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annotate anagram/support/bitmap.h @ 6:607e3be6bad8

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Adjust to the moving target called the C++ standard. Apparently nowadays it's not allowed to define an explicit copy constructor but not an assignment operator. Consequently, defining the explicit copy constructor in terms of the implicit/automatic assignment operator for general convenience no longer works. Add assignment operators. Caution: not tested with the IBM compiler, but there's no particular reason it shouldn't work.
author David A. Holland
date Mon, 30 May 2022 23:46:22 -0400
parents 13d2b8934445
children
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1 /*
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2 * AnaGram, A System for Syntax Directed Programming
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3 * Copyright 1993-2000 Parsifal Software. All Rights Reserved.
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4 * See the file COPYING for license and usage terms.
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5 *
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6 * bitmap.h
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7 */
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8
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9 #ifndef BITMAP_H
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10 #define BITMAP_H
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11
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12 #include <string.h>
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13 #include "port.h"
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14
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15 #include "data.h" // sigh... XXX (for n_chars)
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16 #include "pointer.h"
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17
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18
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19 class Bitmap {
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20 protected:
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21 unsigned nChars;
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22 unsigned int nBits;
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23
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24 ArrayPointer<unsigned char> map;
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25
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26 public:
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27 Bitmap(int n) : nChars((n+7)/8), nBits(n), map(new unsigned char[nChars]) {
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28 memset(map, 0, nChars);
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29 }
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30 virtual ~Bitmap() {}
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31 virtual int setBit(int x);
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32 virtual int getBit(int x);
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33 virtual int list(int *x);
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34 virtual Bitmap &setRange(unsigned first, unsigned last);
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35 Bitmap &operator |= (const Bitmap &b);
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36 Bitmap &operator &= (const Bitmap &b);
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37 Bitmap &operator -= (const Bitmap &b);
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38 Bitmap &operator ~ ();
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39 };
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40
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41 class CharBitmap : public Bitmap {
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42 public:
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43 CharBitmap() : Bitmap(n_chars) {}
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44 CharBitmap(const Bitmap &b) : Bitmap(b) {}
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45 virtual int setBit(int x);
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46 virtual int getBit(int x);
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47 virtual int list(int *x);
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48 #ifdef _MSC_VER
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49 virtual Bitmap &setRange(unsigned first, unsigned last);
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50 #else
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51 virtual CharBitmap &setRange(unsigned first, unsigned last);
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52 #endif
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53 void blurCase();
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54 void blurCase(int);
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55 };
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56
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57
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58 #endif /* BITMAP_H */