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////////////////////////////////////////////////////////////////////////////////
//
// PermutationPartialComparator.hh
//
// produced: 15/03/2020 jr
//
////////////////////////////////////////////////////////////////////////////////
#ifndef PERMUTATIONPARTIALCOMPARATOR_HH
#define PERMUTATIONPARTIALCOMPARATOR_HH
#include "Permutation.hh"
namespace topcom {
class PermutationPartialComparator {
protected:
const Permutation* _permptr;
parameter_type _min;
parameter_type _max;
public:
// constructors:
inline PermutationPartialComparator();
inline PermutationPartialComparator(const PermutationPartialComparator&);
inline PermutationPartialComparator(const Permutation&, const parameter_type, const parameter_type);
// destructor:
inline ~PermutationPartialComparator();
// assignment:
inline PermutationPartialComparator& operator=(const PermutationPartialComparator&);
// accessors:
inline const parameter_type min() const;
inline const parameter_type max() const;
// comparison:
inline const bool operator==(const PermutationPartialComparator&) const;
inline const bool operator!=(const PermutationPartialComparator&) const;
// keys for containers:
inline const size_type keysize() const;
inline const size_type key(const size_type n) const;
// stream output/input:
inline std::ostream& write(std::ostream& ost) const;
inline std::istream& read(std::istream& ist);
inline friend std::ostream& operator<<(std::ostream& ost, const PermutationPartialComparator& p);
inline friend std::istream& operator>>(std::istream& ist, PermutationPartialComparator& p);
};
// // specialization of Hash (for debugging):
// template<>
// class Hash<PermutationPartialComparator> {
// public:
// inline size_type operator()(const PermutationPartialComparator& key) const {
// size_type result(0UL);
// size_type factor(1UL);
// const size_type keysize = key.keysize();
// for (size_type i = 0; i < keysize; ++i) {
// result = (result << 5UL) - result;
// #ifdef HASH_DEBUG
// if (key.min() > 63) {
// MessageStreams::debug() << "result after shift = " << result << std::endl;
// }
// #endif
// result += key.key(i);
// #ifdef HASH_DEBUG
// if (key.min() > 63) {
// MessageStreams::debug() << "result after add = " << result << std::endl;
// }
// #endif
// }
// return result;
// }
// };
// constructors:
inline PermutationPartialComparator::PermutationPartialComparator() : _permptr(0), _min(0), _max(-1) {}
inline PermutationPartialComparator::PermutationPartialComparator(const PermutationPartialComparator& ppc) :
_permptr(ppc._permptr), _min(ppc._min), _max(ppc._max) {}
inline PermutationPartialComparator::PermutationPartialComparator(const Permutation& perm, const parameter_type min, const parameter_type max) :
_permptr(&perm), _min(min), _max(max) {}
// destructor:
inline PermutationPartialComparator::~PermutationPartialComparator() {}
// assignment:
inline PermutationPartialComparator& PermutationPartialComparator::operator=(const PermutationPartialComparator& ppc) {
if (&ppc == this) {
return *this;
}
_permptr = ppc._permptr;
_min = ppc._min;
_max = ppc._max;
return *this;
}
// accessors:
inline const parameter_type PermutationPartialComparator::min() const {
return _min;
}
inline const parameter_type PermutationPartialComparator::max() const {
return _max;
}
// comparison:
inline const bool PermutationPartialComparator::operator==(const PermutationPartialComparator& ppc) const {
if ((_max != ppc._max) || (_min != ppc._min)) {
return false;
}
for (parameter_type i = _min; i <= _max; ++i) {
const parameter_type p1 = (*_permptr)[i];
const parameter_type p2 = (*(ppc._permptr))[i];
if (p1 == p2) {
continue;
}
else if ((p1 < _min) && (p2 < _min)) {
continue;
}
else if ((p1 > _max) && (p2 > _max)) {
continue;
}
else {
return false;
}
}
return true;
}
inline const bool PermutationPartialComparator::operator!=(const PermutationPartialComparator& ppc) const {
return !operator==(ppc);
}
// keys for containers:
inline const size_type PermutationPartialComparator::keysize() const {
#ifdef HASH_DEBUG
if (_min > 63) {
MessageStreams::debug() << "Permutation:keysize() was called - return value = " << _max - _min + 1 << std::endl;
}
#endif
return (size_type)(_max - _min + 1);
}
inline const size_type PermutationPartialComparator::key(const size_type n) const {
const parameter_type value = (*_permptr)[(parameter_type)n + _min];
if (value < _min) {
#ifdef HASH_DEBUG
if (_min > 63) {
MessageStreams::debug() << "Permutation:key(" << n << ") was called - return value = "
<< 0 << std::endl;
}
#endif
return (size_type)0;
}
else if (value > _max) {
#ifdef HASH_DEBUG
if (_min > 63) {
MessageStreams::debug() << "Permutation:key(" << n << ") was called - return value = "
<< _permptr->n() - 1 << std::endl;
}
#endif
return (size_type)(_permptr->n() - 1);
}
else {
#ifdef HASH_DEBUG
if (_min > 63) {
MessageStreams::debug() << "Permutation:key(" << n << ") was called - return value = "
<< value << std::endl;
}
#endif
return (size_type)value;
}
}
// stream output/input:
inline std::ostream& PermutationPartialComparator::write(std::ostream& ost) const {
ost << "[" << _min << "=>" << *_permptr << "<=" << _max << "]";
return ost;
}
inline std::istream& PermutationPartialComparator::read(std::istream& ist) {
MessageStreams::forced() << "PermutationPartialComparator::read(std::istream& ist): reading unsupported - exiting" << std::endl;
exit(1);
}
inline std::ostream& operator<<(std::ostream& ost, const PermutationPartialComparator& p) {
return p.write(ost);
}
inline std::istream& operator>>(std::istream& ist, PermutationPartialComparator& p) {
return p.read(ist);
}
}; // namespace topcom
#endif
// eof PermutationPartialComparator.hh
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