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1 #ifndef boof_h_
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2 #define boof_h_
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3
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4 /* A boolpit is an infinite array of bools (growable at both ends) */
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5 /* boof.h - by Sam Hughes - boof@samuelhughes.com */
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6
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7 #include <string>
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8 #include <iostream>
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9 #include <vector>
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10
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11 class boolpit {
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12
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13 unsigned char * beg_;
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14 unsigned char * mid_;
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15 unsigned char * end_;
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16
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17 public:
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18
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19 boolpit();
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20 boolpit(const boolpit & copyee);
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21 ~boolpit();
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22
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23 boolpit & operator=(const boolpit & assignee);
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24
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25 void set(size_t offset, int i);
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26 int get(size_t offset);
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27 void flip(size_t offset);
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28
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29 private:
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30 void copy(const boolpit & copyee);
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31 void grow_and_accommodate(unsigned char * & p);
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32
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33
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34 };
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35
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36 class boofer {
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37 struct size_triad {
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38 size_t lpos, rjump, bjump;
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39 size_triad(size_t a, size_t b, size_t c)
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40 : lpos(a), rjump(b), bjump(c) {}
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41 };
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42
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43 std::string prog_;
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44 std::vector<size_triad> brace_pos_;
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45
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46 public:
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47 boofer(std::istream & istr);
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48 void execute(std::istream & in, std::ostream & out) const;
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49
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50
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51
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52 };
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53
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54
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55 #endif
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