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annotate dmd/DsymbolTable.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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b0d41ff5e0df Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
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1 module dmd.DsymbolTable;
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3 import dmd.common;
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4 import dmd.StringTable;
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5 import dmd.Dsymbol;
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6 import dmd.Identifier;
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7 import dmd.StringValue;
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8
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9 import std.stdio;
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11 import dmd.TObject;
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13 import dmd.DDMDExtensions;
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15 class DsymbolTable : TObject
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16 {
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17 mixin insertMemberExtension!(typeof(this));
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19 StringTable tab;
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21 this()
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22 {
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23 register();
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24 }
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26 // Look up Identifier. Return Dsymbol if found, NULL if not.
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27 Dsymbol lookup(Identifier ident)
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28 {
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29 debug {
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30 assert(ident);
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31 }
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32 Object* sv = tab.lookup(ident.string_);
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33 return (sv ? cast(Dsymbol)*sv : null);
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34 }
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36 // Insert Dsymbol in table. Return NULL if already there.
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37 Dsymbol insert(Dsymbol s)
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38 {
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39 Identifier ident = s.ident;
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40 debug {
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41 assert(ident);
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42 }
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43
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44 return insert(ident, s);
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45 }
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47 // Look for Dsymbol in table. If there, return it. If not, insert s and return that.
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48 Dsymbol update(Dsymbol s)
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49 {
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50 assert(false);
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51 }
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52
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53 Dsymbol insert(Identifier ident, Dsymbol s) // when ident and s are not the same
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54 {
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55 Object* sv = tab.insert(ident.toChars());
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56 if (sv is null) {
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57 return null; // already in table
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58 }
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59
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60 *sv = s;
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61 return s;
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62 }
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63 }