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annotate dmd/AssocArrayLiteralExp.d @ 130:60bb0fe4563e

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dmdfe 2.037 first main iteration
author Eldar Insafutdinov <e.insafutdinov@gmail.com>
date Thu, 09 Sep 2010 22:51:44 +0100
parents e28b18c23469
children e3afd1303184
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1 module dmd.AssocArrayLiteralExp;
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2
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3 import dmd.common;
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4 import dmd.Expression;
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5 import dmd.GlobalExpressions;
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6 import dmd.WANT;
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7 import dmd.expression.Equal;
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8 import dmd.backend.elem;
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9 import dmd.InterState;
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10 import dmd.MATCH;
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11 import dmd.Type;
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12 import dmd.TypeAArray;
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13 import dmd.OutBuffer;
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14 import dmd.Loc;
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15 import dmd.Scope;
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16 import dmd.InlineCostState;
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17 import dmd.IRState;
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18 import dmd.TY;
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19 import dmd.InlineDoState;
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20 import dmd.HdrGenState;
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21 import dmd.InlineScanState;
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22 import dmd.ArrayTypes;
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23 import dmd.TOK;
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24 import dmd.PREC;
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25 import dmd.expression.Util;
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26 import dmd.backend.Util;
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27 import dmd.backend.TYM;
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28 import dmd.backend.mTY;
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29 import dmd.backend.OPER;
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30 import dmd.backend.RTLSYM;
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31
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32 class AssocArrayLiteralExp : Expression
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33 {
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34 Expressions keys;
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35 Expressions values;
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36
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37 this(Loc loc, Expressions keys, Expressions values)
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38 {
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39 super(loc, TOK.TOKassocarrayliteral, this.sizeof);
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40 assert(keys.dim == values.dim);
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41 this.keys = keys;
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42 this.values = values;
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43 }
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44
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45 override Expression syntaxCopy()
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46 {
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47 return new AssocArrayLiteralExp(loc,
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48 arraySyntaxCopy(keys), arraySyntaxCopy(values));
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49 }
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50
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51 override Expression semantic(Scope sc)
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52 {
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53 Expression e;
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54
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55 version (LOGSEMANTIC) {
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56 printf("AssocArrayLiteralExp.semantic('%s')\n", toChars());
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57 }
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58
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59 if (type)
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60 return this;
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61
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62 // Run semantic() on each element
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63 arrayExpressionSemantic(keys, sc);
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64 arrayExpressionSemantic(values, sc);
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65 expandTuples(keys);
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66 expandTuples(values);
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67 if (keys.dim != values.dim)
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68 {
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69 error("number of keys is %u, must match number of values %u", keys.dim, values.dim);
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70 keys.setDim(0);
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71 values.setDim(0);
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72 }
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74 Type tkey;
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75 Type tvalue;
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76 keys = arrayExpressionToCommonType(sc, keys, &tkey);
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77 values = arrayExpressionToCommonType(sc, values, &tvalue);
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78
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79 type = new TypeAArray(tvalue, tkey);
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80 type = type.semantic(loc, sc);
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81 return this;
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82 }
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83
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84 override bool isBool(bool result)
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85 {
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86 size_t dim = keys.dim;
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87 return result ? (dim != 0) : (dim == 0);
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88 }
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89
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90 override elem* toElem(IRState* irs)
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91 {
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92 elem* e;
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93 size_t dim;
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94
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95 //printf("AssocArrayLiteralExp.toElem() %s\n", toChars());
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96 dim = keys.dim;
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97 e = el_long(TYint, dim);
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98 for (size_t i = 0; i < dim; i++)
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99 {
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100 auto el = keys[i];
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101
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102 for (int j = 0; j < 2; j++)
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103 {
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104 elem* ep = el.toElem(irs);
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105
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106 if (tybasic(ep.Ety) == TYstruct || tybasic(ep.Ety) == TYarray)
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107 {
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108 ep = el_una(OPstrpar, TYstruct, ep);
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109 ep.Enumbytes = cast(uint)el.type.size();
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110 }
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111 //printf("[%d] %s\n", i, el.toChars());
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112 //elem_print(ep);
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113 e = el_param(ep, e);
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114 el = values[i];
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115 }
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116 }
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117
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118 Type t = type.toBasetype().mutableOf();
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119 assert(t.ty == Taarray);
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120 auto ta = cast(TypeAArray)t;
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121
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122 static if(false)
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123 {
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124 /* Unfortunately, the hash function for Aa (array of chars) is custom and
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125 * different from Axa and Aya, which get the generic hash function.
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126 * So, rewrite the type of the AArray so that if it's key type
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127 * is an array of const or invariant, make it an array of mutable.
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128 */
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129 Type tkey = ta.index.toBasetype();
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130 if (tkey.ty == Tarray)
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131 {
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132 tkey = tkey.nextOf().mutableOf().arrayOf();
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133 tkey = tkey.semantic(Loc(0), null);
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134 ta = new TypeAArray(ta.nextOf(), tkey);
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135 ta = cast(TypeAArray)ta.merge();
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136 }
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137 }
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138
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139 e = el_param(e, ta.getTypeInfo(null).toElem(irs));
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140
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141 // call _d_assocarrayliteralT(ti, dim, ...)
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142 e = el_bin(OPcall,TYnptr,el_var(rtlsym[RTLSYM_ASSOCARRAYLITERALT]),e);
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143
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144 el_setLoc(e,loc);
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145 return e;
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146 }
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147
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148 override bool checkSideEffect(int flag)
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149 {
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150 bool f = false;
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151
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152 for (size_t i = 0; i < keys.dim; i++)
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153 { auto key = keys[i];
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154 auto value = values[i];
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155
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156 f |= key.checkSideEffect(2);
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157 f |= value.checkSideEffect(2);
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158 }
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159 if (flag == 0 && f == 0)
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160 Expression.checkSideEffect(0);
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161 return f;
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162 }
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163
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164 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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165 {
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166 buf.writeByte('[');
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167 for (size_t i = 0; i < keys.dim; i++)
90
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168 { auto key = keys[i];
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169 auto value = values[i];
72
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170
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171 if (i)
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172 buf.writeByte(',');
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173 expToCBuffer(buf, hgs, key, PREC.PREC_assign);
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174 buf.writeByte(':');
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175 expToCBuffer(buf, hgs, value, PREC.PREC_assign);
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176 }
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177 buf.writeByte(']');
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178 }
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179
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180 override void toMangleBuffer(OutBuffer buf)
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181 {
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182 size_t dim = keys.dim;
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183 buf.printf("A%u", dim);
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184 for (size_t i = 0; i < dim; i++)
90
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185 { auto key = keys[i];
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186 auto value = values[i];
72
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187
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188 key.toMangleBuffer(buf);
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189 value.toMangleBuffer(buf);
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190 }
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191 }
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192
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193 override void scanForNestedRef(Scope sc)
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194 {
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195 assert(false);
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196 }
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197
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198 override Expression optimize(int result)
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199 {
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200 assert(keys.dim == values.dim);
90
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201 foreach (size_t i, Expression e; keys)
72
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202 {
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203 e = e.optimize(WANTvalue | (result & WANTinterpret));
90
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204 keys[i] = e;
72
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205
90
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206 e = values[i];
72
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207 e = e.optimize(WANTvalue | (result & WANTinterpret));
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208 values[i] = e;
72
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209 }
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210 return this;
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211 }
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212
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213 override Expression interpret(InterState istate)
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214 {
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215 Expressions keysx = keys;
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216 Expressions valuesx = values;
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217
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218 version (LOG) {
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219 printf("AssocArrayLiteralExp.interpret() %s\n", toChars());
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220 }
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221 for (size_t i = 0; i < keys.dim; i++)
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222 {
90
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223 auto ekey = keys[i];
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224 auto evalue = values[i];
72
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diff changeset
225 Expression ex;
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226
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diff changeset
227 ex = ekey.interpret(istate);
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228 if (ex is EXP_CANT_INTERPRET)
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229 goto Lerr;
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230
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231 /* If any changes, do Copy On Write
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232 */
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233 if (ex != ekey)
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234 {
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235 if (keysx == keys)
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236 keysx = cast(Expressions)keys.copy();
90
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237 keysx[i] = ex;
72
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238 }
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239
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240 ex = evalue.interpret(istate);
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241 if (ex is EXP_CANT_INTERPRET)
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242 goto Lerr;
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243
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diff changeset
244 /* If any changes, do Copy On Write
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245 */
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246 if (ex != evalue)
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247 {
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248 if (valuesx == values)
84
be2ab491772e Expressions -> Vector!Expression
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249 valuesx = values.copy();
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250 valuesx[i] = ex;
72
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251 }
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252 }
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253
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254 if (keysx != keys)
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255 expandTuples(keysx);
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256 if (valuesx != values)
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257 expandTuples(valuesx);
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258 if (keysx.dim != valuesx.dim)
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259 goto Lerr;
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260
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diff changeset
261 /* Remove duplicate keys
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262 */
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263 for (size_t i = 1; i < keysx.dim; i++)
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264 {
90
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265 auto ekey = keysx[i - 1];
72
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266
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diff changeset
267 for (size_t j = i; j < keysx.dim; j++)
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268 {
90
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diff changeset
269 auto ekey2 = keysx[j];
72
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270 Expression ex = Equal(TOKequal, Type.tbool, ekey, ekey2);
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271 if (ex is EXP_CANT_INTERPRET)
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272 goto Lerr;
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273 if (ex.isBool(true)) // if a match
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274 {
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275 // Remove ekey
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276 if (keysx == keys)
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277 keysx = cast(Expressions)keys.copy();
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278 if (valuesx == values)
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279 valuesx = cast(Expressions)values.copy();
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280 keysx.remove(i - 1);
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281 valuesx.remove(i - 1);
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282 i -= 1; // redo the i'th iteration
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283 break;
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284 }
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285 }
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286 }
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diff changeset
287
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diff changeset
288 if (keysx != keys || valuesx != values)
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289 {
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diff changeset
290 AssocArrayLiteralExp ae;
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diff changeset
291 ae = new AssocArrayLiteralExp(loc, keysx, valuesx);
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diff changeset
292 ae.type = type;
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diff changeset
293 return ae;
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294 }
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295 return this;
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296
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diff changeset
297 Lerr:
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diff changeset
298 if (keysx != keys)
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diff changeset
299 delete keysx;
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diff changeset
300 if (valuesx != values)
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diff changeset
301 delete values;
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diff changeset
302 return EXP_CANT_INTERPRET;
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303 }
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diff changeset
304
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diff changeset
305 override MATCH implicitConvTo(Type t)
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diff changeset
306 {
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diff changeset
307 MATCH result = MATCHexact;
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diff changeset
308
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diff changeset
309 Type typeb = type.toBasetype();
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diff changeset
310 Type tb = t.toBasetype();
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diff changeset
311 if (tb.ty == Taarray && typeb.ty == Taarray)
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diff changeset
312 {
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diff changeset
313 for (size_t i = 0; i < keys.dim; i++)
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diff changeset
314 {
90
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diff changeset
315 auto e = keys[i];
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diff changeset
316 auto m = cast(MATCH)e.implicitConvTo((cast(TypeAArray)tb).index);
72
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317 if (m < result)
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diff changeset
318 result = m; // remember worst match
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diff changeset
319 if (result == MATCHnomatch)
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320 break; // no need to check for worse
90
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diff changeset
321 e = values[i];
72
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diff changeset
322 m = cast(MATCH)e.implicitConvTo(tb.nextOf());
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diff changeset
323 if (m < result)
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diff changeset
324 result = m; // remember worst match
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diff changeset
325 if (result == MATCHnomatch)
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diff changeset
326 break; // no need to check for worse
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diff changeset
327 }
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diff changeset
328 return result;
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diff changeset
329 }
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diff changeset
330 else
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
331 return Expression.implicitConvTo(t);
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diff changeset
332 }
2e2a5c3f943a reduced warnings by adding override to the methods
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parents: 68
diff changeset
333
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diff changeset
334 override Expression castTo(Scope sc, Type t)
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diff changeset
335 {
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
336 if (type == t)
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diff changeset
337 return this;
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338 AssocArrayLiteralExp e = this;
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339 Type typeb = type.toBasetype();
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340 Type tb = t.toBasetype();
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341 if (tb.ty == Taarray && typeb.ty == Taarray && tb.nextOf().toBasetype().ty != Tvoid)
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342 {
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343 e = cast(AssocArrayLiteralExp)copy();
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344 e.keys = cast(Expressions)keys.copy();
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345 e.values = cast(Expressions)values.copy();
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346 assert(keys.dim == values.dim);
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347 for (size_t i = 0; i < keys.dim; i++)
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348 {
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349 auto ex = values[i];
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350 ex = ex.castTo(sc, tb.nextOf());
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351 e.values[i] = ex;
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352
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353 ex = keys[i];
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354 ex = ex.castTo(sc, (cast(TypeAArray)tb).index);
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355 e.keys[i] = ex;
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356 }
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357 e.type = t;
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358 return e;
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359 }
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360 L1:
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361 return e.Expression.castTo(sc, t);
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362 }
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363
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364 override bool canThrow()
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365 {
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366 return true;
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367 }
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368
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369 override int inlineCost(InlineCostState* ics)
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370 {
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371 assert(false);
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372 }
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373
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374 override Expression doInline(InlineDoState ids)
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375 {
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376 assert(false);
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377 }
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378
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379 override Expression inlineScan(InlineScanState* iss)
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380 {
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381 assert(false);
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382 }
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383 }