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make functions to parse files with stateful parsers #123

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9305287
make functions to parse files with stateful parsers
KommuSoft Dec 29, 2020
c874511
conditional import of (<$>)
KommuSoft Dec 29, 2020
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29 changes: 23 additions & 6 deletions src/Text/Parsec/ByteString.hs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE Safe #-}

-----------------------------------------------------------------------------
Expand All @@ -15,17 +16,36 @@
-----------------------------------------------------------------------------

module Text.Parsec.ByteString
( Parser, GenParser, parseFromFile
( Parser, ParserU, GenParser, parseFromFile, parseFromFile'
) where

#if __GLASGOW_HASKELL__ < 710
import Data.Functor((<$>))
#endif

import Text.Parsec.Error
import Text.Parsec.Prim

import qualified Data.ByteString.Char8 as C

type Parser = Parsec C.ByteString ()
type ParserU u = Parsec C.ByteString u
type Parser = ParserU ()
type GenParser t st = Parsec C.ByteString st


-- | @parseFromFile' p u filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'ByteString.Char8.readFile' with start state @u@.
-- Returns either a 'ParseError' ('Left') or a value of type @a@ ('Right').
--
-- > main = do{ result <- parseFromFile' numbers () "digits.txt"
-- > ; case result of
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }
parseFromFile' :: ParserU u a -> u -> FilePath -> IO (Either ParseError a)
parseFromFile' p u fname = runP p u fname <$> C.readFile fname


-- | @parseFromFile p filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'ByteString.Char8.readFile'. Returns either a 'ParseError'
-- ('Left') or a value of type @a@ ('Right').
Expand All @@ -35,8 +55,5 @@ type GenParser t st = Parsec C.ByteString st
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }

parseFromFile :: Parser a -> FilePath -> IO (Either ParseError a)
parseFromFile p fname
= do input <- C.readFile fname
return (runP p () fname input)
parseFromFile = (`parseFromFile'` ())
31 changes: 24 additions & 7 deletions src/Text/Parsec/ByteString/Lazy.hs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE Safe #-}

-----------------------------------------------------------------------------
Expand All @@ -15,18 +16,37 @@
-----------------------------------------------------------------------------

module Text.Parsec.ByteString.Lazy
( Parser, GenParser, parseFromFile
( Parser, ParserU, GenParser, parseFromFile, parseFromFile'
) where

#if __GLASGOW_HASKELL__ < 710
import Data.Functor((<$>))
#endif

import Text.Parsec.Error
import Text.Parsec.Prim

import qualified Data.ByteString.Lazy.Char8 as C

type Parser = Parsec C.ByteString ()
type ParserU u = Parsec C.ByteString u
type Parser = ParserU ()
type GenParser t st = Parsec C.ByteString st

-- | @parseFromFile p filePath@ runs a lazy bytestring parser @p@ on the

-- | @parseFromFile' p u filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'ByteString.Lazy.Char8.readFile' with start state @u@.
-- Returns either a 'ParseError' ('Left') or a value of type @a@ ('Right').
--
-- > main = do{ result <- parseFromFile' numbers () "digits.txt"
-- > ; case result of
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }
parseFromFile' :: ParserU u a -> u -> FilePath -> IO (Either ParseError a)
parseFromFile' p u fname = runP p u fname <$> C.readFile fname


-- | @parseFromFile p filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'ByteString.Lazy.Char8.readFile'. Returns either a 'ParseError'
-- ('Left') or a value of type @a@ ('Right').
--
Expand All @@ -35,8 +55,5 @@ type GenParser t st = Parsec C.ByteString st
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }

parseFromFile :: Parser a -> FilePath -> IO (Either ParseError a)
parseFromFile p fname
= do input <- C.readFile fname
return (runP p () fname input)
parseFromFile = (`parseFromFile'` ())
30 changes: 24 additions & 6 deletions src/Text/Parsec/String.hs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE Safe #-}

-----------------------------------------------------------------------------
Expand All @@ -15,16 +16,35 @@
-----------------------------------------------------------------------------

module Text.Parsec.String
( Parser, GenParser, parseFromFile
( Parser, ParserU, GenParser, parseFromFile, parseFromFile'
) where

#if __GLASGOW_HASKELL__ < 710
import Data.Functor((<$>))
#endif

import Text.Parsec.Error
import Text.Parsec.Prim

type Parser = Parsec String ()
type ParserU u = Parsec String u
type Parser = ParserU ()
type GenParser tok st = Parsec [tok] st

-- | @parseFromFile p filePath@ runs a string parser @p@ on the

-- | @parseFromFile' p u filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'Prelude.readFile' with start state @u@.
-- Returns either a 'ParseError' ('Left') or a value of type @a@ ('Right').
--
-- > main = do{ result <- parseFromFile' numbers () "digits.txt"
-- > ; case result of
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }
parseFromFile' :: ParserU u a -> u -> FilePath -> IO (Either ParseError a)
parseFromFile' p u fname = runP p u fname <$> readFile fname


-- | @parseFromFile p filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'Prelude.readFile'. Returns either a 'ParseError'
-- ('Left') or a value of type @a@ ('Right').
--
Expand All @@ -34,6 +54,4 @@ type GenParser tok st = Parsec [tok] st
-- > Right xs -> print (sum xs)
-- > }
parseFromFile :: Parser a -> FilePath -> IO (Either ParseError a)
parseFromFile p fname
= do input <- readFile fname
return (runP p () fname input)
parseFromFile = (`parseFromFile'` ())
33 changes: 24 additions & 9 deletions src/Text/Parsec/Text.hs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE Safe #-}

-----------------------------------------------------------------------------
Expand All @@ -15,18 +16,37 @@
-----------------------------------------------------------------------------

module Text.Parsec.Text
( Parser, GenParser, parseFromFile
( Parser, ParserU, GenParser, parseFromFile, parseFromFile'
) where

#if __GLASGOW_HASKELL__ < 710
import Data.Functor((<$>))
#endif

import qualified Data.Text as Text
import Text.Parsec.Prim
import Text.Parsec.Error
import Data.Text.IO as T

type Parser = Parsec Text.Text ()
type ParserU u = Parsec Text.Text u
type Parser = ParserU ()
type GenParser st = Parsec Text.Text st

-- | @parseFromFile p filePath@ runs a strict text parser @p@ on the

-- | @parseFromFile' p u filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'Data.Text.IO.readFile' with start state @u@.
-- Returns either a 'ParseError' ('Left') or a value of type @a@ ('Right').
--
-- > main = do{ result <- parseFromFile' numbers () "digits.txt"
-- > ; case result of
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }
parseFromFile' :: ParserU u a -> u -> FilePath -> IO (Either ParseError a)
parseFromFile' p u fname = runP p u fname <$> T.readFile fname


-- | @parseFromFile p filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'Data.Text.IO.readFile'. Returns either a 'ParseError'
-- ('Left') or a value of type @a@ ('Right').
--
Expand All @@ -35,10 +55,5 @@ type GenParser st = Parsec Text.Text st
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }
--
-- @since 3.1.14.0

parseFromFile :: Parser a -> FilePath -> IO (Either ParseError a)
parseFromFile p fname
= do input <- T.readFile fname
return (runP p () fname input)
parseFromFile = (`parseFromFile'` ())
33 changes: 24 additions & 9 deletions src/Text/Parsec/Text/Lazy.hs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE Safe #-}

-----------------------------------------------------------------------------
Expand All @@ -15,18 +16,37 @@
-----------------------------------------------------------------------------

module Text.Parsec.Text.Lazy
( Parser, GenParser, parseFromFile
( Parser, ParserU, GenParser, parseFromFile, parseFromFile'
) where

#if __GLASGOW_HASKELL__ < 710
import Data.Functor((<$>))
#endif

import qualified Data.Text.Lazy as Text
import Text.Parsec.Prim
import Text.Parsec.Error
import Data.Text.Lazy.IO as TL

type Parser = Parsec Text.Text ()
type ParserU u = Parsec Text.Text u
type Parser = ParserU ()
type GenParser st = Parsec Text.Text st

-- | @parseFromFile p filePath@ runs a strict text parser @p@ on the

-- | @parseFromFile' p u filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'Data.Text.Lazy.IO.readFile' with start state @u@.
-- Returns either a 'ParseError' ('Left') or a value of type @a@ ('Right').
--
-- > main = do{ result <- parseFromFile' numbers () "digits.txt"
-- > ; case result of
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }
parseFromFile' :: ParserU u a -> u -> FilePath -> IO (Either ParseError a)
parseFromFile' p u fname = runP p u fname <$> TL.readFile fname


-- | @parseFromFile p filePath@ runs a strict bytestring parser @p@ on the
-- input read from @filePath@ using 'Data.Text.Lazy.IO.readFile'. Returns either a 'ParseError'
-- ('Left') or a value of type @a@ ('Right').
--
Expand All @@ -35,10 +55,5 @@ type GenParser st = Parsec Text.Text st
-- > Left err -> print err
-- > Right xs -> print (sum xs)
-- > }
--
-- @since 3.1.14.0

parseFromFile :: Parser a -> FilePath -> IO (Either ParseError a)
parseFromFile p fname
= do input <- TL.readFile fname
return (runP p () fname input)
parseFromFile = (`parseFromFile'` ())