameters is unclear
* Am I correct that we can safely re-use the same environment for all types derived from the given type?
* hide representation defails of `Ty`. Specifically, I want to change `Ty::Adt` to use `hir_def::AdtId` instead of `hir::Adt`, but IDE doesn't know about underlying IDs. More generally, I feel like IDE shouldn't know that `Ty` is enum.
@flodiebold what do you think about this?
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
Although structs and unions have the same syntax and differ only in
the keyword, re-using the single syntax node for both of them leads to
confusion in practice, and propagates further down the hir in an
upleasent way.
Moreover, static and consts also share syntax, but we use different
nodes for them.
2388: Show missing struct fields in the error message r=matklad a=Frizi
This provides the most interesting information about the "missing structure fields" error directly to the user.
Co-authored-by: Frizi <frizi09@gmail.com>
2362: Expand compile_error! r=edwin0cheng a=kjeremy
Does not validate that the input is a string literal. I thought that I could `match_ast!` against the `macro_args` but that did not work. Even if it had I am not sure which error would be appropriate.
Co-authored-by: Jeremy Kolb <kjeremy@gmail.com>
2392: Fix panic during the expansion of `column!` r=edwin0cheng a=marcogroppo
Fixes#2379. Well, this isn't the "proper" fix but it doesn't hurt, IMHO.
The problem is that `to_col_number`, called by `column_expand`, receives a position number that isn't included in the text range of the file. My (very limited) understanding is that the text is the one of the original file, while `pos` is relative to something else, probably the text of the macro. Notice that in this case the `column!` expansion seems to be triggered by `assert_eq!`, so we're in the middle of another expansion. This PR simply avoids the panic by checking the length of the text.
r? @edwin0cheng
Co-authored-by: Marco Groppo <marco.groppo@gmail.com>
