gcc/d/dmd/root/object.h

   1
   2 /* Copyright (C) 1999-2023 by The D Language Foundation, All Rights Reserved
   3  * written by Walter Bright
   4  * https://www.digitalmars.com
   5  * Distributed under the Boost Software License, Version 1.0.
   6  * https://www.boost.org/LICENSE_1_0.txt
   7  * https://github.com/dlang/dmd/blob/master/src/dmd/root/object.h
   8  */
   9
  10 #pragma once
  11
  12 #include "dsystem.h"
  13 #include "dcompat.h"
  14
  15 typedef size_t hash_t;
  16
  17 struct OutBuffer;
  18
  19 enum DYNCAST
  20 {
  21     DYNCAST_OBJECT,
  22     DYNCAST_EXPRESSION,
  23     DYNCAST_DSYMBOL,
  24     DYNCAST_TYPE,
  25     DYNCAST_IDENTIFIER,
  26     DYNCAST_TUPLE,
  27     DYNCAST_PARAMETER,
  28     DYNCAST_STATEMENT,
  29     DYNCAST_CONDITION,
  30     DYNCAST_TEMPLATEPARAMETER,
  31     DYNCAST_INITIALIZER
  32 };
  33
  34 /*
  35  * Root of our class library.
  36  */
  37 class RootObject
  38 {
  39 public:
  40     RootObject() { }
  41
  42     virtual bool equals(const RootObject * const o) const;
  43
  44     /**
  45      * Pretty-print an Object. Useful for debugging the old-fashioned way.
  46      */
  47     virtual const char *toChars() const;
  48     /// This function is `extern(D)` and should not be called from C++,
  49     /// as the ABI does not match on some platforms
  50     virtual DString toString();
  51
  52     /**
  53      * Used as a replacement for dynamic_cast. Returns a unique number
  54      * defined by the library user. For Object, the return value is 0.
  55      */
  56     virtual DYNCAST dyncast() const;
  57 };