Copyright	(c) Eric Mertens 2023
License	ISC
Maintainer	emertens@gmail.com
Safe Haskell	Safe-Inferred
Language	Haskell2010

Toml.Lexer.Utils

Contents

Types
Actions
Alex extension points

Description

This module provides a custom engine for the Alex generated lexer. This lexer drive provides nested states, unicode support, and file location tracking.

Synopsis

type M a = State [Context] a
type Action = String -> M Token
data Context
- = ListContext
- | TableContext
- | ValueContext
value :: (String -> Token) -> Action
value_ :: Token -> Action
token :: (String -> Token) -> Action
token_ :: Token -> Action
enterList :: Action
exitList :: Action
enterTable :: Action
exitTable :: Action
equals :: Action
timeValue :: ParseTime a => String -> [String] -> (a -> Token) -> Action
type AlexInput = Located String
alexGetByte :: AlexInput -> Maybe (Int, AlexInput)

Types

type M a = State [Context] a Source #

type Action = String -> M Token Source #

data Context Source #

Constructors

ListContext	processing an inline list, lex values
TableContext	processing an inline table, don't lex values
ValueContext	processing after an equals, lex one value

Instances

Instances details

Show Context Source #
Instance details Defined in Toml.Lexer.Utils Methods showsPrec :: Int -> Context -> ShowS # show :: Context -> String # showList :: [Context] -> ShowS #

Actions

value :: (String -> Token) -> Action Source #

value_ :: Token -> Action Source #

token :: (String -> Token) -> Action Source #

token_ :: Token -> Action Source #

enterList :: Action Source #

exitList :: Action Source #

enterTable :: Action Source #

exitTable :: Action Source #

equals :: Action Source #

timeValue :: ParseTime a => String -> [String] -> (a -> Token) -> Action Source #

Alex extension points

type AlexInput = Located String Source #

alexGetByte :: AlexInput -> Maybe (Int, AlexInput) Source #