Previously, we could only import a type operator with no subsequent
list, i.e.
import Foo ( (:.) )
was fine, but
import Foo ( (:.)(..) )
import Foo ( (:.)((:.) )
import Foo ( (:.)(A, b) )
would all break. Brittany would attempt to output them as
import Foo ( :.(..) )
import Foo ( :.((:.) )
import Foo ( :.(A, b) )
I believe the problem was that although `ieName <$> lie` was returning
an `IEWrappedName` with the same contents as used in `layoutWrapped`,
it had different location annotations; and the parentheses are
apparently saved in the location annotations.
This commit changes infix patterns to utilize `lrdrNameToTextAnn`. This
function allows the logic to avoid introspecting on the constructor
name.
Additionally this adds spaces to all infix operator pattern matches.
Previously infix symbols did not include spaces:
```
foo (x:xs) = _
```
Now they include a space
```
foo (x : xs) = _
```
Brittany was previously only support symbol based infix constructors. It
is common in some libraries (for example Esqueleto) to pattern match on
normal constructors as infix. Brittany was failing in this case by not
wrapping the constructor name in back ticks/spaces. Backticks and spaces
have been added in the case where the constructor contains any alpha
characters.
Rupert Horlick
Phil Hazelden
Lennart Spitzner
Evan Rutledge Borden
sniperrifle2004
Matthew Piziak
Evan Rutledge Borden