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40 lines
965 B
C++
40 lines
965 B
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Iterator traits to expose a value type and a difference type */
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#ifndef mozilla_IteratorTraits_h
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#define mozilla_IteratorTraits_h
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#include <stddef.h>
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namespace mozilla {
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template<typename Iterator>
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struct IteratorTraits
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{
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typedef typename Iterator::ValueType ValueType;
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typedef typename Iterator::DifferenceType DifferenceType;
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};
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template<typename T>
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struct IteratorTraits<T*>
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{
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typedef T ValueType;
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typedef ptrdiff_t DifferenceType;
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};
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template<typename T>
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struct IteratorTraits<const T*>
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{
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typedef const T ValueType;
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typedef ptrdiff_t DifferenceType;
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};
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} // namespace mozilla
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#endif // mozilla_IteratorTraits_h
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