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annotate dmd/HaltExp.d @ 187:b0d41ff5e0df

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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
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1 module dmd.HaltExp;
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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.OutBuffer;
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7 import dmd.Loc;
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8 import dmd.Scope;
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9 import dmd.IRState;
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10 import dmd.Type;
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11 import dmd.HdrGenState;
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12 import dmd.Loc;
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13 import dmd.TOK;
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14
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15 import dmd.backend.Util;
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16 import dmd.backend.OPER;
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17 import dmd.backend.TYM;
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18
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19 import dmd.DDMDExtensions;
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20
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21 class HaltExp : Expression
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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)
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26 {
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27 register();
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28 super(loc, TOK.TOKhalt, HaltExp.sizeof);
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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 version (LOGSEMANTIC) {
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34 printf("HaltExp.semantic()\n");
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35 }
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36 type = Type.tvoid;
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37 return this;
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38 }
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39
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40 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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41 {
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42 buf.writestring("halt");
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43 }
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44
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45 override bool checkSideEffect(int flag)
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46 {
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47 return true;
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48 }
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49
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50 override elem* toElem(IRState* irs)
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51 {
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52 elem *e;
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53
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54 e = el_calloc();
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55 e.Ety = TYvoid;
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56 e.Eoper = OPhalt;
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57 el_setLoc(e,loc);
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58 return e;
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59 }
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60 }
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