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#include "utilities/ostream.hpp"
28
29#ifndef PRODUCT
30
31void constantTag::print_on(outputStream* st) const {
32  st->print("%s", internal_name());
33}
34
35#endif // PRODUCT
36
37BasicType 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    default:
60      ShouldNotReachHere();
61      return T_ILLEGAL;
62  }
63}
64
65
66jbyte constantTag::non_error_value() const {
67  switch (_tag) {
68  case JVM_CONSTANT_UnresolvedClassInError:
69    return JVM_CONSTANT_UnresolvedClass;
70  case JVM_CONSTANT_MethodHandleInError:
71    return JVM_CONSTANT_MethodHandle;
72  case JVM_CONSTANT_MethodTypeInError:
73    return JVM_CONSTANT_MethodType;
74  default:
75    return _tag;
76  }
77}
78
79
80jbyte constantTag::error_value() const {
81  switch (_tag) {
82  case JVM_CONSTANT_UnresolvedClass:
83    return JVM_CONSTANT_UnresolvedClassInError;
84  case JVM_CONSTANT_MethodHandle:
85    return JVM_CONSTANT_MethodHandleInError;
86  case JVM_CONSTANT_MethodType:
87    return JVM_CONSTANT_MethodTypeInError;
88  default:
89    ShouldNotReachHere();
90    return JVM_CONSTANT_Invalid;
91  }
92}
93
94const char* constantTag::internal_name() const {
95  switch (_tag) {
96    case JVM_CONSTANT_Invalid :
97      return "Invalid index";
98    case JVM_CONSTANT_Class :
99      return "Class";
100    case JVM_CONSTANT_Fieldref :
101      return "Field";
102    case JVM_CONSTANT_Methodref :
103      return "Method";
104    case JVM_CONSTANT_InterfaceMethodref :
105      return "InterfaceMethod";
106    case JVM_CONSTANT_String :
107      return "String";
108    case JVM_CONSTANT_Integer :
109      return "Integer";
110    case JVM_CONSTANT_Float :
111      return "Float";
112    case JVM_CONSTANT_Long :
113      return "Long";
114    case JVM_CONSTANT_Double :
115      return "Double";
116    case JVM_CONSTANT_NameAndType :
117      return "NameAndType";
118    case JVM_CONSTANT_MethodHandle :
119      return "MethodHandle";
120    case JVM_CONSTANT_MethodHandleInError :
121      return "MethodHandle Error";
122    case JVM_CONSTANT_MethodType :
123      return "MethodType";
124    case JVM_CONSTANT_MethodTypeInError :
125      return "MethodType Error";
126    case JVM_CONSTANT_InvokeDynamic :
127      return "InvokeDynamic";
128    case JVM_CONSTANT_Utf8 :
129      return "Utf8";
130    case JVM_CONSTANT_UnresolvedClass :
131      return "Unresolved Class";
132    case JVM_CONSTANT_UnresolvedClassInError :
133      return "Unresolved Class Error";
134    case JVM_CONSTANT_ClassIndex :
135      return "Unresolved Class Index";
136    case JVM_CONSTANT_StringIndex :
137      return "Unresolved String Index";
138    default:
139      ShouldNotReachHere();
140      return "Illegal";
141  }
142}
143