45N/A/*
553N/A * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved.
45N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
45N/A *
45N/A * This code is free software; you can redistribute it and/or modify it
45N/A * under the terms of the GNU General Public License version 2 only, as
553N/A * published by the Free Software Foundation. Oracle designates this
45N/A * particular file as subject to the "Classpath" exception as provided
553N/A * by Oracle in the LICENSE file that accompanied this code.
45N/A *
45N/A * This code is distributed in the hope that it will be useful, but WITHOUT
45N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
45N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
45N/A * version 2 for more details (a copy is included in the LICENSE file that
45N/A * accompanied this code).
45N/A *
45N/A * You should have received a copy of the GNU General Public License version
45N/A * 2 along with this work; if not, write to the Free Software Foundation,
45N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
45N/A *
553N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
553N/A * or visit www.oracle.com if you need additional information or have any
553N/A * questions.
45N/A */
45N/A
45N/Apackage com.sun.tools.javap;
45N/A
45N/Aimport java.io.PrintWriter;
45N/A
45N/Aimport com.sun.tools.classfile.AttributeException;
45N/Aimport com.sun.tools.classfile.ConstantPoolException;
45N/Aimport com.sun.tools.classfile.DescriptorException;
45N/A
45N/A/*
45N/A * A writer similar to a PrintWriter but which does not hide exceptions.
45N/A * The standard print calls are line-buffered; report calls write messages directly.
45N/A *
580N/A * <p><b>This is NOT part of any supported API.
580N/A * If you write code that depends on this, you do so at your own risk.
45N/A * This code and its internal interfaces are subject to change or
45N/A * deletion without notice.</b>
45N/A */
45N/Apublic class BasicWriter {
45N/A protected BasicWriter(Context context) {
45N/A lineWriter = LineWriter.instance(context);
45N/A out = context.get(PrintWriter.class);
282N/A messages = context.get(Messages.class);
282N/A if (messages == null)
282N/A throw new AssertionError();
45N/A }
45N/A
45N/A protected void print(String s) {
45N/A lineWriter.print(s);
45N/A }
45N/A
45N/A protected void print(Object o) {
45N/A lineWriter.print(o == null ? null : o.toString());
45N/A }
45N/A
45N/A protected void println() {
45N/A lineWriter.println();
45N/A }
45N/A
45N/A protected void println(String s) {
45N/A lineWriter.print(s);
45N/A lineWriter.println();
45N/A }
45N/A
45N/A protected void println(Object o) {
45N/A lineWriter.print(o == null ? null : o.toString());
45N/A lineWriter.println();
45N/A }
45N/A
347N/A protected void indent(int delta) {
347N/A lineWriter.indent(delta);
347N/A }
347N/A
347N/A protected void tab() {
347N/A lineWriter.tab();
347N/A }
347N/A
347N/A protected void setPendingNewline(boolean b) {
347N/A lineWriter.pendingNewline = b;
347N/A }
347N/A
45N/A protected String report(AttributeException e) {
45N/A out.println("Error: " + e.getMessage()); // i18n?
45N/A return "???";
45N/A }
45N/A
45N/A protected String report(ConstantPoolException e) {
45N/A out.println("Error: " + e.getMessage()); // i18n?
45N/A return "???";
45N/A }
45N/A
45N/A protected String report(DescriptorException e) {
45N/A out.println("Error: " + e.getMessage()); // i18n?
45N/A return "???";
45N/A }
45N/A
45N/A protected String report(String msg) {
45N/A out.println("Error: " + msg); // i18n?
45N/A return "???";
45N/A }
45N/A
282N/A protected String space(int w) {
282N/A if (w < spaces.length && spaces[w] != null)
282N/A return spaces[w];
282N/A
282N/A StringBuilder sb = new StringBuilder();
282N/A for (int i = 0; i < w; i++)
282N/A sb.append(" ");
282N/A
282N/A String s = sb.toString();
282N/A if (w < spaces.length)
282N/A spaces[w] = s;
282N/A
282N/A return s;
282N/A }
282N/A
282N/A private String[] spaces = new String[80];
282N/A
45N/A private LineWriter lineWriter;
45N/A private PrintWriter out;
282N/A protected Messages messages;
45N/A
45N/A private static class LineWriter {
45N/A static LineWriter instance(Context context) {
45N/A LineWriter instance = context.get(LineWriter.class);
45N/A if (instance == null)
45N/A instance = new LineWriter(context);
45N/A return instance;
45N/A }
45N/A
45N/A protected LineWriter(Context context) {
45N/A context.put(LineWriter.class, this);
347N/A Options options = Options.instance(context);
347N/A indentWidth = options.indentWidth;
347N/A tabColumn = options.tabColumn;
45N/A out = context.get(PrintWriter.class);
45N/A buffer = new StringBuilder();
45N/A }
45N/A
45N/A protected void print(String s) {
347N/A if (pendingNewline) {
347N/A println();
347N/A pendingNewline = false;
347N/A }
45N/A if (s == null)
45N/A s = "null";
45N/A for (int i = 0; i < s.length(); i++) {
45N/A char c = s.charAt(i);
347N/A switch (c) {
347N/A case '\n':
347N/A println();
347N/A break;
347N/A default:
347N/A if (buffer.length() == 0)
347N/A indent();
347N/A buffer.append(c);
45N/A }
45N/A }
45N/A
45N/A }
45N/A
45N/A protected void println() {
45N/A out.println(buffer);
45N/A buffer.setLength(0);
45N/A }
45N/A
347N/A protected void indent(int delta) {
347N/A indentCount += delta;
347N/A }
347N/A
347N/A protected void tab() {
347N/A if (buffer.length() == 0)
347N/A indent();
347N/A space(indentCount * indentWidth + tabColumn - buffer.length());
347N/A }
347N/A
347N/A private void indent() {
347N/A space(indentCount * indentWidth);
347N/A }
347N/A
347N/A private void space(int n) {
347N/A for (int i = 0; i < n; i++)
347N/A buffer.append(' ');
347N/A }
347N/A
45N/A private PrintWriter out;
45N/A private StringBuilder buffer;
347N/A private int indentCount;
347N/A private int indentWidth;
347N/A private int tabColumn;
347N/A private boolean pendingNewline;
45N/A }
45N/A}
45N/A