DDS past semantic check

DDS past full semantic check

Dataset {

    Int32 a;

    Structure {

        Int32 b;

        Float64 c;

        String d;

    } e;

    Structure {

        Int32 b;

        Float64 c;

        String d;

    } f;

    Grid {

      Array:

        Byte xy[x = 12][y = 12];

      Maps:

        Float64 x[12];

        Float64 y[12];

    } g;

    Sequence {

        Int16 j;

        Sequence {

            Int16 i;

        } h;

    } k;

} ascii_output_test;