graphql-engine/server/src-lib/Data/GADT/Compare/Extended.hs
Robert 11a454c2d6 server, pro: actually reformat the code-base using ormolu
This commit applies ormolu to the whole Haskell code base by running `make format`.

For in-flight branches, simply merging changes from `main` will result in merge conflicts.
To avoid this, update your branch using the following instructions. Replace `<format-commit>`
by the hash of *this* commit.

$ git checkout my-feature-branch
$ git merge <format-commit>^    # and resolve conflicts normally
$ make format
$ git commit -a -m "reformat with ormolu"
$ git merge -s ours post-ormolu

https://github.com/hasura/graphql-engine-mono/pull/2404

GitOrigin-RevId: 75049f5c12f430c615eafb4c6b8e83e371e01c8e
2021-09-23 22:57:37 +00:00

32 lines
697 B
Haskell

{-# LANGUAGE PolyKinds #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
module Data.GADT.Compare.Extended
( module Data.GADT.Compare,
strengthenOrdering,
extendGOrdering,
)
where
import Data.GADT.Compare
import Type.Reflection
import Prelude
instance GEq ((:~~:) a) where
geq HRefl HRefl = Just Refl
instance GCompare ((:~~:) a) where
gcompare HRefl HRefl = GEQ
strengthenOrdering :: Ordering -> GOrdering a a
strengthenOrdering LT = GLT
strengthenOrdering EQ = GEQ
strengthenOrdering GT = GGT
infixr 6 `extendGOrdering`
extendGOrdering :: GOrdering a b -> (a ~ b => GOrdering c d) -> GOrdering c d
extendGOrdering GLT _ = GLT
extendGOrdering GEQ x = x
extendGOrdering GGT _ = GGT