jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/code/Flags.java@9a66ca7c79fa (annotated)

src/share/classes/com/sun/tools/javac/code/Flags.java@9a66ca7c79fa (annotated)

src/share/classes/com/sun/tools/javac/code/Flags.java

Sat, 01 Dec 2007 00:00:00 +0000

author: duke
date: Sat, 01 Dec 2007 00:00:00 +0000
changeset 1: 9a66ca7c79fa
child 80: 5c9cdeb740f2
permissions: -rw-r--r--

Initial load

 /*
  * Copyright 1999-2006 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.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun in the LICENSE file that accompanied this code.
  *
  * 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 com.sun.tools.javac.code;
 import java.util.Collections;
 import java.util.Map;
 import java.util.Set;
 import javax.lang.model.element.Modifier;
 /** Access flags and other modifiers for Java classes and members.
  *
  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
  *  you write code that depends on this, you do so at your own risk.
  *  This code and its internal interfaces are subject to change or
  *  deletion without notice.</b>
  */
 public class Flags {
     private Flags() {} // uninstantiable
     public static String toString(long flags) {
         StringBuffer buf = new StringBuffer();
         if ((flags&PUBLIC) != 0) buf.append("public ");
         if ((flags&PRIVATE) != 0) buf.append("private ");
         if ((flags&PROTECTED) != 0) buf.append("protected ");
         if ((flags&STATIC) != 0) buf.append("static ");
         if ((flags&FINAL) != 0) buf.append("final ");
         if ((flags&SYNCHRONIZED) != 0) buf.append("synchronized ");
         if ((flags&VOLATILE) != 0) buf.append("volatile ");
         if ((flags&TRANSIENT) != 0) buf.append("transient ");
         if ((flags&NATIVE) != 0) buf.append("native ");
         if ((flags&INTERFACE) != 0) buf.append("interface ");
         if ((flags&ABSTRACT) != 0) buf.append("abstract ");
         if ((flags&STRICTFP) != 0) buf.append("strictfp ");
         if ((flags&BRIDGE) != 0) buf.append("bridge ");
         if ((flags&SYNTHETIC) != 0) buf.append("synthetic ");
         if ((flags&DEPRECATED) != 0) buf.append("deprecated ");
         if ((flags&HASINIT) != 0) buf.append("hasinit ");
         if ((flags&ENUM) != 0) buf.append("enum ");
         if ((flags&IPROXY) != 0) buf.append("iproxy ");
         if ((flags&NOOUTERTHIS) != 0) buf.append("noouterthis ");
         if ((flags&EXISTS) != 0) buf.append("exists ");
         if ((flags&COMPOUND) != 0) buf.append("compound ");
         if ((flags&CLASS_SEEN) != 0) buf.append("class_seen ");
         if ((flags&SOURCE_SEEN) != 0) buf.append("source_seen ");
         if ((flags&LOCKED) != 0) buf.append("locked ");
         if ((flags&UNATTRIBUTED) != 0) buf.append("unattributed ");
         if ((flags&ANONCONSTR) != 0) buf.append("anonconstr ");
         if ((flags&ACYCLIC) != 0) buf.append("acyclic ");
         if ((flags&PARAMETER) != 0) buf.append("parameter ");
         if ((flags&VARARGS) != 0) buf.append("varargs ");
         return buf.toString();
     }
     /* Standard Java flags.
      */
     public static final int PUBLIC       = 1<<0;
     public static final int PRIVATE      = 1<<1;
     public static final int PROTECTED    = 1<<2;
     public static final int STATIC       = 1<<3;
     public static final int FINAL        = 1<<4;
     public static final int SYNCHRONIZED = 1<<5;
     public static final int VOLATILE     = 1<<6;
     public static final int TRANSIENT    = 1<<7;
     public static final int NATIVE       = 1<<8;
     public static final int INTERFACE    = 1<<9;
     public static final int ABSTRACT     = 1<<10;
     public static final int STRICTFP     = 1<<11;
     /* Flag that marks a symbol synthetic, added in classfile v49.0. */
     public static final int SYNTHETIC    = 1<<12;
     /** Flag that marks attribute interfaces, added in classfile v49.0. */
     public static final int ANNOTATION   = 1<<13;
     /** An enumeration type or an enumeration constant, added in
      *  classfile v49.0. */
     public static final int ENUM         = 1<<14;
     public static final int StandardFlags = 0x0fff;
     // Because the following access flags are overloaded with other
     // bit positions, we translate them when reading and writing class
     // files into unique bits positions: ACC_SYNTHETIC <-> SYNTHETIC,
     // for example.
     public static final int ACC_SUPER    = 0x0020;
     public static final int ACC_BRIDGE   = 0x0040;
     public static final int ACC_VARARGS  = 0x0080;
     /*****************************************
      * Internal compiler flags (no bits in the lower 16).
      *****************************************/
     /** Flag is set if symbol is deprecated.
      */
     public static final int DEPRECATED   = 1<<17;
     /** Flag is set for a variable symbol if the variable's definition
      *  has an initializer part.
      */
     public static final int HASINIT          = 1<<18;
     /** Flag is set for compiler-generated anonymous method symbols
      *  that `own' an initializer block.
      */
     public static final int BLOCK            = 1<<20;
     /** Flag is set for compiler-generated abstract methods that implement
      *  an interface method (Miranda methods).
      */
     public static final int IPROXY           = 1<<21;
     /** Flag is set for nested classes that do not access instance members
      *  or `this' of an outer class and therefore don't need to be passed
      *  a this$n reference.  This flag is currently set only for anonymous
      *  classes in superclass constructor calls and only for pre 1.4 targets.
      *  todo: use this flag for optimizing away this$n parameters in
      *  other cases.
      */
     public static final int NOOUTERTHIS  = 1<<22;
     /** Flag is set for package symbols if a package has a member or
      *  directory and therefore exists.
      */
     public static final int EXISTS           = 1<<23;
     /** Flag is set for compiler-generated compound classes
      *  representing multiple variable bounds
      */
     public static final int COMPOUND     = 1<<24;
     /** Flag is set for class symbols if a class file was found for this class.
      */
     public static final int CLASS_SEEN   = 1<<25;
     /** Flag is set for class symbols if a source file was found for this
      *  class.
      */
     public static final int SOURCE_SEEN  = 1<<26;
     /* State flags (are reset during compilation).
      */
     /** Flag for class symbols is set and later re-set as a lock in
      *  Enter to detect cycles in the superclass/superinterface
      *  relations.  Similarly for constructor call cycle detection in
      *  Attr.
      */
     public static final int LOCKED           = 1<<27;
     /** Flag for class symbols is set and later re-set to indicate that a class
      *  has been entered but has not yet been attributed.
      */
     public static final int UNATTRIBUTED = 1<<28;
     /** Flag for synthesized default constructors of anonymous classes.
      */
     public static final int ANONCONSTR   = 1<<29;
     /** Flag for class symbols to indicate it has been checked and found
      *  acyclic.
      */
     public static final int ACYCLIC          = 1<<30;
     /** Flag that marks bridge methods.
      */
     public static final long BRIDGE          = 1L<<31;
     /** Flag that marks formal parameters.
      */
     public static final long PARAMETER   = 1L<<33;
     /** Flag that marks varargs methods.
      */
     public static final long VARARGS   = 1L<<34;
     /** Flag for annotation type symbols to indicate it has been
      *  checked and found acyclic.
      */
     public static final long ACYCLIC_ANN      = 1L<<35;
     /** Flag that marks a generated default constructor.
      */
     public static final long GENERATEDCONSTR   = 1L<<36;
     /** Flag that marks a hypothetical method that need not really be
      *  generated in the binary, but is present in the symbol table to
      *  simplify checking for erasure clashes.
      */
     public static final long HYPOTHETICAL   = 1L<<37;
     /**
      * Flag that marks a Sun proprietary class.
      */
     public static final long PROPRIETARY = 1L<<38;
     /** Modifier masks.
      */
     public static final int
         AccessFlags           = PUBLIC | PROTECTED | PRIVATE,
         LocalClassFlags       = FINAL | ABSTRACT | STRICTFP | ENUM | SYNTHETIC,
         MemberClassFlags      = LocalClassFlags | INTERFACE | AccessFlags,
         ClassFlags            = LocalClassFlags | INTERFACE | PUBLIC | ANNOTATION,
         InterfaceVarFlags     = FINAL | STATIC | PUBLIC,
         VarFlags              = AccessFlags | FINAL | STATIC |
                                 VOLATILE | TRANSIENT | ENUM,
         ConstructorFlags      = AccessFlags,
         InterfaceMethodFlags  = ABSTRACT | PUBLIC,
         MethodFlags           = AccessFlags | ABSTRACT | STATIC | NATIVE |
                                 SYNCHRONIZED | FINAL | STRICTFP;
     public static final long
         LocalVarFlags         = FINAL | PARAMETER;
     public static Set<Modifier> asModifierSet(long flags) {
         Set<Modifier> modifiers = modifierSets.get(flags);
         if (modifiers == null) {
             modifiers = java.util.EnumSet.noneOf(Modifier.class);
             if (0 != (flags & PUBLIC))    modifiers.add(Modifier.PUBLIC);
             if (0 != (flags & PROTECTED)) modifiers.add(Modifier.PROTECTED);
             if (0 != (flags & PRIVATE))   modifiers.add(Modifier.PRIVATE);
             if (0 != (flags & ABSTRACT))  modifiers.add(Modifier.ABSTRACT);
             if (0 != (flags & STATIC))    modifiers.add(Modifier.STATIC);
             if (0 != (flags & FINAL))     modifiers.add(Modifier.FINAL);
             if (0 != (flags & TRANSIENT)) modifiers.add(Modifier.TRANSIENT);
             if (0 != (flags & VOLATILE))  modifiers.add(Modifier.VOLATILE);
             if (0 != (flags & SYNCHRONIZED))
                                           modifiers.add(Modifier.SYNCHRONIZED);
             if (0 != (flags & NATIVE))    modifiers.add(Modifier.NATIVE);
             if (0 != (flags & STRICTFP))  modifiers.add(Modifier.STRICTFP);
             modifiers = Collections.unmodifiableSet(modifiers);
             modifierSets.put(flags, modifiers);
         }
         return modifiers;
     }
     // Cache of modifier sets.
     private static Map<Long, Set<Modifier>> modifierSets =
         new java.util.concurrent.ConcurrentHashMap<Long, Set<Modifier>>(64);
     public static boolean isStatic(Symbol symbol) {
         return (symbol.flags() & STATIC) != 0;
     }
     public static boolean isEnum(Symbol symbol) {
         return (symbol.flags() & ENUM) != 0;
     }
     public static boolean isConstant(Symbol.VarSymbol symbol) {
         return symbol.getConstValue() != null;
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/code/Flags.java@9a66ca7c79fa (annotated)

src/share/classes/com/sun/tools/javac/code/Flags.java