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
/*
* 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 SubformulaIterator.hpp
* Defines a class SubformulaIterator that iterates
* over subformulas in formula lists and formulas.
*
* @since 06/01/2004, Manchester
*/
#ifndef __SubformulaIterator__
#define __SubformulaIterator__
#include "Lib/VirtualIterator.hpp"
#include "Formula.hpp"
namespace Kernel {
/**
* Implements an iterator over subformulas of a formula or formula list.
*/
class SubformulaIterator
: public IteratorCore<Formula*>
{
public:
SubformulaIterator (Formula*);
SubformulaIterator (FormulaList*);
~SubformulaIterator () override;
bool hasNext () override;
Formula* next () override;
Formula* next (int& polarity);
private:
class Element;
Formula* _current;
int _currentPolarity;
Element* _reserve;
}; // class SubformulaIterator
}
#endif // __SubformulaIterator__