itkPrintHelper.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
 
#ifndef itkPrintHelper_h
#define itkPrintHelper_h
 
#include <iostream>
#include <iterator>
 
// Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112467
#if defined(ITK_WRAPPING_PARSER) && defined(__GNUC__) && !defined(__clang__)
#  define __clang__
#  define ITK_CASTXML_GCC_VECTOR_WORKAROUND
#endif
#include <vector>
#if defined(ITK_CASTXML_GCC_VECTOR_WORKAROUND)
#  undef __clang__
#  undef ITK_CASTXML_GCC_VECTOR_WORKAROUND
#endif
 
namespace itk
{
 
namespace print_helper
{
 
template <typename T>
std::ostream &
operator<<(std::ostream & os, const std::vector<T> & v)
{
  if (v.empty())
  {
    return os << "()";
  }
 
  os << '(';
  std::copy(v.begin(), v.end() - 1, std::ostream_iterator<T>(os, ", "));
  return os << v.back() << ')';
}
 
} // end namespace print_helper
} // end namespace itk
 
#endif // itkPrintHelper_h