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author | Tom Smeding <tom.smeding@gmail.com> | 2020-07-24 18:34:28 +0200 |
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committer | Tom Smeding <tom.smeding@gmail.com> | 2020-07-24 19:02:21 +0200 |
commit | 5cb19c0df3f838965c1100731f9118f28f50796f (patch) | |
tree | 89a2cbfeed5de5f9a26238321610c3fd58e533b9 /utils | |
parent | a9134688a2132c8f9abfff206f6e30614bb9aeff (diff) |
Working basic type checker using Algorithm W
Diffstat (limited to 'utils')
-rw-r--r-- | utils/CC/IdSupply.hs | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/utils/CC/IdSupply.hs b/utils/CC/IdSupply.hs deleted file mode 100644 index 234f6cc..0000000 --- a/utils/CC/IdSupply.hs +++ /dev/null @@ -1,29 +0,0 @@ -module CC.IdSupply(IdSupply, runIdSupply, genId) where - -import Control.Monad.Trans - - -data IdSupply a = IdSupply (Int -> (Int, a)) - -instance Functor IdSupply where - fmap f (IdSupply act) = IdSupply (fmap f . act) - -instance Applicative IdSupply where - pure x = IdSupply (\idval -> (idval, x)) - IdSupply f <*> IdSupply x = - IdSupply (\idval -> let (idval', f') = f idval - in f' <$> x idval') - -instance Monad IdSupply where - IdSupply x >>= f = - IdSupply (\idval -> let (idval', x') = x idval - IdSupply res = f x' - in res idval') - -instance MonadTrans - -runIdSupply :: Int -> IdSupply a -> a -runIdSupply startid (IdSupply f) = snd (f startid) - -genId :: IdSupply Int -genId = IdSupply (\idval -> (idval + 1, idval)) |