Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/utilities/ConstantTag.java @ 554:78144dc3db03
Merge
author | never |
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date | Tue, 13 Jan 2009 14:02:19 -0800 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2001-2005 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.utilities; public class ConstantTag { // These replicated from the VM to save space private static int JVM_CONSTANT_Utf8 = 1; private static int JVM_CONSTANT_Unicode = 2; // unused private static int JVM_CONSTANT_Integer = 3; private static int JVM_CONSTANT_Float = 4; private static int JVM_CONSTANT_Long = 5; private static int JVM_CONSTANT_Double = 6; private static int JVM_CONSTANT_Class = 7; private static int JVM_CONSTANT_String = 8; private static int JVM_CONSTANT_Fieldref = 9; private static int JVM_CONSTANT_Methodref = 10; private static int JVM_CONSTANT_InterfaceMethodref = 11; private static int JVM_CONSTANT_NameAndType = 12; private static int JVM_CONSTANT_Invalid = 0; // For bad value initialization private static int JVM_CONSTANT_UnresolvedClass = 100; // Temporary tag until actual use private static int JVM_CONSTANT_ClassIndex = 101; // Temporary tag while constructing constant pool private static int JVM_CONSTANT_UnresolvedString = 102; // Temporary tag until actual use private static int JVM_CONSTANT_StringIndex = 103; // Temporary tag while constructing constant pool private static int JVM_CONSTANT_UnresolvedClassInError = 104; // Resolution failed private byte tag; public ConstantTag(byte tag) { this.tag = tag; } public boolean isKlass() { return tag == JVM_CONSTANT_Class; } public boolean isField () { return tag == JVM_CONSTANT_Fieldref; } public boolean isMethod() { return tag == JVM_CONSTANT_Methodref; } public boolean isInterfaceMethod() { return tag == JVM_CONSTANT_InterfaceMethodref; } public boolean isString() { return tag == JVM_CONSTANT_String; } public boolean isInt() { return tag == JVM_CONSTANT_Integer; } public boolean isFloat() { return tag == JVM_CONSTANT_Float; } public boolean isLong() { return tag == JVM_CONSTANT_Long; } public boolean isDouble() { return tag == JVM_CONSTANT_Double; } public boolean isNameAndType() { return tag == JVM_CONSTANT_NameAndType; } public boolean isUtf8() { return tag == JVM_CONSTANT_Utf8; } public boolean isInvalid() { return tag == JVM_CONSTANT_Invalid; } public boolean isUnresolvedKlass() { return tag == JVM_CONSTANT_UnresolvedClass || tag == JVM_CONSTANT_UnresolvedClassInError; } public boolean isUnresolveKlassInError() { return tag == JVM_CONSTANT_UnresolvedClassInError; } public boolean isKlassIndex() { return tag == JVM_CONSTANT_ClassIndex; } public boolean isUnresolvedString() { return tag == JVM_CONSTANT_UnresolvedString; } public boolean isStringIndex() { return tag == JVM_CONSTANT_StringIndex; } public boolean isKlassReference() { return isKlassIndex() || isUnresolvedKlass(); } public boolean isFieldOrMethod() { return isField() || isMethod() || isInterfaceMethod(); } public boolean isSymbol() { return isUtf8(); } }