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annotate dmd/XorExp.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 9e39c7de8438
children e3afd1303184
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1 module dmd.XorExp;
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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.Id;
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9 import dmd.Type;
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10 import dmd.OutBuffer;
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11 import dmd.Loc;
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12 import dmd.Scope;
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13 import dmd.IntRange;
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14 import dmd.IRState;
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15 import dmd.ArrayTypes;
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16 import dmd.BinExp;
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17 import dmd.TOK;
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18 import dmd.TY;
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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 import dmd.expression.Util;
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23 import dmd.expression.Xor;
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24
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25 class XorExp : 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 super(loc, TOK.TOKxor, XorExp.sizeof, e1, e2);
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30 }
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32 override Expression semantic(Scope sc)
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33 {
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34 Expression e;
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35
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36 if (!type)
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37 {
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38 BinExp.semanticp(sc);
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39 e = op_overload(sc);
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40 if (e)
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41 return e;
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42 if (e1.type.toBasetype().ty == Tbool &&
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43 e2.type.toBasetype().ty == Tbool)
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44 {
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45 type = e1.type;
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46 e = this;
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47 }
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48 else
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49 {
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50 typeCombine(sc);
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51 if (!e1.isArrayOperand())
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52 e1.checkIntegral();
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53 if (!e2.isArrayOperand())
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54 e2.checkIntegral();
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55 }
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56 }
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57 return this;
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58 }
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60 override Expression optimize(int result)
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61 {
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62 Expression e;
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63
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64 e1 = e1.optimize(result);
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65 e2 = e2.optimize(result);
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66 if (e1.isConst() == 1 && e2.isConst() == 1)
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67 e = Xor(type, e1, e2);
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68 else
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69 e = this;
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70
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71 return e;
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72 }
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74 override Expression interpret(InterState istate)
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75 {
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76 return interpretCommon(istate, &Xor);
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77 }
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79 override void buildArrayIdent(OutBuffer buf, Expressions arguments)
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80 {
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81 Exp_buildArrayIdent(buf, arguments, "Xor");
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82 }
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83
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84 override Expression buildArrayLoop(Parameters fparams)
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85 {
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86 return Exp_buildArrayLoop!(typeof(this))(fparams);
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87 }
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89 override MATCH implicitConvTo(Type t)
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90 {
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91 MATCH result = Expression.implicitConvTo(t);
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92
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93 if (result == MATCHnomatch)
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94 {
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95 MATCH m1 = e1.implicitConvTo(t);
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96 MATCH m2 = e2.implicitConvTo(t);
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98 // Pick the worst match
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99 result = (m1 < m2) ? m1 : m2;
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100 }
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101 return result;
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102 }
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104 override IntRange getIntRange()
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105 {
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106 assert(false);
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107 }
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108
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109 override bool isCommutative()
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110 {
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111 return true;
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112 }
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114 override Identifier opId()
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115 {
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116 return Id.ixor;
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117 }
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119 override Identifier opId_r()
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120 {
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121 return Id.ixor_r;
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122 }
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124 override elem* toElem(IRState* irs)
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125 {
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126 return toElemBin(irs,OPxor);
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127 }
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128 }
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