common/print_elements.h

// Copyright 2021 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef QUICHE_COMMON_PRINT_ELEMENTS_H_
#define QUICHE_COMMON_PRINT_ELEMENTS_H_

#include <ostream>
#include <sstream>
#include <string>

#include "common/platform/api/quiche_export.h"

namespace quiche {

// Print elements of any iterable container that has cbegin() and cend() methods
// and the elements have operator<<(ostream) override.
template <typename T>
QUICHE_EXPORT_PRIVATE inline std::string PrintElements(const T& container) {
  std::stringstream debug_string;
  debug_string << "{";
  auto it = container.cbegin();
  if (it != container.cend()) {
    debug_string << *it;
    ++it;
    while (it != container.cend()) {
      debug_string << ", " << *it;
      ++it;
    }
  }
  debug_string << "}";
  return debug_string.str();
}

}  // namespace quiche

#endif  // QUICHE_COMMON_PRINT_ELEMENTS_H_