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annotate anagram/guisupport/ruletabdc.h @ 18:562c313f14f4

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some minor updates for 2022
author David A. Holland
date Tue, 31 May 2022 02:03:50 -0400
parents 13d2b8934445
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1 /*
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2 * AnaGram, A System for Syntax Directed Programming
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3 * Copyright 1993-2002 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 * ruletabdc.h
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7 */
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8
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9 #ifndef RULETABDC_H
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10 #define RULETABDC_H
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11
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12 #include "conflicttrc.h"
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13 #include "dc.h"
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14 #include "q1glbl.h"
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15
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16 class rule_table_dc : public dc {
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17 public:
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18 static MenuOption *auxTable[];
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19 virtual MenuOption **getAuxWinMenu(void) { return auxTable; }
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20
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21 rule_table_dc(void);
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22 rule_table_dc(rule_stack_dc &x) : dc(x) {}
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23
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24 virtual void getLine(unsigned) const;
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25 virtual void synchCursor(unsigned) const;
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26 struct localize {
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27 unsigned rule;
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28 unsigned index;
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29 localize(unsigned);
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30 unsigned token() {
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31 unsigned nt = ibnfn[rule];
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32 if (index < nt) return ibnfs[ibnfb[rule] + index];
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33 return 0;
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34 }
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35
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36 };
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37 virtual dc_ref expansion_rules(unsigned);
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38 virtual dc_ref productions(unsigned);
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39 virtual dc_ref rule_context(unsigned);
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40 virtual dc_ref usage(unsigned);
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41
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42 virtual int expansion_rules_ok(unsigned);
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43 virtual int productions_ok(unsigned);
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44 virtual int rule_context_ok(unsigned ln) { return ln != 0; }
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45 virtual int usage_ok(unsigned);
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46 };
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47
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48
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49 #endif /* RULETABDC_H */