1 /*
   2  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   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.
   8  *
   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
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_CI_CISYMBOLKLASS_HPP
  26 #define SHARE_VM_CI_CISYMBOLKLASS_HPP
  27 
  28 #include "ci/ciKlass.hpp"
  29 #include "ci/ciSymbol.hpp"
  30 
  31 // ciSymbolKlass
  32 //
  33 // This class represents a klassOop in the HotSpot virtual machine
  34 // whose Klass part in a symbolKlass.  Although, in the VM
  35 // Klass hierarchy, symbolKlass is a direct subclass of typeArrayKlass,
  36 // we do not model this relationship in the ciObject hierarchy -- the
  37 // subclassing is used to share implementation and is not of note
  38 // to compiler writers.
  39 class ciSymbolKlass : public ciKlass {
  40   CI_PACKAGE_ACCESS
  41 
  42 protected:
  43   ciSymbolKlass(KlassHandle h_k)
  44     : ciKlass(h_k, ciSymbol::make("unique_symbolKlass")) {
  45     assert(get_Klass()->oop_is_symbol(), "wrong type");
  46   }
  47 
  48   symbolKlass* get_symbolKlass() { return (symbolKlass*)get_Klass(); }
  49 
  50   const char* type_string() { return "ciSymbolKlass"; }
  51 
  52 public:
  53   // What kind of ciObject is this?
  54   bool is_symbol_klass() { return true; }
  55 
  56   // Return the distinguished ciSymbolKlass instance.
  57   static ciSymbolKlass* make();
  58 };
  59 
  60 #endif // SHARE_VM_CI_CISYMBOLKLASS_HPP