#ifndef RCALCX_H
#define RCALCX_H

typedef union {
  long alignment;
  char ag_vt_2[sizeof(int)];
  char ag_vt_3[sizeof(long)];
} rcalcx_vs_type;

typedef enum {
  rcalcx_ws_token = 1, rcalcx_calculation_token = 3,
  rcalcx_expression_token, rcalcx_eof_token, rcalcx_term_token,
  rcalcx_factor_token = 9, rcalcx_thousands_token = 15,
  rcalcx_hundreds_token, rcalcx_m_token, rcalcx_hundreds_field_token,
  rcalcx_tens_token, rcalcx_c_token, rcalcx_d_token,
  rcalcx_count_hundreds_token, rcalcx_tens_field_token, rcalcx_units_token,
  rcalcx_x_token, rcalcx_l_token, rcalcx_count_tens_token, rcalcx_i_token,
  rcalcx_v_token, rcalcx_count_units_token, rcalcx_roman_numeral_token = 37
} rcalcx_token_type;

typedef struct rcalcx_pcb_struct{
  rcalcx_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];
  rcalcx_vs_type vs[128];
  int ag_ap;
  const char *error_message;
  char read_flag;
  char exit_flag;
  int input_context;
  int cs[128];
  int bts[128], btsx;
  unsigned char * pointer;
  unsigned char * la_ptr;
  const unsigned char *key_sp;
  int save_index, key_state;
  char ag_msg[82];
} rcalcx_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
void init_rcalcx(rcalcx_pcb_type *);
void rcalcx(rcalcx_pcb_type *);
#endif