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56 lines
1.1 KiB
C++
56 lines
1.1 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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/* A compile-time constant-length array with bounds-checking assertions. */
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#ifndef mozilla_Array_h
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#define mozilla_Array_h
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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#include <stddef.h>
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namespace mozilla {
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template<typename T, size_t Length>
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class Array
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{
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T mArr[Length];
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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 < Length);
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return mArr[aIndex];
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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 < Length);
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return mArr[aIndex];
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}
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};
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template<typename T>
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class Array<T, 0>
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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_CRASH("indexing into zero-length array");
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}
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const T& operator[](size_t aIndex) const
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{
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MOZ_CRASH("indexing into zero-length array");
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}
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};
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} /* namespace mozilla */
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#endif /* mozilla_Array_h */
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