dmd.root.rootobject source code

1 /**
2  * Provide the root object that classes in dmd inherit from.
3  *
4  * Copyright: Copyright (C) 1999-2020 by The D Language Foundation, All Rights Reserved
5  * Authors:   Walter Bright, http://www.digitalmars.com
6  * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
7  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/rootobject.d, root/_rootobject.d)
8  * Documentation:  https://dlang.org/phobos/dmd_root_rootobject.html
9  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/rootobject.d
10  */
11 
12 module dmd.root.rootobject;
13 
14 import core.stdc.stdio;
15 
16 import dmd.root.outbuffer;
17 
18 /***********************************************************
19  */
20 
21 enum DYNCAST : int
22 {
23     object,
24     expression,
25     dsymbol,
26     type,
27     identifier,
28     tuple,
29     parameter,
30     statement,
31     condition,
32     templateparameter,
33 }
34 
35 /***********************************************************
36  */
37 
38 extern (C++) class RootObject
39 {
40     this() nothrow pure @nogc @safe
41     {
42     }
43 
44     bool equals(const RootObject o) const
45     {
46         return o is this;
47     }
48 
49     const(char)* toChars() const
50     {
51         assert(0);
52     }
53 
54     ///
55     extern(D) const(char)[] toString() const
56     {
57         import core.stdc..string : strlen;
58         auto p = this.toChars();
59         return p[0 .. strlen(p)];
60     }
61 
62     DYNCAST dyncast() const nothrow pure @nogc @safe
63     {
64         return DYNCAST.object;
65     }
66 }