blob: d284126eef7f13bdc1466d65e0fffd7cc239a7d0 (
plain)
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
|
/********************* */
/*! \file term_registry.h
** \verbatim
** Top contributors (to current version):
** Mudathir Mohamed
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Bags state object
**/
#include "cvc4_private.h"
#ifndef CVC4__THEORY__BAGS__TERM_REGISTRY_H
#define CVC4__THEORY__BAGS__TERM_REGISTRY_H
#include <map>
#include <vector>
#include "context/cdhashmap.h"
#include "theory/bags/inference_manager.h"
#include "theory/bags/solver_state.h"
namespace CVC4 {
namespace theory {
namespace bags {
/**
* Term registry, the purpose of this class is to maintain a database of
* commonly used terms, and mappings from bags to their "proxy variables".
*/
class TermRegistry
{
typedef context::CDHashMap<Node, Node, NodeHashFunction> NodeMap;
public:
TermRegistry(SolverState& state, InferenceManager& im);
/**
* Returns the existing empty bag for type tn
* or creates a new one and returns it.
**/
Node getEmptyBag(TypeNode tn);
private:
/** The inference manager */
InferenceManager& d_im;
/** Map from bag terms to their proxy variables */
NodeMap d_proxy;
/** Backwards map of above */
NodeMap d_proxy_to_term;
/** Map from types to empty bag of that type */
std::map<TypeNode, Node> d_emptybag;
}; /* class Term */
} // namespace bags
} // namespace theory
} // namespace CVC4
#endif /* CVC4__THEORY__BAGS__TERM_REGISTRY_H */
|
