qnum_space.hpp

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#pragma once
 
#include <uni20/symmetry/qnum.hpp>
#include <uni20/symmetry/space.hpp>
 
#include <stdexcept>
#include <string>
#include <utility>
 
namespace uni20
{
 
class QNumSpace {
  public:
    explicit QNumSpace(QNum qnum, std::string label = {}) : qnum_(qnum), label_(std::move(label))
    {
      if (!qnum_.valid())
      {
        throw std::invalid_argument("QNumSpace requires a valid quantum number");
      }
    }
 
    auto symmetry() const -> Symmetry { return qnum_.symmetry(); }
 
    auto qnum() const -> QNum const& { return qnum_; }
 
    auto label() const -> std::string const& { return label_; }
 
    void set_label(std::string label) { label_ = std::move(label); }
 
    auto operator==(QNumSpace const& other) const -> bool = default;
 
  private:
    QNum qnum_;
    std::string label_;
};
 
static_assert(SymmetrySpace<QNumSpace>);
 
} // namespace uni20