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 
  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     default:
  60       ShouldNotReachHere();
  61       return T_ILLEGAL;
  62   }
  63 }
  64 
  65 
  66 jbyte 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 
  80 jbyte 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 
  94 const 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 }