gcc/d/dmd/root/rootobject.d

   1 /**
   2  * Provide the root object that classes in dmd inherit from.
   3  *
   4  * Copyright: Copyright (C) 1999-2021 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.common.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     initializer,
  34 }
  35
  36 /***********************************************************
  37  */
  38
  39 extern (C++) class RootObject
  40 {
  41     this() nothrow pure @nogc @safe
  42     {
  43     }
  44
  45     bool equals(const RootObject o) const
  46     {
  47         return o is this;
  48     }
  49
  50     const(char)* toChars() const
  51     {
  52         assert(0);
  53     }
  54
  55     ///
  56     extern(D) const(char)[] toString() const
  57     {
  58         import core.stdc.string : strlen;
  59         auto p = this.toChars();
  60         return p[0 .. strlen(p)];
  61     }
  62
  63     DYNCAST dyncast() const nothrow pure @nogc @safe
  64     {
  65         return DYNCAST.object;
  66     }
  67 }