| 1 | /*
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| 2 | * AtomDescriptor.hpp
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| 3 | *
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| 4 | * Created on: Feb 5, 2010
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| 5 | * Author: crueger
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| 6 | */
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| 7 |
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| 8 | #ifndef ATOMDESCRIPTOR_HPP_
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| 9 | #define ATOMDESCRIPTOR_HPP_
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| 10 |
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| 11 |
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| 12 | #include <vector>
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| 13 | #include <map>
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| 14 | #include <boost/shared_ptr.hpp>
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| 15 | #include "World.hpp"
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| 16 |
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| 17 | class atom;
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| 18 |
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| 19 | class AtomDescriptor
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| 20 | {
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| 21 | public:
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| 22 |
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| 23 | typedef boost::shared_ptr<AtomDescriptor> desc_ptr;
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| 24 |
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| 25 | friend atom* World::getAtom(AtomDescriptor& descriptor);
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| 26 | friend std::vector<atom*> World::getAllAtoms(AtomDescriptor& descriptor);
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| 27 |
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| 28 | AtomDescriptor();
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| 29 | virtual ~AtomDescriptor();
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| 30 | AtomDescriptor(const AtomDescriptor&);
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| 31 |
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| 32 | virtual bool predicate(std::pair<int,atom*>)=0;
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| 33 | // clone is only used internally to generate operators
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| 34 | virtual desc_ptr clone() const=0;
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| 35 |
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| 36 | protected:
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| 37 | virtual atom* find();
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| 38 | virtual std::vector<atom*> findAll();
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| 39 | std::map<int,atom*>& getAtoms();
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| 40 | };
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| 41 |
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| 42 | class AtomAndDescriptor : public AtomDescriptor
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| 43 | {
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| 44 | friend AtomAndDescriptor operator&&(const AtomDescriptor &lhs, const AtomDescriptor &rhs);
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| 45 | public:
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| 46 | AtomAndDescriptor(const AtomAndDescriptor&);
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| 47 | ~AtomAndDescriptor();
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| 48 |
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| 49 | virtual desc_ptr clone() const;
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| 50 | virtual bool predicate(std::pair<int,atom*>);
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| 51 |
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| 52 | private:
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| 53 | desc_ptr lhs;
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| 54 | desc_ptr rhs;
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| 55 |
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| 56 | // private constructor to enforce construction through operators
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| 57 | AtomAndDescriptor(const AtomDescriptor &_lhs, const AtomDescriptor &_rhs);
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| 58 | };
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| 59 |
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| 60 | class AtomOrDescriptor : public AtomDescriptor
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| 61 | {
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| 62 | friend AtomOrDescriptor operator||(const AtomDescriptor &lhs, const AtomDescriptor &rhs);
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| 63 | public:
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| 64 | AtomOrDescriptor(const AtomOrDescriptor &);
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| 65 | ~AtomOrDescriptor();
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| 66 |
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| 67 | virtual desc_ptr clone() const;
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| 68 | virtual bool predicate(std::pair<int,atom*>);
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| 69 |
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| 70 | private:
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| 71 | desc_ptr lhs;
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| 72 | desc_ptr rhs;
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| 73 |
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| 74 | // private constructor to enforce construction through operators
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| 75 | AtomOrDescriptor(const AtomDescriptor &_lhs, const AtomDescriptor &_rhs);
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| 76 | };
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| 77 |
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| 78 | class AtomNotDescriptor : public AtomDescriptor
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| 79 | {
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| 80 | friend AtomNotDescriptor operator!(const AtomDescriptor &arg);
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| 81 | public:
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| 82 | AtomNotDescriptor(const AtomNotDescriptor &);
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| 83 | ~AtomNotDescriptor();
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| 84 |
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| 85 | virtual desc_ptr clone() const;
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| 86 | virtual bool predicate(std::pair<int,atom*>);
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| 87 |
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| 88 | private:
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| 89 | desc_ptr arg;
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| 90 |
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| 91 | // protected constructor to enforce construction through operators
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| 92 | AtomNotDescriptor(const AtomDescriptor &_arg);
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| 93 | };
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| 94 |
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| 95 | // no true short circuit, but the test of the second descriptor wont be done
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| 96 | AtomAndDescriptor operator&&(const AtomDescriptor &lhs, const AtomDescriptor &rhs);
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| 97 | AtomOrDescriptor operator||(const AtomDescriptor &lhs, const AtomDescriptor &rhs);
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| 98 | AtomNotDescriptor operator!(const AtomDescriptor &arg);
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| 99 |
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| 100 | #endif /* ATOMDESCRIPTOR_HPP_ */
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