duke@435: /*
stefank@2314:  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef SHARE_VM_CI_CIKLASS_HPP
stefank@2314: #define SHARE_VM_CI_CIKLASS_HPP
stefank@2314: 
stefank@2314: #include "ci/ciType.hpp"
stefank@2314: #include "oops/klassOop.hpp"
stefank@2314: 
duke@435: // ciKlass
duke@435: //
duke@435: // This class and its subclasses represent klassOops in the
duke@435: // HotSpot virtual machine.  In the vm, each klassOop contains an
duke@435: // embedded Klass object.  ciKlass is subclassed to explicitly
duke@435: // represent the kind of Klass embedded in the klassOop.  For
duke@435: // example, a klassOop with an embedded objArrayKlass object is
duke@435: // represented in the ciObject hierarchy by the class
duke@435: // ciObjArrayKlass.
duke@435: class ciKlass : public ciType {
duke@435:   CI_PACKAGE_ACCESS
duke@435:   friend class ciEnv;
duke@435:   friend class ciField;
duke@435:   friend class ciMethod;
duke@435:   friend class ciObjArrayKlass;
duke@435: 
duke@435: private:
duke@435:   ciSymbol* _name;
duke@435:   jint _layout_helper;
duke@435: 
duke@435: protected:
duke@435:   ciKlass(KlassHandle k_h, ciSymbol* name);
duke@435:   ciKlass(ciSymbol* name, ciKlass* klass);
duke@435: 
duke@435:   klassOop get_klassOop() const {
duke@435:     klassOop k = (klassOop)get_oop();
duke@435:     assert(k != NULL, "illegal use of unloaded klass");
duke@435:     return k;
duke@435:   }
duke@435: 
duke@435:   Klass*   get_Klass() const { return get_klassOop()->klass_part(); }
duke@435: 
duke@435:   // Certain subklasses have an associated class loader.
duke@435:   virtual oop loader()             { return NULL; }
duke@435:   virtual jobject loader_handle()  { return NULL; }
duke@435: 
duke@435:   virtual oop protection_domain()             { return NULL; }
duke@435:   virtual jobject protection_domain_handle()  { return NULL; }
duke@435: 
duke@435:   const char* type_string() { return "ciKlass"; }
duke@435: 
duke@435:   void print_impl(outputStream* st);
duke@435: 
duke@435: public:
duke@435:   ciKlass(KlassHandle k_h);
duke@435: 
duke@435:   // What is the name of this klass?
twisti@1573:   ciSymbol* name() const { return _name; }
duke@435: 
duke@435:   // What is its layout helper value?
duke@435:   jint layout_helper() { return _layout_helper; }
duke@435: 
duke@435:   bool is_subtype_of(ciKlass* klass);
duke@435:   bool is_subclass_of(ciKlass* klass);
duke@435:   juint super_depth();
duke@435:   juint super_check_offset();
duke@435:   ciKlass* super_of_depth(juint i);
duke@435:   bool can_be_primary_super();
duke@435:   static juint primary_super_limit() { return Klass::primary_super_limit(); }
duke@435: 
duke@435:   // Get the shared parent of two klasses.
duke@435:   ciKlass* least_common_ancestor(ciKlass* k);
duke@435: 
duke@435:   virtual bool is_interface() {
duke@435:     return false;
duke@435:   }
duke@435: 
duke@435:   virtual bool is_abstract() {
duke@435:     return false;
duke@435:   }
duke@435: 
duke@435:   // Does this type (array, class, interface) have no subtypes?
duke@435:   virtual bool is_leaf_type() {
duke@435:     return false;
duke@435:   }
duke@435: 
duke@435:   // Attempt to get a klass using this ciKlass's loader.
duke@435:   ciKlass* find_klass(ciSymbol* klass_name);
duke@435:   // Note:  To find a class from its name string, use ciSymbol::make,
duke@435:   // but consider adding to vmSymbols.hpp instead.
duke@435: 
duke@435:   // Get the instance of java.lang.Class corresponding to this klass.
duke@435:   ciInstance*            java_mirror();
duke@435: 
duke@435:   // Fetch Klass::modifier_flags.
duke@435:   jint                   modifier_flags();
duke@435: 
duke@435:   // Fetch Klass::access_flags.
duke@435:   jint                   access_flags();
duke@435: 
duke@435:   // What kind of ciObject is this?
duke@435:   bool is_klass() { return true; }
duke@435: 
duke@435:   void print_name_on(outputStream* st);
duke@435: };
stefank@2314: 
stefank@2314: #endif // SHARE_VM_CI_CIKLASS_HPP