Mercurial > ~dholland > hg > ag > index.cgi
annotate anagram/agcore/bpu.cpp @ 5:7661c1604e49
Add additional operator delete calls gcc 10 asked for.
author | David A. Holland |
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date | Mon, 30 May 2022 23:32:56 -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 1993-1999 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 * bpu.cpp - Utility routines for bpe3 |
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7 */ |
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8 |
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9 #include <ctype.h> |
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10 #include <stdarg.h> |
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11 #include "port.h" |
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12 |
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13 #include "arrays.h" |
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14 #include "bpe3.h" |
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15 #include "bpu.h" |
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16 #include "cd.h" |
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17 #include "data.h" |
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18 #include "dict.h" |
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19 #include "engdef.h" |
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20 #include "keyword.h" |
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21 #include "myalloc.h" |
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22 #include "q1glbl.h" |
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23 #include "rule.h" |
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24 #include "stacks.h" |
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25 #include "symbol.h" |
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26 #include "token.h" |
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27 |
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28 //#define INCLUDE_LOGGING |
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29 #include "log.h" |
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30 |
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31 |
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32 void template_string(const char *name, const char *tp, const char tc) { |
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33 ics(); |
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34 while (*tp) { |
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35 char c = *tp++; |
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36 if (c == tc) { |
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37 ass(name); |
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38 continue; |
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39 } |
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40 acs(c); |
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41 } |
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42 tss(); |
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43 } |
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44 |
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45 AgString subs_template(const char *name, const char *tp, const char tc) { |
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46 template_string(name, tp, tc); |
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47 return buildAgString(); |
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48 } |
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49 |
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50 unsigned find_token_number(const char *name) { |
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51 return Symbol(name)->token_number; |
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52 //return map_token_name[identify_string(name,tkn_dict)].token_number; |
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53 } |
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54 |
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55 int find_completions(int s, const unsigned **q) { |
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56 state_number_map *sp = &map_state_number[s]; |
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57 const unsigned *p = lstptr(*sp, chain_completions); |
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58 int n = sp->n_chain_completions; |
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59 if (n == 0 && sp->chain_gotos_index == 0) { |
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60 p = lstptr(*sp, completions); |
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61 n = sp->n_completions; |
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62 } |
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63 *q = p; |
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64 return n; |
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65 } |
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66 |
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67 void select_actions(int k) { |
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68 int n = tis()/3; |
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69 int *lb; |
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70 |
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71 list_space(n+1); |
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72 lb = list_base; |
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73 iws(); |
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74 while (n--) { |
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75 aws(lb[k]); |
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76 k += 3; |
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77 } |
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78 } |
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79 |
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80 void find_key_tokens(const int *pl, int n, int tw /*, int ct */) { |
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81 LOGSECTION("find_key_tokens"); |
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82 LOGV(n); |
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83 for (; n--; pl += tw) { |
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84 //int tn = *pl; |
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85 Token token = *pl; |
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86 LOGV(token); |
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87 //if (map_token_number[tn].key == 0) continue; |
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88 //if (token->key == 0) continue; |
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89 if (token->key.isNull()) { |
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90 continue; |
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91 } |
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92 isws(token); |
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93 } |
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94 } |
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95 |
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96 |
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97 /* |
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98 * Note that the text of the defined format must not contain a newline. |
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99 * Failure to abide by this rule will cause the line count to be |
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100 * incorrect. |
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101 */ |
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102 |
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103 void define_macro(const char *n, const char *fmt, ...) { |
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104 va_list ap; |
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105 fprintf(pe_file, "#define %s ", n); |
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106 va_start(ap, fmt); |
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107 vfprintf(pe_file, fmt, ap); |
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108 va_end(ap); |
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109 fputc('\n', pe_file); |
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110 pe_line_count++; |
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111 } |
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112 |
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113 void define_macro_default(const char *n, const char *fmt, ...) { |
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114 va_list ap; |
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115 char name_only[80]; |
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116 char *ptr; |
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117 |
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118 strcpy(name_only, n); |
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119 ptr = strchr(name_only, '('); |
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120 |
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121 if (ptr != NULL) { |
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122 *ptr = 0; |
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123 } |
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124 |
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125 fprintf(pe_file, "#ifndef %s\n#define %s ", name_only, n); |
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126 va_start(ap, fmt); |
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127 vfprintf(pe_file, fmt, ap); |
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128 va_end(ap); |
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129 fprintf(pe_file, "\n#endif\n"); |
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130 pe_line_count += 3; |
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131 } |
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132 |
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133 unsigned char *key_string(int tn) { |
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134 LOGSECTION("key_string"); |
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135 Keyword key = map_token_number[tn].key; |
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136 LOGV(tn) LCV(key) LCV(Keyword::count()); |
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137 |
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138 if (key.isNull()) { |
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139 return NULL; |
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140 } |
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141 LOGV(key->string); |
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142 return (unsigned char *) key->string.pointer(); |
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143 } |
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144 |
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145 /* |
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146 * Function: reducing_token |
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147 * Arguments: |
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148 * token number, tn |
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149 * state number, sn |
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150 * Returns: 0 if tn is _not_ a reducing token in the given state |
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151 * Otherwise, returns the number of the rule it reduces. |
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152 */ |
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153 |
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154 #if 0 /* no longer used */ |
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155 unsigned reducing_token(unsigned tn, unsigned sn) { |
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156 state_number_map *sp = &map_state_number[sn]; |
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157 const unsigned *p; |
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158 unsigned n = sp->n_reductions; /* number of reductions in this state */ |
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159 |
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160 if (n) { |
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161 p = lstptr(*sp, reductions); |
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162 while (n--) { |
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163 if (*p++ == tn) { |
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164 return *p; |
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165 } |
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166 p++; |
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167 } |
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168 return 0; |
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169 } |
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170 if (sp->n_completed_forms != 1) { |
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171 return 0; |
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172 } |
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173 if (shift_token(tn, sn)) { |
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174 return 0; |
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175 } |
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176 return *(lstptr(*sp,completed_forms)); |
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177 } |
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178 #endif /* 0 - no longer used */ |
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179 |
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180 Rule ruleReducedBy(Token token, unsigned sn) { |
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181 state_number_map *sp = &map_state_number[sn]; |
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182 const unsigned *p; |
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183 unsigned n = sp->n_reductions; /* number of reductions in this state */ |
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184 |
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185 if (n) { |
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186 p = lstptr(*sp, reductions); |
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187 while (n--) { |
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188 if (*p++ == (unsigned) token) { |
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189 return *p; |
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190 } |
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191 p++; |
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192 } |
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193 return 0; |
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194 } |
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195 if (sp->n_completed_forms != 1) { |
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196 // Exit if more than one completed rule |
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197 return 0; |
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198 } |
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199 if (shift_token(token, sn)) { |
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200 // Exit if there's a shift |
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201 return 0; |
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202 } |
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203 // Default reduction, return rule # |
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204 return *(lstptr(*sp, completed_forms)); |
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205 } |
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206 |
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207 void select_write_fragment(const char *name, const char *modes, |
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208 const char *suffix) { |
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209 char fragment[80]; |
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210 |
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211 strcpy(fragment, name); |
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212 strcat(fragment, modes); |
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213 strcat(fragment, suffix); |
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214 write_code_segment(fragment); |
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215 } |
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216 |
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217 int shift_token(unsigned tn, unsigned sn) { |
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218 const unsigned *p; |
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219 unsigned n; |
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220 |
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221 n = find_gotos(sn, &p); |
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222 while (n--) { |
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223 if (*p == tn) { |
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224 return 1; |
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225 } |
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226 else { |
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227 p += 2; |
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228 } |
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229 } |
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230 |
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231 n = find_completions(sn, &p); |
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232 while (n--) { |
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233 if (*p == tn) { |
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234 return 1; |
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235 } |
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236 else { |
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237 p += 2; |
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238 } |
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239 } |
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240 |
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241 return 0; |
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242 } |
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243 |
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244 void count_pe_line(const char *s, int k) { |
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245 LOGSECTION("count_pe_line"); |
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246 |
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247 while (k--) { |
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248 if (s[k] == '\n') { |
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249 pe_line_count++; |
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250 } |
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251 } |
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252 LOGV(pe_line_count); |
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253 } |
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254 |
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255 int wps(const char *s) { |
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256 LOGSECTION("wps"); |
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257 int k = strlen(s); |
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258 |
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259 fputs(s, pe_file); |
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260 count_pe_line(s, k); |
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261 return k; |
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262 } |
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263 |
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264 int wss(void) { |
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265 count_pe_line(string_base, tis()); |
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266 fputs(string_base, pe_file); |
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267 return rcs(); |
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268 } |
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269 |
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270 int wpe(const char *fs, ...) { |
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271 LOGSECTION("wpe"); |
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272 va_list ap; |
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273 char buf[2000]; |
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274 |
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275 va_start(ap, fs); |
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276 vsprintf(buf, fs, ap); |
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277 va_end(ap); |
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278 return wps(buf); |
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279 } |
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280 |
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281 void write_code_segment(const char *name) { |
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282 LOGSECTION("write_code_segment"); |
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283 LOGV(name); |
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284 if (name == NULL) { |
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285 return; |
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286 } |
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287 AgString text = code_segment(name); |
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288 if (!text.exists()) { |
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289 return; |
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290 } |
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291 char *buf = text.pointer(); |
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292 wps(buf); |
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293 wps("\n\n"); |
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294 } |
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295 |
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296 static AgString expand_my_macros(const char *s) { |
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297 LOGSECTION("expand_my_macros"); |
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298 char *p; |
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299 int col_no = 0, lb = 0, k; |
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300 |
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301 LOGV(s); |
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302 if (my_macros == NULL) { |
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303 return AgString(s); |
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304 } |
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305 ics(); |
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306 while (*s) { |
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307 char *word; |
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308 int index; |
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309 |
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310 while (*s && !isalpha(*s) && *s != '_') { |
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311 if (*s == '\n') { |
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312 acs(*s++); |
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313 col_no = 0; |
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314 while (*s && *s == ' ') { |
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315 col_no++, s++; |
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316 } |
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317 lb = col_no; |
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318 continue; |
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319 } |
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320 if (lb == col_no) { |
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321 for (k = lb; k--; ) { |
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322 acs(' '); |
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323 } |
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324 } |
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325 col_no++; |
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326 acs(*s++); |
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327 } |
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328 if (*s == 0) { |
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329 break; |
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330 } |
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331 ics(); |
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332 while (*s && (isalpha(*s) || *s == '_')) { |
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333 acs(*s++); |
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334 } |
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335 word = build_string(); |
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336 index = identify_string(word, my_macros); |
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337 if (index == 0) { |
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338 if (lb == col_no) { |
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339 for (k = lb; k--; ) { |
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340 acs(' '); |
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341 } |
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342 } |
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343 col_no += strlen(word); |
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344 ass(word); |
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345 DEALLOCATE(word); |
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346 continue; |
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347 } |
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348 DEALLOCATE(word); |
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349 p = my_macros_subs[index]; |
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350 if (*p == 0 && lb == col_no && (*s == '\n' || strncmp(s,"\\\n",2) == 0)) { |
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351 if (*s == '\\') { |
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352 s++; |
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353 } |
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354 s++; |
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355 col_no = 0; |
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356 while (*s && *s == ' ') { |
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357 col_no++; |
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358 s++; |
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359 } |
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360 lb = col_no; |
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361 continue; |
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362 } |
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363 if (lb == col_no) for (k = lb; k--;) acs(' '); |
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364 for (; *p; p++ ) { |
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365 acs(*p); |
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366 col_no++; |
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367 if (*p == '\n') { |
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368 for (k = lb; k--; ) { |
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369 acs(' '); |
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370 } |
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371 col_no = lb; |
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372 continue; |
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373 } |
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374 } |
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375 if (*s == '#') { |
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376 s++; |
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377 } |
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378 } |
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379 LOGV(string_base); |
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380 return buildAgString(); |
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381 } |
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382 |
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383 |
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384 AgString code_segment(const char *name) { |
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385 LOGSECTION("code_segment"); |
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386 |
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387 const char *rawtext = engdef_get(name); |
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388 LOGV(rawtext); |
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389 |
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390 AgString mx = expand_my_macros(rawtext); |
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391 LOGV(mx); |
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392 |
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393 return mx; |
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394 } |