Thu, 09 Oct 2008 16:19:13 +0100
6731573: diagnostic output should optionally include source line
Summary: Added an -XD option to optionally prints out source lines in error messages
Reviewed-by: jjg
1 /*
2 * Copyright 2005-2008 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 */
26 package com.sun.tools.javac.util;
28 import java.util.HashMap;
29 import java.util.Locale;
30 import java.util.Map;
31 import javax.tools.JavaFileObject;
33 import static com.sun.tools.javac.util.BasicDiagnosticFormatter.BasicFormatKind.*;
34 import static com.sun.tools.javac.api.DiagnosticFormatter.PositionKind.*;
36 /**
37 * A basic formatter for diagnostic messages.
38 * The basic formatter will format a diagnostic according to one of three format patterns, depending on whether
39 * or not the source name and position are set. The formatter supports a printf-like string for patterns
40 * with the following special characters:
41 * <ul>
42 * <li>%b: the base of the source name
43 * <li>%f: the source name (full absolute path)
44 * <li>%l: the line number of the diagnostic, derived from the character offset
45 * <li>%c: the column number of the diagnostic, derived from the character offset
46 * <li>%o: the character offset of the diagnostic if set
47 * <li>%p: the prefix for the diagnostic, derived from the diagnostic type
48 * <li>%t: the prefix as it normally appears in standard diagnostics. In this case, no prefix is
49 * shown if the type is ERROR and if a source name is set
50 * <li>%m: the text or the diagnostic, including any appropriate arguments
51 * <li>%_: space delimiter, useful for formatting purposes
52 * </ul>
53 */
54 public class BasicDiagnosticFormatter extends AbstractDiagnosticFormatter {
56 protected Map<BasicFormatKind, String> availableFormats;
58 /**
59 * Create a basic formatter based on the supplied options.
60 *
61 * @param opts list of command-line options
62 * @param msgs JavacMessages object used for i18n
63 */
64 BasicDiagnosticFormatter(Options opts, JavacMessages msgs) {
65 super(msgs, opts, true);
66 initAvailableFormats();
67 String fmt = opts.get("diags");
68 if (fmt != null) {
69 String[] formats = fmt.split("\\|");
70 switch (formats.length) {
71 case 3:
72 availableFormats.put(DEFAULT_CLASS_FORMAT, formats[2]);
73 case 2:
74 availableFormats.put(DEFAULT_NO_POS_FORMAT, formats[1]);
75 default:
76 availableFormats.put(DEFAULT_POS_FORMAT, formats[0]);
77 }
78 }
79 }
81 /**
82 * Create a standard basic formatter
83 *
84 * @param msgs JavacMessages object used for i18n
85 */
86 public BasicDiagnosticFormatter(JavacMessages msgs) {
87 super(msgs, true);
88 initAvailableFormats();
89 }
91 public void initAvailableFormats() {
92 availableFormats = new HashMap<BasicFormatKind, String>();
93 availableFormats.put(DEFAULT_POS_FORMAT, "%f:%l:%_%t%m");
94 availableFormats.put(DEFAULT_NO_POS_FORMAT, "%p%m");
95 availableFormats.put(DEFAULT_CLASS_FORMAT, "%f:%_%t%m");
96 }
98 public String format(JCDiagnostic d, Locale l) {
99 if (l == null)
100 l = messages.getCurrentLocale();
101 String format = selectFormat(d);
102 StringBuilder buf = new StringBuilder();
103 for (int i = 0; i < format.length(); i++) {
104 char c = format.charAt(i);
105 boolean meta = false;
106 if (c == '%' && i < format.length() - 1) {
107 meta = true;
108 c = format.charAt(++i);
109 }
110 buf.append(meta ? formatMeta(c, d, l) : String.valueOf(c));
111 }
112 if (displaySource(d)) {
113 buf.append("\n" + formatSourceLine(d));
114 }
115 return buf.toString();
116 }
118 protected String formatMeta(char c, JCDiagnostic d, Locale l) {
119 switch (c) {
120 case 'b':
121 return formatSource(d, false, l);
122 case 'e':
123 return formatPosition(d, END, l);
124 case 'f':
125 return formatSource(d, true, l);
126 case 'l':
127 return formatPosition(d, LINE, l);
128 case 'c':
129 return formatPosition(d, COLUMN, l);
130 case 'o':
131 return formatPosition(d, OFFSET, l);
132 case 'p':
133 return formatKind(d, l);
134 case 's':
135 return formatPosition(d, START, l);
136 case 't': {
137 boolean usePrefix;
138 switch (d.getType()) {
139 case FRAGMENT:
140 usePrefix = false;
141 break;
142 case ERROR:
143 usePrefix = (d.getIntPosition() == Position.NOPOS);
144 break;
145 default:
146 usePrefix = true;
147 }
148 if (usePrefix)
149 return formatKind(d, l);
150 else
151 return "";
152 }
153 case 'm':
154 return formatMessage(d, l);
155 case '_':
156 return " ";
157 case '%':
158 return "%";
159 default:
160 return String.valueOf(c);
161 }
162 }
164 private String selectFormat(JCDiagnostic d) {
165 DiagnosticSource source = d.getDiagnosticSource();
166 String format = availableFormats.get(DEFAULT_NO_POS_FORMAT);
167 if (source != null) {
168 if (d.getIntPosition() != Position.NOPOS) {
169 format = availableFormats.get(DEFAULT_POS_FORMAT);
170 } else if (source.getFile() != null &&
171 source.getFile().getKind() == JavaFileObject.Kind.CLASS) {
172 format = availableFormats.get(DEFAULT_CLASS_FORMAT);
173 }
174 }
175 return format;
176 }
178 /**
179 * This enum contains all the kinds of formatting patterns supported
180 * by a basic diagnostic formatter.
181 */
182 public enum BasicFormatKind {
183 /**
184 * A format string to be used for diagnostics with a given position.
185 */
186 DEFAULT_POS_FORMAT,
187 /**
188 * A format string to be used for diagnostics without a given position.
189 */
190 DEFAULT_NO_POS_FORMAT,
191 /**
192 * A format string to be used for diagnostics regarding classfiles
193 */
194 DEFAULT_CLASS_FORMAT;
195 }
196 }