annotate dmd/NotExp.d @ 187:b0d41ff5e0df

Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
author Abscissa
date Tue, 07 Jun 2011 23:37:34 -0400
parents e3afd1303184
children 52188e7e3fb5
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1 module dmd.NotExp;
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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.backend.elem;
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6 import dmd.UnaExp;
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7 import dmd.InterState;
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8 import dmd.Loc;
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9 import dmd.Scope;
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10 import dmd.IRState;
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11 import dmd.TOK;
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12 import dmd.Type;
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13
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14 import dmd.expression.Not;
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15
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16 import dmd.backend.OPER;
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17 import dmd.backend.Util;
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18
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19 import dmd.DDMDExtensions;
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20
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21 class NotExp : UnaExp
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22 {
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23 mixin insertMemberExtension!(typeof(this));
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24
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25 this(Loc loc, Expression e)
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26 {
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27 register();
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28 super(loc, TOK.TOKnot, NotExp.sizeof, e);
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29 }
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31 override Expression semantic(Scope sc)
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32 {
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33 UnaExp.semantic(sc);
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34 e1 = resolveProperties(sc, e1);
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35 e1 = e1.checkToBoolean();
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36 type = Type.tboolean;
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37 return this;
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38 }
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39
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40 override Expression optimize(int result)
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41 {
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42 Expression e;
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43
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44 e1 = e1.optimize(result);
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45 if (e1.isConst() == 1)
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46 e = Not(type, e1);
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47 else
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48 e = this;
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49
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50 return e;
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51 }
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53 override Expression interpret(InterState istate)
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54 {
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55 assert(false);
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56 }
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57
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58 override int isBit()
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59 {
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60 assert(false);
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61 }
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63 override elem* toElem(IRState* irs)
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64 {
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65 elem* e = el_una(OPnot, type.totym(), e1.toElem(irs));
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66 el_setLoc(e,loc);
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67 return e;
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68 }
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69 }