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

comparison: src/share/classes/com/sun/tools/javap/BasicWriter.java

src/share/classes/com/sun/tools/javap/BasicWriter.java

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1 /*
2 * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package com.sun.tools.javap;
27
28 import java.io.PrintWriter;
29
30 import com.sun.tools.classfile.AttributeException;
31 import com.sun.tools.classfile.ConstantPoolException;
32 import com.sun.tools.classfile.DescriptorException;
33
34 /*
35 * A writer similar to a PrintWriter but which does not hide exceptions.
36 * The standard print calls are line-buffered; report calls write messages directly.
37 *
38 * <p><b>This is NOT part of any API supported by Sun Microsystems. If
39 * you write code that depends on this, you do so at your own risk.
40 * This code and its internal interfaces are subject to change or
41 * deletion without notice.</b>
42 */
43 public class BasicWriter {
44 protected BasicWriter(Context context) {
45 lineWriter = LineWriter.instance(context);
46 out = context.get(PrintWriter.class);
47 }
48
49 protected void print(String s) {
50 lineWriter.print(s);
51 }
52
53 protected void print(Object o) {
54 lineWriter.print(o == null ? null : o.toString());
55 }
56
57 protected void println() {
58 lineWriter.println();
59 }
60
61 protected void println(String s) {
62 lineWriter.print(s);
63 lineWriter.println();
64 }
65
66 protected void println(Object o) {
67 lineWriter.print(o == null ? null : o.toString());
68 lineWriter.println();
69 }
70
71 protected String report(AttributeException e) {
72 out.println("Error: " + e.getMessage()); // i18n?
73 return "???";
74 }
75
76 protected String report(ConstantPoolException e) {
77 out.println("Error: " + e.getMessage()); // i18n?
78 return "???";
79 }
80
81 protected String report(DescriptorException e) {
82 out.println("Error: " + e.getMessage()); // i18n?
83 return "???";
84 }
85
86 protected String report(String msg) {
87 out.println("Error: " + msg); // i18n?
88 return "???";
89 }
90
91 private LineWriter lineWriter;
92 private PrintWriter out;
93
94 private static class LineWriter {
95 static LineWriter instance(Context context) {
96 LineWriter instance = context.get(LineWriter.class);
97 if (instance == null)
98 instance = new LineWriter(context);
99 return instance;
100 }
101
102 protected LineWriter(Context context) {
103 context.put(LineWriter.class, this);
104 out = context.get(PrintWriter.class);
105 buffer = new StringBuilder();
106 }
107
108 protected void print(String s) {
109 if (s == null)
110 s = "null";
111 for (int i = 0; i < s.length(); i++) {
112 char c = s.charAt(i);
113 if (c == '\n') {
114 println();
115 } else {
116 buffer.append(c);
117 }
118 }
119
120 }
121
122 protected void println() {
123 out.println(buffer);
124 buffer.setLength(0);
125 }
126
127 private PrintWriter out;
128 private StringBuilder buffer;
129 }
130 }
131

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