1 /*
2 * Copyright (c) 1997, 2017, 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 "utilities/constantTag.hpp"
27 #include "utilities/ostream.hpp"
28
29 #ifndef PRODUCT
30
31 void constantTag::print_on(outputStream* st) const {
32 st->print("%s", internal_name());
33 }
34
35 #endif // PRODUCT
36
37 BasicType constantTag::basic_type() const {
38 switch (_tag) {
39 case JVM_CONSTANT_Integer :
40 return T_INT;
41 case JVM_CONSTANT_Float :
42 return T_FLOAT;
43 case JVM_CONSTANT_Long :
44 return T_LONG;
45 case JVM_CONSTANT_Double :
46 return T_DOUBLE;
47
48 case JVM_CONSTANT_Class :
49 case JVM_CONSTANT_String :
50 case JVM_CONSTANT_UnresolvedClass :
51 case JVM_CONSTANT_UnresolvedClassInError :
52 case JVM_CONSTANT_ClassIndex :
53 case JVM_CONSTANT_StringIndex :
54 case JVM_CONSTANT_MethodHandle :
55 case JVM_CONSTANT_MethodHandleInError :
56 case JVM_CONSTANT_MethodType :
57 case JVM_CONSTANT_MethodTypeInError :
58 return T_OBJECT;
59
60 case JVM_CONSTANT_Dynamic :
61 case JVM_CONSTANT_DynamicInError :
62 assert(false, "Dynamic constant has no fixed basic type");
63
64 default:
65 ShouldNotReachHere();
66 return T_ILLEGAL;
67 }
68 }
69
70
71 jbyte constantTag::non_error_value() const {
72 switch (_tag) {
73 case JVM_CONSTANT_UnresolvedClassInError:
74 return JVM_CONSTANT_UnresolvedClass;
75 case JVM_CONSTANT_MethodHandleInError:
76 return JVM_CONSTANT_MethodHandle;
77 case JVM_CONSTANT_MethodTypeInError:
78 return JVM_CONSTANT_MethodType;
79 case JVM_CONSTANT_DynamicInError:
80 return JVM_CONSTANT_Dynamic;
81 default:
82 return _tag;
83 }
84 }
85
86
87 jbyte constantTag::error_value() const {
88 switch (_tag) {
89 case JVM_CONSTANT_UnresolvedClass:
90 return JVM_CONSTANT_UnresolvedClassInError;
91 case JVM_CONSTANT_MethodHandle:
92 return JVM_CONSTANT_MethodHandleInError;
93 case JVM_CONSTANT_MethodType:
94 return JVM_CONSTANT_MethodTypeInError;
95 case JVM_CONSTANT_Dynamic:
96 return JVM_CONSTANT_DynamicInError;
97 default:
98 ShouldNotReachHere();
99 return JVM_CONSTANT_Invalid;
100 }
101 }
102
103 const char* constantTag::internal_name() const {
104 switch (_tag) {
105 case JVM_CONSTANT_Invalid :
106 return "Invalid index";
107 case JVM_CONSTANT_Class :
108 return "Class";
109 case JVM_CONSTANT_Fieldref :
110 return "Field";
111 case JVM_CONSTANT_Methodref :
112 return "Method";
113 case JVM_CONSTANT_InterfaceMethodref :
114 return "InterfaceMethod";
115 case JVM_CONSTANT_String :
116 return "String";
117 case JVM_CONSTANT_Integer :
118 return "Integer";
119 case JVM_CONSTANT_Float :
120 return "Float";
121 case JVM_CONSTANT_Long :
122 return "Long";
123 case JVM_CONSTANT_Double :
124 return "Double";
125 case JVM_CONSTANT_NameAndType :
126 return "NameAndType";
127 case JVM_CONSTANT_MethodHandle :
128 return "MethodHandle";
129 case JVM_CONSTANT_MethodHandleInError :
130 return "MethodHandle Error";
131 case JVM_CONSTANT_MethodType :
132 return "MethodType";
133 case JVM_CONSTANT_MethodTypeInError :
134 return "MethodType Error";
135 case JVM_CONSTANT_Dynamic :
136 return "Dynamic";
137 case JVM_CONSTANT_DynamicInError :
138 return "Dynamic Error";
139 case JVM_CONSTANT_InvokeDynamic :
140 return "InvokeDynamic";
141 case JVM_CONSTANT_Utf8 :
142 return "Utf8";
143 case JVM_CONSTANT_UnresolvedClass :
144 return "Unresolved Class";
145 case JVM_CONSTANT_UnresolvedClassInError :
146 return "Unresolved Class Error";
147 case JVM_CONSTANT_ClassIndex :
148 return "Unresolved Class Index";
149 case JVM_CONSTANT_StringIndex :
150 return "Unresolved String Index";
151 default:
152 return "Illegal";
153 }
154 }