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annotate anagram/agcore/rpz.cpp @ 17:12171da8943f

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author David A. Holland
date Tue, 31 May 2022 01:56:37 -0400
parents 607e3be6bad8
children
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1 /*
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2 * AnaGram, A System for Syntax Directed Programming
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3 * Copyright 1993-2002 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 * rpz.cpp
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7 */
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8
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9 #include "arrays.h"
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10 #include "assert.h"
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11 #include "bpe3.h"
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12 #include "config.h"
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13 #include "csexp.h"
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14 #include "dict.h"
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15 #include "error.h"
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16 #include "keyword.h"
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17 #include "myalloc.h"
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18 #include "pgg24-defs.h"
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19 #include "pgg24.h"
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20 #include "q1glbl.h"
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21 #include "rpk.h"
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22 #include "rpz.h"
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23 #include "rproc.h"
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24 #include "rule.h"
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25 #include "symbol.h"
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26 #include "stacks.h"
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27 #include "token.h"
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28 #include "tree.h"
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29 #include "tsd.h"
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30 #include "ut.h"
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31
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32 //#define INCLUDE_LOGGING
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33 #include "log.h"
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34
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35
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36 #define PCB pgcb
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37
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38
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39 void definition_1(CharSetExpression *x) {
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40 LOGSECTION("definition_1");
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41 int k;
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42 Symbol id = Symbol::create();
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43 LOGV(id);
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44 if (x->recursive(id)) {
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45 LOGS("Recursive definition");
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46 warning_here("Recursive definition of character set %s",
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47 id->string.pointer());
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48 delete x;
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49 return;
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50 }
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51 if (id->parse_tree.isNotNull()) {
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52 warning_here("Redefinition of %s", id->string.pointer());
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53 delete x;
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54 return;
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55 }
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56 if ((k = id->token_number) != 0) {
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57 if (Token(k)->non_terminal_flag) {
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58 warning_here("Redefinition of token T%03d: %s", k, id->string.pointer());
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59 delete x;
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60 return;
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61 }
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62 }
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63 LOGS("Ready to identify parse tree");
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64 ParseTree tree(x);
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65 LOGV((int) tree) LCV((int) tree->expression);
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66 id->parse_tree = tree;
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67 tree->token_name = id;
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68 }
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69
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70
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71 void definition_3(int cn) {
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72 LOGSECTION("definition_3");
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73 definition_1(new IndividualCode(cn));
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74 }
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75
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76 void definition_2(int tn) {
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77 LOGSECTION("definition_2");
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78 LOGV(tn);
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79 int t;
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80 token_number_map *mtn;
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81 unsigned name;
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82
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83 Symbol id = Symbol::create();
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84 LOGV(id);
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85 if (id->parse_tree.isNotNull()) {
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86 warning_here("Redefinition of %s", id->string.pointer());
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87 return;
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88 }
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89 if ((t = id->token_number) != 0) {
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90 mtn = &map_token_number[t];
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91 if (mtn->non_terminal_flag || mtn->key) {
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92 warning_here("Redefinition of token T%03d: %s",t, id->string.pointer());
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93 return;
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94 }
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95 shell_production(t,tn);
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96 return;
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97 }
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98 name = map_token_number[tn].token_name;
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99 if (name == (unsigned) id) {
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100 return;
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101 }
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102 if (name) {
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103 LOGS("call shell_production") LV(t) LCV(tn);
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104 shell_production(t,tn);
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105 return;
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106 }
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107 map_token_number[tn].token_name = id;
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108 id->token_number = tn;
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109 LOGV(tn) LCV(id);
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110 }
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111
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112 int form_spec_2(int fn, int pn) {
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113 LOGSECTION("form_spec_2");
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114 LOGV(fn) LCV(pn);
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115 Procedure reductionProc(pn);
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116 Rule rule(fn);
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117
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118 rule->proc_name = pn;
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119 LOGV(rule) LCV(rule->proc_name);
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120 reductionProc->form_number = rule;
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121 return fn;
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122 }
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123
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124 int head_list_2(int flag) {
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125 LOGSECTION("head_list_2");
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126 unsigned tn;
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127 token_name();
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128 tn = fis();
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129 LOGV(tn) LCV(ntkns);
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130 assert(tn <= ntkns);
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131 if (flag) {
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132 if (grammar_token) {
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133 log_error("Redefinition of grammar token");
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134 }
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135 grammar_token = tn;
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136 }
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137 return tn;
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138 }
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139
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140 int mid_line(int pn) {
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141 LOGSECTION("mid_line");
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142 Rule rule = form1();
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143 Procedure proc(pn);
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144 LOGV(rule);
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145 LOGV(ruleElementStack.size());
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146 int bias = ruleElementStack.top().size();
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147 LOGV(bias);
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148 rule->immediate_proc = 1;
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149 rule->proc_name = pn;
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150 proc->form_number = rule;
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151 LOGV(rule) LCV(rule->proc_name);
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152 rule->hostElementList = AgArray<RuleElement>(ruleElementStack.top());
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153 rule->op_bias = bias;
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154 return rule;
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155 }
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156
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157 int proc_spec_4(int flag) {
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158 LOGSECTION("proc_spec_4");
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159
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160 CSegment cSegment = cSegmentStack.pop();
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161 Procedure proc(cSegment);
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162 LOGV(proc);
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163 proc->value_flag = flag;
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164 proc->line = PRULE_CONTEXT(PCB)->y;
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165 proc->col = PRULE_CONTEXT(PCB)->x;
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166 return proc;
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167 }
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168
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169 static int proc_spec_6(int, int fn) {
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170 LOGSECTION("proc_spec_6");
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171
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172 CSegment segment;
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173 segment.end = segment.begin;
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174 Procedure proc(segment);
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175 proc->value_flag = 1;
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176 proc->form_number = fn;
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177 return proc;
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178 }
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179
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180
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181 int semantic_productions = 0;
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182
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183
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184 void production(int type) {
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185 LOGSECTION("production");
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186 unsigned *fl, *tl, nf, nt,i,j, zl;
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187
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188 zl = 0;
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189 fl = (unsigned *) build_list();
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190 nf = fis();
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191 tl = (unsigned *) build_list();
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192 ok_ptr(tl);
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193 LOGV((int) tl);
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194 nt = fis();
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195 LOGV(nt) LCV(nf);
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196 if (nt > 1) {
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197 semantic_productions = 1;
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198 }
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199 for (j = 0; j < nf; j++) {
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200 ok_ptr(tl);
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201 LOGV(fl[j]);
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202 Rule rule(fl[j]);
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203 //int pn = rule->proc_name;
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204 //const unsigned *rp = rule->tokens();
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205 int rl = rule->length(), i = rl;
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206
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207 ok_ptr(tl);
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208 LOGV(fl[j]);
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209 iws();
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210 int tokenIndex = 0;
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211 //while (i--) aws(*rp++);
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212 while (i--) {
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213 aws(rule.token(tokenIndex++));
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214 }
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215 i = nt;
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216 rl++;
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217 while (i--) {
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218 aws(tl[i]);
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219 if (list_in_dict(list_base, rl, prod_dict)) {
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220 log_error("Duplicate production");
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221 }
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222 fws();
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223 }
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224 rws();
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225 //check_size(map_proc_name,pn, pn + pn/2);
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226 rule->prim_tkn = tl[0];
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227 rule->fast_loop = nt == 1 &&
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228 rule->length() == 2 &&
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229 tl[0] == (unsigned) rule.token(0);
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230 //tl[0] == lstptr(*mfn,tokens)[0];
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231 if (rule->length() == 0) zl = 1;
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232 if (rule-> length() == 1) {
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233 int i = nt;
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234 unsigned t = rule.token(0);
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235 while (i--) {
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236 if (t != tl[i]) {
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237 continue;
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238 }
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239 warning_here("Suspicious production for %s",
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240 Token(t)->token_name->string.pointer());
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241 }
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242 }
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243 if (nt > 1) {
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244 rule->not_unique_reduction = 1;
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245 if (rule->proc_name == 0) {
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246 rule->proc_name = proc_spec_6(rule->line, fl[j]);
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247 }
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248 }
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249 }
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250 for (i = 0; i < nt; i++) {
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251 token_number_map *tp = &map_token_number[tl[i]];
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252 int vt = tp->value_type;
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253 ok_ptr(tl);
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254 LOGV((int) tl);
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255 LOGV(tl[i]) LCV(vt);
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256 if (nf) {
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257 tp->non_terminal_flag = 1;
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258 }
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259 tp->zero_length_flag = zl;
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260 tp->sem_det_flag = nt > 1;
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261 if (type && vt && vt != type) {
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262 ssprintf("Type Redefinition of T%03d: ", tl[i]);
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263 atkn(tl[i]);
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264 log_error();
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265 }
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266 if (type) {
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267 tp->value_type = type;
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268 }
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269 ok_ptr(tl);
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270 LOGV(type);
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271 for (j = 0; j < nf; j++) {
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272 at(bnf_table, tl[i], fl[j]);
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273 }
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274 }
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275 LOGS("Ready to free tl");
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276 ok_ptr(tl);
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277 LOGV((int) tl);
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278 DEALLOCATE(tl);
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279 LOGS("Ready to free fl");
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280 if (fl != NULL) {
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281 DEALLOCATE(fl);
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282 }
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283 LOGS("Production analysis complete");
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284 }
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285
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286 CharSetExpression *ss2(void) {
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287 LOGSECTION("ss2");
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288 Symbol name = Symbol::create();
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289
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290 LOGV(name->token_number) LCV(name->string);
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291 if (name->string == "error") {
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292 Token token = name->token_number;
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293 LOGV(token);
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294 if (error_token || token.isNotNull() || name->parse_tree.isNotNull()) {
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295 return new NamedCharSet(name);
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296 }
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297 token = Token::create();
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298 token->token_name = name;
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299 name->token_number = token;
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300 token->value_type = default_input_type;
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301 error_token = token;
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302 LOGV(error_token);
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303 checkParams();
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304 }
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305 return new NamedCharSet(name);
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306 }
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307
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308 void token_name(void) {
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309 LOGSECTION("token_name");
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310
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311 unsigned symbolCount = Symbol::count();
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312 Symbol n = Symbol::create();
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313 int flag = Symbol::count() > symbolCount; //true if new symbol
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314
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315 LOGV(n) LCV(ntkns);
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316 Token tn = n->token_number;
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317 LOGV(tn) LCV(ntkns);
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318 if (tn.isNotNull()) {
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319 sis(tn);
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320 return;
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321 }
6
607e3be6bad8 Adjust to the moving target called the C++ standard.
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322 n->token_number = Token::create();
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323 tn = n->token_number;
0
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324 tn->token_name = n;
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325 tn->value_type = 0;
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326 if (!flag && n->parse_tree.isNotNull()) {
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327 n->parse_tree = ParseTree();
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328 warning_here("Redefinition of %s", n->string.pointer());
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329 }
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330 sis(tn); /* push token on stack */
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331 return;
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332 }
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333
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334 //int idsx(string_dict *);
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335
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336 /* -> keyword string =vp_s(); */
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337
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338 int vp_s(void) {
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339 LOGSECTION("vp_s");
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340 int n;
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341 int i;
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342
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343 n = tis();
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344 if (n > max_key_length) max_key_length = n;
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345 tss();
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346 LOGV(string_base);
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347 if (!case_sensitive) {
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348 for (i = n; i--; ) {
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349 string_base[i] = agToUpper(string_base[i]);
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350 }
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351 }
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352 if (n == 0) {
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353 log_error("Empty keyword string");
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354 }
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355 Keyword keyword(string_base);
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356 LOGV(keyword->string);
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357 rcs();
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358 LOGV((int) keyword->token_number);
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359 if (keyword->token_number.isNull()) {
6
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360 keyword->token_number = Token::create();
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361 Token token = keyword->token_number;
0
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362 LOGV((int) token);
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363 token->key = keyword;
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364 token->value_type = void_token_type;
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365 token->operatorCandidate = 1;
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366 }
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367 return keyword->token_number;
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368 /*
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369 if (!idsx(key_dict)) {
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370 key = fis();
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371 assert(key == (int) keyword);
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372 LOGV(key) LCV(keyword);
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373 check_size(map_key_word, key, key + key/2);
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374 LOGV(key) LCV(map_key_word[key].token_number) LCV(ntkns);
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375 return map_key_word[key].token_number;
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376 }
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377 if (n > max_key_length) {
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378 max_key_length = n;
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379 }
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380 key = fis();
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381 LOGV(key) LCV(keyword);
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382 assert(key == (int) keyword);
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383 check_size(map_key_word, key,key + key/2 );
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384 map_key_word[key].token_number = Token::create();
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385 map_token_number[ntkns].key = key;
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386 LOGV(key) LCV(map_key_word[key].token_number) LCV(ntkns);
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387 return ntkns;
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388 */
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389 }
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390
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391 /* -> left bracket, proper vp rule specs, right bracket =vp_3(); */
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392
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393 int vp_3(void) {
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394 LOGSECTION("vp_3");
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395 int tn;
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396 int flag,vptn;
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397
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398 aws(3);
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399 flag = idl(vp_prod_dict);
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400 vptn = fis();
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401 check_size(map_vp_prod_number,vptn,vptn + vptn/2);
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402 if (flag == 0) {
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403 tn = map_vp_prod_number[vptn].token_number;
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404 LOGV(tn) LCV(ntkns);
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405 return tn;
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406 }
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407 sws(form1());
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408 fdl(vp_prod_dict,vptn);
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409 fws();
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410 vp_forms();
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411 concat_list();
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412 map_vp_prod_number[vptn].token_number = Token::create();
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413 gen_vp_prods(ntkns,1,vptn);
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414 LOGV(ntkns);
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415 return ntkns;
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416 }
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417
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418 /*
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419 -> keyword string, '?', blank?... =vp_5(vp_s());
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420 -> union:n, '?', blank?... =vp_5(form_element_1(n));
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421 */
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422
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423 int vp_5(int tn) {
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424 LOGSECTION("vp_5");
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425 int flag, vptn;
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426
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427 sws(tn); aws(5);
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428 flag = idl(vp_prod_dict);
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429 vptn = fis();
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430 check_size(map_vp_prod_number,vptn,vptn + vptn/2);
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431 if (flag == 0) {
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432 tn = map_vp_prod_number[vptn].token_number;
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433 return tn;
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434 }
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435 map_vp_prod_number[vptn].token_number = Token::create();
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436 sws(form1());
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437 aws(makeRule(tn));
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438 gen_vp_prods(ntkns,0,vptn);
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439 return ntkns;
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440 }
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441
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442 int vp_8a(int fn) {
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443 LOGSECTION("vp_8a");
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444 token_number_map *tp;
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445
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446 Token::create();
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447 tp = &map_token_number[ntkns];
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448 tp->non_terminal_flag = 1;
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449 map_form_number[fn].prim_tkn = ntkns;
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450 tp->zero_length_flag = 1;
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451 tp->fine_structure = 1;
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452 tp->immediate_action = 1;
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453 at(bnf_table, ntkns, fn);
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454 LOGV(ntkns) LCV(tp->immediate_action);
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455 return ntkns;
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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456 }
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diff changeset
457
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diff changeset
458 //static void build_choice(int tn) {
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diff changeset
459 static void build_choice(Token token) {
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460 LOGSECTION("build_choice");
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diff changeset
461 int *fl, nf, j;
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diff changeset
462 int i, zl;
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diff changeset
463 //token_number_map *tp;
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464
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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465
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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466 zl = 0;
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467 vp_forms();
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468 fl = list_base;
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469 nf = rws();
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470 //tp = &map_token_number[tn];
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471 //if (nf) tp->non_terminal_flag = 1;
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472 if (nf) {
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473 token->non_terminal_flag = 1;
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474 }
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diff changeset
475 for (i = 0; i < nf; i++) {
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diff changeset
476 Rule rule(fl[i]);
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477 //rule->prim_tkn = tn;
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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478 rule->prim_tkn = token;
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David A. Holland
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diff changeset
479 if (rule->length() == 0) {
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
480 zl = 1;
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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481 }
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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482 }
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
483 //tp->zero_length_flag = zl;
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diff changeset
484 token->zero_length_flag = zl;
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
David A. Holland
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diff changeset
485 for (j = 0; j < nf; j++) {
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
486 //at(bnf_table,tn,fl[j]);
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diff changeset
487 at(bnf_table,(int) token,fl[j]);
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488 }
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
489 }
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
David A. Holland
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diff changeset
490
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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491 //static void alter_prod(int tb, int nt, int tn, int vf) {
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diff changeset
492 static void alter_prod(Token tb, int nt, Token token, VpRule vpRule) {
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493 LOGSECTION("alter_prod");
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494
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495 LOGV(vpRule) LCV(token) LCV(tb) LCV(nt) LCV(Token::count());
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
496
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diff changeset
497 int i,j;
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498 iws();
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
499 for (i = tb, j = nt; j--; i++) {
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diff changeset
500 //if (i == tn) {
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
501 if (i == (int) token) {
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
502 //aws(vf);
13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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diff changeset
503 aws(vpRule);
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504 continue;
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505 }
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506 AgStack<RuleElement> elementStack;
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507 elementStack.push(RuleElement(i,0));
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508 //VpRule vpRule(vf);
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509 for (unsigned k = 0; k < vpRule->elementList.size(); k++) {
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510 elementStack.push(vpRule->elementList[k]);
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511 }
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512 VpRule newRule(elementStack, vpRule->procedureName);
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513 aws(newRule);
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514 }
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515 build_choice(token);
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516 }
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517
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518 static void alternate(void) {
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519 LOGSECTION("alternate");
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520 //int tb = ntkns+1;
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521 Token tb = Token::create();
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522 int *vfl = build_list();
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523 int nt = fis();
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524 //int tn = tb, k;
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525 Token tn;
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526 int k;
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527
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528 for (k = 1; k < nt; k++) tn = Token::create();
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529 iws();
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530 for (k = 0; k < nt; k++) {
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531 tn = tb + k;
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532 alter_prod(tb,nt,tn,vfl[k]);
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533 ruleElementStack.push(AgStack<RuleElement>()).top()
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534 .push(RuleElement(tn,0));
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535 aws(vp_form3(0));
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536 }
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537 DEALLOCATE(vfl);
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538 }
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539
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540 int vp_9(void){
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541 LOGSECTION("vp_9");
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542 alternate();
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543 return vp_1();
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544 }
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545
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546 int vp_10(void){
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547 LOGSECTION("vp_10");
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548 alternate();
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549 return vp_3();
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550 }
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551