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Use fail instead of error #2

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Use fail instead of error #2

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16 changes: 11 additions & 5 deletions src/Debug/Dump.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,14 @@ import qualified Internal.Parser as Parser

-- | This is the main `QuasiQuoter`.
dump :: QuasiQuoter
dump = QuasiQuoter {quoteExp = process}
dump = QuasiQuoter
{ quoteExp = process
, quoteType = \_ -> fl "use in types."
, quotePat = \_ -> fl "use in patterns."
, quoteDec = \_ -> fl "generating declarations."
}
where
fl m = fail $ "This quasiquoter is not for " ++ m

-- | Shorthand for `dump`.
d :: QuasiQuoter
Expand Down Expand Up @@ -61,7 +68,6 @@ process = id
.> joinAsColumns
.> (fmap (++ "\n")) .> wrapInParens
.> parseHsStrToQQExp str
.> return

removeLineComments = id
.> lines
Expand Down Expand Up @@ -90,15 +96,15 @@ joinAsColumns = sequenceA .> fmap (intercalate [qc|{nl} ++ "\t " ++ |])
wrapInParens :: HsExp String -> HsExp String
wrapInParens = fmap Utils.wrapInParens

parseHsStrToQQExp :: String -> HsExp String -> Exp
parseHsStrToQQExp :: String -> HsExp String -> Q Exp
parseHsStrToQQExp original = id
.> unHsExp
.> \s -> s $> id
.> parseExp
.> let e =
[qc|Debug.Dump: parseHsStrToQQExp:{indent 2 original}{indent 10 s})|] in id
.> let ef = (e ++) .> error in id
.> either ef id
.> let ef = (e ++) .> fail in id
.> either ef pure

nl = "\n"

Expand Down