Copyright | (c) Harvard University 2006-2011 (c) Geoffrey Mainland 2011-2015 |
---|---|

License | BSD-style |

Maintainer | Geoffrey Mainland <mainland@cs.drexel.edu> |

Safe Haskell | None |

Language | Haskell98 |

## Synopsis

- data Pos = Pos !FilePath !Int !Int !Int
- posFile :: Pos -> FilePath
- posLine :: Pos -> Int
- posCol :: Pos -> Int
- posCoff :: Pos -> Int
- startPos :: FilePath -> Pos
- linePos :: FilePath -> Int -> Pos
- advancePos :: Pos -> Char -> Pos
- displayPos :: Pos -> String
- displaySPos :: Pos -> ShowS
- data Loc
- locStart :: Loc -> Loc
- locEnd :: Loc -> Loc
- (<-->) :: (Located a, Located b) => a -> b -> Loc
- displayLoc :: Loc -> String
- displaySLoc :: Loc -> ShowS
- newtype SrcLoc = SrcLoc Loc
- srclocOf :: Located a => a -> SrcLoc
- srcspan :: (Located a, Located b) => a -> b -> SrcLoc
- class IsLocation a where
- noLoc :: IsLocation a => a
- class Located a where
- class Relocatable a where
- data L a = L Loc a
- unLoc :: L a -> a

# Documentation

Position type.

Pos !FilePath !Int !Int !Int | Source file name, line, column, and character offset. Line numbering starts at 1, column offset starts at 1, and character offset starts at 0. |

#### Instances

Eq Pos Source # | |

Data Pos Source # | |

Defined in Data.Loc gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Pos -> c Pos # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Pos # dataTypeOf :: Pos -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Pos) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Pos) # gmapT :: (forall b. Data b => b -> b) -> Pos -> Pos # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Pos -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Pos -> r # gmapQ :: (forall d. Data d => d -> u) -> Pos -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Pos -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Pos -> m Pos # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Pos -> m Pos # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Pos -> m Pos # | |

Ord Pos Source # | |

Read Pos Source # | |

Show Pos Source # | |

Located Pos Source # | |

linePos :: FilePath -> Int -> Pos Source #

Position corresponding to given file and line.

Note that the associated character offset is set to 0.

advancePos :: Pos -> Char -> Pos Source #

Advance a position by a single character. Newlines increment the line number, tabs increase the position column following a tab stop width of 8, and all other characters increase the position column by one. All characters, including newlines and tabs, increase the character offset by 1.

Note that `advancePos`

assumes UNIX-style newlines.

displayPos :: Pos -> String Source #

Format a position in a human-readable way, returning an ordinary
`String`

.

displaySPos :: Pos -> ShowS Source #

Format a position in a human-readable way.

Location type, consisting of a beginning position and an end position.

#### Instances

Eq Loc Source # | |

Data Loc Source # | |

Defined in Data.Loc gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Loc -> c Loc # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Loc # dataTypeOf :: Loc -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Loc) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Loc) # gmapT :: (forall b. Data b => b -> b) -> Loc -> Loc # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Loc -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Loc -> r # gmapQ :: (forall d. Data d => d -> u) -> Loc -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Loc -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Loc -> m Loc # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Loc -> m Loc # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Loc -> m Loc # | |

Read Loc Source # | |

Show Loc Source # | |

Semigroup Loc Source # | |

Monoid Loc Source # | |

Located Loc Source # | |

IsLocation Loc Source # | |

(<-->) :: (Located a, Located b) => a -> b -> Loc infixl 6 Source #

Merge the locations of two `Located`

values.

displayLoc :: Loc -> String Source #

Format a location in a human-readable way, returning an ordinary
`String`

.

displaySLoc :: Loc -> ShowS Source #

Format a location in a human-readable way.

Source location type. Source location are all equal, which allows AST nodes to be compared modulo location information.

#### Instances

Eq SrcLoc Source # | |

Data SrcLoc Source # | |

Defined in Data.Loc gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> SrcLoc -> c SrcLoc # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c SrcLoc # toConstr :: SrcLoc -> Constr # dataTypeOf :: SrcLoc -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c SrcLoc) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c SrcLoc) # gmapT :: (forall b. Data b => b -> b) -> SrcLoc -> SrcLoc # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> SrcLoc -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> SrcLoc -> r # gmapQ :: (forall d. Data d => d -> u) -> SrcLoc -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> SrcLoc -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> SrcLoc -> m SrcLoc # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> SrcLoc -> m SrcLoc # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> SrcLoc -> m SrcLoc # | |

Ord SrcLoc Source # | |

Read SrcLoc Source # | |

Show SrcLoc Source # | |

Semigroup SrcLoc Source # | |

Monoid SrcLoc Source # | |

Located SrcLoc Source # | |

IsLocation SrcLoc Source # | |

class IsLocation a where Source #

Locations

noLoc :: IsLocation a => a Source #

No location.

class Located a where Source #

Located values have a location.

class Relocatable a where Source #

Values that can be relocated

A value of type `L a`

is a value of type `a`

with an associated `Loc`

, but
this location is ignored when performing comparisons.

#### Instances

Functor L Source # | |

Eq x => Eq (L x) Source # | |

Data a => Data (L a) Source # | |

Defined in Data.Loc gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> L a -> c (L a) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (L a) # dataTypeOf :: L a -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (L a)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (L a)) # gmapT :: (forall b. Data b => b -> b) -> L a -> L a # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> L a -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> L a -> r # gmapQ :: (forall d. Data d => d -> u) -> L a -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> L a -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> L a -> m (L a) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> L a -> m (L a) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> L a -> m (L a) # | |

Ord x => Ord (L x) Source # | |

Show x => Show (L x) Source # | |

Relocatable (L a) Source # | |

Located (L a) Source # | |