1/* 2 * Copyright (c) 2000, 2012, 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 25package sun.jvm.hotspot.oops; 26 27import sun.jvm.hotspot.runtime.ClassConstants; 28import java.io.*; 29 30public class AccessFlags implements /* imports */ ClassConstants { 31 public AccessFlags(long flags) { 32 this.flags = flags; 33 } 34 35 private long flags; 36 37 // Java access flags 38 public boolean isPublic () { return (flags & JVM_ACC_PUBLIC ) != 0; } 39 public boolean isPrivate () { return (flags & JVM_ACC_PRIVATE ) != 0; } 40 public boolean isProtected () { return (flags & JVM_ACC_PROTECTED ) != 0; } 41 public boolean isStatic () { return (flags & JVM_ACC_STATIC ) != 0; } 42 public boolean isFinal () { return (flags & JVM_ACC_FINAL ) != 0; } 43 public boolean isSynchronized() { return (flags & JVM_ACC_SYNCHRONIZED) != 0; } 44 public boolean isSuper () { return (flags & JVM_ACC_SUPER ) != 0; } 45 public boolean isVolatile () { return (flags & JVM_ACC_VOLATILE ) != 0; } 46 public boolean isBridge () { return (flags & JVM_ACC_BRIDGE ) != 0; } 47 public boolean isTransient () { return (flags & JVM_ACC_TRANSIENT ) != 0; } 48 public boolean isVarArgs () { return (flags & JVM_ACC_VARARGS ) != 0; } 49 public boolean isNative () { return (flags & JVM_ACC_NATIVE ) != 0; } 50 public boolean isEnum () { return (flags & JVM_ACC_ENUM ) != 0; } 51 public boolean isAnnotation () { return (flags & JVM_ACC_ANNOTATION ) != 0; } 52 public boolean isInterface () { return (flags & JVM_ACC_INTERFACE ) != 0; } 53 public boolean isAbstract () { return (flags & JVM_ACC_ABSTRACT ) != 0; } 54 public boolean isStrict () { return (flags & JVM_ACC_STRICT ) != 0; } 55 public boolean isSynthetic () { return (flags & JVM_ACC_SYNTHETIC ) != 0; } 56 57 public long getValue () { return flags; } 58 59 // Hotspot internal flags 60 // Method* flags 61 public boolean isMonitorMatching () { return (flags & JVM_ACC_MONITOR_MATCH ) != 0; } 62 public boolean hasMonitorBytecodes () { return (flags & JVM_ACC_HAS_MONITOR_BYTECODES ) != 0; } 63 public boolean hasLoops () { return (flags & JVM_ACC_HAS_LOOPS ) != 0; } 64 public boolean loopsFlagInit () { return (flags & JVM_ACC_LOOPS_FLAG_INIT ) != 0; } 65 public boolean queuedForCompilation() { return (flags & JVM_ACC_QUEUED ) != 0; } 66 public boolean isNotOsrCompilable () { return (flags & JVM_ACC_NOT_OSR_COMPILABLE ) != 0; } 67 public boolean hasLineNumberTable () { return (flags & JVM_ACC_HAS_LINE_NUMBER_TABLE ) != 0; } 68 public boolean hasCheckedExceptions() { return (flags & JVM_ACC_HAS_CHECKED_EXCEPTIONS ) != 0; } 69 public boolean hasJsrs () { return (flags & JVM_ACC_HAS_JSRS ) != 0; } 70 public boolean isObsolete () { return (flags & JVM_ACC_IS_OBSOLETE ) != 0; } 71 72 // Klass* flags 73 public boolean hasMirandaMethods () { return (flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; } 74 public boolean hasVanillaConstructor() { return (flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; } 75 public boolean hasFinalizer () { return (flags & JVM_ACC_HAS_FINALIZER ) != 0; } 76 public boolean isCloneable () { return (flags & JVM_ACC_IS_CLONEABLE ) != 0; } 77 78 // Klass* and Method* flags 79 public boolean hasLocalVariableTable() { return (flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE ) != 0; } 80 81 // field flags 82 public boolean fieldAccessWatched () { return (flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; } 83 public boolean fieldModificationWatched() { return (flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; } 84 public boolean fieldHasGenericSignature() { return (flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE)!= 0; } 85 86 public void printOn(PrintStream tty) { 87 // prints only .class flags and not the hotspot internal flags 88 if (isPublic ()) tty.print("public " ); 89 if (isPrivate ()) tty.print("private " ); 90 if (isProtected ()) tty.print("protected " ); 91 if (isStatic ()) tty.print("static " ); 92 if (isFinal ()) tty.print("final " ); 93 if (isSynchronized()) tty.print("synchronized "); 94 if (isVolatile ()) tty.print("volatile " ); 95 if (isBridge ()) tty.print("bridge " ); 96 if (isTransient ()) tty.print("transient " ); 97 if (isVarArgs ()) tty.print("varargs " ); 98 if (isNative ()) tty.print("native " ); 99 if (isEnum ()) tty.print("enum " ); 100 if (isInterface ()) tty.print("interface " ); 101 if (isAbstract ()) tty.print("abstract " ); 102 if (isStrict ()) tty.print("strict " ); 103 if (isSynthetic ()) tty.print("synthetic " ); 104 } 105 106 // get flags written to .class files 107 public int getStandardFlags() { 108 return (int) (flags & JVM_ACC_WRITTEN_FLAGS); 109 } 110} 111