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annotate dmd/NegExp.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.NegExp;
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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.UnaExp;
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8 import dmd.InterState;
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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.IRState;
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13 import dmd.ArrayTypes;
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14 import dmd.TOK;
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15 import dmd.Id;
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16
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17 import dmd.expression.Neg;
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18
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19 import dmd.backend.Util;
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20 import dmd.backend.OPER;
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21
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22 class NegExp : UnaExp
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23 {
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24 this(Loc loc, Expression e)
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25 {
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26 super(loc, TOKneg, NegExp.sizeof, e);
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27 }
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29 override Expression semantic(Scope sc)
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30 {
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31 Expression e;
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32
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33 version (LOGSEMANTIC) {
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34 printf("NegExp::semantic('%s')\n", toChars());
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35 }
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36 if (!type)
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37 {
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38 UnaExp.semantic(sc);
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39 e1 = resolveProperties(sc, e1);
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40 e = op_overload(sc);
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41 if (e)
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42 return e;
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43
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44 e1.checkNoBool();
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45 if (!e1.isArrayOperand())
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46 e1.checkArithmetic();
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47
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48 type = e1.type;
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49 }
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50 return this;
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51 }
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52
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53 override Expression optimize(int result)
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54 {
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55 Expression e;
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56
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57 e1 = e1.optimize(result);
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58 if (e1.isConst() == 1)
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59 {
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60 e = Neg(type, e1);
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61 }
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62 else
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63 e = this;
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64
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65 return e;
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66 }
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67
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68 override Expression interpret(InterState istate)
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69 {
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70 assert(false);
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71 }
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73 override void buildArrayIdent(OutBuffer buf, Expressions arguments)
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74 {
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75 e1.buildArrayIdent(buf, arguments);
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76 buf.writestring("Neg");
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77 }
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79 override Expression buildArrayLoop(Parameters fparams)
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80 {
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81 Expression ex1 = e1.buildArrayLoop(fparams);
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82 Expression e = new NegExp(Loc(0), ex1);
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83 return e;
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84 }
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86 override Identifier opId()
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87 {
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88 return Id.neg;
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89 }
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91 override elem* toElem(IRState* irs)
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92 {
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93 elem *e = el_una(OPneg, type.totym(), e1.toElem(irs));
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94 el_setLoc(e,loc);
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95 return e;
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96 }
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97 }
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