llvm_hiwrap.util source code

1 /**
2 Copyright: Copyright (c) 2017, Joakim Brännström. All rights reserved.
3 License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0)
4 Author: Joakim Brännström (joakim.brannstrom@gmx.com)
5 */
6 module llvm_hiwrap.util;
7 
8 import llvm_hiwrap.types;
9 
10 immutable(char*)* strToCArray(string[] arr) {
11     import std..string : toStringz;
12 
13     if (arr is null)
14         return null;
15 
16     immutable(char*)[] cArr;
17     cArr.reserve(arr.length);
18 
19     foreach (str; arr)
20         cArr ~= str.toStringz;
21 
22     return cArr.ptr;
23 }
24 
25 /**
26  * Beware, the data is duplicated and thus slightly inefficient.
27  *
28  * Params:
29  *  msg = LLVM message to convert.
30  */
31 string toD(ref LxMessage msg) {
32     return msg.toChar.idup;
33 }
34 
35 /// Create the needed InputRange operation when opIndex is implemented.
36 mixin template IndexedRangeX(T) {
37     private size_t idx;
38 
39     T front() {
40         assert(!empty, "Can't get front of an empty range");
41         return this[idx];
42     }
43 
44     void popFront() {
45         assert(!empty, "Can't pop front of an empty range");
46         idx++;
47     }
48 
49     bool empty() {
50         return idx == length;
51     }
52 }