IndexSet.cpp

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#include <set>
 
#include "MantidKernel/Exception.h"
#include "MantidKernel/IndexSet.h"
 
using namespace Mantid;
using namespace Kernel;
 
IndexSet::IndexSet(size_t fullRange) : m_size(fullRange) {}
 
IndexSet::IndexSet(int64_t min, int64_t max, size_t fullRange) {
  if (min < 0 || min > max)
    throw Exception::IndexError(min, max, "IndexSet - min");
  if (max >= static_cast<int64_t>(fullRange))
    throw Exception::IndexError(max, fullRange - 1, "IndexSet - max");
 
  // Bounds checked, cast should be fine in all cases.
  m_min = static_cast<size_t>(min);
  m_size = static_cast<size_t>(max - min + 1);
}
 
IndexSet::IndexSet(const std::vector<size_t> &indices, size_t fullRange) : m_isRange(false) {
  // We use a set to create unique and ordered indices.
  std::set<size_t> index_set;
  for (const auto &index : indices) {
    if (index >= fullRange)
      throw Exception::IndexError(index, fullRange - 1, "IndexSet - index vector entry");
    index_set.insert(index);
  }
  m_indices = std::vector<size_t>(begin(index_set), end(index_set));
  m_size = m_indices.size();
}