constantTag.cpp revision 6412:53a41e7cbe05 
1/*
2 * Copyright (c) 1997, 2014, 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
28#ifndef PRODUCT
29
30void constantTag::print_on(outputStream* st) const {
31  st->print("%s", internal_name());
32}
33
34#endif // PRODUCT
35
36BasicType constantTag::basic_type() const {
37  switch (_tag) {
38    case JVM_CONSTANT_Integer :
39      return T_INT;
40    case JVM_CONSTANT_Float :
41      return T_FLOAT;
42    case JVM_CONSTANT_Long :
43      return T_LONG;
44    case JVM_CONSTANT_Double :
45      return T_DOUBLE;
46
47    case JVM_CONSTANT_Class :
48    case JVM_CONSTANT_String :
49    case JVM_CONSTANT_UnresolvedClass :
50    case JVM_CONSTANT_UnresolvedClassInError :
51    case JVM_CONSTANT_ClassIndex :
52    case JVM_CONSTANT_StringIndex :
53    case JVM_CONSTANT_MethodHandle :
54    case JVM_CONSTANT_MethodHandleInError :
55    case JVM_CONSTANT_MethodType :
56    case JVM_CONSTANT_MethodTypeInError :
57      return T_OBJECT;
58    default:
59      ShouldNotReachHere();
60      return T_ILLEGAL;
61  }
62}
63
64
65jbyte constantTag::non_error_value() const {
66  switch (_tag) {
67  case JVM_CONSTANT_UnresolvedClassInError:
68    return JVM_CONSTANT_UnresolvedClass;
69  case JVM_CONSTANT_MethodHandleInError:
70    return JVM_CONSTANT_MethodHandle;
71  case JVM_CONSTANT_MethodTypeInError:
72    return JVM_CONSTANT_MethodType;
73  default:
74    return _tag;
75  }
76}
77
78
79jbyte constantTag::error_value() const {
80  switch (_tag) {
81  case JVM_CONSTANT_UnresolvedClass:
82    return JVM_CONSTANT_UnresolvedClassInError;
83  case JVM_CONSTANT_MethodHandle:
84    return JVM_CONSTANT_MethodHandleInError;
85  case JVM_CONSTANT_MethodType:
86    return JVM_CONSTANT_MethodTypeInError;
87  default:
88    ShouldNotReachHere();
89    return JVM_CONSTANT_Invalid;
90  }
91}
92
93const char* constantTag::internal_name() const {
94  switch (_tag) {
95    case JVM_CONSTANT_Invalid :
96      return "Invalid index";
97    case JVM_CONSTANT_Class :
98      return "Class";
99    case JVM_CONSTANT_Fieldref :
100      return "Field";
101    case JVM_CONSTANT_Methodref :
102      return "Method";
103    case JVM_CONSTANT_InterfaceMethodref :
104      return "InterfaceMethod";
105    case JVM_CONSTANT_String :
106      return "String";
107    case JVM_CONSTANT_Integer :
108      return "Integer";
109    case JVM_CONSTANT_Float :
110      return "Float";
111    case JVM_CONSTANT_Long :
112      return "Long";
113    case JVM_CONSTANT_Double :
114      return "Double";
115    case JVM_CONSTANT_NameAndType :
116      return "NameAndType";
117    case JVM_CONSTANT_MethodHandle :
118      return "MethodHandle";
119    case JVM_CONSTANT_MethodHandleInError :
120      return "MethodHandle Error";
121    case JVM_CONSTANT_MethodType :
122      return "MethodType";
123    case JVM_CONSTANT_MethodTypeInError :
124      return "MethodType Error";
125    case JVM_CONSTANT_InvokeDynamic :
126      return "InvokeDynamic";
127    case JVM_CONSTANT_Utf8 :
128      return "Utf8";
129    case JVM_CONSTANT_UnresolvedClass :
130      return "Unresolved Class";
131    case JVM_CONSTANT_UnresolvedClassInError :
132      return "Unresolved Class Error";
133    case JVM_CONSTANT_ClassIndex :
134      return "Unresolved Class Index";
135    case JVM_CONSTANT_StringIndex :
136      return "Unresolved String Index";
137    default:
138      ShouldNotReachHere();
139      return "Illegal";
140  }
141}
142