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Parse and desugar equational constraints
[ghc-hetmet.git]
/
compiler
/
parser
/
Parser.y.pp
diff --git
a/compiler/parser/Parser.y.pp
b/compiler/parser/Parser.y.pp
index
f349f30
..
d35d4e2
100644
(file)
--- a/
compiler/parser/Parser.y.pp
+++ b/
compiler/parser/Parser.y.pp
@@
-981,7
+981,8
@@
gentype :: { LHsType RdrName }
: btype { $1 }
| btype qtyconop gentype { LL $ HsOpTy $1 $2 $3 }
| btype tyvarop gentype { LL $ HsOpTy $1 $2 $3 }
: btype { $1 }
| btype qtyconop gentype { LL $ HsOpTy $1 $2 $3 }
| btype tyvarop gentype { LL $ HsOpTy $1 $2 $3 }
- | btype '->' ctype { LL $ HsFunTy $1 $3 }
+ | btype '->' ctype { LL $ HsFunTy $1 $3 }
+ | btype '~' gentype { LL $ HsPredTy (HsEqualP $1 $3) }
btype :: { LHsType RdrName }
: btype atype { LL $ HsAppTy $1 $2 }
btype :: { LHsType RdrName }
: btype atype { LL $ HsAppTy $1 $2 }