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annotate dmd/AliasThis.d @ 178:e3afd1303184

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Many small bugs fixed Made all classes derive from TObject to detect memory leaks (functionality is disabled for now) Began work on overriding backend memory allocations (to avoid memory leaks)
author korDen
date Sun, 17 Oct 2010 07:42:00 +0400
parents e28b18c23469
children b0d41ff5e0df
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1 module dmd.AliasThis;
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2
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3 import dmd.common;
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4 import dmd.Dsymbol;
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5 import dmd.Identifier;
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6 import dmd.Loc;
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7 import dmd.Scope;
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8 import dmd.OutBuffer;
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9 import dmd.HdrGenState;
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10 import dmd.AggregateDeclaration;
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11
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12 class AliasThis : Dsymbol
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13 {
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14 // alias Identifier this;
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15 Identifier ident;
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16
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17 this(Loc loc, Identifier ident)
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18 {
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19 register();
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20 super(null); // it's anonymous (no identifier)
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21 this.loc = loc;
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22 this.ident = ident;
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23 }
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24
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25 override Dsymbol syntaxCopy(Dsymbol s)
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26 {
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27 assert(!s);
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28 /* Since there is no semantic information stored here,
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29 * we don't need to copy it.
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30 */
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31 return this;
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32 }
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33
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34 override void semantic(Scope sc)
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35 {
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36 Dsymbol parent = sc.parent;
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37 if (parent)
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38 parent = parent.pastMixin();
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39 AggregateDeclaration ad = null;
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40 if (parent)
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41 ad = parent.isAggregateDeclaration();
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42 if (ad)
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43 {
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44 if (ad.aliasthis)
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45 error("there can be only one alias this");
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46 assert(ad.members);
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47 Dsymbol s = ad.search(loc, ident, 0);
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48 ad.aliasthis = s;
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49 }
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50 else
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51 error("alias this can only appear in struct or class declaration, not %s", parent ? parent.toChars() : "nowhere");
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52 }
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53
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54 override string kind()
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55 {
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56 assert(false);
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57 }
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58
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59 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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60 {
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61 assert(false);
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62 }
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64 AliasThis isAliasThis() { return this; }
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65 }