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
/*
* This file is part of the source code of the software program
* Vampire. It is protected by applicable
* copyright laws.
*
* This source code is distributed under the licence found here
* https://vprover.github.io/license.html
* and in the source directory
*/
/**
* @file AnswerLiteralProcessors.hpp
* Defines classes for removing clauses with invalid answer literals.
*/
#ifndef __AnswerLiteralProcessors__
#define __AnswerLiteralProcessors__
#include "Forwards.hpp"
#include "InferenceEngine.hpp"
namespace Inferences {
/*
* Removes clauses containing answer literals with uncomputable symbols,
* as synthesized programs cannot include such symbols.
*/
class UncomputableAnswerLiteralRemoval
: public ImmediateSimplificationEngine
{
public:
Clause* simplify(Clause* cl) override;
};
/*
* Removes clauses containing multiple answer literals,
* which is not allowed in program synthesis.
*/
class MultipleAnswerLiteralRemoval
: public ImmediateSimplificationEngine
{
public:
Clause* simplify(Clause* cl) override;
};
/*
* Removes clauses containing answer literals that
* the user specified should be avoided.
*/
class UndesiredAnswerLiteralRemoval
: public ImmediateSimplificationEngine
{
public:
UndesiredAnswerLiteralRemoval(const std::string& avoidThese);
Clause* simplify(Clause* cl) override;
private:
Clause* _avoiders;
};
class SynthesisAnswerLiteralProcessor
: public ImmediateSimplificationEngineMany
{
public:
Option<ClauseIterator> simplifyMany(Clause* cl) override;
};
}
#endif // __AnswerLiteralProcessors__