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1 module dmd.ShlExp;
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2
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3 import dmd.Expression;
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4 import dmd.Identifier;
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5 import dmd.backend.elem;
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6 import dmd.InterState;
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7 import dmd.Loc;
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8 import dmd.Scope;
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9 import dmd.IntRange;
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10 import dmd.IRState;
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11 import dmd.BinExp;
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12 import dmd.TOK;
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13 import dmd.Id;
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14 import dmd.Type;
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15
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16 import dmd.expression.shift_optimize;
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17 import dmd.expression.Shl;
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18
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19 import dmd.backend.OPER;
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20
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21 class ShlExp : BinExp
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22 {
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23 this(Loc loc, Expression e1, Expression e2)
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24 {
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25 super(loc, TOK.TOKshl, ShlExp.sizeof, e1, e2);
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26 }
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27
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28 Expression semantic(Scope sc)
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29 {
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30 Expression e;
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31
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32 //printf("ShlExp.semantic(), type = %p\n", type);
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33 if (!type)
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34 {
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35 BinExp.semanticp(sc);
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36 e = op_overload(sc);
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37
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38 if (e)
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39 return e;
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40
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41 e1 = e1.checkIntegral();
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42 e2 = e2.checkIntegral();
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43 e1 = e1.integralPromotions(sc);
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44 e2 = e2.castTo(sc, Type.tshiftcnt);
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45 type = e1.type;
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46 }
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47
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48 return this;
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49 }
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50
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51 Expression optimize(int result)
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52 {
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53 //printf("ShlExp::optimize(result = %d) %s\n", result, toChars());
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54 return shift_optimize(result, this, &Shl);
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55 }
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56
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57 Expression interpret(InterState* istate)
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58 {
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59 assert(false);
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60 }
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61
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62 IntRange getIntRange()
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63 {
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64 assert(false);
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65 }
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66
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67 Identifier opId()
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68 {
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69 return Id.shl;
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70 }
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71
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72 Identifier opId_r()
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73 {
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74 return Id.shl_r;
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75 }
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76
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77 elem* toElem(IRState* irs)
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78 {
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79 return toElemBin(irs, OPER.OPshl);
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80 }
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81 }
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82
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