d3a8c94dfd
Committed on behalf of arthurhsu@chromium.org with a few final nits. Original CL: http://codereview.appspot.com/4627077 Review URL: http://codereview.appspot.com/4657070 git-svn-id: http://skia.googlecode.com/svn/trunk@1788 2bbb7eff-a529-9590-31e7-b0007b416f81
66 lines
1.7 KiB
C++
Executable File
66 lines
1.7 KiB
C++
Executable File
/*
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* Copyright (C) 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SkBitSet_DEFINED
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#define SkBitSet_DEFINED
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#include "SkTypes.h"
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class SkBitSet {
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public:
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/** NumberOfBits must be greater than zero.
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*/
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explicit SkBitSet(int numberOfBits);
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explicit SkBitSet(const SkBitSet& source);
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const SkBitSet& operator=(const SkBitSet& rhs);
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bool operator==(const SkBitSet& rhs);
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bool operator!=(const SkBitSet& rhs);
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/** Clear all data.
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*/
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void clearAll();
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/** Set the value of the index-th bit.
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*/
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void setBit(int index, bool value);
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/** Test if bit index is set.
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*/
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bool isBitSet(int index);
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/** Or bits from source. false is returned if this doesn't have the same
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* bit count as source.
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*/
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bool orBits(SkBitSet& source);
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private:
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SkAutoFree fBitData;
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// Dword (32-bit) count of the bitset.
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size_t fDwordCount;
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size_t fBitCount;
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uint32_t* internalGet(int index) {
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SkASSERT((size_t)index < fBitCount);
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size_t internalIndex = index / 32;
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SkASSERT(internalIndex < fDwordCount);
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return (uint32_t*)fBitData.get() + internalIndex;
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}
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};
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#endif
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