jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/code/Flags.java@005bec70ca27 (annotated)

src/share/classes/com/sun/tools/javac/code/Flags.java@005bec70ca27 (annotated)

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

Fri, 18 Jun 2010 15:12:04 -0700

author: jrose
date: Fri, 18 Jun 2010 15:12:04 -0700
changeset 573: 005bec70ca27
parent 554: 9d9f26857129
parent 571: f0e3ec1f9d9f
child 591: d1d7595fa824
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 1999, 2008, Oracle and/or its affiliates. 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.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.tools.javac.code;
 import java.util.EnumSet;
 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();
         String sep = "";
         for (Flag s : asFlagSet(flags)) {
             buf.append(sep);
             buf.append(s);
             sep = " ";
         }
         return buf.toString();
     }
     public static EnumSet<Flag> asFlagSet(long mask) {
         EnumSet<Flag> flags = EnumSet.noneOf(Flag.class);
         if ((mask&PUBLIC) != 0) flags.add(Flag.PUBLIC);
         if ((mask&PRIVATE) != 0) flags.add(Flag.PRIVATE);
         if ((mask&PROTECTED) != 0) flags.add(Flag.PROTECTED);
         if ((mask&STATIC) != 0) flags.add(Flag.STATIC);
         if ((mask&FINAL) != 0) flags.add(Flag.FINAL);
         if ((mask&SYNCHRONIZED) != 0) flags.add(Flag.SYNCHRONIZED);
         if ((mask&VOLATILE) != 0) flags.add(Flag.VOLATILE);
         if ((mask&TRANSIENT) != 0) flags.add(Flag.TRANSIENT);
         if ((mask&NATIVE) != 0) flags.add(Flag.NATIVE);
         if ((mask&INTERFACE) != 0) flags.add(Flag.INTERFACE);
         if ((mask&ABSTRACT) != 0) flags.add(Flag.ABSTRACT);
         if ((mask&STRICTFP) != 0) flags.add(Flag.STRICTFP);
         if ((mask&BRIDGE) != 0) flags.add(Flag.BRIDGE);
         if ((mask&SYNTHETIC) != 0) flags.add(Flag.SYNTHETIC);
         if ((mask&DEPRECATED) != 0) flags.add(Flag.DEPRECATED);
         if ((mask&HASINIT) != 0) flags.add(Flag.HASINIT);
         if ((mask&ENUM) != 0) flags.add(Flag.ENUM);
         if ((mask&IPROXY) != 0) flags.add(Flag.IPROXY);
         if ((mask&NOOUTERTHIS) != 0) flags.add(Flag.NOOUTERTHIS);
         if ((mask&EXISTS) != 0) flags.add(Flag.EXISTS);
         if ((mask&COMPOUND) != 0) flags.add(Flag.COMPOUND);
         if ((mask&CLASS_SEEN) != 0) flags.add(Flag.CLASS_SEEN);
         if ((mask&SOURCE_SEEN) != 0) flags.add(Flag.SOURCE_SEEN);
         if ((mask&LOCKED) != 0) flags.add(Flag.LOCKED);
         if ((mask&UNATTRIBUTED) != 0) flags.add(Flag.UNATTRIBUTED);
         if ((mask&ANONCONSTR) != 0) flags.add(Flag.ANONCONSTR);
         if ((mask&ACYCLIC) != 0) flags.add(Flag.ACYCLIC);
         if ((mask&PARAMETER) != 0) flags.add(Flag.PARAMETER);
         if ((mask&VARARGS) != 0) flags.add(Flag.VARARGS);
         return flags;
     }
     /* 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;
     public static final int ModifierFlags = StandardFlags & ~INTERFACE;
     // 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;
     /**
      * Flag that marks a disjoint var in a multi-catch clause
      */
     public static final long DISJOINT = 1L<<39;
     /**
      * Flag that marks a signature-polymorphic invoke method.
      * (These occur inside java.dyn.MethodHandle.)
      */
     public static final long POLYMORPHIC_SIGNATURE = 1L<<40;
     /** 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;
     }
     public enum Flag {
         PUBLIC("public"),
         PRIVATE("private"),
         PROTECTED("protected"),
         STATIC("static"),
         FINAL("final"),
         SYNCHRONIZED("synchronized"),
         VOLATILE("volatile"),
         TRANSIENT("transient"),
         NATIVE("native"),
         INTERFACE("interface"),
         ABSTRACT("abstract"),
         STRICTFP("strictfp"),
         BRIDGE("bridge"),
         SYNTHETIC("synthetic"),
         DEPRECATED("deprecated"),
         HASINIT("hasinit"),
         ENUM("enum"),
         IPROXY("iproxy"),
         NOOUTERTHIS("noouterthis"),
         EXISTS("exists"),
         COMPOUND("compound"),
         CLASS_SEEN("class_seen"),
         SOURCE_SEEN("source_seen"),
         LOCKED("locked"),
         UNATTRIBUTED("unattributed"),
         ANONCONSTR("anonconstr"),
         ACYCLIC("acyclic"),
         PARAMETER("parameter"),
         VARARGS("varargs"),
         PACKAGE("package");
         String name;
         Flag(String name) {
             this.name = name;
         }
         public String toString() {
             return name;
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/code/Flags.java@005bec70ca27 (annotated)

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