problem creating a berkeley db binding

[JT]

Sergey Gromov Wrote:

> Sun, 30 Aug 2009 11:28:16 -0400, JT wrote:
> 
> > i'm trying to create a binding for berkeley db dll and quickly ran
> > into some problems, how do i translate statement below.
> > 
> > int DB->open(DB *db, DB_TXN *txnid, const char *file,
> >     const char *database, DBTYPE type, u_int32_t flags, int mode);
> 
> This is not a valid C or C++ statement, nor a declaration.  It's usually
> hard to translate an invalid code to a different language.
> 
> > my normal approach would be,
> > 
> > extern (C) {
> > 	int function(DB* db, DB_TXN* txnid, char* file, char* database, DBTYPE type, u_int32_t flags, int mode) DB->open;
> > }
> 
> If open() is a method of DB struct then it uses some sort of C++ calling
> convention, probably thiscall.  Thiscall is incompatilbe with cdecl, so
> extern(C) won't work.
> 
> > but real problem is 'DB->open', can anoybody suggest a workaround for
> > this. DB is just a simple struct (struct DB;)
> 
> I can only guess here that what you want is
> 
> extern(C++) interface DB {
>     int open(DB_TXN* txnid, char* file, char* database, DBTYPE type, u_int32_t flags, int mode);
> }
> 
> But, without a link to source you try to bind to, it's only a wild
> guess.

thanks, unfortunately the source is too long to include here, it was a Berkeley DB from Oracle. is there a binding already made for this library. :P