dplug.core.traits source code

1 /// Simple version of traits from std.traits, for the purpose of faster compile times.
2 module dplug.core.traits;
3 
4 // Like `Unqual` but does not remove "shared" or "inout"
5 template RemoveConst(T)
6 {    
7     static if (is(T U == immutable U)) 
8         alias Unqual = U;
9     else static if (is(T U == const U)) 
10         alias Unqual = U;
11     else 
12         alias Unqual = T;
13 }
14 
15 // faster isIntegral, does not Unqual
16 template isBuiltinIntegral(T)
17 {
18     static if (is(T == int) || is(T == uint) 
19              ||is(T == byte) || is(T == ubyte)
20              ||is(T == short) || is(T == ushort)
21              ||is(T == long) || is(T == ulong))
22         enum bool isBuiltinIntegral = true;
23     else
24         enum bool isBuiltinIntegral = false;
25 }
26 
27 // faster isSigned, does not Unqual
28 template isSignedIntegral(T)
29 {
30     enum isSignedIntegral = (is(T == int) || is(T == byte) || is(T == short) || is(T == long));
31 }
32 
33 // faster isUnsigned, does not Unqual
34 template isUnsignedIntegral(T)
35 {
36     enum isUnsignedIntegral = (is(T == uint) || is(T == ubyte) || is(T == ushort) || is(T == ulong));
37 }
38 
39 template UnsignedToSigned(T)
40 {
41     static if (is(T == uint))
42         alias UnsignedToSigned = int;
43     else static if (is(T == ushort))
44         alias UnsignedToSigned = short;
45     else static if (is(T == ubyte))
46         alias UnsignedToSigned = byte;
47     else static if (is(T == ulong))
48         alias UnsignedToSigned = long;
49     else
50         static assert(false);
51 }