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
|
/********************* */
/*! \file valuation.cpp
** \verbatim
** Original author: Morgan Deters
** Major contributors: Dejan Jovanovic
** Minor contributors (to current version): Andrew Reynolds, Clark Barrett, Tim King
** This file is part of the CVC4 project.
** Copyright (c) 2009-2014 New York University and The University of Iowa
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief A "valuation" proxy for TheoryEngine
**
** Implementation of Valuation class.
**/
#include "expr/node.h"
#include "theory/valuation.h"
#include "theory/theory_engine.h"
#include "theory/rewriter.h"
namespace CVC4 {
namespace theory {
bool equalityStatusCompatible(EqualityStatus s1, EqualityStatus s2) {
switch (s1) {
case EQUALITY_TRUE:
case EQUALITY_TRUE_IN_MODEL:
case EQUALITY_TRUE_AND_PROPAGATED:
switch (s2) {
case EQUALITY_TRUE:
case EQUALITY_TRUE_IN_MODEL:
case EQUALITY_TRUE_AND_PROPAGATED:
return true;
default:
return false;
}
break;
case EQUALITY_FALSE:
case EQUALITY_FALSE_IN_MODEL:
case EQUALITY_FALSE_AND_PROPAGATED:
switch (s2) {
case EQUALITY_FALSE:
case EQUALITY_FALSE_IN_MODEL:
case EQUALITY_FALSE_AND_PROPAGATED:
return true;
default:
return false;
}
break;
default:
return false;
}
}
bool Valuation::isSatLiteral(TNode n) const {
return d_engine->getPropEngine()->isSatLiteral(n);
}
Node Valuation::getSatValue(TNode n) const {
if(n.getKind() == kind::NOT) {
Node atomRes = d_engine->getPropEngine()->getValue(n[0]);
if(atomRes.getKind() == kind::CONST_BOOLEAN) {
return NodeManager::currentNM()->mkConst(!atomRes.getConst<bool>());
} else {
Assert(atomRes.isNull());
return atomRes;
}
} else {
return d_engine->getPropEngine()->getValue(n);
}
}
bool Valuation::hasSatValue(TNode n, bool& value) const {
if (d_engine->getPropEngine()->isSatLiteral(n)) {
return d_engine->getPropEngine()->hasValue(n, value);
} else {
return false;
}
}
EqualityStatus Valuation::getEqualityStatus(TNode a, TNode b) {
return d_engine->getEqualityStatus(a, b);
}
Node Valuation::getModelValue(TNode var) {
return d_engine->getModelValue(var);
}
Node Valuation::ensureLiteral(TNode n) {
return d_engine->ensureLiteral(n);
}
bool Valuation::isDecision(Node lit) const {
return d_engine->getPropEngine()->isDecision(lit);
}
unsigned Valuation::getAssertionLevel() const{
return d_engine->getPropEngine()->getAssertionLevel();
}
std::pair<bool, Node> Valuation::entailmentCheck(theory::TheoryOfMode mode, TNode lit, const theory::EntailmentCheckParameters* params, theory::EntailmentCheckSideEffects* out) {
return d_engine->entailmentCheck(mode, lit, params, out);
}
bool Valuation::needCheck() const{
return d_engine->needCheck();
}
}/* CVC4::theory namespace */
}/* CVC4 namespace */
|
