1 /*
2 * Copyright (c) 1999, 2012, 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_CIMETADATA_HPP
26 #define SHARE_VM_CI_CIMETADATA_HPP
27
28 #include "ci/ciBaseObject.hpp"
29 #include "ci/ciClassList.hpp"
30 #include "memory/allocation.hpp"
31 #include "runtime/handles.hpp"
32 #include "runtime/jniHandles.hpp"
33
34 // ciMetadata
35 //
36 // Compiler interface to metadata object in the VM, not Java object.
37
38 class ciMetadata: public ciBaseObject {
39 CI_PACKAGE_ACCESS
40 friend class ciEnv;
41
42 protected:
43 Metadata* _metadata;
44
45 ciMetadata(): _metadata(NULL) {}
46 ciMetadata(Metadata* o): _metadata(o) {}
47
48 virtual bool is_classless() const { return false; }
49 public:
50 bool is_loaded() const { return _metadata != NULL || is_classless(); }
51
52 virtual bool is_metadata() const { return true; }
53
54 virtual bool is_type() const { return false; }
55 virtual bool is_cpcache() const { return false; }
56 virtual bool is_return_address() const { return false; }
57 virtual bool is_method() const { return false; }
58 virtual bool is_method_data() const { return false; }
59 virtual bool is_klass() const { return false; }
60 virtual bool is_instance_klass() const { return false; }
61 virtual bool is_valuetype() const { return false; }
62 virtual bool is_array_klass() const { return false; }
63 virtual bool is_obj_array_klass() const { return false; }
64 virtual bool is_type_array_klass() const { return false; }
65 virtual void dump_replay_data(outputStream* st) { /* do nothing */ }
66
67 ciMethod* as_method() {
68 assert(is_method(), "bad cast");
69 return (ciMethod*)this;
70 }
71 ciMethodData* as_method_data() {
72 assert(is_method_data(), "bad cast");
73 return (ciMethodData*)this;
74 }
75 ciSymbol* as_symbol() {
76 assert(is_symbol(), "bad cast");
77 return (ciSymbol*)this;
78 }
79 ciType* as_type() {
80 assert(is_type(), "bad cast");
81 return (ciType*)this;
82 }
83 ciReturnAddress* as_return_address() {
84 assert(is_return_address(), "bad cast");
85 return (ciReturnAddress*)this;
86 }
87 ciKlass* as_klass() {
88 assert(is_klass(), "bad cast");
89 return (ciKlass*)this;
90 }
91 ciInstanceKlass* as_instance_klass() {
92 assert(is_instance_klass(), "bad cast");
93 return (ciInstanceKlass*)this;
94 }
95 ciArrayKlass* as_array_klass() {
96 assert(is_array_klass(), "bad cast");
97 return (ciArrayKlass*)this;
98 }
99 ciObjArrayKlass* as_obj_array_klass() {
100 assert(is_obj_array_klass(), "bad cast");
101 return (ciObjArrayKlass*)this;
102 }
103 ciTypeArrayKlass* as_type_array_klass() {
104 assert(is_type_array_klass(), "bad cast");
105 return (ciTypeArrayKlass*)this;
106 }
107 ciValueKlass* as_value_klass() {
108 assert(is_valuetype(), "bad cast");
109 return (ciValueKlass*)this;
110 }
111
112 Metadata* constant_encoding() { return _metadata; }
113
114 bool equals(ciMetadata* obj) const { return (this == obj); }
115
116 int hash() { return ident() * 31; } // ???
117
118 void print(outputStream* st);
119 virtual void print_impl(outputStream* st) {}
120 virtual const char* type_string() { return "ciMetadata"; }
121
122 void print() { print(tty); }
123 void print_metadata(outputStream* st = tty);
124
125 };
126 #endif // SHARE_VM_CI_CIMETADATA_HPP