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annotate dmd/AssocArrayLiteralExp.d @ 114:e28b18c23469

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added a module dmd.common for commonly used stuff it currently holds code for consistency checking of predefined versions also added a VisualD project file
author Trass3r
date Wed, 01 Sep 2010 18:21:58 +0200
parents ceda59b4d255
children 60bb0fe4563e
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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 Type tkey = null;
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55 Type tvalue = null;
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56
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57 version (LOGSEMANTIC) {
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58 printf("AssocArrayLiteralExp.semantic('%s')\n", toChars());
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59 }
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60
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61 if (type)
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62 return this;
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63
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64 // Run semantic() on each element
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65 for (size_t i = 0; i < keys.dim; i++)
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66 { auto key = keys[i];
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67 auto value = values[i];
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69 key = key.semantic(sc);
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70 value = value.semantic(sc);
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71
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72 keys[i] = key;
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73 values[i] = value;
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74 }
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75 expandTuples(keys);
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76 expandTuples(values);
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77 if (keys.dim != values.dim)
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78 {
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79 error("number of keys is %u, must match number of values %u", keys.dim, values.dim);
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80 keys.setDim(0);
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81 values.setDim(0);
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82 }
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83 for (size_t i = 0; i < keys.dim; i++)
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84 { auto key = keys[i];
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85 auto value = values[i];
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86
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87 if (!key.type)
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88 error("%s has no value", key.toChars());
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89 if (!value.type)
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90 error("%s has no value", value.toChars());
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91 key = resolveProperties(sc, key);
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92 value = resolveProperties(sc, value);
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93
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94 if (!tkey)
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95 tkey = key.type;
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96 else
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97 key = key.implicitCastTo(sc, tkey);
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98 keys[i] = key;
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99
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100 if (!tvalue)
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101 tvalue = value.type;
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102 else
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103 value = value.implicitCastTo(sc, tvalue);
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104 values[i] = value;
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105 }
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106
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107 if (!tkey)
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108 tkey = Type.tvoid;
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109 if (!tvalue)
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110 tvalue = Type.tvoid;
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111 type = new TypeAArray(tvalue, tkey);
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112 type = type.semantic(loc, sc);
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113 return this;
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114 }
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115
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116 override bool isBool(bool result)
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117 {
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118 size_t dim = keys.dim;
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119 return result ? (dim != 0) : (dim == 0);
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120 }
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121
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122 override elem* toElem(IRState* irs)
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123 {
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124 elem* e;
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125 size_t dim;
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126
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127 //printf("AssocArrayLiteralExp.toElem() %s\n", toChars());
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128 dim = keys.dim;
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129 e = el_long(TYint, dim);
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130 for (size_t i = 0; i < dim; i++)
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131 {
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132 auto el = keys[i];
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133
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134 for (int j = 0; j < 2; j++)
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135 {
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136 elem* ep = el.toElem(irs);
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137
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138 if (tybasic(ep.Ety) == TYstruct || tybasic(ep.Ety) == TYarray)
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139 {
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140 ep = el_una(OPstrpar, TYstruct, ep);
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141 ep.Enumbytes = cast(uint)el.type.size();
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142 }
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143 //printf("[%d] %s\n", i, el.toChars());
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144 //elem_print(ep);
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145 e = el_param(ep, e);
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146 el = values[i];
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147 }
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148 }
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149
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150 Type t = type.toBasetype().mutableOf();
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151 assert(t.ty == Taarray);
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152 auto ta = cast(TypeAArray)t;
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153
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154 static if(false)
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155 {
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156 /* Unfortunately, the hash function for Aa (array of chars) is custom and
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157 * different from Axa and Aya, which get the generic hash function.
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158 * So, rewrite the type of the AArray so that if it's key type
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159 * is an array of const or invariant, make it an array of mutable.
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160 */
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161 Type tkey = ta.index.toBasetype();
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162 if (tkey.ty == Tarray)
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163 {
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164 tkey = tkey.nextOf().mutableOf().arrayOf();
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165 tkey = tkey.semantic(Loc(0), null);
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166 ta = new TypeAArray(ta.nextOf(), tkey);
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167 ta = cast(TypeAArray)ta.merge();
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168 }
108
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169 }
72
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170
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171 e = el_param(e, ta.getTypeInfo(null).toElem(irs));
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172
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173 // call _d_assocarrayliteralT(ti, dim, ...)
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174 e = el_bin(OPcall,TYnptr,el_var(rtlsym[RTLSYM_ASSOCARRAYLITERALT]),e);
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175
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176 el_setLoc(e,loc);
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177 return e;
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178 }
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179
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180 override bool checkSideEffect(int flag)
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181 {
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182 bool f = false;
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183
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184 for (size_t i = 0; i < keys.dim; i++)
90
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185 { auto key = keys[i];
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186 auto value = values[i];
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187
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188 f |= key.checkSideEffect(2);
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189 f |= value.checkSideEffect(2);
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190 }
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191 if (flag == 0 && f == 0)
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192 Expression.checkSideEffect(0);
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193 return f;
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194 }
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195
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196 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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197 {
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198 buf.writeByte('[');
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199 for (size_t i = 0; i < keys.dim; i++)
90
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200 { auto key = keys[i];
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201 auto value = values[i];
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202
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203 if (i)
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204 buf.writeByte(',');
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205 expToCBuffer(buf, hgs, key, PREC.PREC_assign);
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206 buf.writeByte(':');
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207 expToCBuffer(buf, hgs, value, PREC.PREC_assign);
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208 }
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209 buf.writeByte(']');
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210 }
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211
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212 override void toMangleBuffer(OutBuffer buf)
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213 {
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214 size_t dim = keys.dim;
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215 buf.printf("A%u", dim);
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216 for (size_t i = 0; i < dim; i++)
90
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217 { auto key = keys[i];
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218 auto value = values[i];
72
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219
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220 key.toMangleBuffer(buf);
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221 value.toMangleBuffer(buf);
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222 }
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223 }
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224
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225 override void scanForNestedRef(Scope sc)
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226 {
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227 assert(false);
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228 }
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229
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230 override Expression optimize(int result)
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231 {
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232 assert(keys.dim == values.dim);
90
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233 foreach (size_t i, Expression e; keys)
72
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234 {
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235 e = e.optimize(WANTvalue | (result & WANTinterpret));
90
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236 keys[i] = e;
72
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237
90
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238 e = values[i];
72
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239 e = e.optimize(WANTvalue | (result & WANTinterpret));
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240 values[i] = e;
72
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241 }
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242 return this;
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243 }
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244
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245 override Expression interpret(InterState istate)
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246 {
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247 Expressions keysx = keys;
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248 Expressions valuesx = values;
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249
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250 version (LOG) {
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251 printf("AssocArrayLiteralExp.interpret() %s\n", toChars());
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252 }
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253 for (size_t i = 0; i < keys.dim; i++)
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254 {
90
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255 auto ekey = keys[i];
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256 auto evalue = values[i];
72
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257 Expression ex;
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258
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259 ex = ekey.interpret(istate);
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260 if (ex is EXP_CANT_INTERPRET)
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261 goto Lerr;
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262
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263 /* If any changes, do Copy On Write
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264 */
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265 if (ex != ekey)
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266 {
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267 if (keysx == keys)
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268 keysx = cast(Expressions)keys.copy();
90
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269 keysx[i] = ex;
72
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270 }
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271
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272 ex = evalue.interpret(istate);
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273 if (ex is EXP_CANT_INTERPRET)
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274 goto Lerr;
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275
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276 /* If any changes, do Copy On Write
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277 */
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278 if (ex != evalue)
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279 {
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280 if (valuesx == values)
84
be2ab491772e Expressions -> Vector!Expression
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281 valuesx = values.copy();
90
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282 valuesx[i] = ex;
72
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283 }
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284 }
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285
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286 if (keysx != keys)
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287 expandTuples(keysx);
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288 if (valuesx != values)
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289 expandTuples(valuesx);
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290 if (keysx.dim != valuesx.dim)
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291 goto Lerr;
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292
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293 /* Remove duplicate keys
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294 */
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295 for (size_t i = 1; i < keysx.dim; i++)
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296 {
90
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297 auto ekey = keysx[i - 1];
72
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298
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diff changeset
299 for (size_t j = i; j < keysx.dim; j++)
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300 {
90
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diff changeset
301 auto ekey2 = keysx[j];
72
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302 Expression ex = Equal(TOKequal, Type.tbool, ekey, ekey2);
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303 if (ex is EXP_CANT_INTERPRET)
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304 goto Lerr;
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305 if (ex.isBool(true)) // if a match
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306 {
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diff changeset
307 // Remove ekey
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diff changeset
308 if (keysx == keys)
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diff changeset
309 keysx = cast(Expressions)keys.copy();
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diff changeset
310 if (valuesx == values)
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311 valuesx = cast(Expressions)values.copy();
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diff changeset
312 keysx.remove(i - 1);
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diff changeset
313 valuesx.remove(i - 1);
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diff changeset
314 i -= 1; // redo the i'th iteration
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315 break;
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316 }
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317 }
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318 }
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diff changeset
319
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diff changeset
320 if (keysx != keys || valuesx != values)
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diff changeset
321 {
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diff changeset
322 AssocArrayLiteralExp ae;
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diff changeset
323 ae = new AssocArrayLiteralExp(loc, keysx, valuesx);
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diff changeset
324 ae.type = type;
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325 return ae;
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326 }
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327 return this;
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328
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diff changeset
329 Lerr:
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diff changeset
330 if (keysx != keys)
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diff changeset
331 delete keysx;
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diff changeset
332 if (valuesx != values)
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parents: 68
diff changeset
333 delete values;
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diff changeset
334 return EXP_CANT_INTERPRET;
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335 }
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diff changeset
336
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diff changeset
337 override MATCH implicitConvTo(Type t)
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diff changeset
338 {
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339 MATCH result = MATCHexact;
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340
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341 Type typeb = type.toBasetype();
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342 Type tb = t.toBasetype();
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343 if (tb.ty == Taarray && typeb.ty == Taarray)
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344 {
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345 for (size_t i = 0; i < keys.dim; i++)
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346 {
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347 auto e = keys[i];
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348 auto m = cast(MATCH)e.implicitConvTo((cast(TypeAArray)tb).index);
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349 if (m < result)
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350 result = m; // remember worst match
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351 if (result == MATCHnomatch)
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352 break; // no need to check for worse
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353 e = values[i];
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354 m = cast(MATCH)e.implicitConvTo(tb.nextOf());
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355 if (m < result)
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356 result = m; // remember worst match
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357 if (result == MATCHnomatch)
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358 break; // no need to check for worse
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359 }
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360 return result;
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361 }
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362 else
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363 return Expression.implicitConvTo(t);
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364 }
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365
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366 override Expression castTo(Scope sc, Type t)
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367 {
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368 if (type == t)
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369 return this;
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370 AssocArrayLiteralExp e = this;
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371 Type typeb = type.toBasetype();
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372 Type tb = t.toBasetype();
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373 if (tb.ty == Taarray && typeb.ty == Taarray && tb.nextOf().toBasetype().ty != Tvoid)
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374 {
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375 e = cast(AssocArrayLiteralExp)copy();
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376 e.keys = cast(Expressions)keys.copy();
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377 e.values = cast(Expressions)values.copy();
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378 assert(keys.dim == values.dim);
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379 for (size_t i = 0; i < keys.dim; i++)
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380 {
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381 auto ex = values[i];
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382 ex = ex.castTo(sc, tb.nextOf());
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383 e.values[i] = ex;
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384
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385 ex = keys[i];
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386 ex = ex.castTo(sc, (cast(TypeAArray)tb).index);
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387 e.keys[i] = ex;
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388 }
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389 e.type = t;
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390 return e;
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391 }
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392 L1:
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393 return e.Expression.castTo(sc, t);
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394 }
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395
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396 override bool canThrow()
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397 {
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398 return true;
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399 }
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400
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401 override int inlineCost(InlineCostState* ics)
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402 {
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403 assert(false);
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404 }
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405
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406 override Expression doInline(InlineDoState ids)
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407 {
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408 assert(false);
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409 }
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410
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411 override Expression inlineScan(InlineScanState* iss)
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412 {
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413 assert(false);
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414 }
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415 }