Dear all, I have a Haskell program with a textual interface (Textareas in CGI, actually) where the user has to type/edit representations of Haskell data in several places (handled with Read/Show, for the moment). Now for each such input field, I want to add a link to the haddockumentation or source code of the corresponding data declaration, and preferrably without changing (much) of the program it is large, and the interface is generic: the actual textarea does not know anything about the type of its contents, other than being an instance of Read and Show. What would be a good way to obtain this information automatically? Probably I want a class with a method giving sth. like source_location_of ( _ :: Data.Map k v ) = [ "Data", "Map" ] where instances are derived automatically. Could be done with DrIFT perhaps ... (But I think I need the package name for the module as well.) Any ideas or pointers would be welcome. -- -- Johannes Waldmann -- Tel/Fax (0341) 3076 6479/80 -- ---- http://www.imn.htwk-leipzig.de/~waldmann/ -------