mfbt/IteratorTraits.h
author Masayuki Nakano <masayuki@d-toybox.com>
Wed, 17 Jun 2015 10:03:58 +0900
changeset 249246 5e35c779d79193d52fd20d5d73b7ff9a05642ae4
parent 227319 56219858c1e152b795d42b7ca8620eb2e1284d44
permissions -rw-r--r--
Bug 1171814 ContentCache should store first character rect because Yosemite's Japanese IME sometimes tries to query it r=m_kato

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* Iterator traits to expose a value type and a difference type */

#ifndef mozilla_IteratorTraits_h
#define mozilla_IteratorTraits_h

#include <stddef.h>

namespace mozilla {

template<typename Iterator>
struct IteratorTraits
{
  typedef typename Iterator::ValueType ValueType;
  typedef typename Iterator::DifferenceType DifferenceType;
};

template<typename T>
struct IteratorTraits<T*>
{
  typedef T ValueType;
  typedef ptrdiff_t DifferenceType;
};

template<typename T>
struct IteratorTraits<const T*>
{
  typedef const T ValueType;
  typedef ptrdiff_t DifferenceType;
};

} // namespace mozilla

#endif // mozilla_IteratorTraits_h