symantic-lib/Language/Symantic/Parsing/Test.hs

   1 {-# LANGUAGE ConstraintKinds #-}
   2 {-# OPTIONS_GHC -fno-warn-orphans #-}
   3 module Parsing.Test where
   4
   5 import Control.Applicative (Applicative(..))
   6 import qualified Control.Applicative as Alt
   7 import qualified Data.Char as Char
   8 import qualified Data.List as List
   9 import Data.String (IsString(..))
  10 import qualified Data.Text as Text
  11 import Prelude hiding (any, (^), exp)
  12 import qualified Text.Megaparsec as P
  13
  14 import Language.Symantic.Grammar
  15
  16 -- * Type 'ParsecT'
  17 type ParsecC e s = (P.Token s ~ Char, P.Stream s, P.ErrorComponent e)
  18 instance ParsecC e s => IsString (P.ParsecT e s m [Char]) where
  19         fromString = P.string
  20 instance ParsecC e s => Gram_Rule (P.ParsecT e s m) where
  21         rule = P.label . Text.unpack
  22 instance ParsecC e s => Gram_Terminal (P.ParsecT e s m) where
  23         any          = P.anyChar
  24         eoi          = P.eof
  25         char         = P.char
  26         string       = P.string
  27         unicat cat   = P.satisfy $ (`List.elem` cats) . Char.generalCategory
  28                 where cats = unicode_categories cat
  29         range (l, h) = P.satisfy $ \c -> l <= c && c <= h
  30         Terminal f `but` Terminal p = Terminal $ P.notFollowedBy (P.try p) *> f
  31 instance ParsecC e s => Alter (P.ParsecT e s m) where
  32         empty  = Alt.empty
  33         (<+>)  = (Alt.<|>)
  34         choice = P.choice
  35 instance ParsecC e s => Try (P.ParsecT e s m) where
  36         try = P.try
  37 instance ParsecC e s => Gram_RegR (P.ParsecT e s m) where
  38         Terminal f .*> Reg x = Reg $ f <*> x
  39 instance ParsecC e s => Gram_RegL (P.ParsecT e s m) where
  40         Reg f <*. Terminal x = Reg $ f <*> x
  41 instance ParsecC e s => App (P.ParsecT e s m) where
  42         between = P.between
  43 instance ParsecC e s => Alt (P.ParsecT e s m) where
  44         option   = P.option
  45         optional = P.optional
  46         many     = P.many
  47         some     = P.some
  48         skipMany = P.skipMany
  49 instance ParsecC e s => Gram_CF (P.ParsecT e s m) where
  50         CF f <& Reg p        = CF $ P.lookAhead f <*> p
  51         Reg f &> CF p        = CF $ P.lookAhead f <*> p
  52         minus (CF f) (Reg p) = CF $ P.notFollowedBy (P.try p) *> f
  53 instance ParsecC e s => Gram_Meta P.SourcePos (P.ParsecT e s m) where
  54         metaG p = do
  55                 pos <- P.getPosition
  56                 ($ pos) <$> p
  57 instance ParsecC e s => Gram_Lexer (P.ParsecT e s m)
  58 instance ParsecC e s => Gram_Op (P.ParsecT e s m)