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annotate dmd/OrExp.d @ 182:b64060ab22df

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Now compileable with dmd2.050
author korDen
date Sat, 30 Oct 2010 05:05:32 +0400
parents e3afd1303184
children b0d41ff5e0df
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1 module dmd.OrExp;
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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.InterState;
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7 import dmd.MATCH;
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8 import dmd.Type;
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9 import dmd.OutBuffer;
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10 import dmd.Loc;
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11 import dmd.Scope;
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12 import dmd.IntRange;
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13 import dmd.IRState;
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14 import dmd.ArrayTypes;
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15 import dmd.BinExp;
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16 import dmd.TOK;
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17 import dmd.TY;
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18 import dmd.Id;
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19
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20 import dmd.backend.elem;
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21 import dmd.backend.OPER;
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22
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23 import dmd.expression.Or;
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24
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25 class OrExp : BinExp
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26 {
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27 this(Loc loc, Expression e1, Expression e2)
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28 {
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29 register();
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30 super(loc, TOK.TOKor, OrExp.sizeof, e1, e2);
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31 }
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33 override Expression semantic(Scope sc)
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34 {
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35 Expression e;
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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 e = op_overload(sc);
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41
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42 if (e)
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43 return e;
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44
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45 if (e1.type.toBasetype().ty == TY.Tbool && e2.type.toBasetype().ty == TY.Tbool)
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46 {
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47 type = e1.type;
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48 e = this;
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49 }
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50 else
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51 {
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52 typeCombine(sc);
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53 if (!e1.isArrayOperand())
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54 e1.checkIntegral();
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55 if (!e2.isArrayOperand())
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56 e2.checkIntegral();
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57 }
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58 }
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59
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60 return this;
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61 }
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63 override Expression optimize(int result)
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64 {
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65 Expression e;
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66
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67 e1 = e1.optimize(result);
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68 e2 = e2.optimize(result);
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69
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70 if (e1.isConst() == 1 && e2.isConst() == 1)
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71 e = Or(type, e1, e2);
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72 else
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73 e = this;
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74
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75 return e;
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76 }
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78 override Expression interpret(InterState istate)
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79 {
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80 return interpretCommon(istate, &Or);
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81 }
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82
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83 override void buildArrayIdent(OutBuffer buf, Expressions arguments)
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84 {
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85 Exp_buildArrayIdent(buf, arguments, "Or");
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86 }
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87
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88 override Expression buildArrayLoop(Parameters fparams)
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89 {
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90 return Exp_buildArrayLoop!(typeof(this))(fparams);
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91 }
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93 override MATCH implicitConvTo(Type t)
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94 {
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95 MATCH result = Expression.implicitConvTo(t);
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96
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97 if (result == MATCH.MATCHnomatch)
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98 {
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99 MATCH m1 = e1.implicitConvTo(t);
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100 MATCH m2 = e2.implicitConvTo(t);
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101
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102 // Pick the worst match
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103 result = (m1 < m2) ? m1 : m2;
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104 }
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105
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106 return result;
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107 }
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108
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109 override IntRange getIntRange()
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110 {
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111 IntRange ir;
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112 IntRange ir1 = e1.getIntRange();
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113 IntRange ir2 = e2.getIntRange();
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114
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115 ir.imin = ir1.imin;
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116 if (ir2.imin < ir.imin)
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117 ir.imin = ir2.imin;
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118
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119 ir.imax = ir1.imax;
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120 if (ir2.imax > ir.imax)
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121 ir.imax = ir2.imax;
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122
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123 ir.imin &= type.sizemask();
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124 ir.imax &= type.sizemask();
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125
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126 //printf("OrExp: imin = x%llx, imax = x%llx\n", ir.imin, ir.imax);
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127 //e1.dump(0);
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128
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129 return ir;
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130 }
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131
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132 override bool isCommutative()
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133 {
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134 return true;
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135 }
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136
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137 override Identifier opId()
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138 {
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139 return Id.ior;
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140 }
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141
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142 override Identifier opId_r()
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143 {
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144 return Id.ior_r;
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145 }
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146
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147 override elem* toElem(IRState* irs)
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148 {
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149 return toElemBin(irs, OPER.OPor);
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150 }
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151 }
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