Le 14/04/2012 12:35, Manu a écrit :
On 13 April 2012 18:25, Jakob Ovrum <jakobov...@gmail.com <mailto:jakobov...@gmail.com>> wrote:On Friday, 13 April 2012 at 13:08:51 UTC, deadalnix wrote: SDC have a lot of theses, and I proposed a similar stuff for its evolution. I think it is easier for SDC than it is for dmd considering the codebase of both. I think we've got the lexer and parser completely separate from most of the rest of the codebase (like the codegen), due to repeated requests from people who wanted to use these parts for IDEs and other tools. I've yet to see anyone actually go through with using it though, possibly because there is no documentation for a lot of it. Documenting these parts fully into something of a public API and then putting it online is definitely on the todo list. Perhaps there would be more motivation to do this rather than work on something else if someone actually tried using SDC in their project instead of just talking about it, so it's kind of a catch-22. That said, the parser is currently evolving alongside the codegen. When we want to start implementing new parts of the language, we iteratively add it to the parser, hence it's not complete. It's very easy to work with though and it's mostly a menial task (although it's kind of fun to produce beautiful parser errors :P). Anyway, for anyone interested, you can find us on Github and #d.sdc on FreeNode. Just out of curiosity, why would anyone write a code gen these days? With projects like LLVM, which can perform great codegen to basically any architecture, you'd be crazy not to use that... Surely 90% of the value of writing your own D compiler would be the unique front end, which may have different design principles (like use as a lib, usable on tools and stuff as discussed here) ? I'm sorry to say, if you write your own codegen, I would never use your compiler. If you use LLVM in the back end, I'll definitely give it a look, then merit will depend entirely on the front end (speed, flexibility, quality of error messages, runtime error detection, etc). I know it's a fun exercise to write a codegen, so from an educational perspective, sure, it's valuable to you as a programmer, but I don't think it helps your project at all.
Codegen is done by LLVM in SDC, but you still need some codegen glue.
