Copyright	(c) comp 2020
License	MIT
Maintainer	onecomputer00@gmail.com
Stability	stable
Portability	portable
Safe Haskell	Safe-Inferred
Language	Haskell2010

Hectoparsec.Pos

Contents

Positional data

Description

Data type for source position.

Synopsis

data Pos = Pos {
- posFile :: !FilePath
- posLine :: !Int
- posColumn :: !Int
}
initialPos :: FilePath -> Pos
updatePos :: (a -> Bool) -> a -> Pos -> Pos

Positional data

data Pos Source #

The position of a token within the source text.

Constructors

Pos
Fields posFile :: !FilePath The source file path. posLine :: !Int The line number, starting at 1. posColumn :: !Int The column number, starting at 1.

Instances

Instances details

Show Pos Source #
Instance details Defined in Hectoparsec.Pos Methods showsPrec :: Int -> Pos -> ShowS Source # show :: Pos -> String Source # showList :: [Pos] -> ShowS Source #
Eq Pos Source #
Instance details Defined in Hectoparsec.Pos Methods (==) :: Pos -> Pos -> Bool Source # (/=) :: Pos -> Pos -> Bool Source #
Ord Pos Source #
Instance details Defined in Hectoparsec.Pos Methods compare :: Pos -> Pos -> Ordering Source # (<) :: Pos -> Pos -> Bool Source # (<=) :: Pos -> Pos -> Bool Source # (>) :: Pos -> Pos -> Bool Source # (>=) :: Pos -> Pos -> Bool Source # max :: Pos -> Pos -> Pos Source # min :: Pos -> Pos -> Pos Source #

initialPos :: FilePath -> Pos Source #

Creates a Pos for the start of a source text (line 1, column 1) with a given file path.

updatePos Source #

Arguments

:: (a -> Bool)	Whether the token is a new line.
-> a	The token.
-> Pos	The position to update.
-> Pos

Updates position based on a character-like token.

Tokens which are considered newlines will increment the line number by 1 and set the column number to 1. Otherwise, the column number is incremented by one.