annotate oldclasslib/include/strdict.h @ 24:a4899cdfc2d6 default tip

Obfuscate the regexps to strip off the IBM compiler's copyright banners. I don't want bots scanning github to think they're real copyright notices because that could cause real problems.
author David A. Holland
date Mon, 13 Jun 2022 00:40:23 -0400
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1 /*
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2 * AnaGram, a System for Syntax Directed Programmng
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3 * String Dictionary Class Definition
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4 *
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5 * Copyright 1993 Parsifal Software. All Rights Reserved.
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6 *
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7 * This software is provided 'as-is', without any express or implied
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8 * warranty. In no event will the authors be held liable for any damages
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9 * arising from the use of this software.
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10 *
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11 * Permission is granted to anyone to use this software for any purpose,
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12 * including commercial applications, and to alter it and redistribute it
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13 * freely, subject to the following restrictions:
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14 *
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15 * 1. The origin of this software must not be misrepresented; you must not
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16 * claim that you wrote the original software. If you use this software
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17 * in a product, an acknowledgment in the product documentation would be
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18 * appreciated but is not required.
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19 * 2. Altered source versions must be plainly marked as such, and must not be
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20 * misrepresented as being the original software.
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21 * 3. This notice may not be removed or altered from any source distribution.
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22 */
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23
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24 #ifndef STRDICT_H
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25 #define STRDICT_H
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26
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27 class string_dictionary {
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28 unsigned *sxs; // Storage for string indices
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29 char *cs; // Storage for character strings
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30 unsigned csx; // Next available location in cs
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31 unsigned csxmax; // Size of cs
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32 unsigned ns; // Number of strings in dictionary
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33 unsigned nsmax; // Max number of strings
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34 unsigned *ht; // Hash table storage
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35 unsigned htl; // Size of hash table
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36 unsigned htmask; // Hash table mask
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37 unsigned hash(const char *); // Hash function
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38 unsigned n_calls; // Number of calls
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39 unsigned n_collisions; // Number of collisions
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40 int copy_flag; // Is it live or is it memorex?
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41 public:
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42
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43
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44 // Constructors
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45
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46 string_dictionary(unsigned size, unsigned word_length = 10);
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47
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48 string_dictionary(const string_dictionary &);
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49
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50 void operator = (const string_dictionary &);
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51
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52 // Destructor
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53
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54 ~string_dictionary();
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55
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56
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57 // Reset String Dictionary
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58
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59 friend string_dictionary &reset(string_dictionary &);
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60
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61
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62 // Enter a String in Dictionary
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63
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64 unsigned operator << (const char *); // Insert string
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65
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66
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67 // Look up a String in Dictionary
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68
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69 unsigned operator [] (const char *); // Look up string
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70
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71
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72 // Recover String from Dictionary Index
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73
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74 char * operator [] (unsigned); // Find string
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75
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76
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77 // Find Number of Entries in Dictionary
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78
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79 friend unsigned size(string_dictionary &);
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80 };
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81
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82 #endif