1 /*
   2  * Copyright (c) 1999, 2001, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  24 
  25 // ciSymbolKlass
  26 //
  27 // This class represents a klassOop in the HotSpot virtual machine
  28 // whose Klass part in a symbolKlass.  Although, in the VM
  29 // Klass hierarchy, symbolKlass is a direct subclass of typeArrayKlass,
  30 // we do not model this relationship in the ciObject hierarchy -- the
  31 // subclassing is used to share implementation and is not of note
  32 // to compiler writers.
  33 class ciSymbolKlass : public ciKlass {
  34   CI_PACKAGE_ACCESS
  35 
  36 protected:
  37   ciSymbolKlass(KlassHandle h_k)
  38     : ciKlass(h_k, ciSymbol::make("unique_symbolKlass")) {
  39     assert(get_Klass()->oop_is_symbol(), "wrong type");
  40   }
  41 
  42   symbolKlass* get_symbolKlass() { return (symbolKlass*)get_Klass(); }
  43 
  44   const char* type_string() { return "ciSymbolKlass"; }
  45 
  46 public:
  47   // What kind of ciObject is this?
  48   bool is_symbol_klass() { return true; }
  49 
  50   // Return the distinguished ciSymbolKlass instance.
  51   static ciSymbolKlass* make();
  52 };