Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Get field name from attribute when pattern matching #6456

Merged
merged 4 commits into from
Oct 30, 2023
Merged

Get field name from attribute when pattern matching #6456

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
8340898
Get field name from attribute when pattern matching
shulhi Oct 29, 2023
a5afe91
Move find_name to matching so it can be shared
shulhi Oct 30, 2023
75fe6b1
Add addtional prop to the test
shulhi Oct 30, 2023
a37ea17
Update changelog
shulhi Oct 30, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 15 additions & 1 deletion jscomp/ml/matching.ml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,19 @@ open Printf

let dbg = false

let find_name (attr : Parsetree.attribute) =
Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This is similar to find_name in jscomp/core/record_attributes_check.ml. I prefer if this can be extracted to a common place where both places can use the same function, not sure where though.

Copy link
Collaborator

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Looks identical. Can't you use the one from record_attributes_check.ml?

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Looks identical. Can't you use the one from record_attributes_check.ml?

I tried, but record_attributes_check.ml is in the core package, and trying to import it from ml causes a circular import.

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I tried, but record_attributes_check.ml is in the core package, and trying to import it from ml causes a circular import.

Sorry I'm an idiot, I can reverse the dependency 🤦

match attr with
| ( { txt = "bs.as" | "as" },
PStr
[
{
pstr_desc =
Pstr_eval ({ pexp_desc = Pexp_constant (Pconst_string (s, _)) }, _);
};
] ) ->
Some s
| _ -> None

(* See Peyton-Jones, ``The Implementation of functional programming
languages'', chapter 5. *)
(*
Expand Down Expand Up @@ -1601,7 +1614,8 @@ let make_record_matching loc all_labels def = function
| Record_regular | Record_optional_labels _ ->
Lprim (Pfield (lbl.lbl_pos, !Lambda.fld_record lbl), [arg], loc)
| Record_inlined _ ->
Lprim (Pfield (lbl.lbl_pos, Fld_record_inline {name = lbl.lbl_name}), [arg], loc)
let name = Ext_list.find_def lbl.lbl_attributes find_name lbl.lbl_name in
Lprim (Pfield (lbl.lbl_pos, Fld_record_inline {name}), [arg], loc)
| Record_unboxed _ -> arg
| Record_extension -> Lprim (Pfield (lbl.lbl_pos + 1, Fld_record_extension {name = lbl.lbl_name}), [arg], loc)
in
Expand Down
5 changes: 5 additions & 0 deletions jscomp/test/as_inline_record_test.js
View file
Open in desktop

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

5 changes: 5 additions & 0 deletions jscomp/test/as_inline_record_test.res
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,3 +5,8 @@ type user =
})

let user = User({name: "Corentin"})

let getName = t =>
switch t {
| User({name}) => name
}