> Here's where the error is emitted from: > https://github.com/dlang/dmd/blob/e58579a73438e62a16c0c43dc33ce8d36b520edd/src/dmd/func.d#L> 2788-L2790
Thanks for the help Mike! Didn't see your message till now and so yesterday, I also stopped here by intuitively doing pretty much the same steps. So here was my first time in dmd codebase in case any newcomer finds it helpful: - The main() function is in mars.d, always good to know. :P - First, I changed the usage message in usage() function. - Then, I changed some stuff on the lexer, which is in lexer.d and then on the parser. Actually, these are 2 things I have wrote many times, so it's easy for me to understand that code but I think for everyone, the lexer is the next easiest big thing to experiment with. Also, understanding the parser (or parts of it), makes you understand the language a little better. > expressions --> expressionsem.d --> lowered expressions > lowered expressions --> e2ir --> intermediate representation I did not figure that. I guess that expressions -> lowered expressions has somewhere the 3 semantic passes that you see described in the dmd source code guide. [1] Searching for "semantic" in mars.d will get you here [2]. in which semantic analysis is done for every module. Now, from there on the not-so-fun part starts. :P Following dSymbolSemantic, will probably lead you here [3] in dsymbolsem.d which will in turn lead you here [4] which led me here [5] because of the issue. And... I didn't understand a thing. So then I said, ok, let's do a "search the whole project" search, to find the error message that Mike found. Then, disappointed I went to sleep. :P This error message is when we try to resolve a call, as one would expect, i.e. when we try to instantiate the function. However, I guess one has to understand how also the function declaration is analysed and possibly a bunch of other things that I don't know. From my perspective, it will take more than extensive debugging to get a good understanding on the problem. Let me point that I have not written a very complex semantic analyzer, but I do know the basics of semantic analysis (and the visitor pattern coming with it) and still, that was very rough. Any help is welcome! Btw, if any newcomer sees this and wants help with things I am somewhat comfortable (i.e. lexing, parsing), please don't hesitate to ask! - Stefanos [1] https://wiki.dlang.org/DMD_Source_Guide#Compilation_cycle [2] https://github.com/dlang/dmd/blob/master/src/dmd/mars.d#L566 [3] https://github.com/dlang/dmd/blob/master/src/dmd/dsymbolsem.d#L554 [4] https://github.com/dlang/dmd/blob/master/src/dmd/dsymbolsem.d#L632 [5] https://github.com/dlang/dmd/blob/master/src/dmd/dsymbolsem.d#L3062 P.S. I guess using the "Reply" in forum is not the right way to reply. I was trying to do that for 15 minutes and I thought I should respond to the mail which I hope, will get the message posted. _______________________________________________ dmd-internals mailing list [email protected] http://lists.puremagic.com/mailman/listinfo/dmd-internals
