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annotate dmd/VoidInitializer.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.VoidInitializer;
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2
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3 import dmd.common;
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4 import dmd.Initializer;
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5 import dmd.Type;
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6 import dmd.Loc;
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7 import dmd.Scope;
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8 import dmd.Expression;
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9 import dmd.OutBuffer;
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10 import dmd.HdrGenState;
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12 import dmd.backend.dt_t;
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13 import dmd.backend.Util;
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14
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15 import dmd.DDMDExtensions;
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16
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17 class VoidInitializer : Initializer
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18 {
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19 mixin insertMemberExtension!(typeof(this));
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20
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21 Type type = null; // type that this will initialize to
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22
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23 this(Loc loc)
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24 {
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25 register();
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26 super(loc);
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27 }
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29 override Initializer syntaxCopy()
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30 {
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31 return new VoidInitializer(loc);
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32 }
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34 override Initializer semantic(Scope sc, Type t)
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35 {
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36 //printf("VoidInitializer.semantic(t = %p)\n", t);
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37 type = t;
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38 return this;
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39 }
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41 override Expression toExpression()
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42 {
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43 assert(false);
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44 }
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45
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46 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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47 {
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48 buf.writestring("void");
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49 }
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50
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51 override dt_t* toDt()
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52 {
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53 /* Void initializers are set to 0, just because we need something
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54 * to set them to in the static data segment.
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55 */
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56 dt_t *dt = null;
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57
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58 dtnzeros(&dt, cast(uint)type.size());
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59 return dt;
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60 }
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62 override VoidInitializer isVoidInitializer() { return this; }
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63 }