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74 lines
1.4 KiB
74 lines
1.4 KiB
{-# LANGUAGE DeriveDataTypeable #-}
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module Presyntax.Presyntax where
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import Data.Text (Text)
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import Data.Data
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data Plicity
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= Im | Ex
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deriving (Eq, Show, Ord, Data)
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data Expr
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= Var Text
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| Hole
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| App Plicity Expr Expr
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| Pi Plicity Text Expr Expr
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| Lam Plicity Text Expr
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| Sigma Text Expr Expr
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| Pair Expr Expr
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| Proj1 Expr
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| Proj2 Expr
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| LamSystem [(Formula, Expr)]
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| LamCase [(Pattern, Expr)]
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| Let [LetItem] Expr
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| Span Expr Posn Posn
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deriving (Eq, Show, Ord)
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data LetItem
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= LetDecl { leIName :: Text, leIVal :: Expr }
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| LetBind { leIName :: Text, leIVal :: Expr }
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deriving (Eq, Show, Ord)
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data Formula
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= FIs1 Text
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| FIs0 Text
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| FAnd Formula Formula
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| FOr Formula Formula
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| FTop
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| FBot
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deriving (Eq, Show, Ord)
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data Pattern
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= PCon Text [Text]
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| PCap Text
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deriving (Eq, Show, Ord)
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data Statement
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= Decl [Text] Expr
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| Defn Text Expr
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| Builtin Text Text
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| Postulate [(Text, Expr)]
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| ReplNf Expr -- REPL eval
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| ReplTy Expr -- REPL :t
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| Data Text [(Text, Plicity, Expr)] Expr [(Posn, Posn, Constructor)]
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| SpanSt Statement Posn Posn
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deriving (Eq, Show, Ord)
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data Constructor
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= Point Text Expr
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| Path Text [Text] Expr [(Formula, Expr)]
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deriving (Eq, Show, Ord)
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data Posn
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= Posn { posnLine :: {-# UNPACK #-} !Int
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, posnColm :: {-# UNPACK #-} !Int
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}
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deriving (Eq, Show, Ord)
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