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 |
Functor Parser |
Applicative Parser |
Alternative Parser |
MonadPlus Parser |

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