Idris2/libs/prelude/Prelude/Cast.idr
Stiopa Koltsov 901a15e8f8 Move Cast interface to Prelude.Cast
Extract 200 lines file from 1000 lines `Prelude/Types.idr`.  To
make code more discoverable.
2021-01-27 18:31:43 +00:00

229 lines
3.5 KiB
Idris

module Prelude.Cast
import Builtin
import Prelude.Basics
import Prelude.Num
import Prelude.Types
-----------
-- CASTS --
-----------
-- Casts between primitives only here. They might be lossy.
||| Interface for transforming an instance of a data type to another type.
public export
interface Cast from to where
||| Perform a (potentially lossy!) cast operation.
||| @ orig The original type
cast : (orig : from) -> to
-- To String
export
Cast Int String where
cast = prim__cast_IntString
export
Cast Integer String where
cast = prim__cast_IntegerString
export
Cast Char String where
cast = prim__cast_CharString
export
Cast Double String where
cast = prim__cast_DoubleString
-- To Integer
export
Cast Int Integer where
cast = prim__cast_IntInteger
export
Cast Char Integer where
cast = prim__cast_CharInteger
export
Cast Double Integer where
cast = prim__cast_DoubleInteger
export
Cast String Integer where
cast = prim__cast_StringInteger
export
Cast Nat Integer where
cast = natToInteger
export
Cast Bits8 Integer where
cast = prim__cast_Bits8Integer
export
Cast Bits16 Integer where
cast = prim__cast_Bits16Integer
export
Cast Bits32 Integer where
cast = prim__cast_Bits32Integer
export
Cast Bits64 Integer where
cast = prim__cast_Bits64Integer
-- To Int
export
Cast Integer Int where
cast = prim__cast_IntegerInt
export
Cast Char Int where
cast = prim__cast_CharInt
export
Cast Double Int where
cast = prim__cast_DoubleInt
export
Cast String Int where
cast = prim__cast_StringInt
export
Cast Nat Int where
cast = fromInteger . natToInteger
export
Cast Bits8 Int where
cast = prim__cast_Bits8Int
export
Cast Bits16 Int where
cast = prim__cast_Bits16Int
export
Cast Bits32 Int where
cast = prim__cast_Bits32Int
export
Cast Bits64 Int where
cast = prim__cast_Bits64Int
-- To Char
export
Cast Int Char where
cast = prim__cast_IntChar
-- To Double
export
Cast Int Double where
cast = prim__cast_IntDouble
export
Cast Integer Double where
cast = prim__cast_IntegerDouble
export
Cast String Double where
cast = prim__cast_StringDouble
export
Cast Nat Double where
cast = prim__cast_IntegerDouble . natToInteger
-- To Bits8
export
Cast Int Bits8 where
cast = prim__cast_IntBits8
export
Cast Integer Bits8 where
cast = prim__cast_IntegerBits8
export
Cast Bits16 Bits8 where
cast = prim__cast_Bits16Bits8
export
Cast Bits32 Bits8 where
cast = prim__cast_Bits32Bits8
export
Cast Bits64 Bits8 where
cast = prim__cast_Bits64Bits8
-- To Bits16
export
Cast Int Bits16 where
cast = prim__cast_IntBits16
export
Cast Integer Bits16 where
cast = prim__cast_IntegerBits16
export
Cast Bits8 Bits16 where
cast = prim__cast_Bits8Bits16
export
Cast Bits32 Bits16 where
cast = prim__cast_Bits32Bits16
export
Cast Bits64 Bits16 where
cast = prim__cast_Bits64Bits16
-- To Bits32
export
Cast Int Bits32 where
cast = prim__cast_IntBits32
export
Cast Integer Bits32 where
cast = prim__cast_IntegerBits32
export
Cast Bits8 Bits32 where
cast = prim__cast_Bits8Bits32
export
Cast Bits16 Bits32 where
cast = prim__cast_Bits16Bits32
export
Cast Bits64 Bits32 where
cast = prim__cast_Bits64Bits32
-- To Bits64
export
Cast Int Bits64 where
cast = prim__cast_IntBits64
export
Cast Integer Bits64 where
cast = prim__cast_IntegerBits64
export
Cast Bits8 Bits64 where
cast = prim__cast_Bits8Bits64
export
Cast Bits16 Bits64 where
cast = prim__cast_Bits16Bits64
export
Cast Bits32 Bits64 where
cast = prim__cast_Bits32Bits64