dakka.base.registration.capabilities source code

1 /*
2  * The MIT License (MIT)
3  *
4  * Copyright (c) 2014 Richard Andrew Cattermole
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to deal
8  * in the Software without restriction, including without limitation the rights
9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in all
14  * copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22  * SOFTWARE.
23  */
24 module dakka.base.registration.capabilities;
25 
26 /**
27  * Capabilities of this node.
28  */
29 
30 private __gshared {
31 	string[] capabilities;
32 }
33 
34 void registerCapability(string name) {
35 	synchronized {
36 		if (hasCapabilities() && hasCapability(name)) return;
37 		
38 		capabilities ~= name;
39 	}
40 }
41 
42 bool hasCapability(string name) {
43 	synchronized {
44 		foreach(c; capabilities) {
45 			if (c == name) return true;
46 		}
47 		
48 		return false;
49 	}
50 }
51 
52 bool hasCapabilities() {
53 	synchronized {
54 		return capabilities.length > 0;
55 	}
56 }
57 
58 string[] getCapabilities() {
59 	return capabilities.dup;
60 }