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annotate anagram/guisupport/ruletabdc.cpp @ 17:12171da8943f

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author David A. Holland
date Tue, 31 May 2022 01:56:37 -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.cpp
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7 */
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8
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9 #include "dc.h"
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10 #include "items.h"
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11 #include "q1a.h"
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12 #include "q1glbl.h"
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13 #include "ruletabdc.h"
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14 #include "stacks.h"
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15 #include "token.h"
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16 #include "ut.h"
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17 #include "wm1.h"
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18 #include "ws.h"
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19
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20 //#define INCLUDE_LOGGING
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21 #include "log.h"
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22
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23
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24 rule_table_dc::localize::localize(unsigned ln) {
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25 LOGSECTION("rule_table_dc::localize::localize");
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26 int rn = 1;
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27 unsigned nc = ibnfn[1] + 1;
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28 int lc = 0;
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29
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30 while (nc <= ln) {
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31 lc = nc;
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32 nc += ibnfn[++rn] + 1;
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33 }
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34 rule = rn;
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35 index = ln-lc;
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36 LOGV(ln) LCV(rule) LCV(index) LCV(lc) LCV(nc);
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37 }
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38
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39 int rule_table_dc::expansion_rules_ok(unsigned ln) {
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40 localize x(ln);
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41 return build_item_list_ok(x.token());
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42 }
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43
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44 dc_ref rule_table_dc::expansion_rules(unsigned ln) {
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45 localize x(ln);
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46 return build_item_list(x.token());
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47 }
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48
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49
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50 int rule_table_dc::productions_ok(unsigned ln) {
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51 localize x(ln);
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52 return productions_window_ok(x.token());
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53 }
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54
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55 dc_ref rule_table_dc::productions(unsigned ln) {
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56 localize x(ln);
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57 return productions_window(x.token());
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58 }
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59
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60 int rule_table_dc::usage_ok(unsigned ln) {
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61 localize x(ln);
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62 return token_usage_window_ok(x.token());
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63 }
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64
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65 dc_ref rule_table_dc::usage(unsigned ln) {
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66 localize x(ln);
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67 return token_usage_window(x.token());
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68 }
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69
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70 dc_ref rule_table_dc::rule_context(unsigned ln) {
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71 localize x(ln);
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72 return rule_context_window(x.rule);
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73 }
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74
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75
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76 static int rule_table_tabs[] = {7,0};
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77
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78 void rule_table_dc::getLine(unsigned ln) const {
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79 LOGSECTION("rule_table_dc::getLine");
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80 localize x(ln);
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81 unsigned nt = ibnfn[x.rule];
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82 LOGV(ln) LCV(nt);
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83 if (x.index < nt) {
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84 int tn = ibnfs[ibnfb[x.rule] + x.index];
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85 ssprintf("T%03d:\t", tn);
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86 atkn(tn);
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87 return;
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88 }
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89 sss("\t -> ");
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90 append_item(x.rule, -1);
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91 }
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92
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93 void rule_table_dc::synchCursor(unsigned ln) const {
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94 LOGSECTION("rule_table_dc::synchCursor");
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95 LOGV(ln);
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96 localize x(ln);
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97 if (x.rule) {
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98 set_rule_line(x.rule);
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99 }
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100 }
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101
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102 rule_table_dc::rule_table_dc(void)
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103 : dc("Rule Table")
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104 {
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105 int lc = 0;
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106 unsigned fn = 0;
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107
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108 tab_stops = rule_table_tabs;
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109 columnHeadTitle = "Token\tProduction";
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110 while (fn++ < nforms) {
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111 lc += ibnfn[fn] + 1;
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112 }
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113 des->d_size.y = lc;
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114 des->d_size.x = rule_table_tabs[1] + item_length;
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115 }
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116