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|
{-# LANGUAGE RankNTypes, OverloadedStrings, DeriveGeneric, LambdaCase #-}
module Language where
import GHC.Generics
import Data.Aeson (ToJSON(..),FromJSON(..))
import Control.Monad.Writer
import Data.String
import Data.List
import Data.Map (Map)
import qualified Data.Map as Map
instance IsString Type where
fromString a = Data a
data DataDef
= DataDef
{ dataName :: String
, constructors :: [ConstructorDef]
, instances :: [Instance]
}
| TypeAlias
{ aliasName :: String
, aliasType :: Type
}
deriving (Show,Generic)
data ConstructorDef
= ConstructorDef
{ name :: String
, fields :: [Field]
}
deriving (Show,Generic)
data Field
= Field
{ fieldName :: String
, fieldType :: Type
}
deriving (Show,Generic)
data Instance
= Show
| Eq
deriving (Show,Generic)
data Type
= Int
| Int32
| Word
| Word32
| Float
| Bool
| String
| V2 Type
| V3 Type
| V4 Type
-- higher order types
| Array Type
| List Type
| Maybe Type
| Map Type Type
-- user defined
| Data String
deriving (Show,Generic)
parens :: String -> String
parens a
| 1 == length (words a) = a
| otherwise = "(" ++ a ++ ")"
type AliasMap = Map String Type
normalize :: AliasMap -> Type -> Type
normalize aliasMap t@(Data n) = Map.findWithDefault t n aliasMap
normalize _ t = t
psType :: AliasMap -> Type -> String
psType aliasMap = \case
Int -> "Int"
Int32 -> "Int32"
Word -> "Word"
Word32 -> "Word32"
Float -> "Float"
Bool -> "Bool"
String -> "String"
V2 Int -> "V2I"
V2 Word -> "V2U"
V2 Float -> "V2F"
V2 Bool -> "V2B"
V2 (V2 Float) -> "M22F"
V2 (V3 Float) -> "M32F"
V2 (V4 Float) -> "M42F"
V3 Int -> "V3I"
V3 Word -> "V3U"
V3 Float -> "V3F"
V3 Bool -> "V3B"
V3 (V2 Float) -> "M23F"
V3 (V3 Float) -> "M33F"
V3 (V4 Float) -> "M43F"
V4 Int -> "V4I"
V4 Word -> "V4U"
V4 Float -> "V4F"
V4 Bool -> "V4B"
V4 (V2 Float) -> "M24F"
V4 (V3 Float) -> "M34F"
V4 (V4 Float) -> "M44F"
Array t -> "Array " ++ parens (psType aliasMap t)
List t -> "List " ++ parens (psType aliasMap t)
Maybe t -> "Maybe " ++ parens (psType aliasMap t)
Map k v
| String <- normalize aliasMap k -> "StrMap " ++ parens (psType aliasMap v)
| otherwise -> "Map " ++ parens (psType aliasMap k) ++ " " ++ parens (psType aliasMap v)
-- user defined
Data t -> t
x -> error $ "unknown type: " ++ show x
hsType :: AliasMap -> Type -> String
hsType aliasMap = \case
Int -> "Int"
Int32 -> "Int32"
Word -> "Word"
Word32 -> "Word32"
Float -> "Float"
Bool -> "Bool"
String -> "String"
V2 Int -> "V2I"
V2 Word -> "V2U"
V2 Float -> "V2F"
V2 Bool -> "V2B"
V2 (V2 Float) -> "M22F"
V2 (V3 Float) -> "M32F"
V2 (V4 Float) -> "M42F"
V3 Int -> "V3I"
V3 Word -> "V3U"
V3 Float -> "V3F"
V3 Bool -> "V3B"
V3 (V2 Float) -> "M23F"
V3 (V3 Float) -> "M33F"
V3 (V4 Float) -> "M43F"
V4 Int -> "V4I"
V4 Word -> "V4U"
V4 Float -> "V4F"
V4 Bool -> "V4B"
V4 (V2 Float) -> "M24F"
V4 (V3 Float) -> "M34F"
V4 (V4 Float) -> "M44F"
Array t -> "[" ++ hsType aliasMap t ++ "]"
List t -> "[" ++ hsType aliasMap t ++ "]"
Maybe t -> "Maybe " ++ parens (hsType aliasMap t)
Map k v -> "Map " ++ parens (hsType aliasMap k) ++ " " ++ parens (hsType aliasMap v)
-- user defined
Data t -> t
x -> error $ "unknown type: " ++ show x
hasFieldNames :: [Field] -> Bool
hasFieldNames [] = False
hasFieldNames l = all (not . null . fieldName) l
constType :: DataDef -> String
constType = head . words . show
instance ToJSON ConstructorDef
instance ToJSON DataDef
instance ToJSON Instance
instance ToJSON Field
instance ToJSON Type
instance FromJSON ConstructorDef
instance FromJSON DataDef
instance FromJSON Instance
instance FromJSON Field
instance FromJSON Type
type DDef = Writer [DataDef]
type CDef = Writer ([ConstructorDef],[Instance])
data_ :: forall a . String -> CDef () -> DDef ()
data_ n l = tell [let (c,i) = execWriter l in DataDef n c i]
alias_ :: String -> Type -> DDef ()
alias_ n t = tell [TypeAlias n t]
a #= b = alias_ a b
class IsField a where
toField :: a -> Field
instance IsField Field where
toField a = a
instance IsField Type where
toField a = Field "" a
deriving_ :: [Instance] -> CDef ()
deriving_ l = tell (mempty,l)
const_ :: String -> [Type] -> CDef ()
const_ n t = tell ([ConstructorDef n [Field a b | Field a b <- map toField t]],mempty)
constR_ :: String -> [Field] -> CDef ()
constR_ n t = tell ([ConstructorDef n [Field a b | Field a b <- map toField t]],mempty)
enum_ :: String -> CDef ()
enum_ n = tell ([ConstructorDef n []],mempty)
v2b = V2 Bool
v3b = V3 Bool
v4b = V4 Bool
v2u = V2 Word
v3u = V3 Word
v4u = V4 Word
v2i = V2 Int
v3i = V3 Int
v4i = V4 Int
v2f = V2 Float
v3f = V3 Float
v4f = V4 Float
m22 = V2 v2f
m23 = V3 v2f
m24 = V4 v2f
m32 = V2 v3f
m33 = V3 v3f
m34 = V4 v3f
m42 = V2 v4f
m43 = V3 v4f
m44 = V4 v4f
(#::) :: String -> Type -> Field
a #:: b = Field a b
{-
definitions:
ADT
Record
Vector
instances:
Show
Eq
Ord
serialization:
json: encode/decode
other?
-}
|
