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annotate dmd/AssocArrayLiteralExp.d @ 178:e3afd1303184

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Many small bugs fixed Made all classes derive from TObject to detect memory leaks (functionality is disabled for now) Began work on overriding backend memory allocations (to avoid memory leaks)
author korDen
date Sun, 17 Oct 2010 07:42:00 +0400
parents 60bb0fe4563e
children b0d41ff5e0df
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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 register();
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40
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41 super(loc, TOK.TOKassocarrayliteral, this.sizeof);
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42 assert(keys.dim == values.dim);
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43 this.keys = keys;
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44 this.values = values;
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45 }
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46
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47 override Expression syntaxCopy()
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48 {
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49 return new AssocArrayLiteralExp(loc,
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50 arraySyntaxCopy(keys), arraySyntaxCopy(values));
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51 }
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52
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53 override Expression semantic(Scope sc)
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54 {
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55 Expression e;
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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 arrayExpressionSemantic(keys, sc);
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66 arrayExpressionSemantic(values, sc);
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67 expandTuples(keys);
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68 expandTuples(values);
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69 if (keys.dim != values.dim)
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70 {
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71 error("number of keys is %u, must match number of values %u", keys.dim, values.dim);
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72 keys.setDim(0);
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73 values.setDim(0);
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74 }
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75
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76 Type tkey;
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77 Type tvalue;
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78 keys = arrayExpressionToCommonType(sc, keys, &tkey);
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79 values = arrayExpressionToCommonType(sc, values, &tvalue);
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80
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81 type = new TypeAArray(tvalue, tkey);
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82 type = type.semantic(loc, sc);
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83 return this;
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84 }
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85
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86 override bool isBool(bool result)
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87 {
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88 size_t dim = keys.dim;
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89 return result ? (dim != 0) : (dim == 0);
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90 }
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91
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92 override elem* toElem(IRState* irs)
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93 {
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94 elem* e;
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95 size_t dim;
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96
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97 //printf("AssocArrayLiteralExp.toElem() %s\n", toChars());
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98 dim = keys.dim;
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99 e = el_long(TYint, dim);
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100 for (size_t i = 0; i < dim; i++)
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101 {
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102 auto el = keys[i];
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103
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104 for (int j = 0; j < 2; j++)
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105 {
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106 elem* ep = el.toElem(irs);
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107
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108 if (tybasic(ep.Ety) == TYstruct || tybasic(ep.Ety) == TYarray)
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109 {
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110 ep = el_una(OPstrpar, TYstruct, ep);
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111 ep.Enumbytes = cast(uint)el.type.size();
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112 }
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113 //printf("[%d] %s\n", i, el.toChars());
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114 //elem_print(ep);
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115 e = el_param(ep, e);
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116 el = values[i];
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117 }
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118 }
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119
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120 Type t = type.toBasetype().mutableOf();
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121 assert(t.ty == Taarray);
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122 auto ta = cast(TypeAArray)t;
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123
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124 static if(false)
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125 {
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126 /* Unfortunately, the hash function for Aa (array of chars) is custom and
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127 * different from Axa and Aya, which get the generic hash function.
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128 * So, rewrite the type of the AArray so that if it's key type
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129 * is an array of const or invariant, make it an array of mutable.
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130 */
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131 Type tkey = ta.index.toBasetype();
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132 if (tkey.ty == Tarray)
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133 {
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134 tkey = tkey.nextOf().mutableOf().arrayOf();
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135 tkey = tkey.semantic(Loc(0), null);
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136 ta = new TypeAArray(ta.nextOf(), tkey);
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137 ta = cast(TypeAArray)ta.merge();
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138 }
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139 }
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140
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141 e = el_param(e, ta.getTypeInfo(null).toElem(irs));
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142
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143 // call _d_assocarrayliteralT(ti, dim, ...)
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144 e = el_bin(OPcall,TYnptr,el_var(rtlsym[RTLSYM_ASSOCARRAYLITERALT]),e);
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145
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146 el_setLoc(e,loc);
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147 return e;
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148 }
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149
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150 override bool checkSideEffect(int flag)
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151 {
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152 bool f = false;
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153
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154 for (size_t i = 0; i < keys.dim; i++)
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155 { auto key = keys[i];
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156 auto value = values[i];
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157
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158 f |= key.checkSideEffect(2);
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159 f |= value.checkSideEffect(2);
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160 }
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161 if (flag == 0 && f == 0)
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162 Expression.checkSideEffect(0);
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163 return f;
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164 }
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165
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166 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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167 {
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168 buf.writeByte('[');
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169 for (size_t i = 0; i < keys.dim; i++)
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170 { auto key = keys[i];
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171 auto value = values[i];
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172
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173 if (i)
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174 buf.writeByte(',');
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175 expToCBuffer(buf, hgs, key, PREC.PREC_assign);
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176 buf.writeByte(':');
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177 expToCBuffer(buf, hgs, value, PREC.PREC_assign);
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178 }
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179 buf.writeByte(']');
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180 }
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181
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182 override void toMangleBuffer(OutBuffer buf)
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183 {
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184 size_t dim = keys.dim;
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185 buf.printf("A%u", dim);
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186 for (size_t i = 0; i < dim; i++)
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187 { auto key = keys[i];
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188 auto value = values[i];
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189
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190 key.toMangleBuffer(buf);
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191 value.toMangleBuffer(buf);
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192 }
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193 }
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194
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195 override void scanForNestedRef(Scope sc)
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196 {
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197 assert(false);
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198 }
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199
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200 override Expression optimize(int result)
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201 {
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202 assert(keys.dim == values.dim);
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203 foreach (size_t i, Expression e; keys)
72
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204 {
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205 e = e.optimize(WANTvalue | (result & WANTinterpret));
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206 keys[i] = e;
72
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207
90
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208 e = values[i];
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209 e = e.optimize(WANTvalue | (result & WANTinterpret));
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210 values[i] = e;
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211 }
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212 return this;
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213 }
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214
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215 override Expression interpret(InterState istate)
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216 {
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217 Expressions keysx = keys;
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218 Expressions valuesx = values;
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219
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220 version (LOG) {
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221 printf("AssocArrayLiteralExp.interpret() %s\n", toChars());
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222 }
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223 for (size_t i = 0; i < keys.dim; i++)
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224 {
90
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225 auto ekey = keys[i];
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226 auto evalue = values[i];
72
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227 Expression ex;
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228
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229 ex = ekey.interpret(istate);
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230 if (ex is EXP_CANT_INTERPRET)
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231 goto Lerr;
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232
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233 /* If any changes, do Copy On Write
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234 */
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235 if (ex != ekey)
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236 {
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237 if (keysx == keys)
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238 keysx = cast(Expressions)keys.copy();
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239 keysx[i] = ex;
72
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240 }
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241
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242 ex = evalue.interpret(istate);
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243 if (ex is EXP_CANT_INTERPRET)
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244 goto Lerr;
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245
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246 /* If any changes, do Copy On Write
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247 */
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248 if (ex != evalue)
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249 {
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250 if (valuesx == values)
84
be2ab491772e Expressions -> Vector!Expression
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251 valuesx = values.copy();
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252 valuesx[i] = ex;
72
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253 }
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254 }
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255
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256 if (keysx != keys)
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257 expandTuples(keysx);
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258 if (valuesx != values)
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259 expandTuples(valuesx);
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260 if (keysx.dim != valuesx.dim)
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261 goto Lerr;
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262
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263 /* Remove duplicate keys
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264 */
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265 for (size_t i = 1; i < keysx.dim; i++)
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266 {
90
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267 auto ekey = keysx[i - 1];
72
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268
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269 for (size_t j = i; j < keysx.dim; j++)
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270 {
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271 auto ekey2 = keysx[j];
72
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272 Expression ex = Equal(TOKequal, Type.tbool, ekey, ekey2);
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273 if (ex is EXP_CANT_INTERPRET)
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274 goto Lerr;
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275 if (ex.isBool(true)) // if a match
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276 {
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277 // Remove ekey
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278 if (keysx == keys)
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279 keysx = cast(Expressions)keys.copy();
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280 if (valuesx == values)
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281 valuesx = cast(Expressions)values.copy();
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282 keysx.remove(i - 1);
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283 valuesx.remove(i - 1);
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284 i -= 1; // redo the i'th iteration
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285 break;
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286 }
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287 }
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288 }
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289
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290 if (keysx != keys || valuesx != values)
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291 {
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diff changeset
292 AssocArrayLiteralExp ae;
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293 ae = new AssocArrayLiteralExp(loc, keysx, valuesx);
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294 ae.type = type;
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295 return ae;
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296 }
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297 return this;
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298
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299 Lerr:
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300 if (keysx != keys)
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diff changeset
301 delete keysx;
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diff changeset
302 if (valuesx != values)
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diff changeset
303 delete values;
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304 return EXP_CANT_INTERPRET;
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305 }
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306
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307 override MATCH implicitConvTo(Type t)
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308 {
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309 MATCH result = MATCHexact;
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310
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diff changeset
311 Type typeb = type.toBasetype();
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diff changeset
312 Type tb = t.toBasetype();
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diff changeset
313 if (tb.ty == Taarray && typeb.ty == Taarray)
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314 {
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315 for (size_t i = 0; i < keys.dim; i++)
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316 {
90
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317 auto e = keys[i];
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diff changeset
318 auto m = cast(MATCH)e.implicitConvTo((cast(TypeAArray)tb).index);
72
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319 if (m < result)
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diff changeset
320 result = m; // remember worst match
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321 if (result == MATCHnomatch)
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322 break; // no need to check for worse
90
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323 e = values[i];
72
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diff changeset
324 m = cast(MATCH)e.implicitConvTo(tb.nextOf());
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325 if (m < result)
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326 result = m; // remember worst match
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diff changeset
327 if (result == MATCHnomatch)
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328 break; // no need to check for worse
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329 }
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330 return result;
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331 }
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diff changeset
332 else
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333 return Expression.implicitConvTo(t);
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334 }
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diff changeset
335
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diff changeset
336 override Expression castTo(Scope sc, Type t)
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337 {
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338 if (type == t)
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339 return this;
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340 AssocArrayLiteralExp e = this;
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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 && tb.nextOf().toBasetype().ty != Tvoid)
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344 {
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345 e = cast(AssocArrayLiteralExp)copy();
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346 e.keys = cast(Expressions)keys.copy();
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347 e.values = cast(Expressions)values.copy();
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348 assert(keys.dim == values.dim);
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349 for (size_t i = 0; i < keys.dim; i++)
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350 {
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351 auto ex = values[i];
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352 ex = ex.castTo(sc, tb.nextOf());
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353 e.values[i] = ex;
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354
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355 ex = keys[i];
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356 ex = ex.castTo(sc, (cast(TypeAArray)tb).index);
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357 e.keys[i] = ex;
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358 }
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359 e.type = t;
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360 return e;
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361 }
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362 L1:
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363 return e.Expression.castTo(sc, t);
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364 }
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365
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366 override bool canThrow()
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367 {
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368 return true;
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369 }
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370
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371 override int inlineCost(InlineCostState* ics)
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372 {
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373 assert(false);
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374 }
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375
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376 override Expression doInline(InlineDoState ids)
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377 {
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378 assert(false);
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379 }
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380
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381 override Expression inlineScan(InlineScanState* iss)
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382 {
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383 assert(false);
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384 }
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385 }