typedef struct _li {
  /*  Declaration Specifiers */
  TRnode *decl_spec;
  /*  Delcaration of function.  */
  TRnode *decl;
  /*  Declaration of parameters.  */
  TRnode *decl_list;
  
  TRnode *list_decl_spec;
  TRnode *list_decl;
  TRnode *list_decl_list;

  char *comment;
  struct _li *next;
} LInode;

extern LInode *li_head;
extern LInode *li_tail;