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Option to change whitespace in token parsing. #44

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Option to change whitespace in token parsing. #44

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13 changes: 12 additions & 1 deletion Text/Parsec/Token.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ module Text.Parsec.Token
, TokenParser
, GenTokenParser (..)
, makeTokenParser
, makeTokenParser'
) where

import Data.Char ( isAlpha, toLower, toUpper, isSpace, digitToInt )
Expand Down Expand Up @@ -343,7 +344,17 @@ data GenTokenParser s u m

makeTokenParser :: (Stream s m Char)
=> GenLanguageDef s u m -> GenTokenParser s u m
makeTokenParser languageDef
makeTokenParser = makeTokenParser' isSpace


-- | Same as @makeTokenParser@, but a function which determines whether or
-- not a character should count as whitespace is provided. This is
-- useful for parsing languages like Python, which depend upon
-- indentation and newlines for syntax.

makeTokenParser' :: (Stream s m Char)
=> (Char -> Bool) -> GenLanguageDef s u m -> GenTokenParser s u m
makeTokenParser' isSpace languageDef
= TokenParser{ identifier = identifier
, reserved = reserved
, operator = operator
Expand Down