1 /*
2 * Copyright (c) 1999, 2023, 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 #include "precompiled.hpp"
26 #include "ci/ciArrayKlass.hpp"
27 #include "ci/ciObjArrayKlass.hpp"
28 #include "ci/ciTypeArrayKlass.hpp"
29 #include "ci/ciUtilities.inline.hpp"
30 #include "memory/universe.hpp"
31
32 // ciArrayKlass
33 //
34 // This class represents a Klass* in the HotSpot virtual machine
35 // whose Klass part in an ArrayKlass.
36
37 // ------------------------------------------------------------------
38 // ciArrayKlass::ciArrayKlass
39 //
40 // Loaded array klass.
41 ciArrayKlass::ciArrayKlass(Klass* k) : ciKlass(k) {
42 assert(get_Klass()->is_array_klass(), "wrong type");
43 _dimension = get_ArrayKlass()->dimension();
44 }
45
46 // ------------------------------------------------------------------
47 // ciArrayKlass::ciArrayKlass
48 //
49 // Unloaded array klass.
50 ciArrayKlass::ciArrayKlass(ciSymbol* name, int dimension, BasicType bt)
51 : ciKlass(name, bt) {
52 _dimension = dimension;
53 }
54
55 // ------------------------------------------------------------------
56 // ciArrayKlass::element_type
57 //
58 // What type is obtained when this array is indexed once?
59 ciType* ciArrayKlass::element_type() {
60 if (is_type_array_klass()) {
61 return ciType::make(as_type_array_klass()->element_type());
62 } else {
63 return as_obj_array_klass()->element_klass()->as_klass();
64 }
65 }
66
67
68 // ------------------------------------------------------------------
69 // ciArrayKlass::base_element_type
70 //
71 // What type is obtained when this array is indexed as many times as possible?
72 ciType* ciArrayKlass::base_element_type() {
73 if (is_type_array_klass()) {
74 return ciType::make(as_type_array_klass()->element_type());
75 } else {
76 ciKlass* ek = as_obj_array_klass()->base_element_klass();
77 if (ek->is_type_array_klass()) {
78 return ciType::make(ek->as_type_array_klass()->element_type());
79 }
80 return ek;
81 }
82 }
83
84
85 // ------------------------------------------------------------------
86 // ciArrayKlass::is_leaf_type
87 bool ciArrayKlass::is_leaf_type() {
88 if (is_type_array_klass()) {
89 return true;
90 } else {
91 return as_obj_array_klass()->base_element_klass()->is_leaf_type();
92 }
93 }
94
95
96 // ------------------------------------------------------------------
97 // ciArrayKlass::make
98 //
99 // Make an array klass of the specified element type.
100 ciArrayKlass* ciArrayKlass::make(ciType* element_type) {
101 if (element_type->is_primitive_type()) {
102 return ciTypeArrayKlass::make(element_type->basic_type());
103 } else {
104 return ciObjArrayKlass::make(element_type->as_klass());
105 }
106 }
107