1 // Written in the D programming language.
2
3 /**
4 * Information about the target operating system, environment, and CPU.
5 *
6 * Copyright: Copyright The D Language Foundation 2000 - 2011
7 * License: $(HTTP www.boost.org/LICENSE_1_0.txt, Boost License 1.0).
8 * Authors: $(HTTP digitalmars.com, Walter Bright) and
9 $(HTTP jmdavisprog.com, Jonathan M Davis)
10 * Source: $(PHOBOSSRC std/system.d)
11 */
12 module std.system;
13
14 immutable
15 {
16 /++
17 Operating system.
18
19 Note:
20 This is for cases where you need a value representing the OS at
21 runtime. If you're doing something which should compile differently
22 on different OSes, then please use `version (Windows)`,
23 `version (linux)`, etc.
24
25 See_Also:
26 $(DDSUBLINK spec/version,PredefinedVersions, Predefined Versions)
27 +/
28 enum OS
29 {
30 win32 = 1, /// Microsoft 32 bit Windows systems
31 win64, /// Microsoft 64 bit Windows systems
32 linux, /// All Linux Systems, except for Android
33 osx, /// Mac OS X
34 iOS, /// iOS
35 tvOS, /// tvOS
36 watchOS, /// watchOS
37 freeBSD, /// FreeBSD
38 netBSD, /// NetBSD
39 dragonFlyBSD, /// DragonFlyBSD
40 solaris, /// Solaris
41 android, /// Android
42 otherPosix /// Other Posix Systems
43 }
44
45 /// The OS that the program was compiled for.
46 version (Win32) OS os = OS.win32;
47 else version (Win64) OS os = OS.win64;
48 else version (Android) OS os = OS.android;
49 else version (linux) OS os = OS.linux;
50 else version (OSX) OS os = OS.osx;
51 else version (iOS) OS os = OS.iOS;
52 else version (tvOS) OS os = OS.tvOS;
53 else version (watchOS) OS os = OS.watchOS;
54 else version (FreeBSD) OS os = OS.freeBSD;
55 else version (NetBSD) OS os = OS.netBSD;
56 else version (DragonFlyBSD) OS os = OS.dragonFlyBSD;
57 else version (Posix) OS os = OS.otherPosix;
58 else static assert(0, "Unknown OS.");
59
60 /++
61 Byte order endianness.
62
63 Note:
64 This is intended for cases where you need to deal with endianness at
65 runtime. If you're doing something which should compile differently
66 depending on whether you're compiling on a big endian or little
67 endian machine, then please use `version (BigEndian)` and
68 `version (LittleEndian)`.
69
70 See_Also:
71 $(DDSUBLINK spec/version,PredefinedVersions, Predefined Versions)
72 +/
73 enum Endian
74 {
75 bigEndian, /// Big endian byte order
76 littleEndian /// Little endian byte order
77 }
78
79 /// The endianness that the program was compiled for.
80 version (LittleEndian) Endian endian = Endian.littleEndian;
81 else Endian endian = Endian.bigEndian;
82 }
83
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