Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * 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.javap;

 import java.io.PrintWriter;

 import com.sun.tools.classfile.AttributeException;

 import com.sun.tools.classfile.ConstantPoolException;

 import com.sun.tools.classfile.DescriptorException;

 /*

  *  A writer similar to a PrintWriter but which does not hide exceptions.

  *  The standard print calls are line-buffered; report calls write messages directly.

  *

  *  <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 BasicWriter {

     protected BasicWriter(Context context) {

         lineWriter = LineWriter.instance(context);

         out = context.get(PrintWriter.class);

     }

     protected void print(String s) {

         lineWriter.print(s);

     }

     protected void print(Object o) {

         lineWriter.print(o == null ? null : o.toString());

     }

     protected void println() {

         lineWriter.println();

     }

     protected void println(String s) {

         lineWriter.print(s);

         lineWriter.println();

     }

     protected void println(Object o) {

         lineWriter.print(o == null ? null : o.toString());

         lineWriter.println();

     }

     protected String report(AttributeException e) {

         out.println("Error: " + e.getMessage()); // i18n?

         return "???";

     }

     protected String report(ConstantPoolException e) {

         out.println("Error: " + e.getMessage()); // i18n?

         return "???";

     }

     protected String report(DescriptorException e) {

         out.println("Error: " + e.getMessage()); // i18n?

         return "???";

     }

     protected String report(String msg) {

         out.println("Error: " + msg); // i18n?

         return "???";

     }

     private LineWriter lineWriter;

     private PrintWriter out;

     private static class LineWriter {

         static LineWriter instance(Context context) {

             LineWriter instance = context.get(LineWriter.class);

             if (instance == null)

                 instance = new LineWriter(context);

             return instance;

         }

         protected LineWriter(Context context) {

             context.put(LineWriter.class, this);

             out = context.get(PrintWriter.class);

             buffer = new StringBuilder();

         }

         protected void print(String s) {

             if (s == null)

                 s = "null";

             for (int i = 0; i < s.length(); i++) {

                 char c = s.charAt(i);

                 if (c == '\n') {

                     println();

                 } else {

                     buffer.append(c);

                 }

             }

         }

         protected void println() {

             out.println(buffer);

             buffer.setLength(0);

         }

         private PrintWriter out;

         private StringBuilder buffer;

     }

 }