Support record dot syntax #332

New Issue

2020-12-11T17:15:38+01:00

andys8 commented

2020-12-11 17:15:38 +01:00

(Migrated from github.com)

There is a proposal for record dot syntax and the preprocessor.

Although this is probably still early, support for the new syntax would be awesome. One thing I notices is the following:

brittany will take a field access and split it apart because it's parsed as function composition.

x = a.b

x = a . b

For this example, it might be enough to not add whitespaces in this case.

(regarding complete support, there might be more issues)

There is [a proposal for record dot syntax](https://ghc-proposals.readthedocs.io/en/latest/proposals/0282-record-dot-syntax.html) and the [preprocessor](https://hackage.haskell.org/package/record-dot-preprocessor). Although this is probably still early, support for the new syntax would be awesome. One thing I notices is the following: brittany will take a field access and split it apart because it's parsed as function composition. ``` x = a.b ``` ``` x = a . b ``` For this example, it might be enough to not add whitespaces in this case. (regarding complete support, there might be more issues)

👍 1

tfausak commented

2020-12-11 17:41:41 +01:00

(Migrated from github.com)

This will almost certainly require support from ghc-exactprint before Brittany can do anything about it.

👍 1

mrkkrp commented

2020-12-11 19:38:53 +01:00

(Migrated from github.com)

You could check how Ormolu does this. Ormolu only depends on ghc-lib-parser.

You could check how Ormolu does this. Ormolu only depends on `ghc-lib-parser`.

andys8 commented