Text.ParserCombinators.HuttonMeijer

polyparse-1.12: A variety of alternative parser combinator libraries.

Copyright | Graham Hutton (University of Nottingham), Erik Meijer (University of Utrecht)
License | BSD
Maintainer | Malcolm Wallace <Malcolm.Wallace@cs.york.ac.uk>
Stability | Stable
Portability | All A LIBRARY OF MONADIC PARSER COMBINATORS 29th July 1996 Graham Hutton Erik Meijer University of Nottingham University of Utrecht
Safe Haskell | Safe
Language | Haskell98

Text.ParserCombinators.HuttonMeijer

Description

This Haskell script defines a library of parser combinators, and is taken from sections 1-6 of our article "Monadic Parser Combinators". Some changes to the library have been made in the move from Gofer to Haskell:

- Do notation is used in place of monad comprehension notation;
- The parser datatype is defined using "newtype", to avoid the overhead of tagging and untagging parsers with the P constructor.

Synopsis

- newtype Parser a = P ([Token] -> [(a, [Token])])
- item :: Parser Token
- first :: Parser a -> Parser a
- papply :: Parser a -> [Token] -> [(a, [Token])]
- (+++) :: Parser a -> Parser a -> Parser a
- sat :: (Token -> Bool) -> Parser Token
- many :: Parser a -> Parser [a]
- many1 :: Parser a -> Parser [a]
- sepby :: Parser a -> Parser b -> Parser [a]
- sepby1 :: Parser a -> Parser b -> Parser [a]
- chainl :: Parser a -> Parser (a -> a -> a) -> a -> Parser a
- chainl1 :: Parser a -> Parser (a -> a -> a) -> Parser a
- chainr :: Parser a -> Parser (a -> a -> a) -> a -> Parser a
- chainr1 :: Parser a -> Parser (a -> a -> a) -> Parser a
- ops :: [(Parser a, b)] -> Parser b
- bracket :: Parser a -> Parser b -> Parser c -> Parser b
- char :: Char -> Parser Char
- digit :: Parser Char
- lower :: Parser Char
- upper :: Parser Char
- letter :: Parser Char
- alphanum :: Parser Char
- string :: String -> Parser String
- ident :: Parser String
- nat :: Parser Int
- int :: Parser Int
- spaces :: Parser ()
- comment :: Parser ()
- junk :: Parser ()
- skip :: Parser a -> Parser a
- token :: Parser a -> Parser a
- natural :: Parser Int
- integer :: Parser Int
- symbol :: String -> Parser String
- identifier :: [String] -> Parser String

# Documentation

newtype Parser a #

The parser monad

Constructors

P ([Token] -> [(a, [Token])]) |

Instances

Monad Parser # |
Methods (>>=) :: Parser a -> (a -> Parser b) -> Parser b # (>>) :: Parser a -> Parser b -> Parser b # return :: a -> Parser a # fail :: String -> Parser a #
Functor Parser # |
Methods fmap :: (a -> b) -> Parser a -> Parser b # (<$) :: a -> Parser b -> Parser a #
Applicative Parser # |
Methods pure :: a -> Parser a # (<*>) :: Parser (a -> b) -> Parser a -> Parser b # (*>) :: Parser a -> Parser b -> Parser b # (<*) :: Parser a -> Parser b -> Parser a #
Alternative Parser # |
Methods empty :: Parser a # (<|>) :: Parser a -> Parser a -> Parser a # some :: Parser a -> Parser [a] # many :: Parser a -> Parser [a] #
MonadPlus Parser # |
Methods mzero :: Parser a # mplus :: Parser a -> Parser a -> Parser a #

item :: Parser Token #

first :: Parser a -> Parser a #

papply :: Parser a -> [Token] -> [(a, [Token])] #

(+++) :: Parser a -> Parser a -> Parser a infixr 5 #

sat :: (Token -> Bool) -> Parser Token #

many :: Parser a -> Parser [a] #

many1 :: Parser a -> Parser [a] #

sepby :: Parser a -> Parser b -> Parser [a] #

sepby1 :: Parser a -> Parser b -> Parser [a] #

chainl :: Parser a -> Parser (a -> a -> a) -> a -> Parser a #

chainl1 :: Parser a -> Parser (a -> a -> a) -> Parser a #

chainr :: Parser a -> Parser (a -> a -> a) -> a -> Parser a #

chainr1 :: Parser a -> Parser (a -> a -> a) -> Parser a #

ops :: [(Parser a, b)] -> Parser b #

bracket :: Parser a -> Parser b -> Parser c -> Parser b #

char :: Char -> Parser Char #

digit :: Parser Char #

lower :: Parser Char #

upper :: Parser Char #

letter :: Parser Char #

alphanum :: Parser Char #

string :: String -> Parser String #

ident :: Parser String #

nat :: Parser Int #

int :: Parser Int #

spaces :: Parser () #

comment :: Parser () #

junk :: Parser () #

skip :: Parser a -> Parser a #

token :: Parser a -> Parser a #

natural :: Parser Int #

integer :: Parser Int #

symbol :: String -> Parser String #

identifier :: [String] -> Parser String #