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Types.elm
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Types.elm
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module Types exposing (..)
import Array exposing (Array)
import Dict exposing (Dict)
import IO exposing (IO)
type Either a b
= Left a
| Right b
type Msg
= Input (Result String IO)
type alias Frame =
{ outerId : Maybe Int
, exitId : Maybe Int
, data : Dict String MalExpr
, refCnt : Int
}
type alias Env =
{ frames : Dict Int Frame
, nextFrameId : Int
, currentFrameId : Int
, atoms : Dict Int MalExpr
, nextAtomId : Int
, debug : Bool
, gcInterval : Int
, gcCounter : Int
, stack : List MalExpr
, keepFrames : List Int
}
type alias EvalCont a =
IO -> Eval a
type EvalResult res
= EvalErr MalExpr
| EvalOk res
| EvalIO (Cmd Msg) (EvalCont res)
type alias EvalContext res =
( Env, EvalResult res )
type alias Eval res =
Env -> EvalContext res
type alias MalFn =
List MalExpr -> Eval MalExpr
type MalFunction
= CoreFunc MalFn
| UserFunc
{ frameId : Int
, lazyFn : MalFn
, eagerFn : MalFn
, isMacro : Bool
, meta : Maybe MalExpr
}
type alias ApplyRec =
{ frameId : Int, bound : Bound, body : MalExpr }
type alias TcoFn =
() -> Eval MalExpr
type alias Bound =
List ( String, MalExpr )
type MalExpr
= MalNil
| MalBool Bool
| MalInt Int
| MalString String
| MalKeyword String
| MalSymbol String
| MalList (List MalExpr)
| MalVector (Array MalExpr)
| MalMap (Dict String MalExpr)
| MalFunction MalFunction
| MalApply ApplyRec
| MalAtom Int
{-| Keywords are prefixed by this char for usage in a MalMap.
Elm doesn't support user defined types as keys in a Dict.
The unicode char is: '\x029e'
-}