forked from mirrors/gecko-dev
692d8936cd
These set or clear every bit, taking care not to set trailing unused bits at the end of storage. Differential Revision: https://phabricator.services.mozilla.com/D101775
68 lines
2.1 KiB
C++
68 lines
2.1 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/BitSet.h"
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using mozilla::BitSet;
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// Work around issue with commas in macro use.
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template <size_t N>
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using BitSetUint8 = BitSet<N, uint8_t>;
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template <size_t N>
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using BitSetUint32 = BitSet<N, uint32_t>;
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void TestBitSet() {
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MOZ_RELEASE_ASSERT(BitSetUint8<1>().Storage().LengthBytes() == 1);
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MOZ_RELEASE_ASSERT(BitSetUint32<1>().Storage().LengthBytes() == 4);
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MOZ_RELEASE_ASSERT(BitSetUint8<1>().Storage().Length() == 1);
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MOZ_RELEASE_ASSERT(BitSetUint8<8>().Storage().Length() == 1);
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MOZ_RELEASE_ASSERT(BitSetUint8<9>().Storage().Length() == 2);
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MOZ_RELEASE_ASSERT(BitSetUint32<1>().Storage().Length() == 1);
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MOZ_RELEASE_ASSERT(BitSetUint32<32>().Storage().Length() == 1);
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MOZ_RELEASE_ASSERT(BitSetUint32<33>().Storage().Length() == 2);
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BitSetUint8<10> bitset;
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MOZ_RELEASE_ASSERT(!bitset.Test(3));
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MOZ_RELEASE_ASSERT(!bitset[3]);
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bitset[3] = true;
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MOZ_RELEASE_ASSERT(bitset.Test(3));
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MOZ_RELEASE_ASSERT(bitset[3]);
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bitset.ResetAll();
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for (size_t i = 0; i < bitset.Size(); i++) {
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MOZ_RELEASE_ASSERT(!bitset[i]);
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}
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bitset.SetAll();
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for (size_t i = 0; i < bitset.Size(); i++) {
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MOZ_RELEASE_ASSERT(bitset[i]);
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}
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bitset.ResetAll();
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for (size_t i = 0; i < bitset.Size(); i++) {
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MOZ_RELEASE_ASSERT(!bitset[i]);
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}
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// Test trailing unused bits are not set by SetAll().
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bitset.SetAll();
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BitSetUint8<16> bitset2(bitset.Storage());
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MOZ_RELEASE_ASSERT(bitset.Size() < bitset2.Size());
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MOZ_RELEASE_ASSERT(bitset.Storage().Length() == bitset2.Storage().Length());
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for (size_t i = 0; i < bitset.Size(); i++) {
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MOZ_RELEASE_ASSERT(bitset2[i]);
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}
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for (size_t i = bitset.Size(); i < bitset2.Size(); i++) {
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MOZ_RELEASE_ASSERT(!bitset2[i]);
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}
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}
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int main() {
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TestBitSet();
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return 0;
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}
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