quox/lib/Quox/Definition.idr

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module Quox.Definition
import public Quox.No
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import public Quox.Syntax
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import Quox.Displace
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import public Data.SortedMap
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import public Quox.Loc
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import Control.Eff
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import Decidable.Decidable
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public export
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data DefBody =
Concrete (Term 0 0)
| Postulate
namespace DefBody
public export
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(.term0) : DefBody -> Maybe (Term 0 0)
(Concrete t).term0 = Just t
(Postulate).term0 = Nothing
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public export
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record Definition where
constructor MkDef
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qty : GQty
type0 : Term 0 0
body0 : DefBody
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loc_ : Loc
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public export %inline
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mkPostulate : GQty -> (type0 : Term 0 0) -> Loc -> Definition
mkPostulate qty type0 loc_ = MkDef {qty, type0, body0 = Postulate, loc_}
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public export %inline
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mkDef : GQty -> (type0, term0 : Term 0 0) -> Loc -> Definition
mkDef qty type0 term0 loc_ = MkDef {qty, type0, body0 = Concrete term0, loc_}
export Located Definition where def.loc = def.loc_
export Relocatable Definition where setLoc loc = {loc_ := loc}
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parameters {d, n : Nat}
public export %inline
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(.type) : Definition -> Term d n
g.type = g.type0 // shift0 d // shift0 n
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public export %inline
(.typeAt) : Definition -> Universe -> Term d n
g.typeAt u = displace u g.type
public export %inline
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(.term) : Definition -> Maybe (Term d n)
g.term = g.body0.term0 <&> \t => t // shift0 d // shift0 n
public export %inline
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(.termAt) : Definition -> Universe -> Maybe (Term d n)
g.termAt u = displace u <$> g.term
public export %inline
toElim : Definition -> Universe -> Maybe $ Elim d n
toElim def u = pure $ Ann !(def.termAt u) (def.typeAt u) def.loc
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public export %inline
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isZero : Definition -> Bool
isZero g = g.qty == GZero
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public export
data DefEnvTag = DEFS
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public export
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Definitions : Type
Definitions = SortedMap Name Definition
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public export
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DefsReader : Type -> Type
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DefsReader = ReaderL DEFS Definitions
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public export
DefsState : Type -> Type
DefsState = StateL DEFS Definitions
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public export %inline
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lookupElim : {d, n : Nat} -> Name -> Universe -> Definitions -> Maybe (Elim d n)
lookupElim x u defs = toElim !(lookup x defs) u