Unable to parse idl file containing expressions correctly.

[duchengyao]

If an expression is included, the expression will be incorrectly parsed into the variable name in the .i file.

idl:

struct RawData{
    float raw_data[2*2];
};

$ fastddsgen -python raw.idl
$ mkdir build; cd build ;cmake ..; make

openjdk version "11.0.16" 2022-07-19
OpenJDK Runtime Environment (build 11.0.16+8-post-Ubuntu-0ubuntu122.04)
OpenJDK 64-Bit Server VM (build 11.0.16+8-post-Ubuntu-0ubuntu122.04, mixed mode, sharing)
Loading templates...
Processing the file raw.idl...
Generating Type definition files...
Generating Swig interface files...
Generating TopicDataTypes files...
Generating Swig interface files...
Adding project: raw.idl

.......

[ 66%] Swig compile raw.i for python
/opt/ros/humble/include/fastrtps/fastdds/dds/core/LoanableTypedCollection.hpp:68: Warning 389: operator[] ignored (consider using %extend)
/opt/ros/humble/include/fastrtps/fastdds/dds/core/LoanableTypedCollection.hpp:93: Warning 389: operator[] ignored (consider using %extend)
/home/s1nh/project/tmp/idl/raw.i:68: Error: Syntax error in input(1).
make[2]: *** [CMakeFiles/rawWrapper_swig_compilation.dir/build.make:76: CMakeFiles/rawWrapper.dir/rawPYTHON.stamp] Error 1
make[2]: *** Deleting file 'CMakeFiles/rawWrapper.dir/rawPYTHON.stamp'
make[1]: *** [CMakeFiles/Makefile2:140: CMakeFiles/rawWrapper_swig_compilation.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

In raw.i :L68

%template(float_2*2_array) std::array<float,2*2>;

The variable name is incorrect containing 2*2.