Parser implementation, more or less
Getty Ritter
8 years ago
| 1 | {-# LANGUAGE OverloadedStrings #-} | |
| 2 | ||
| 3 | module Data.ADTN where | |
| 4 | ||
| 5 | import Control.Applicative((<|>)) | |
| 6 | import Data.Attoparsec.ByteString | |
| 7 | import Data.Attoparsec.ByteString.Char8 | |
| 8 | import Data.ByteString (ByteString) | |
| 9 | import qualified Data.ByteString as BS | |
| 10 | import Data.Map.Strict (Map) | |
| 11 | import qualified Data.Map as M | |
| 12 | import Data.Text (Text) | |
| 13 | import qualified Data.Text as T | |
| 14 | import Data.Vector (Vector) | |
| 15 | import qualified Data.Vector as V | |
| 16 | ||
| 17 | ||
| 18 | data Value | |
| 19 | = Sum Text Array | |
| 20 | | Product Object | |
| 21 | | List Array | |
| 22 | | Integer Integer | |
| 23 | | Double Double | |
| 24 | | Symbol Text | |
| 25 | | String Text | |
| 26 | deriving (Eq, Show) | |
| 27 | ||
| 28 | type Array = Vector Value | |
| 29 | type Object = Map Text Value | |
| 30 | ||
| 31 | decodeValue :: ByteString -> Either String Value | |
| 32 | decodeValue = parseOnly pVal | |
| 33 | where pVal :: Parser Value | |
| 34 | pVal = skipSpace *> (pSum <|> pProd <|> pList <|> pLit) | |
| 35 | pSum = Sum <$> (char '(' *> skipSpace *> pIdent) | |
| 36 | <*> (pValueList <* char ')') | |
| 37 | pProd = Product . M.fromList | |
| 38 | <$> (char '{' *> pProdBody <* skipSpace <* char '}') | |
| 39 | pProdBody = many' pPair | |
| 40 | pPair = (,) <$> (skipSpace *> pIdent) <*> pVal | |
| 41 | pList = List <$> (char '[' *> pValueList <* skipSpace <* char ']') | |
| 42 | pLit = Symbol <$> pIdent | |
| 43 | <|> String <$> pString | |
| 44 | <|> Integer <$> decimal | |
| 45 | pValueList = V.fromList <$> many' pVal | |
| 46 | pIdent = T.pack <$> many1' letter_ascii | |
| 47 | pString = T.pack <$> (char '"' *> manyTill pStrChar (char '"')) | |
| 48 | pStrChar = '\n' <$ string "\\n" | |
| 49 | <|> '\t' <$ string "\\t" | |
| 50 | <|> '\r' <$ string "\\r" | |
| 51 | <|> '\b' <$ string "\\b" | |
| 52 | <|> '\f' <$ string "\\f" | |
| 53 | <|> '\'' <$ string "\\'" | |
| 54 | <|> '\"' <$ string "\\\"" | |
| 55 | <|> '\\' <$ string "\\\\" | |
| 56 | <|> anyChar |
| 1 | Copyright (c) 2016, Getty Ritter | |
| 2 | ||
| 3 | All rights reserved. | |
| 4 | ||
| 5 | Redistribution and use in source and binary forms, with or without | |
| 6 | modification, are permitted provided that the following conditions are met: | |
| 7 | ||
| 8 | * Redistributions of source code must retain the above copyright | |
| 9 | notice, this list of conditions and the following disclaimer. | |
| 10 | ||
| 11 | * Redistributions in binary form must reproduce the above | |
| 12 | copyright notice, this list of conditions and the following | |
| 13 | disclaimer in the documentation and/or other materials provided | |
| 14 | with the distribution. | |
| 15 | ||
| 16 | * Neither the name of Getty Ritter nor the names of other | |
| 17 | contributors may be used to endorse or promote products derived | |
| 18 | from this software without specific prior written permission. | |
| 19 | ||
| 20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 21 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 22 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 23 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 24 | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 25 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 26 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
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| 28 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
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| 30 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 1 | -- Initial adtn.cabal generated by cabal init. For further documentation, | |
| 2 | -- see http://haskell.org/cabal/users-guide/ | |
| 3 | ||
| 4 | name: adtn | |
| 5 | version: 0.1.0.0 | |
| 6 | -- synopsis: | |
| 7 | -- description: | |
| 8 | license: BSD3 | |
| 9 | license-file: LICENSE | |
| 10 | author: Getty Ritter | |
| 11 | maintainer: gettyritter@gmail.com | |
| 12 | -- copyright: | |
| 13 | category: Data | |
| 14 | build-type: Simple | |
| 15 | -- extra-source-files: | |
| 16 | cabal-version: >=1.10 | |
| 17 | ||
| 18 | library | |
| 19 | exposed-modules: Data.ADTN | |
| 20 | -- other-modules: | |
| 21 | build-depends: base >=4.8 && <4.9, | |
| 22 | attoparsec, | |
| 23 | bytestring, | |
| 24 | aeson, | |
| 25 | containers, | |
| 26 | text, | |
| 27 | vector | |
| 28 | default-language: Haskell2010⏎ |