[Haskell-cafe] parsec get line number of lexems

[Olivier Duhart]

hello,

I am experimenting with parsec.
I am building a very simple language.
I have a (almost) wholy funcrionning language : syntactic check, AST building and byte code génération.
Now i want to improve error checking (type checking more precisely). this should be done on the  AST basis.
but in the ast i lose the line number information for precise error message. 

so my question is : is ther a way to get the line numbers at parsers level ? i would then store it in the ast for semantic check purpose

thanks for your answers

Olivier