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annotate dmd/AddExp.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 2e2a5c3f943a
children 6caaf0256da1
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1 module dmd.AddExp;
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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.Identifier;
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6 import dmd.backend.elem;
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7 import dmd.InterState;
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8 import dmd.OutBuffer;
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9 import dmd.Loc;
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10 import dmd.Id;
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11 import dmd.Scope;
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12 import dmd.IRState;
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13 import dmd.ArrayTypes;
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14 import dmd.BinExp;
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15 import dmd.Type;
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16 import dmd.TOK;
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17 import dmd.TY;
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18
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19 import dmd.expression.Add;
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20 import dmd.backend.Util;
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21 import dmd.backend.OPER;
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22
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23 class AddExp : BinExp
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24 {
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25 this(Loc loc, Expression e1, Expression e2)
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26 {
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27 super(loc, TOK.TOKadd, AddExp.sizeof, e1, e2);
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28 }
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29
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30 override Expression semantic(Scope sc)
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31 {
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32 Expression e;
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33
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34 version (LOGSEMANTIC) {
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35 printf("AddExp.semantic('%s')\n", toChars());
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36 }
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37 if (!type)
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38 {
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39 BinExp.semanticp(sc);
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40
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41 e = op_overload(sc);
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42 if (e)
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43 return e;
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44
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45 Type tb1 = e1.type.toBasetype();
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46 Type tb2 = e2.type.toBasetype();
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47
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48 if ((tb1.ty == TY.Tarray || tb1.ty == TY.Tsarray) &&
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49 (tb2.ty == TY.Tarray || tb2.ty == TY.Tsarray) &&
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50 tb1.nextOf().equals(tb2.nextOf())
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51 )
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52 {
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53 type = e1.type;
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54 e = this;
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55 }
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56 else if (tb1.ty == TY.Tpointer && e2.type.isintegral() ||
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57 tb2.ty == TY.Tpointer && e1.type.isintegral())
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58 e = scaleFactor(sc);
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59 else if (tb1.ty == TY.Tpointer && tb2.ty == TY.Tpointer)
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60 {
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61 incompatibleTypes();
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62 type = e1.type;
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63 e = this;
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64 }
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65 else
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66 {
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67 typeCombine(sc);
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68 if ((e1.type.isreal() && e2.type.isimaginary()) ||
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69 (e1.type.isimaginary() && e2.type.isreal()))
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70 {
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71 switch (type.toBasetype().ty)
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72 {
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73 case TY.Tfloat32:
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74 case TY.Timaginary32:
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75 type = Type.tcomplex32;
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76 break;
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77
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78 case TY.Tfloat64:
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79 case TY.Timaginary64:
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80 type = Type.tcomplex64;
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81 break;
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82
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83 case TY.Tfloat80:
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84 case TY.Timaginary80:
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85 type = Type.tcomplex80;
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86 break;
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87 }
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88 }
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89 e = this;
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90 }
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91 return e;
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92 }
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93 return this;
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94 }
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95
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96 override Expression optimize(int result)
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97 {
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98 Expression e;
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99
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100 //printf("AddExp::optimize(%s)\n", toChars());
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101 e1 = e1.optimize(result);
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102 e2 = e2.optimize(result);
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103 if (e1.isConst() && e2.isConst())
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104 {
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105 if (e1.op == TOK.TOKsymoff && e2.op == TOK.TOKsymoff)
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106 return this;
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107 e = Add(type, e1, e2);
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108 }
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109 else
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110 e = this;
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111
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112 return e;
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113 }
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114
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115 override Expression interpret(InterState istate)
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116 {
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117 assert(false);
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118 }
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119
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120 override void buildArrayIdent(OutBuffer buf, Expressions arguments)
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121 {
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122 Exp_buildArrayIdent(buf, arguments, "Add");
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123 }
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124
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125 override Expression buildArrayLoop(Arguments fparams)
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126 {
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127 /* Evaluate assign expressions left to right
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128 */
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129 Expression ex1 = e1.buildArrayLoop(fparams);
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130 Expression ex2 = e2.buildArrayLoop(fparams);
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131 Expression e = new AddExp(Loc(0), ex1, ex2);
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132 return e;
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133 }
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134
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135 override bool isCommutative()
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136 {
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137 return true;
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138 }
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139
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140 override Identifier opId()
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141 {
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142 return Id.add;
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143 }
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144
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145 override Identifier opId_r()
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146 {
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147 return Id.add_r;
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148 }
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149
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150 override elem* toElem(IRState* irs)
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151 {
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152 elem *e;
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153 Type tb1 = e1.type.toBasetype();
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154 Type tb2 = e2.type.toBasetype();
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155
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156 if ((tb1.ty == TY.Tarray || tb1.ty == TY.Tsarray) && (tb2.ty == TY.Tarray || tb2.ty == TY.Tsarray))
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157 {
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158 error("Array operation %s not implemented", toChars());
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159 e = el_long(type.totym(), 0); // error recovery
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160 }
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161 else
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162 e = toElemBin(irs, OPER.OPadd);
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163
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164 return e;
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165 }
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166 }
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167