Still doesn't deal with #ifdef and #endif and #else properly

EG:

``````
#define SIZE 3

//@json
struct jstruct_annotated_struct {
    int some_field;
#define CANT_EXPAND_SOME_ARRAY
#ifndef CANT_EXPAND_SOME_ARRAY
   unsigned int some_array[SIZE];
#endif
// ideally #else would work here too.
#ifdef CANT_EXPAND_SOME_ARRAY
    unsigned int some_array_0;
    unsigned int some_array_1;
    unsigned int some_array_2;
#endif
}```

fails to parse.
``````
