annotate dmd/UshrAssignExp.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
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 module dmd.UshrAssignExp;
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2
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3 import dmd.common;
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4 import dmd.BinExp;
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5 import dmd.Loc;
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6 import dmd.Expression;
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7 import dmd.Scope;
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8 import dmd.InterState;
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9 import dmd.Identifier;
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10 import dmd.IRState;
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11 import dmd.Id;
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12 import dmd.TOK;
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13 import dmd.Type;
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14 import dmd.ArrayLengthExp;
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15 import dmd.backend.elem;
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16 import dmd.expression.Ushr;
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17 import dmd.expression.Util;
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18
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19 import dmd.backend.OPER;
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20
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21 import dmd.DDMDExtensions;
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22
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23 class UshrAssignExp : BinExp
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24 {
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25 mixin insertMemberExtension!(typeof(this));
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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.TOKushrass, UshrAssignExp.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 BinExp.semantic(sc);
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38 e2 = resolveProperties(sc, e2);
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39
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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 if (e1.op == TOK.TOKarraylength)
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45 {
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46 e = ArrayLengthExp.rewriteOpAssign(this);
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47 e = e.semantic(sc);
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48 return e;
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49 }
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50
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51 e1 = e1.modifiableLvalue(sc, e1);
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52 e1.checkScalar();
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53 e1.checkNoBool();
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54 type = e1.type;
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55 typeCombine(sc);
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56 e1.checkIntegral();
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57 e2 = e2.checkIntegral();
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58 e2 = e2.castTo(sc, Type.tshiftcnt);
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59 return this;
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60 }
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62 override Expression interpret(InterState istate)
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63 {
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64 return interpretAssignCommon(istate, &Ushr);
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65 }
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66
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67 override Identifier opId() /* For operator overloading */
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68 {
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69 return Id.ushrass;
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70 }
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71
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72 override elem* toElem(IRState* irs)
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73 {
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74 return toElemBin(irs, OPER.OPshrass);
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75 }
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76 }