Re: [Swig-user] same argument name to both INPUT and OUTPUT typemaps

[William S F. <ws...@fu...>]

On 08/03/11 03:59, John Tardif wrote:
> Hi,
> simple question (c++ ->  perl) - haven't been able to find this in any of
> the available doco; I want apply the ***same argument name*** to both an
> INPUT and an OUTPUT typemap. I have two c++ functions one returns an
> argument (vector) and the other takes the return as input - with the
> same argument name used in both functions something like this:
>
>          int getInodes(inodeVector_t&inodes,
>                        uint16_t        flag);
>          ***returns a vector of inodes;
>
>          int setInodes(inodeVector_t&inodes,
>                          uint64_t       file_size,
>                          uint16_t       flag);
>          ***takes the vector as input.
>
> So is it possible to apply&inodes to both INPUT and OUTPUT typemaps?
>

Actually one applies typemaps to variables, not the other way round as 
you mention. If you want to apply different typemaps to parameters that 
have both the type and variable name the same, then you need to put this 
into the appropriate place. For example:


%apply int OUTPUT { inodeVector_t&inodes };

           int getInodes(inodeVector_t&inodes,
                         uint16_t        flag);

%apply int INPUT { inodeVector_t&inodes };

           int setInodes(inodeVector_t&inodes,
                           uint64_t       file_size,
                           uint16_t       flag);

If the method declarations are in a header, you'll have to modify the 
header. Otherwise it gets very hard. You could %ignore the functions, 
then redeclare them outside the header with unique variable names.

William