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1 module dmd.DsymbolTable;
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2
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114
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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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10
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11 class DsymbolTable
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12 {
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13 StringTable tab;
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14
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15 this()
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16 {
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17 tab = new StringTable;
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18 }
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19
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20 ~this()
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21 {
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22 }
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23
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24 // Look up Identifier. Return Dsymbol if found, NULL if not.
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25 Dsymbol lookup(Identifier ident)
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26 {
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27 debug {
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28 assert(ident);
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29 assert(tab);
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30 }
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31 StringValue* sv = tab.lookup(ident.string_);
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32 return (sv ? cast(Dsymbol)sv.ptrvalue : null);
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33 }
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34
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35 // Insert Dsymbol in table. Return NULL if already there.
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36 Dsymbol insert(Dsymbol s)
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37 {
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38 Identifier ident = s.ident;
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39 debug {
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40 assert(ident);
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41 assert(tab);
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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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46
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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 StringValue* 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.ptrvalue = cast(void*)s;
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61 return s;
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62 }
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63 } |
