Re: [Opencxx-users] OpenC++ with MSVC

[Grzegorz J. <ja...@ac...>]

Hi,

Sorry for the late reply, I was traveling and unable to access my e-mail.

Dr Gorilla wrote:
> Ok Im building the two occ core libs in visual studio - but i had to
> drop down to cygwin to build the ptree-generated file.

The plan is to rewrite this part in Python. Should be very 
straighforward, pls. do it if you have time and interest.

> anyway im finding an odd problem:
> 
> if I code -
> 
>     Opencxx::ProgramString* ps = new Opencxx::ProgramString;
>     *ps << "{}";
> 
>     Opencxx::Program* program = ps;
> 
>     Lex lexer(program);
>     Parser parser(&lexer, errorLog);
>     
>     // parse tree
>     Ptree* result;
>     parser.rDefinition(result);
> 
> 
> 
> no matter what i place into the source string its getting into an
> infinite loop inside the Lex ctor
> 
>     do
>     {
>         kind = ReadToken(pos, len);
>         tokens_.push_back(Token(kind, pos, len));
>     }
>     while (kind);
> 
> when ReadToken hits an end of string (0 terminator) its just backing
> up and returning the last character....
> 
> 
> am i doing something wrong ?

Nope. It was a bug, which I have hopefully fixed. Some code in Lex.cc 
erroneously assumed that Program::Get() can always be undone by 
Program::Unget(). This is not true if Program::Get() returns EOF. See 
last postings on opencxx-commits mailing list for detailed account of 
what I have changed. My fixes went into occ-lib, so if you want them in
opencxx proper, please backport (and ideally commit to our CVS).

Best regards
Grzegorz