Andreas,
I need some advice regarding Wave. What I want to do is to operate with Wave on a token stream and extract the token stream representing macro calls after expansion. The twist is that I want the token stream after expansion to have the positions that another preprocessor would see on the already expanded output from Wave. E.g: #define MACRO_CALL int x; int main(){ MACRO };
Exands into #line 2 int main(){ int x; };
Where 'int x' should have a position of line 3 instead of line 1 after expansion. I also want the column number to represent what we see on line 3 instead of what we see on line 1. Is this possible ?
Ok, I've added a new pp hook (what else? :-P) to Wave: /////////////////////////////////////////////////////////////////////////// // // The function 'generated_token' will be called by the library whenever a // token is about to be returned from the library. // // The parameter 'ctx' is a reference to the context object used for // instantiating the preprocessing iterators by the user. // // The parameter 't' is the token about to be returned from the library. // This function may alter the token, but in this case it must be // implemented with a corresponding signature: // // Token const& // generated_token(Context const& ctx, Token& t); // // which makes it possible to modify the token in place. // // The default behavior is to return the token passed as the parameter // without modification. // /////////////////////////////////////////////////////////////////////////// template <typename Context, typename Token> Token const& generated_token(Context const& ctx, Token const& t) { return t; } This should help solving your problem. To show how this hook function may help you I added a new sample 'real_positions' to Wave demonstrating its use. Everything is in the Boost CVS::HEAD. HTH Regards Hartmut