Copyright | Bryan O'Sullivan 2007-2015 |
---|---|

License | BSD3 |

Maintainer | bos@serpentine.com |

Stability | experimental |

Portability | unknown |

Safe Haskell | None |

Language | Haskell98 |

Simple, efficient parser combinators, loosely based on the Parsec library.

## Synopsis

- compareResults :: (Eq i, Eq r) => IResult i r -> IResult i r -> Maybe Bool
- prompt :: Chunk t => State t -> Pos -> More -> (State t -> Pos -> More -> IResult t r) -> (State t -> Pos -> More -> IResult t r) -> IResult t r
- demandInput :: Chunk t => Parser t ()
- demandInput_ :: Chunk t => Parser t t
- wantInput :: forall t. Chunk t => Parser t Bool
- endOfInput :: forall t. Chunk t => Parser t ()
- atEnd :: Chunk t => Parser t Bool
- satisfyElem :: forall t. Chunk t => (ChunkElem t -> Bool) -> Parser t (ChunkElem t)
- concatReverse :: Monoid m => [m] -> m

# Documentation

prompt :: Chunk t => State t -> Pos -> More -> (State t -> Pos -> More -> IResult t r) -> (State t -> Pos -> More -> IResult t r) -> IResult t r #

Ask for input. If we receive any, pass the augmented input to a success continuation, otherwise to a failure continuation.

demandInput :: Chunk t => Parser t () #

Immediately demand more input via a `Partial`

continuation
result.

demandInput_ :: Chunk t => Parser t t #

Immediately demand more input via a `Partial`

continuation
result. Return the new input.

endOfInput :: forall t. Chunk t => Parser t () #

Match only if all input has been consumed.

atEnd :: Chunk t => Parser t Bool #

Return an indication of whether the end of input has been reached.

satisfyElem :: forall t. Chunk t => (ChunkElem t -> Bool) -> Parser t (ChunkElem t) #

The parser `satisfyElem p`

succeeds for any chunk element for which the
predicate `p`

returns `True`

. Returns the element that is
actually parsed.

concatReverse :: Monoid m => [m] -> m #

Concatenate a monoid after reversing its elements. Used to glue together a series of textual chunks that have been accumulated "backwards".