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1 module dmd.StaticIfCondition;
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2
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3 import dmd.Expression;
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4 import dmd.ScopeDsymbol;
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5 import dmd.OutBuffer;
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6 import dmd.Loc;
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7 import dmd.Scope;
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8 import dmd.Condition;
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9 import dmd.HdrGenState;
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10 import dmd.WANT;
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11 import dmd.Util;
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12
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13 class StaticIfCondition : Condition
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14 {
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15 Expression exp;
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16
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17 this(Loc loc, Expression exp)
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18 {
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19 super(loc);
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20 this.exp = exp;
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21 }
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22
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23 Condition syntaxCopy()
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24 {
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25 assert(false);
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26 }
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27
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28 bool include(Scope sc, ScopeDsymbol s)
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29 {
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30 static if (false) {
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31 printf("StaticIfCondition.include(sc = %p, s = %p)\n", sc, s);
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32 if (s)
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33 {
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34 printf("\ts = '%s', kind = %s\n", s.toChars(), s.kind());
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35 }
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36 }
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37 if (inc == 0)
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38 {
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39 if (!sc)
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40 {
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41 error(loc, "static if conditional cannot be at global scope");
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42 inc = 2;
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43 return 0;
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44 }
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45
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46 sc = sc.push(sc.scopesym);
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47 sc.sd = s; // s gets any addMember()
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48 sc.flags |= SCOPE.SCOPEstaticif;
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49 Expression e = exp.semantic(sc);
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50 sc.pop();
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51 e = e.optimize(WANTvalue | WANTinterpret);
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52 if (e.isBool(true))
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53 inc = 1;
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54 else if (e.isBool(false))
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55 inc = 2;
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56 else
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57 {
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58 e.error("expression %s is not constant or does not evaluate to a bool", e.toChars());
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59 inc = 2;
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60 }
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61 }
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62 return (inc == 1);
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63 }
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64
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65 void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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66 {
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67 assert(false);
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68 }
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69 }
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70
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