selery.util.tuple source code

1 /*
2  * Copyright (c) 2017-2019 sel-project
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a copy
5  * of this software and associated documentation files (the "Software"), to deal
6  * in the Software without restriction, including without limitation the rights
7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8  * copies of the Software, and to permit persons to whom the Software is
9  * furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in all
12  * copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20  * SOFTWARE.
21  *
22  */
23 /**
24  * Copyright: Copyright (c) 2017-2019 sel-project
25  * License: MIT
26  * Authors: Kripth
27  * Source: $(HTTP github.com/sel-project/selery/source/selery/util/tuple.d, selery/util/tuple.d)
28  */
29 module selery.util.tuple;
30 
31 import std.conv : to;
32 import std.traits : isDynamicArray;
33 
34 struct Tuple(E...) if(E.length % 2 == 0) {
35 
36 	mixin((){
37 		string ret;
38 		foreach(i, T; E) {
39 			static if(i % 2 == 0) {
40 				ret ~= "E[" ~ to!string(i) ~ "] ";
41 			} else {
42 				ret ~= T ~ ";";
43 			}
44 		}
45 		return ret;
46 	}());
47 
48 	static if(E.length == 2) {
49 
50 		static if(isDynamicArray!(E[0]) && is(E[0] == string)) {
51 			mixin("public this(E[0] _...){ this." ~ E[1] ~ "=_; }");
52 		}
53 
54 		mixin("alias " ~ E[1] ~ " this;");
55 
56 	}
57 
58 }