зеркало из https://github.com/mozilla/gecko-dev.git
45 строки
1.2 KiB
C++
45 строки
1.2 KiB
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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/*
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* A compile-time constant-length array, with bounds-checking assertions -- but
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* unlike mozilla::Array, with indexes biased by a constant.
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*
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* Thus where mozilla::Array<int, 3> is a three-element array indexed by [0, 3),
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* mozilla::RangedArray<int, 8, 3> is a three-element array indexed by [8, 11).
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*/
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#ifndef mozilla_RangedArray_h
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#define mozilla_RangedArray_h
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#include "mozilla/Array.h"
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namespace mozilla {
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template<typename T, size_t MinIndex, size_t Length>
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class RangedArray
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{
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public:
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T& operator[](size_t aIndex)
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{
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MOZ_ASSERT(aIndex == MinIndex || aIndex > MinIndex);
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return mArr[aIndex - MinIndex];
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}
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const T& operator[](size_t aIndex) const
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{
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MOZ_ASSERT(aIndex == MinIndex || aIndex > MinIndex);
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return mArr[aIndex - MinIndex];
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}
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private:
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Array<T, Length> mArr;
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};
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} // namespace mozilla
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#endif // mozilla_RangedArray_h
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