tgbaexplicit.cc 3.76 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
#include "ltlast/atomic_prop.hh"
#include "tgbaexplicit.hh"
#include <cassert>

namespace spot
{

  ////////////////////////////////////////
  // tgba_explicit_succ_iterator

  tgba_explicit_succ_iterator::tgba_explicit_succ_iterator
  (const tgba_explicit::state* s)
    : s_(s)
  {
  }

  void 
  tgba_explicit_succ_iterator::first()
  {
    i_ = s_->begin();
  }

  void 
  tgba_explicit_succ_iterator::next()
  {
    ++i_;
  }

  bool 
  tgba_explicit_succ_iterator::done()
  {
    return i_ == s_->end();
  }

  state_explicit* 
  tgba_explicit_succ_iterator::current_state()
  {
    return new state_explicit((*i_)->dest);
  }

  bdd 
  tgba_explicit_succ_iterator::current_condition()
  {
    return (*i_)->condition;
  }

  bdd 
  tgba_explicit_succ_iterator::current_promise()
  {
    return (*i_)->promise;
  }


  ////////////////////////////////////////
  // state_explicit

  const tgba_explicit::state* 
  state_explicit::get_state() const
  {
    return state_;
  }

  int
  state_explicit::compare(const spot::state* other) const
  {
    const state_explicit* o = dynamic_cast<const state_explicit*>(other);
    assert(o);
    return o->get_state() - get_state();
  }

  ////////////////////////////////////////
  // tgba_explicit


  tgba_explicit::tgba_explicit()
    : init_(0)
  {
  }

  tgba_explicit::~tgba_explicit()
  {
    ns_map::iterator i;
    for (i = name_state_map_.begin(); i != name_state_map_.end(); ++i)
      {
	tgba_explicit::state::iterator i2;
	for (i2 = i->second->begin(); i2 != i->second->end(); ++i2)
	  delete *i2;
	delete i->second;
      }
  }
  
  tgba_explicit::state*
  tgba_explicit::add_state(const std::string& name)
  {
    ns_map::iterator i = name_state_map_.find(name);
    if (i == name_state_map_.end())
      {
	tgba_explicit::state* s = new tgba_explicit::state;
	name_state_map_[name] = s;
	state_name_map_[s] = name;

	// The first state we add is the inititial state.
	if (! init_)
	  init_ = s;

	return s;
      }
    return i->second;
  }

  tgba_explicit::transition*
  tgba_explicit::create_transition(const std::string& source, 
				   const std::string& dest)
  {
    tgba_explicit::state* s = add_state(source);
    tgba_explicit::state* d = add_state(dest);
    transition* t = new transition;
    t->dest = d;
    t->condition = bddtrue;
    t->promise = bddtrue;
    s->push_back(t);
    return t;
  }

  void tgba_explicit::add_condition(transition* t, ltl::formula* f)
  {
    assert(dynamic_cast<ltl::atomic_prop*>(f));
    tgba_bdd_dict::fv_map::iterator i = dict_.var_map.find(f);
    int v;
    if (i == dict_.var_map.end())
      {
	v = create_node();
	dict_.var_map[f] = v;
	dict_.var_formula_map[v] = f;
      }
    else
      {
	v = i->second;
      }
    t->condition &= ithvar(v);
  }

  void tgba_explicit::add_promise(transition* t, ltl::formula* f)
  {
    tgba_bdd_dict::fv_map::iterator i = dict_.prom_map.find(f);
    int v;
    if (i == dict_.prom_map.end())
      {
	v = create_node();
	dict_.prom_map[f] = v;
	dict_.prom_formula_map[v] = f;
      }
    else
      {
	v = i->second;
      }
    t->promise &= ithvar(v);
  }

  state* 
  tgba_explicit::get_init_state() const
  {
    return new state_explicit(init_);
  }

  tgba_succ_iterator* 
  tgba_explicit::succ_iter(const spot::state* state) const
  {
    const state_explicit* s = dynamic_cast<const state_explicit*>(state);
    assert(s);
    return new tgba_explicit_succ_iterator(s->get_state());
  }
    
  const tgba_bdd_dict& 
  tgba_explicit::get_dict() const
  {
    return dict_;
  }

  std::string 
  tgba_explicit::format_state(const spot::state* s) const
  {
    const state_explicit* se = dynamic_cast<const state_explicit*>(s);
    assert(se);
    sn_map::const_iterator i = state_name_map_.find(se->get_state());
    assert(i != state_name_map_.end());
    return i->second;
  }

}