module YesodDsl.Generator.Common where
import YesodDsl.AST
import Language.Haskell.HsColour.Classify
brackets :: Bool -> String -> String
brackets True s = "(" ++ s ++ ")"
brackets False s = s
maybeHsJust :: Bool -> String -> String
maybeHsJust True v = "(Just " ++ v ++ ")"
maybeHsJust False v = v
makeJust :: Int -> String -> String
makeJust n t
| n > 0 = "just (" ++ makeJust (n 1) t ++ ")"
| otherwise = t
quote :: String -> String
quote s = "\"" ++ s ++ "\""
indent :: Int -> String -> String
indent x = unlines . (map ((replicate x ' ')++)) . lines
prepend :: String -> String -> String
prepend x = (x++)
entityFieldName :: Entity -> Field -> String
entityFieldName e f = (lowerFirst . entityName) e ++ (upperFirst . fieldName) f
resultMapper :: Maybe FunctionName -> String
resultMapper mmapper = maybe "" ((" $ " ++) . (++ " $ ")) mmapper
isKeyword :: String -> Bool
isKeyword = (== [Keyword]) . map fst . tokenise
safeHsName :: String -> String
safeHsName x
| isKeyword x = x ++ "_"
| otherwise = x