Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/ConstantTag.java @ 1602:136b78722a08
6939203: JSR 292 needs method handle constants
Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never
| author | jrose |
|---|---|
| date | Wed, 09 Jun 2010 18:50:45 -0700 |
| parents | c18cbe5936b8 |
| children | 083fde3b838e |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
2 * Copyright (c) 2001, 2005, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.utilities; | |
| 26 | |
| 27 public class ConstantTag { | |
| 28 // These replicated from the VM to save space | |
| 29 private static int JVM_CONSTANT_Utf8 = 1; | |
| 30 private static int JVM_CONSTANT_Unicode = 2; // unused | |
| 31 private static int JVM_CONSTANT_Integer = 3; | |
| 32 private static int JVM_CONSTANT_Float = 4; | |
| 33 private static int JVM_CONSTANT_Long = 5; | |
| 34 private static int JVM_CONSTANT_Double = 6; | |
| 35 private static int JVM_CONSTANT_Class = 7; | |
| 36 private static int JVM_CONSTANT_String = 8; | |
| 37 private static int JVM_CONSTANT_Fieldref = 9; | |
| 38 private static int JVM_CONSTANT_Methodref = 10; | |
| 39 private static int JVM_CONSTANT_InterfaceMethodref = 11; | |
| 40 private static int JVM_CONSTANT_NameAndType = 12; | |
| 1602 | 41 private static int JVM_CONSTANT_MethodHandle = 15; // JSR 292 |
| 42 private static int JVM_CONSTANT_MethodType = 16; // JSR 292 | |
| 0 | 43 private static int JVM_CONSTANT_Invalid = 0; // For bad value initialization |
| 44 private static int JVM_CONSTANT_UnresolvedClass = 100; // Temporary tag until actual use | |
| 45 private static int JVM_CONSTANT_ClassIndex = 101; // Temporary tag while constructing constant pool | |
| 46 private static int JVM_CONSTANT_UnresolvedString = 102; // Temporary tag until actual use | |
| 47 private static int JVM_CONSTANT_StringIndex = 103; // Temporary tag while constructing constant pool | |
| 48 private static int JVM_CONSTANT_UnresolvedClassInError = 104; // Resolution failed | |
| 1602 | 49 private static int JVM_CONSTANT_Object = 105; // Required for BoundMethodHandle arguments. |
| 50 | |
| 51 // JVM_CONSTANT_MethodHandle subtypes //FIXME: connect these to data structure | |
| 52 private static int JVM_REF_getField = 1; | |
| 53 private static int JVM_REF_getStatic = 2; | |
| 54 private static int JVM_REF_putField = 3; | |
| 55 private static int JVM_REF_putStatic = 4; | |
| 56 private static int JVM_REF_invokeVirtual = 5; | |
| 57 private static int JVM_REF_invokeStatic = 6; | |
| 58 private static int JVM_REF_invokeSpecial = 7; | |
| 59 private static int JVM_REF_newInvokeSpecial = 8; | |
| 60 private static int JVM_REF_invokeInterface = 9; | |
| 0 | 61 |
| 62 private byte tag; | |
| 63 | |
| 64 public ConstantTag(byte tag) { | |
| 65 this.tag = tag; | |
| 66 } | |
| 67 | |
| 68 public boolean isKlass() { return tag == JVM_CONSTANT_Class; } | |
| 69 public boolean isField () { return tag == JVM_CONSTANT_Fieldref; } | |
| 70 public boolean isMethod() { return tag == JVM_CONSTANT_Methodref; } | |
| 71 public boolean isInterfaceMethod() { return tag == JVM_CONSTANT_InterfaceMethodref; } | |
| 72 public boolean isString() { return tag == JVM_CONSTANT_String; } | |
| 73 public boolean isInt() { return tag == JVM_CONSTANT_Integer; } | |
| 74 public boolean isFloat() { return tag == JVM_CONSTANT_Float; } | |
| 75 public boolean isLong() { return tag == JVM_CONSTANT_Long; } | |
| 76 public boolean isDouble() { return tag == JVM_CONSTANT_Double; } | |
| 77 public boolean isNameAndType() { return tag == JVM_CONSTANT_NameAndType; } | |
| 78 public boolean isUtf8() { return tag == JVM_CONSTANT_Utf8; } | |
| 1602 | 79 public boolean isMethodHandle() { return tag == JVM_CONSTANT_MethodHandle; } |
| 80 public boolean isMethodType() { return tag == JVM_CONSTANT_MethodType; } | |
| 0 | 81 |
| 82 public boolean isInvalid() { return tag == JVM_CONSTANT_Invalid; } | |
| 83 | |
| 84 public boolean isUnresolvedKlass() { | |
| 85 return tag == JVM_CONSTANT_UnresolvedClass || tag == JVM_CONSTANT_UnresolvedClassInError; | |
| 86 } | |
| 87 public boolean isUnresolveKlassInError() { return tag == JVM_CONSTANT_UnresolvedClassInError; } | |
| 88 public boolean isKlassIndex() { return tag == JVM_CONSTANT_ClassIndex; } | |
| 89 public boolean isUnresolvedString() { return tag == JVM_CONSTANT_UnresolvedString; } | |
| 90 public boolean isStringIndex() { return tag == JVM_CONSTANT_StringIndex; } | |
| 91 | |
| 1602 | 92 public boolean isObject() { return tag == JVM_CONSTANT_Object; } |
| 93 | |
| 0 | 94 public boolean isKlassReference() { return isKlassIndex() || isUnresolvedKlass(); } |
| 95 public boolean isFieldOrMethod() { return isField() || isMethod() || isInterfaceMethod(); } | |
| 96 public boolean isSymbol() { return isUtf8(); } | |
| 97 } |