megaparsec-9.2.1: Monadic parser combinators
Copyright© 2015–present Megaparsec contributors
LicenseFreeBSD
MaintainerMark Karpov <markkarpov92@gmail.com>
Stabilityexperimental
Portabilityportable
Safe HaskellSafe
LanguageHaskell2010

Text.Megaparsec.Pos

Description

Textual source position. The position includes name of file, line number, and column number.

You probably do not want to import this module directly because Text.Megaparsec re-exports it anyway.

Synopsis

Abstract position

data Pos Source #

Pos is the type for positive integers. This is used to represent line number, column number, and similar things like indentation level. Semigroup instance can be used to safely and efficiently add Poses together.

Since: 5.0.0

Instances

Instances details
Eq Pos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

(==) :: Pos -> Pos -> Bool #

(/=) :: Pos -> Pos -> Bool #

Data Pos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

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 #

toConstr :: Pos -> Constr #

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 # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

compare :: Pos -> Pos -> Ordering #

(<) :: Pos -> Pos -> Bool #

(<=) :: Pos -> Pos -> Bool #

(>) :: Pos -> Pos -> Bool #

(>=) :: Pos -> Pos -> Bool #

max :: Pos -> Pos -> Pos #

min :: Pos -> Pos -> Pos #

Read Pos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Show Pos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

showsPrec :: Int -> Pos -> ShowS #

show :: Pos -> String #

showList :: [Pos] -> ShowS #

Generic Pos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Associated Types

type Rep Pos :: Type -> Type #

Methods

from :: Pos -> Rep Pos x #

to :: Rep Pos x -> Pos #

Semigroup Pos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

(<>) :: Pos -> Pos -> Pos #

sconcat :: NonEmpty Pos -> Pos #

stimes :: Integral b => b -> Pos -> Pos #

NFData Pos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

rnf :: Pos -> () #

type Rep Pos Source # 
Instance details

Defined in Text.Megaparsec.Pos

type Rep Pos = D1 ('MetaData "Pos" "Text.Megaparsec.Pos" "megaparsec-9.2.1-3fOTDXqyhuM942cL6PMxwC" 'True) (C1 ('MetaCons "Pos" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int)))

mkPos :: Int -> Pos Source #

Construction of Pos from Int. The function throws InvalidPosException when given a non-positive argument.

Since: 6.0.0

unPos :: Pos -> Int Source #

Extract Int from Pos.

Since: 6.0.0

pos1 :: Pos Source #

Position with value 1.

Since: 6.0.0

defaultTabWidth :: Pos Source #

Value of tab width used by default. Always prefer this constant when you want to refer to the default tab width because actual value may change in future.

Currently:

defaultTabWidth = mkPos 8

Since: 5.0.0

newtype InvalidPosException Source #

The exception is thrown by mkPos when its argument is not a positive number.

Since: 5.0.0

Constructors

InvalidPosException Int

Contains the actual value that was passed to mkPos

Instances

Instances details
Eq InvalidPosException Source # 
Instance details

Defined in Text.Megaparsec.Pos

Data InvalidPosException Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> InvalidPosException -> c InvalidPosException #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c InvalidPosException #

toConstr :: InvalidPosException -> Constr #

dataTypeOf :: InvalidPosException -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c InvalidPosException) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c InvalidPosException) #

gmapT :: (forall b. Data b => b -> b) -> InvalidPosException -> InvalidPosException #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> InvalidPosException -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> InvalidPosException -> r #

gmapQ :: (forall d. Data d => d -> u) -> InvalidPosException -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> InvalidPosException -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> InvalidPosException -> m InvalidPosException #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> InvalidPosException -> m InvalidPosException #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> InvalidPosException -> m InvalidPosException #

Show InvalidPosException Source # 
Instance details

Defined in Text.Megaparsec.Pos

Generic InvalidPosException Source # 
Instance details

Defined in Text.Megaparsec.Pos

Associated Types

type Rep InvalidPosException :: Type -> Type #

Exception InvalidPosException Source # 
Instance details

Defined in Text.Megaparsec.Pos

NFData InvalidPosException Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

rnf :: InvalidPosException -> () #

type Rep InvalidPosException Source # 
Instance details

Defined in Text.Megaparsec.Pos

type Rep InvalidPosException = D1 ('MetaData "InvalidPosException" "Text.Megaparsec.Pos" "megaparsec-9.2.1-3fOTDXqyhuM942cL6PMxwC" 'True) (C1 ('MetaCons "InvalidPosException" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int)))

Source position

data SourcePos Source #

The data type SourcePos represents source positions. It contains the name of the source file, a line number, and a column number. Source line and column positions change intensively during parsing, so we need to make them strict to avoid memory leaks.

Constructors

SourcePos 

Fields

Instances

Instances details
Eq SourcePos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Data SourcePos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> SourcePos -> c SourcePos #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c SourcePos #

toConstr :: SourcePos -> Constr #

dataTypeOf :: SourcePos -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c SourcePos) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c SourcePos) #

gmapT :: (forall b. Data b => b -> b) -> SourcePos -> SourcePos #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> SourcePos -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> SourcePos -> r #

gmapQ :: (forall d. Data d => d -> u) -> SourcePos -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> SourcePos -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> SourcePos -> m SourcePos #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> SourcePos -> m SourcePos #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> SourcePos -> m SourcePos #

Ord SourcePos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Read SourcePos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Show SourcePos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Generic SourcePos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Associated Types

type Rep SourcePos :: Type -> Type #

NFData SourcePos Source # 
Instance details

Defined in Text.Megaparsec.Pos

Methods

rnf :: SourcePos -> () #

type Rep SourcePos Source # 
Instance details

Defined in Text.Megaparsec.Pos

type Rep SourcePos = D1 ('MetaData "SourcePos" "Text.Megaparsec.Pos" "megaparsec-9.2.1-3fOTDXqyhuM942cL6PMxwC" 'False) (C1 ('MetaCons "SourcePos" 'PrefixI 'True) (S1 ('MetaSel ('Just "sourceName") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 FilePath) :*: (S1 ('MetaSel ('Just "sourceLine") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Pos) :*: S1 ('MetaSel ('Just "sourceColumn") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Pos))))

initialPos :: FilePath -> SourcePos Source #

Construct initial position (line 1, column 1) given name of source file.

sourcePosPretty :: SourcePos -> String Source #

Pretty-print a SourcePos.

Since: 5.0.0