Re: Creating a debugger for a bison designed language

[Satya]

oooh.. complicated situation :) The bison generated C parser uses #line
compiler directives to point to the line in the .y file while debugging. i.e.,
if you have a file like grammar.y and generate grammar.tab.c using bison,
and try to debug grammar.tab.c, the debugger can point to corresponding
lines in grammar.y while you single step.

what you are doing is grammar. y ==> grammar.tab.c ==> add some more files
==> compiler for your custom script language that generates DLLs. You have
to figure out a way to embed line number and file name information in your
DLL  such that when it is debugged, the debugger has sufficient knowledge to
point back to the lines in script file. How to do that -- i know not. Also,
it has nothing to do with bison.

satya.

On 1/11/07, Hans Aberg <address@hidden> wrote:
> On 11 Jan 2007, at 19:44, Jachyra wrote:
>
> > If I use bison to essentially parse my
> > language and generate C code (which gets compiled to a windows
> > binary), and
> > then create a debugger that attaches to the DLL that was compiled
> > in debug
> > mode (for the sake of argument, lets say I'm just using dbg), will the
> > debugging information I get from the debugger refer to the lines
> > and symbols
> > in the code that was written in my custom language, or will it be
> > reffering
> > to lines and symbols that are in the bison generated "C" code?
>
> Currently, you only get to debug the parser C-code, and will have to
> use to special techniques to debug the parser itself. But Satya is
> working on a debugger format for the parser itself, so that one can
> follow the position in the .y file. But this may not what you are
> asking for - your project probably asks fro a debugger for the
> compiler of the language you are implementing. If you do not get moe
> info in this mailing list, you might try the Usenet newsgroup
> comp.compilers, and its FAQ, posted there monthly.
>
>    Hans Aberg


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