|
0
|
1 module dmd.expression.Shr;
|
|
|
2
|
|
|
3 import dmd.Expression;
|
|
|
4 import dmd.Type;
|
|
|
5 import dmd.Loc;
|
|
|
6 import dmd.IntegerExp;
|
|
|
7 import dmd.TY;
|
|
|
8
|
|
|
9 Expression Shr(Type type, Expression e1, Expression e2)
|
|
|
10 {
|
|
|
11 Loc loc = e1.loc;
|
|
|
12
|
|
|
13 long value = e1.toInteger();
|
|
|
14 uint count = cast(uint)e2.toInteger();
|
|
|
15
|
|
|
16 switch (e1.type.toBasetype().ty)
|
|
|
17 {
|
|
|
18 case TY.Tint8:
|
|
|
19 value = cast(byte)(value) >> count;
|
|
|
20 break;
|
|
|
21
|
|
|
22 case TY.Tuns8:
|
|
|
23 value = cast(ubyte)(value) >> count;
|
|
|
24 break;
|
|
|
25
|
|
|
26 case TY.Tint16:
|
|
|
27 value = cast(short)(value) >> count;
|
|
|
28 break;
|
|
|
29
|
|
|
30 case TY.Tuns16:
|
|
|
31 value = cast(ushort)(value) >> count;
|
|
|
32 break;
|
|
|
33
|
|
|
34 case TY.Tint32:
|
|
|
35 value = cast(int)(value) >> count;
|
|
|
36 break;
|
|
|
37
|
|
|
38 case TY.Tuns32:
|
|
|
39 value = cast(uint)(value) >> count;
|
|
|
40 break;
|
|
|
41
|
|
|
42 case TY.Tint64:
|
|
|
43 value = cast(long)(value) >> count;
|
|
|
44 break;
|
|
|
45
|
|
|
46 case TY.Tuns64:
|
|
|
47 value = cast(ulong)(value) >> count;
|
|
|
48 break;
|
|
|
49 }
|
|
|
50
|
|
|
51 return new IntegerExp(loc, value, type);
|
|
|
52 } |
