hoccontext.h

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#ifndef hoccontext_h
#define hoccontext_h


extern Object* hoc_thisobject;
extern Objectdata* hoc_top_level_data;
extern Symlist* hoc_top_level_symlist;
extern Symlist* hoc_symlist;

#define HocTopContextSet                   \
  HocContext hcref;                        \
  HocContext* hc_ = 0;                     \
  if (hoc_thisobject) {                    \
    hc_ = hc_save_and_set_to_top_(&hcref); \
  }

#define HocContextRestore \
  if (hc_) {              \
    hc_restore_(hc_);     \
  }

typedef struct HocContext {
  Object* obj;
  Objectdata* obd;
  Symlist* sl;
} HocContext;

static HocContext* hc_save_and_set_to_top_(HocContext* hc) {
  hc->obj = hoc_thisobject;
  hc->obd = hoc_objectdata;
  hc->sl = hoc_symlist;
  hoc_thisobject = 0;
  hoc_objectdata = hoc_top_level_data;
  hoc_symlist = hoc_top_level_symlist;
  return hc;
}
static void hc_restore_(HocContext* hc) {
  hoc_thisobject = hc->obj;
  hoc_objectdata = hc->obd;
  hoc_symlist = hc->sl;
}
#endif