dmd.rootobject source code

1 /**
2  * Provide the root object that AST classes in dmd inherit from.
3  *
4  * Copyright: Copyright (C) 1999-2023 by The D Language Foundation, All Rights Reserved
5  * Authors:   Walter Bright, https://www.digitalmars.com
6  * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
7  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/rootobject.d, _rootobject.d)
8  * Documentation:  https://dlang.org/phobos/dmd_rootobject.html
9  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/rootobject.d
10  */
11 
12 module dmd.rootobject;
13 
14 /***********************************************************
15  */
16 
17 enum DYNCAST : int
18 {
19     object,
20     expression,
21     dsymbol,
22     type,
23     identifier,
24     tuple,
25     parameter,
26     statement,
27     condition,
28     templateparameter,
29     initializer,
30 }
31 
32 /***********************************************************
33  */
34 
35 extern (C++) class RootObject
36 {
37     this() nothrow pure @nogc @safe scope
38     {
39     }
40 
41     bool equals(const RootObject o) const
42     {
43         return o is this;
44     }
45 
46     const(char)* toChars() const
47     {
48         assert(0);
49     }
50 
51     ///
52     extern(D) const(char)[] toString() const
53     {
54         import core.stdc.string : strlen;
55         auto p = this.toChars();
56         return p[0 .. strlen(p)];
57     }
58 
59     DYNCAST dyncast() const nothrow pure @nogc @safe
60     {
61         return DYNCAST.object;
62     }
63 }