jdk8-mips64-public/langtools: src/share/classes/sun/tools/javap/Main.java@7708bd6d800d (annotated)

src/share/classes/sun/tools/javap/Main.java@7708bd6d800d (annotated)

src/share/classes/sun/tools/javap/Main.java

Tue, 03 Jun 2008 13:26:47 -0700

author: jjg
date: Tue, 03 Jun 2008 13:26:47 -0700
changeset 46: 7708bd6d800d
parent 37: b8c8259e0d2b
child 54: eaf608c64fec
permissions: -rw-r--r--

4075303: Use javap to enquire aboput a specific inner class
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

 /*
  * Copyright 2002-2003 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 sun.tools.javap;
 import java.util.*;
 import java.io.*;
 /**
  * Entry point for javap, class file disassembler.
  *
  * @author  Sucheta Dambalkar (Adopted code from old javap)
  */
 public class Main {
     private Vector<String> classList = new Vector<String>();
     private PrintWriter out;
     JavapEnvironment env = new JavapEnvironment();
     private static boolean errorOccurred = false;
     private static final String progname = "javap";
     public Main(PrintWriter out){
         this.out = out;
     }
     public static void main(String argv[]) {
         // unless first arg is -Xold, use new javap
         if (!(argv.length >= 1 && argv[0].equals("-Xold"))) {
             com.sun.tools.javap.Main.main(argv);
             return;
         }
         entry(argv);
         if (errorOccurred) {
             System.exit(1);
         }
     }
     /**
      * Entry point for tool if you don't want System.exit() called.
      */
     public static void entry(String argv[]) {
         PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
         try {
             Main jpmain = new Main(out);
             jpmain.perform(argv);
         } finally {
             out.close();
         }
     }
     /**
      * Process the arguments and perform the desired action
      */
     private void perform(String argv[]) {
         if (parseArguments(argv)) {
             displayResults();
         }
     }
     private void error(String msg) {
         errorOccurred = true;
         System.err.println(msg);
         System.err.flush();
     }
     /**
      * Print usage information
      */
     private void usage() {
         java.io.PrintStream out = System.out;
         out.println("Usage: " + progname + " <options> <classes>...");
         out.println();
         out.println("where options include:");
         out.println("   -c                        Disassemble the code");
         out.println("   -classpath <pathlist>     Specify where to find user class files");
         out.println("   -extdirs <dirs>           Override location of installed extensions");
         out.println("   -help                     Print this usage message");
         out.println("   -J<flag>                  Pass <flag> directly to the runtime system");
         out.println("   -l                        Print line number and local variable tables");
         out.println("   -public                   Show only public classes and members");
         out.println("   -protected                Show protected/public classes and members");
         out.println("   -package                  Show package/protected/public classes");
         out.println("                             and members (default)");
         out.println("   -private                  Show all classes and members");
         out.println("   -s                        Print internal type signatures");
         out.println("   -bootclasspath <pathlist> Override location of class files loaded");
         out.println("                             by the bootstrap class loader");
         out.println("   -verbose                  Print stack size, number of locals and args for methods");
         out.println("                             If verifying, print reasons for failure");
         out.println();
     }
     /**
      * Parse the command line arguments.
      * Set flags, construct the class list and create environment.
      */
     private boolean parseArguments(String argv[]) {
         for (int i = 0 ; i < argv.length ; i++) {
             String arg = argv[i];
             if (arg.startsWith("-")) {
                 if (arg.equals("-l")) {
                     env.showLineAndLocal = true;
                 } else if (arg.equals("-private") || arg.equals("-p")) {
                     env.showAccess = env.PRIVATE;
                 } else if (arg.equals("-package")) {
                     env.showAccess = env.PACKAGE;
                 } else if (arg.equals("-protected")) {
                     env.showAccess = env.PROTECTED;
                 } else if (arg.equals("-public")) {
                     env.showAccess = env.PUBLIC;
                 } else if (arg.equals("-c")) {
                     env.showDisassembled = true;
                 } else if (arg.equals("-s")) {
                     env.showInternalSigs = true;
                 } else if (arg.equals("-verbose"))  {
                     env.showVerbose = true;
                 } else if (arg.equals("-v")) {
                     env.showVerbose = true;
                 } else if (arg.equals("-h")) {
                     error("-h is no longer available - use the 'javah' program");
                     return false;
                 } else if (arg.equals("-verify")) {
                     error("-verify is no longer available - use 'java -verify'");
                     return false;
                 } else if (arg.equals("-verify-verbose")) {
                     error("-verify is no longer available - use 'java -verify'");
                     return false;
                 } else if (arg.equals("-help")) {
                     usage();
                     return false;
                 } else if (arg.equals("-classpath")) {
                     if ((i + 1) < argv.length) {
                         env.classPathString = argv[++i];
                     } else {
                         error("-classpath requires argument");
                         usage();
                         return false;
                     }
                 } else if (arg.equals("-bootclasspath")) {
                     if ((i + 1) < argv.length) {
                         env.bootClassPathString = argv[++i];
                     } else {
                         error("-bootclasspath requires argument");
                         usage();
                         return false;
                     }
                 } else if (arg.equals("-extdirs")) {
                     if ((i + 1) < argv.length) {
                         env.extDirsString = argv[++i];
                     } else {
                         error("-extdirs requires argument");
                         usage();
                         return false;
                     }
                 } else if (arg.equals("-all")) {
                     env.showallAttr = true;
                 } else if (arg.equals("-Xold")) {
                     // ignore: this is old javap
                 } else {
                     error("invalid flag: " + arg);
                     usage();
                     return false;
                 }
             } else {
                 classList.addElement(arg);
                 env.nothingToDo = false;
             }
         }
         if (env.nothingToDo) {
             System.out.println("No classes were specified on the command line.  Try -help.");
             errorOccurred = true;
             return false;
         }
         return true;
     }
     /**
      * Display results
      */
     private void displayResults() {
         for (int i = 0; i < classList.size() ; i++ ) {
             String Name = classList.elementAt(i);
             InputStream classin = env.getFileInputStream(Name);
             try {
                 JavapPrinter printer = new JavapPrinter(classin, out, env);
                 printer.print();                // actual do display
             } catch (IllegalArgumentException exc) {
                 error(exc.getMessage());
             }
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/sun/tools/javap/Main.java@7708bd6d800d (annotated)

src/share/classes/sun/tools/javap/Main.java