-- File generated by the BNF Converter (bnfc 2.9.3).

{-# LANGUAGE PatternSynonyms #-}

-- | The abstract syntax of language BNFC.

module BNFC.Abs where

import Prelude (Char, Double, Integer, String)
import qualified Prelude as C
  ( Eq, Ord, Show, Read
  , Int, Maybe(..)
  )

data Grammar = Grammar [Def]
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data Def
    = Rule Label Cat [Item]
    | Comment String
    | Comments String String
    | Internal Label Cat [Item]
    | Token Identifier Reg
    | PosToken Identifier Reg
    | Entryp [Cat]
    | Separator MinimumSize Cat String
    | Terminator MinimumSize Cat String
    | Delimiters Cat String String Separation MinimumSize
    | Coercions Identifier Integer
    | Rules Identifier [RHS]
    | Function Identifier [Arg] Exp
    | Layout [String]
    | LayoutStop [String]
    | LayoutTop
  deriving (Def -> Def -> Bool
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data Item = Terminal String | NTerminal Cat
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data Cat = ListCat Cat | IdCat Identifier
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data Label = Id Identifier | Wild | ListE | ListCons | ListOne
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data Arg = Arg Identifier
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data Separation = SepNone | SepTerm String | SepSepar String
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data Exp
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    | App Identifier [Exp]
    | Var Identifier
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    | LitChar Char
    | LitString String
    | LitDouble Double
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data RHS = RHS [Item]
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data MinimumSize = MNonempty | MEmpty
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readList :: ReadS [MinimumSize]
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readsPrec :: Int -> ReadS MinimumSize
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data Reg
    = RAlt Reg Reg
    | RMinus Reg Reg
    | RSeq Reg Reg
    | RStar Reg
    | RPlus Reg
    | ROpt Reg
    | REps
    | RChar Char
    | RAlts String
    | RSeqs String
    | RDigit
    | RLetter
    | RUpper
    | RLower
    | RAny
  deriving (Reg -> Reg -> Bool
(Reg -> Reg -> Bool) -> (Reg -> Reg -> Bool) -> Eq Reg
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: Reg -> Reg -> Bool
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C.Eq, Eq Reg
Eq Reg
-> (Reg -> Reg -> Ordering)
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-> (Reg -> Reg -> Bool)
-> (Reg -> Reg -> Bool)
-> (Reg -> Reg -> Bool)
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-> (Reg -> Reg -> Reg)
-> Ord Reg
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-> Ord a
min :: Reg -> Reg -> Reg
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max :: Reg -> Reg -> Reg
$cmax :: Reg -> Reg -> Reg
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newtype Identifier = Identifier ((C.Int, C.Int), String)
  deriving (Identifier -> Identifier -> Bool
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min :: Identifier -> Identifier -> Identifier
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showList :: [Identifier] -> ShowS
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C.Read)

-- | Start position (line, column) of something.

type BNFC'Position = C.Maybe (C.Int, C.Int)

pattern BNFC'NoPosition :: BNFC'Position
pattern $bBNFC'NoPosition :: BNFC'Position
$mBNFC'NoPosition :: forall r. BNFC'Position -> (Void# -> r) -> (Void# -> r) -> r
BNFC'NoPosition = C.Nothing

pattern BNFC'Position :: C.Int -> C.Int -> BNFC'Position
pattern $bBNFC'Position :: Int -> Int -> BNFC'Position
$mBNFC'Position :: forall r. BNFC'Position -> (Int -> Int -> r) -> (Void# -> r) -> r
BNFC'Position line col = C.Just (line, col)

-- | Get the start position of something.

class HasPosition a where
  hasPosition :: a -> BNFC'Position

instance HasPosition Identifier where
  hasPosition :: Identifier -> BNFC'Position
hasPosition (Identifier ((Int, Int)
p, String
_)) = (Int, Int) -> BNFC'Position
forall a. a -> Maybe a
C.Just (Int, Int)
p