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/usr/include/xbt/automaton.h is in libsimgrid-dev 3.10-7.

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#ifndef _XBT_AUTOMATON_H
#define _XBT_AUTOMATON_H

#include <stdlib.h>
#include <string.h>
#include <xbt/dynar.h>
#include <xbt/sysdep.h>
#include <xbt/graph.h>

SG_BEGIN_DECL()

typedef struct xbt_automaton_state {
  char* id;
  int type; /* -1 = init, 0 = inter, 1 = final */
  xbt_dynar_t in;
  xbt_dynar_t out;
} s_xbt_automaton_state;

typedef struct xbt_automaton_state* xbt_automaton_state_t;

typedef struct xbt_automaton {
  xbt_dynar_t propositional_symbols;
  xbt_dynar_t transitions;
  xbt_dynar_t states;
  xbt_automaton_state_t current_state;
} s_xbt_automaton;

typedef struct xbt_automaton* xbt_automaton_t;

typedef struct xbt_automaton_exp_label{
  enum{or=0, and=1, not=2, predicat=3, one=4} type;
  union{
    struct{
      struct xbt_automaton_exp_label* left_exp;
      struct xbt_automaton_exp_label* right_exp;
    }or_and;
    struct xbt_automaton_exp_label* exp_not;
    char* predicat;
  }u;
} s_xbt_automaton_exp_label;

typedef struct xbt_automaton_exp_label* xbt_automaton_exp_label_t;


typedef struct xbt_automaton_transition {
  xbt_automaton_state_t src;
  xbt_automaton_state_t dst;
  xbt_automaton_exp_label_t label;
} s_xbt_automaton_transition;

typedef struct xbt_automaton_transition* xbt_automaton_transition_t;


typedef struct xbt_automaton_propositional_symbol{
  char* pred;
  void* function;
} s_xbt_automaton_propositional_symbol;

typedef struct xbt_automaton_propositional_symbol* xbt_automaton_propositional_symbol_t;


XBT_PUBLIC(xbt_automaton_t) xbt_automaton_new(void);

XBT_PUBLIC(void) xbt_automaton_load(xbt_automaton_t automaton, const char *file);

XBT_PUBLIC(xbt_automaton_state_t) xbt_automaton_state_new(xbt_automaton_t a, int type, char* id);

XBT_PUBLIC(xbt_automaton_transition_t) xbt_automaton_transition_new(xbt_automaton_t a, xbt_automaton_state_t src, xbt_automaton_state_t dst, xbt_automaton_exp_label_t label);

XBT_PUBLIC(xbt_automaton_exp_label_t) xbt_automaton_exp_label_new(int type, ...);

XBT_PUBLIC(xbt_dynar_t) xbt_automaton_get_states(xbt_automaton_t a);

XBT_PUBLIC(xbt_dynar_t) xbt_automaton_get_transitions(xbt_automaton_t a);

XBT_PUBLIC(xbt_automaton_transition_t) xbt_automaton_get_transition(xbt_automaton_t a, xbt_automaton_state_t src, xbt_automaton_state_t dst);

XBT_PUBLIC(xbt_automaton_state_t) xbt_automaton_transition_get_source(xbt_automaton_transition_t t);

XBT_PUBLIC(xbt_automaton_state_t) xbt_automaton_transition_get_destination(xbt_automaton_transition_t t);

XBT_PUBLIC(void) xbt_automaton_transition_set_source(xbt_automaton_transition_t t, xbt_automaton_state_t src);

XBT_PUBLIC(void) xbt_automaton_transition_set_destination(xbt_automaton_transition_t t, xbt_automaton_state_t dst);

XBT_PUBLIC(xbt_dynar_t) xbt_automaton_state_get_out_transitions(xbt_automaton_state_t s);

XBT_PUBLIC(xbt_dynar_t) xbt_automaton_state_get_in_transitions(xbt_automaton_state_t s);

XBT_PUBLIC(xbt_automaton_state_t) xbt_automaton_state_exists(xbt_automaton_t a, char *id); 

XBT_PUBLIC(void) xbt_automaton_display(xbt_automaton_t a);

XBT_PUBLIC(void) xbt_automaton_exp_label_display(xbt_automaton_exp_label_t l);

XBT_PUBLIC(xbt_automaton_propositional_symbol_t) xbt_automaton_propositional_symbol_new(xbt_automaton_t a, const char* id, void* fct);

XBT_PUBLIC(xbt_automaton_state_t) xbt_automaton_get_current_state(xbt_automaton_t a);

XBT_PUBLIC(int) xbt_automaton_state_compare(xbt_automaton_state_t s1, xbt_automaton_state_t s2);

XBT_PUBLIC(int) xbt_automaton_propositional_symbols_compare_value(xbt_dynar_t s1, xbt_dynar_t s2);

XBT_PUBLIC(int) xbt_automaton_transition_compare(const void *t1, const void *t2);

XBT_PUBLIC(int) xbt_automaton_exp_label_compare(xbt_automaton_exp_label_t l1, xbt_automaton_exp_label_t l2);

XBT_PUBLIC(void) xbt_automaton_state_free_voidp(void *s);

XBT_PUBLIC(void) xbt_automaton_state_free(xbt_automaton_state_t s);

XBT_PUBLIC(void) xbt_automaton_transition_free_voidp(void *t);

XBT_PUBLIC(void) xbt_automaton_exp_label_free_voidp(void *e);

XBT_PUBLIC(void) xbt_automaton_propositional_symbol_free_voidp(void *ps);

XBT_PUBLIC(void) xbt_automaton_free(xbt_automaton_t a);

SG_END_DECL()

#endif