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82 lines
2 KiB
C++
82 lines
2 KiB
C++
// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
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#ifndef __BIT_ARRAY_H__
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#define __BIT_ARRAY_H__
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/*
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* Copyright 2010 ZXing authors. All rights reserved.
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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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#include <zxing/ZXing.h>
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#include <zxing/common/Counted.h>
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#include <zxing/common/IllegalArgumentException.h>
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#include <zxing/common/Array.h>
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#include <vector>
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#include <limits>
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#include <iostream>
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namespace zxing {
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class BitArray : public Counted {
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public:
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static const int bitsPerWord = std::numeric_limits<unsigned int>::digits;
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private:
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int size;
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ArrayRef<int> bits;
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static const int logBits = ZX_LOG_DIGITS(bitsPerWord);
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static const int bitsMask = (1 << logBits) - 1;
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public:
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BitArray(int size);
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~BitArray();
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int getSize() const;
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bool get(int i) const {
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return (bits[i >> logBits] & (1 << (i & bitsMask))) != 0;
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}
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void set(int i) {
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bits[i >> logBits] |= 1 << (i & bitsMask);
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}
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int getNextSet(int from);
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int getNextUnset(int from);
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void setBulk(int i, int newBits);
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void setRange(int start, int end);
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void clear();
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bool isRange(int start, int end, bool value);
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std::vector<int>& getBitArray();
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void reverse();
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class Reverse {
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private:
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Ref<BitArray> array;
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public:
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Reverse(Ref<BitArray> array);
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~Reverse();
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};
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private:
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static int makeArraySize(int size);
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};
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std::ostream& operator << (std::ostream&, BitArray const&);
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}
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#endif // __BIT_ARRAY_H__
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