#ifndef EVAL-E_H
#define EVAL-E_H

typedef union {
  double alignment;
  char ag_vt_2[sizeof(int)];
  char ag_vt_4[sizeof(double)];
} evalKernel_vs_type;

typedef enum {
  evalKernel_white_space_token = 1, evalKernel_input_string_token = 4,
  evalKernel_expressions_token, evalKernel_eof_token,
  evalKernel_expression_token, evalKernel_conditional_expression_token = 10,
  evalKernel_logical_or_expression_token = 16,
  evalKernel_logical_and_expression_token = 19,
  evalKernel_equality_expression_token = 21,
  evalKernel_relational_expression_token = 23,
  evalKernel_additive_expression_token = 26,
  evalKernel_multiplicative_expression_token = 31,
  evalKernel_factor_token = 34, evalKernel_primary_token = 37,
  evalKernel_arguments_token = 40, evalKernel_argument_list_token = 43,
  evalKernel_simple_real_token = 56, evalKernel_exponent_token = 59,
  evalKernel_integer_part_token, evalKernel_fraction_part_token = 62,
  evalKernel_digit_token = 64, evalKernel_letter_token,
  evalKernel_name_token = 74, evalKernel_real_token = 94
} evalKernel_token_type;

typedef struct evalKernel_pcb_struct{
  evalKernel_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];
  evalKernel_vs_type vs[128];
  int ag_ap;
  const char *error_message;
  char read_flag;
  char exit_flag;
  int bts[128], btsx;
  int (* const  *gt_procs)(void);
  int (* const *r_procs)(void);
  int (* const *s_procs)(void);
  int lab[3], rx, fx;
  const unsigned char *key_sp;
  int save_index, key_state;
  int ag_error_depth, ag_min_depth, ag_tmp_depth;
  int ag_rss[2*128], ag_lrss;
  int ag_rk1, ag_tk1;
  char ag_msg[82];
  int ag_resynch_active;
} evalKernel_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 evalKernel_pcb_type evalKernel_pcb;
void init_evalKernel(void);
void evalKernel(void);
#endif