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4075303: Use javap to enquire aboput a specific inner class

Browse source 
4348375: Javap is not internationalized
4459541: "javap -l" shows line numbers as signed short; they should be unsigned
4501660: change diagnostic of -help as 'print this help message and exit'
4776241: unused source file in javap..
4870651: javap should recognize generics, varargs, enum
4876942: javap invoked without args does not print help screen
4880663: javap could output whitespace between class name and opening brace
4975569: javap doesn't print new flag bits
6271787: javap dumps LocalVariableTypeTable attribute in hex, needs to print a table
6305779: javap: support annotations
6439940: Clean up javap implementation
6469569: wrong check of searchpath in JavapEnvironment
6474890: javap does not open .zip files in -classpath
6587786: Javap throws error : "ERROR:Could not find <classname>" for JRE classes
6622215: javap ignores certain relevant access flags
6622216: javap names some attributes incorrectly
6622232: javap gets whitespace confused
6622260: javap prints negative bytes incorrectly in hex

Reviewed-by: ksrini
This commit is contained in:
Jonathan Gibbons 2008-06-03 13:26:47 -07:00
parent e3ba3ecd1d
commit 0a7516d744
87 changed files with 11690 additions and 8 deletions
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254
langtools/src/share/classes/com/sun/tools/classfile/AccessFlags.java Normal file
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/*
* Copyright 2007 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.classfile;
import java.io.IOException;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* See JVMS3, sections 4.2, 4.6, 4.7.
*
* <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 AccessFlags {
public static final int ACC_PUBLIC = 0x0001; // class, inner, field, method
public static final int ACC_PRIVATE = 0x0002; // inner, field, method
public static final int ACC_PROTECTED = 0x0004; // inner, field, method
public static final int ACC_STATIC = 0x0008; // inner, field, method
public static final int ACC_FINAL = 0x0010; // class, inner, field, method
public static final int ACC_SUPER = 0x0020; // class
public static final int ACC_SYNCHRONIZED = 0x0020; // method
public static final int ACC_VOLATILE = 0x0040; // field
public static final int ACC_BRIDGE = 0x0040; // method
public static final int ACC_TRANSIENT = 0x0080; // field
public static final int ACC_VARARGS = 0x0080; // method
public static final int ACC_NATIVE = 0x0100; // method
public static final int ACC_INTERFACE = 0x0200; // class, inner
public static final int ACC_ABSTRACT = 0x0400; // class, inner, method
public static final int ACC_STRICT = 0x0800; // method
public static final int ACC_SYNTHETIC = 0x1000; // class, inner, field, method
public static final int ACC_ANNOTATION = 0x2000; // class, inner
public static final int ACC_ENUM = 0x4000; // class, inner, field
public static final int ACC_MODULE = 0x8000; // class, inner, field, method
private static enum Type { Class, InnerClass, Field, Method};
AccessFlags(ClassReader cr) throws IOException {
this(cr.readUnsignedShort());
}
public AccessFlags(int flags) {
this.flags = flags;
}
public AccessFlags ignore(int mask) {
return new AccessFlags(flags & ~mask);
}
public boolean is(int mask) {
return (flags & mask) != 0;
}
private static final int[] classModifiers = {
ACC_PUBLIC, ACC_FINAL, ACC_ABSTRACT, ACC_MODULE
};
private static final int[] classFlags = {
ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_INTERFACE, ACC_ABSTRACT,
ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM, ACC_MODULE
};
public Set<String> getClassModifiers() {
int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
return getModifiers(f, classModifiers, Type.Class);
}
public Set<String> getClassFlags() {
return getFlags(classFlags, Type.Class);
}
private static final int[] innerClassModifiers = {
ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
ACC_ABSTRACT, ACC_MODULE
};
private static final int[] innerClassFlags = {
ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL, ACC_SUPER,
ACC_INTERFACE, ACC_ABSTRACT, ACC_SYNTHETIC, ACC_ANNOTATION, ACC_ENUM, ACC_MODULE
};
public Set<String> getInnerClassModifiers() {
int f = ((flags & ACC_INTERFACE) != 0 ? flags & ~ACC_ABSTRACT : flags);
return getModifiers(f, innerClassModifiers, Type.InnerClass);
}
public Set<String> getInnerClassFlags() {
return getFlags(innerClassFlags, Type.InnerClass);
}
private static final int[] fieldModifiers = {
ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
ACC_VOLATILE, ACC_TRANSIENT, ACC_MODULE
};
private static final int[] fieldFlags = {
ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
ACC_VOLATILE, ACC_TRANSIENT, ACC_SYNTHETIC, ACC_ENUM, ACC_MODULE
};
public Set<String> getFieldModifiers() {
return getModifiers(fieldModifiers, Type.Field);
}
public Set<String> getFieldFlags() {
return getFlags(fieldFlags, Type.Field);
}
private static final int[] methodModifiers = {
ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
ACC_SYNCHRONIZED, ACC_NATIVE, ACC_ABSTRACT, ACC_STRICT, ACC_MODULE
};
private static final int[] methodFlags = {
ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED, ACC_STATIC, ACC_FINAL,
ACC_SYNCHRONIZED, ACC_BRIDGE, ACC_VARARGS, ACC_NATIVE, ACC_ABSTRACT,
ACC_STRICT, ACC_SYNTHETIC, ACC_MODULE
};
public Set<String> getMethodModifiers() {
return getModifiers(methodModifiers, Type.Method);
}
public Set<String> getMethodFlags() {
return getFlags(methodFlags, Type.Method);
}
private Set<String> getModifiers(int[] modifierFlags, Type t) {
return getModifiers(flags, modifierFlags, t);
}
private static Set<String> getModifiers(int flags, int[] modifierFlags, Type t) {
Set<String> s = new LinkedHashSet<String>();
for (int m: modifierFlags) {
if ((flags & m) != 0)
s.add(flagToModifier(m, t));
}
return s;
}
private Set<String> getFlags(int[] expectedFlags, Type t) {
Set<String> s = new LinkedHashSet<String>();
int f = flags;
for (int e: expectedFlags) {
if ((f & e) != 0) {
s.add(flagToName(e, t));
f = f & ~e;
}
}
while (f != 0) {
int bit = Integer.highestOneBit(f);
s.add("0x" + Integer.toHexString(bit));
f = f & ~bit;
}
return s;
}
private static String flagToModifier(int flag, Type t) {
switch (flag) {
case ACC_PUBLIC:
return "public";
case ACC_PRIVATE:
return "private";
case ACC_PROTECTED:
return "protected";
case ACC_STATIC:
return "static";
case ACC_FINAL:
return "final";
case ACC_SYNCHRONIZED:
return "synchronized";
case 0x80:
return (t == Type.Field ? "transient" : null);
case ACC_VOLATILE:
return "volatile";
case ACC_NATIVE:
return "native";
case ACC_ABSTRACT:
return "abstract";
case ACC_STRICT:
return "strictfp";
case ACC_MODULE:
return "module";
default:
return null;
}
}
private static String flagToName(int flag, Type t) {
switch (flag) {
case ACC_PUBLIC:
return "ACC_PUBLIC";
case ACC_PRIVATE:
return "ACC_PRIVATE";
case ACC_PROTECTED:
return "ACC_PROTECTED";
case ACC_STATIC:
return "ACC_STATIC";
case ACC_FINAL:
return "ACC_FINAL";
case 0x20:
return (t == Type.Class ? "ACC_SUPER" : "ACC_SYNCHRONIZED");
case 0x40:
return (t == Type.Field ? "ACC_VOLATILE" : "ACC_BRIDGE");
case 0x80:
return (t == Type.Field ? "ACC_TRANSIENT" : "ACC_VARARGS");
case ACC_NATIVE:
return "ACC_NATIVE";
case ACC_INTERFACE:
return "ACC_INTERFACE";
case ACC_ABSTRACT:
return "ACC_ABSTRACT";
case ACC_STRICT:
return "ACC_STRICT";
case ACC_SYNTHETIC:
return "ACC_SYNTHETIC";
case ACC_ANNOTATION:
return "ACC_ANNOTATION";
case ACC_ENUM:
return "ACC_ENUM";
case ACC_MODULE:
return "ACC_MODULE";
default:
return null;
}
}
final int flags;
}