Re-do the arity calculation mechanism again (fix Trac #3959)

[ghc-hetmet.git] / compiler / types / Type.lhs

diff --git a/compiler/types/Type.lhs b/compiler/types/Type.lhs
index 8a9cf0e..8817222 100644 (file)
--- a/compiler/types/Type.lhs
+++ b/compiler/types/Type.lhs
@@ -30,7 +30,7 @@ module Type (
 
        mkFunTy, mkFunTys, splitFunTy, splitFunTy_maybe, 
        splitFunTys, splitFunTysN,
-       funResultTy, funArgTy, zipFunTys,
+       funResultTy, funArgTy, zipFunTys, 
 
        mkTyConApp, mkTyConTy, 
        tyConAppTyCon, tyConAppArgs, 
@@ -150,6 +150,8 @@ import FastString
 
 import Data.List
 import Data.Maybe      ( isJust )
+
+infixr 3 `mkFunTy`     -- Associates to the right
 \end{code}
 
 \begin{code}
@@ -1334,7 +1336,7 @@ then (substTy subst ty) does nothing.
 For example, consider:
        (/\a. /\b:(a~Int). ...b..) Int
 We substitute Int for 'a'.  The Unique of 'b' does not change, but
-nevertheless we add 'b' to the TvSubstEnv, because b's type does change
+nevertheless we add 'b' to the TvSubstEnv, because b's kind does change
 
 This invariant has several crucial consequences: