diff options
Diffstat (limited to 'src/Text/Pandoc/Parsing.hs')
| -rw-r--r-- | src/Text/Pandoc/Parsing.hs | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/Text/Pandoc/Parsing.hs b/src/Text/Pandoc/Parsing.hs index c6be48d19..e6157dde3 100644 --- a/src/Text/Pandoc/Parsing.hs +++ b/src/Text/Pandoc/Parsing.hs @@ -50,6 +50,7 @@ module Text.Pandoc.Parsing ( anyLine, enclosed, stringAnyCase, parseFromString, + parseFromString', lineClump, charsInBalanced, romanNumeral, @@ -358,7 +359,10 @@ stringAnyCase (x:xs) = do return (firstChar:rest) -- | Parse contents of 'str' using 'parser' and return result. -parseFromString :: Monad m => ParserT String st m a -> String -> ParserT String st m a +parseFromString :: Monad m + => ParserT String st m a + -> String + -> ParserT String st m a parseFromString parser str = do oldPos <- getPosition oldInput <- getInput @@ -370,6 +374,18 @@ parseFromString parser str = do setPosition oldPos return result +-- | Like 'parseFromString' but specialized for 'ParserState'. +-- This resets 'stateLastStrPos', which is almost always what we want. +parseFromString' :: Monad m + => ParserT String ParserState m a + -> String + -> ParserT String ParserState m a +parseFromString' parser str = do + oldStrPos <- stateLastStrPos <$> getState + res <- parseFromString parser str + updateState $ \st -> st{ stateLastStrPos = oldStrPos } + return res + -- | Parse raw line block up to and including blank lines. lineClump :: Stream [Char] m Char => ParserT [Char] st m String lineClump = blanklines |