mutils.meta source code

1 module mutils.meta;
2 
3 import std.meta;
4 import std.traits;
5 
6 template removeEven(Arr...) {
7 	static if (Arr.length > 2) {
8 		alias removeEven = AliasSeq!(Arr[1], removeEven!(Arr[2 .. $]));
9 	} else static if (Arr.length == 2) {
10 		alias removeEven = AliasSeq!(Arr[1]);
11 	} else {
12 		alias removeEven = AliasSeq!();
13 	}
14 }
15 
16 unittest {
17 	static assert(is(removeEven!(int, float, long) == AliasSeq!(float)));
18 	static assert(is(removeEven!(int, float, long, float) == AliasSeq!(float, float)));
19 }
20 
21 template removeOdd(Arr...) {
22 	static if (Arr.length > 2) {
23 		alias removeOdd = AliasSeq!(Arr[0], removeOdd!(Arr[2 .. $]));
24 	} else static if (Arr.length == 2) {
25 		alias removeOdd = AliasSeq!(Arr[0]);
26 	} else {
27 		alias removeOdd = Arr;
28 	}
29 }
30 
31 unittest {
32 	static assert(is(removeOdd!(int, float) == AliasSeq!(int)));
33 	static assert(is(removeOdd!(int, float, long) == AliasSeq!(int, long)));
34 }
35 
36 template getType(alias T) {
37 	alias getType = typeof(T);
38 }
39 
40 unittest {
41 	static assert(is(getType!(6) == int));
42 }
43 
44 string[] getBasicVariablesFullNames(T)(string begin) {
45 	string[] fullNames;
46 
47 	alias fields = Fields!T;
48 	alias names = FieldNameTuple!T;
49 	foreach (i, name; names) {
50 		static if (is(fields[i] == struct)) {
51 			fullNames ~= getBasicVariablesFullNames!(fields[i])(begin ~ "." ~ name);
52 		} else {
53 			fullNames ~= begin ~ "." ~ name;
54 		}
55 	}
56 	return fullNames;
57 }