1 /*
   2  * Copyright (c) 1999, 2019, 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_CI_CIOBJARRAYKLASS_HPP
  26 #define SHARE_CI_CIOBJARRAYKLASS_HPP
  27 
  28 #include "ci/ciArrayKlass.hpp"
  29 
  30 // ciObjArrayKlass
  31 //
  32 // This class represents a Klass* in the HotSpot virtual machine
  33 // whose Klass part is an ObjArrayKlass.
  34 class ciObjArrayKlass : public ciArrayKlass {
  35   CI_PACKAGE_ACCESS
  36   friend class ciEnv;
  37 
  38 private:
  39   ciKlass* _element_klass;
  40   ciKlass* _base_element_klass;
  41 
  42 protected:
  43   ciObjArrayKlass(Klass* k);
  44   ciObjArrayKlass(ciSymbol* array_name,
  45                   ciKlass* base_element_klass,
  46                   int dimension);
  47 
  48   ObjArrayKlass* get_ObjArrayKlass() {
  49     return (ObjArrayKlass*)get_Klass();
  50   }
  51 
  52   static ciObjArrayKlass* make_impl(ciKlass* element_klass, bool never_null);
  53   static ciSymbol* construct_array_name(ciSymbol* element_name,
  54                                         int       dimension);
  55 
  56   const char* type_string() { return "ciObjArrayKlass"; }
  57 
  58   oop     loader()        { return _base_element_klass->loader(); }
  59   jobject loader_handle() { return _base_element_klass->loader_handle(); }
  60 
  61   oop     protection_domain()        { return _base_element_klass->protection_domain(); }
  62   jobject protection_domain_handle() { return _base_element_klass->protection_domain_handle(); }
  63 
  64 
  65 public:
  66   // The one-level type of the array elements.
  67   ciKlass* element_klass();
  68 
  69   // The innermost type of the array elements.
  70   ciKlass* base_element_klass() { return _base_element_klass; }
  71 
  72   // What kind of ciObject is this?
  73   bool is_obj_array_klass() const { return true; }
  74 
  75   static ciObjArrayKlass* make(ciKlass* element_klass, bool never_null = false);
  76 
  77   virtual ciKlass* exact_klass();
  78 
  79   virtual bool can_be_value_array_klass() {
  80     ciKlass* ek = element_klass();
  81     return ek->is_java_lang_Object() || ek->is_interface() || ek->is_valuetype();
  82   }
  83 };
  84 
  85 #endif // SHARE_CI_CIOBJARRAYKLASS_HPP