#ifndef SORT_H
#define SORT_H

typedef union {
  long alignment;
  char ag_vt_2[sizeof(int)];
  char ag_vt_4[sizeof(unsigned char *)];
  char ag_vt_5[sizeof(String)];
} sort_vs_type;

typedef enum {
  sort_words_token = 1, sort_word_token, sort_blank_token,
  sort_char_token = 5, sort_text_token = 7, sort_address_token = 9,
  sort_line_token = 12, sort_grammar_token, sort_eof_token = 16
} sort_token_type;

typedef struct sort_pcb_struct{
  sort_token_type token_number, reduction_token, error_frame_token;
  int input_code;
  int input_value;
  int line, column;
  int ssx, sn, error_frame_ssx;
  int drt, dssx, dsn;
  int ss[128];
  sort_vs_type vs[128];
  int ag_ap;
  const char *error_message;
  char read_flag;
  char exit_flag;
  unsigned char * input_context;
  unsigned char * cs[128];
  int bts[128], btsx;
  char ag_msg[82];
} sort_pcb_type;

#ifndef PRULE_CONTEXT
#define PRULE_CONTEXT(pcb)  (&((pcb).cs[(pcb).ssx]))
#define PERROR_CONTEXT(pcb) ((pcb).cs[(pcb).error_frame_ssx])
#define PCONTEXT(pcb)       ((pcb).cs[(pcb).ssx])
#endif

#ifndef AG_RUNNING_CODE
/* PCB.exit_flag values */
#define AG_RUNNING_CODE         0
#define AG_SUCCESS_CODE         1
#define AG_SYNTAX_ERROR_CODE    2
#define AG_REDUCTION_ERROR_CODE 3
#define AG_STACK_ERROR_CODE     4
#define AG_SEMANTIC_ERROR_CODE  5
#endif

extern sort_pcb_type sort_pcb;
void init_sort(void);
void sort(void);
#endif