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
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24 
25 #ifndef SHARE_CI_CIARRAYKLASS_HPP
26 #define SHARE_CI_CIARRAYKLASS_HPP
27 
28 #include "ci/ciKlass.hpp"
29 
30 // ciArrayKlass
31 //
32 // This class, and its subclasses represent Klass*s in the
33 // HotSpot virtual machine whose Klass part is an ArrayKlass.
34 class ciArrayKlass : public ciKlass {
35   CI_PACKAGE_ACCESS
36 private:
37   jint _dimension;
38 
39 protected:
40   ciArrayKlass(Klass* k);
41   ciArrayKlass(ciSymbol* name, int dimension, BasicType bt);
42 
43   ArrayKlass* get_ArrayKlass() {
44     return (ArrayKlass*)get_Klass();
45   }
46 
47   const char* type_string() { return "ciArrayKlass"; }
48 
49 public:
50   jint dimension() { return _dimension; }
51   ciType* element_type();       // JLS calls this the "component type"
52   ciType* base_element_type();  // JLS calls this the "element type"
53   bool is_leaf_type();          // No subtypes of this array type.
54 
55   // What kind of vmObject is this?
56   bool is_array_klass() const { return true; }
57   bool is_java_klass() const  { return true; }
58 
59   // The one-level type of the array elements.
60   virtual ciKlass* element_klass() { return NULL; }
61 
62   static ciArrayKlass* make(ciType* klass, bool null_free = false);
63 
64   int array_header_in_bytes();
65   ciInstance* component_mirror_instance() const;
66 
67   virtual bool is_elem_null_free() const { return false; }
68 };
69 
70 #endif // SHARE_CI_CIARRAYKLASS_HPP