Simple-fortran-parser

Brief description

Tools for parsing a fortran file.

The main module: fortran_file.py : contains the different classes that correspond to a fortran file content (Modules, routines, declarations).

Different executable scripts are provided to perform operations on the fortran files (see next section).

Usage and examples

The parser can be used to:

• rewrite a file (in a standardized way)
• write header files for bind(C) routines (for dlls and shared objects)
• write def files for bind(C) routines (for windows dll)
• Automatically write some tools for derived types (read/write)

Look (and make) in the test directory to see what the script can do.

Generation of headers from fortran file

Usage:

python fortran_signature_gen.py File.f90

If the file File.f90 has the following content:

subroutine it_setTmax(t_max_in) BIND(C,name='it_setTmax')
    real(C_DOUBLE),intent(in) :: t_max_in;
    call setTmax(real(t_max_in,MK))
end subroutine
integer(C_INT) function it_time_increment() BIND(C,name='it_incrementtime')
    it_time_increment=12;
end function

this will generate the following header file

void it_settmax(double* t_max_in);
int it_incrementtime();

Limitations

The script is not general. No parsing of the routine contents is done. The parser is limited to verbose fortran 90 declarations with ::, as:

    real(MK), dimension(:), intent(inout) :: A !<

The following declarations are also supported:

    real*8  :: A(3), B(:,:), x, C( n(1) , n(2) )

The declaration above will be converted to its verbose form:

    real*8, dimension(3)        :: A
    real*8, dimension(:,:)      :: B
    real*8                      :: x
    real*8, dimension(n(1),n(2)):: C