src/share/vm/utilities/constantTag.hpp

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   1 /*
   2  * Copyright (c) 1997, 2008, 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 // constant tags in Java .class files
  26 
  27 
  28 enum {
  29   // See jvm.h for shared JVM_CONSTANT_XXX tags
  30   // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
  31   // Hotspot specific tags
  32   JVM_CONSTANT_Invalid                  = 0,    // For bad value initialization
  33   JVM_CONSTANT_InternalMin              = 100,  // First implementation tag (aside from bad value of course)
  34   JVM_CONSTANT_UnresolvedClass          = 100,  // Temporary tag until actual use
  35   JVM_CONSTANT_ClassIndex               = 101,  // Temporary tag while constructing constant pool
  36   JVM_CONSTANT_UnresolvedString         = 102,  // Temporary tag until actual use
  37   JVM_CONSTANT_StringIndex              = 103,  // Temporary tag while constructing constant pool
  38   JVM_CONSTANT_UnresolvedClassInError   = 104,  // Error tag due to resolution error
  39   JVM_CONSTANT_Object                   = 105,  // Required for BoundMethodHandle arguments.
  40   JVM_CONSTANT_InternalMax              = 105   // Last implementation tag
  41 };
  42 
  43 
  44 class constantTag VALUE_OBJ_CLASS_SPEC {


  83   bool is_invoke_dynamic() const           { return _tag == JVM_CONSTANT_InvokeDynamic; }
  84 
  85   constantTag() {
  86     _tag = JVM_CONSTANT_Invalid;
  87   }
  88   constantTag(jbyte tag) {
  89     assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
  90            (tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_InvokeDynamic) ||
  91            (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
  92     _tag = tag;
  93   }
  94 
  95   jbyte value()                      { return _tag; }
  96 
  97   BasicType basic_type() const;        // if used with ldc, what kind of value gets pushed?
  98 
  99   const char* internal_name() const;  // for error reporting
 100 
 101   void print_on(outputStream* st) const PRODUCT_RETURN;
 102 };


   1 /*
   2  * Copyright (c) 1997, 2010, 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_UTILITIES_CONSTANTTAG_HPP
  26 #define SHARE_VM_UTILITIES_CONSTANTTAG_HPP
  27 
  28 #include "prims/jvm.h"
  29 #include "utilities/top.hpp"
  30 
  31 // constant tags in Java .class files
  32 
  33 
  34 enum {
  35   // See jvm.h for shared JVM_CONSTANT_XXX tags
  36   // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
  37   // Hotspot specific tags
  38   JVM_CONSTANT_Invalid                  = 0,    // For bad value initialization
  39   JVM_CONSTANT_InternalMin              = 100,  // First implementation tag (aside from bad value of course)
  40   JVM_CONSTANT_UnresolvedClass          = 100,  // Temporary tag until actual use
  41   JVM_CONSTANT_ClassIndex               = 101,  // Temporary tag while constructing constant pool
  42   JVM_CONSTANT_UnresolvedString         = 102,  // Temporary tag until actual use
  43   JVM_CONSTANT_StringIndex              = 103,  // Temporary tag while constructing constant pool
  44   JVM_CONSTANT_UnresolvedClassInError   = 104,  // Error tag due to resolution error
  45   JVM_CONSTANT_Object                   = 105,  // Required for BoundMethodHandle arguments.
  46   JVM_CONSTANT_InternalMax              = 105   // Last implementation tag
  47 };
  48 
  49 
  50 class constantTag VALUE_OBJ_CLASS_SPEC {


  89   bool is_invoke_dynamic() const           { return _tag == JVM_CONSTANT_InvokeDynamic; }
  90 
  91   constantTag() {
  92     _tag = JVM_CONSTANT_Invalid;
  93   }
  94   constantTag(jbyte tag) {
  95     assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
  96            (tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_InvokeDynamic) ||
  97            (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
  98     _tag = tag;
  99   }
 100 
 101   jbyte value()                      { return _tag; }
 102 
 103   BasicType basic_type() const;        // if used with ldc, what kind of value gets pushed?
 104 
 105   const char* internal_name() const;  // for error reporting
 106 
 107   void print_on(outputStream* st) const PRODUCT_RETURN;
 108 };
 109 
 110 #endif // SHARE_VM_UTILITIES_CONSTANTTAG_HPP