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Add mkHsCoerce to avoid junk in typechecked code
[ghc-hetmet.git]
/
ghc
/
compiler
/
hsSyn
/
HsUtils.lhs
diff --git
a/ghc/compiler/hsSyn/HsUtils.lhs
b/ghc/compiler/hsSyn/HsUtils.lhs
index
23f7fd0
..
0ff936d
100644
(file)
--- a/
ghc/compiler/hsSyn/HsUtils.lhs
+++ b/
ghc/compiler/hsSyn/HsUtils.lhs
@@
-79,6
+79,10
@@
mkHsDictApp :: LHsExpr name -> [name] -> LHsExpr name
mkHsDictApp expr [] = expr
mkHsDictApp expr dict_vars = L (getLoc expr) (DictApp expr dict_vars)
mkHsDictApp expr [] = expr
mkHsDictApp expr dict_vars = L (getLoc expr) (DictApp expr dict_vars)
+mkHsCoerce :: ExprCoFn -> HsExpr id -> HsExpr id
+mkHsCoerce co_fn e | isIdCoercion co_fn = e
+ | otherwise = HsCoerce co_fn e
+
mkHsLam :: [LPat id] -> LHsExpr id -> LHsExpr id
mkHsLam pats body = mkHsPar (L (getLoc body) (HsLam matches))
where
mkHsLam :: [LPat id] -> LHsExpr id -> LHsExpr id
mkHsLam pats body = mkHsPar (L (getLoc body) (HsLam matches))
where