| 1 | /* |
| 2 | * Copyright 2005-2006 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.javac.util; |
| 27 | |
| 28 | import javax.tools.JavaFileObject; |
| 29 | |
| 30 | import com.sun.tools.javac.util.JCDiagnostic.DiagnosticSource; |
| 31 | import com.sun.tools.javac.util.JCDiagnostic.DiagnosticType; |
| 32 | |
| 33 | /** |
| 34 | * A formatter for diagnostic messages. |
| 35 | * The formatter will format a diagnostic according to one of two format strings, depending on whether |
| 36 | * or not the source name and position are set. The format is a printf-like string, |
| 37 | * with the following special characters: |
| 38 | * <ul> |
| 39 | * <li>%b: the base of the source name, or "-" if not set |
| 40 | * <li>%f: the source name, or "-" if not set |
| 41 | * <li>%l: the line number of the diagnostic, derived from the character offset if set, or "-" otherwise |
| 42 | * <li>%c: the column number of the diagnostic, derived from the character offset if set, or "-" otherwise |
| 43 | * <li>%o: the character offset of the diagnostic if set, or "-" otherwise |
| 44 | * <li>%p: the prefix for the diagnostic, derived from the diagnostic type |
| 45 | * <li>%t: the prefix as it normally appears in standard diagnostics. In this case, no prefix is |
| 46 | * shown if the type is ERROR and if a source name is set |
| 47 | * <li>%m: the text or the diagnostic, including any appropriate arguments |
| 48 | * </ul> |
| 49 | */ |
| 50 | public class DiagnosticFormatter { |
| 51 | /** |
| 52 | * A format string to be used for diagnostics with a given position. |
| 53 | */ |
| 54 | protected String posFormat; |
| 55 | |
| 56 | /** |
| 57 | * A format string to be used for diagnostics regarding classfiles |
| 58 | */ |
| 59 | protected String classFormat = DEFAULT_CLASS_FORMAT; |
| 60 | |
| 61 | /** |
| 62 | * A format string to be used for diagnostics without a given position. |
| 63 | */ |
| 64 | protected String noPosFormat; |
| 65 | |
| 66 | /** |
| 67 | * A value to indicate whether to output the i18n key and args, instead of |
| 68 | * the derived l10n message. |
| 69 | */ |
| 70 | protected boolean raw; |
| 71 | |
| 72 | /** The context key for the formatter. */ |
| 73 | protected static final Context.Key<DiagnosticFormatter> formatterKey = |
| 74 | new Context.Key<DiagnosticFormatter>(); |
| 75 | |
| 76 | /** Get the DiagnosticFormatter instance for this context. */ |
| 77 | public static DiagnosticFormatter instance(Context context) { |
| 78 | DiagnosticFormatter instance = context.get(formatterKey); |
| 79 | if (instance == null) |
| 80 | instance = new DiagnosticFormatter(context); |
| 81 | return instance; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Create a formatter based on the supplied options. |
| 86 | */ |
| 87 | protected DiagnosticFormatter(Context context) { |
| 88 | Options options = Options.instance(context); |
| 89 | raw = options.get("rawDiagnostics") != null; |
| 90 | String fmt = options.get("diags"); |
| 91 | if (fmt != null) { |
| 92 | int sep = fmt.indexOf('|'); |
| 93 | if (sep == -1) |
| 94 | posFormat = noPosFormat = fmt; |
| 95 | else { |
| 96 | posFormat = fmt.substring(0, sep); |
| 97 | noPosFormat = fmt.substring(sep + 1); |
| 98 | } |
| 99 | } |
| 100 | else { |
| 101 | posFormat = DEFAULT_POS_FORMAT; |
| 102 | noPosFormat = DEFAULT_NO_POS_FORMAT; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | public static final String DEFAULT_POS_FORMAT = "%f:%l: %t%m"; |
| 107 | public static final String DEFAULT_CLASS_FORMAT = "%f: %t%m"; |
| 108 | public static final String DEFAULT_NO_POS_FORMAT = "%p%m"; |
| 109 | |
| 110 | public DiagnosticFormatter() { |
| 111 | posFormat = DEFAULT_POS_FORMAT; |
| 112 | noPosFormat = DEFAULT_NO_POS_FORMAT; |
| 113 | raw = false; |
| 114 | } |
| 115 | |
| 116 | public DiagnosticFormatter(String pos, String noPos) { |
| 117 | posFormat = pos; |
| 118 | noPosFormat = noPos; |
| 119 | raw = false; |
| 120 | } |
| 121 | |
| 122 | String format(JCDiagnostic d) { |
| 123 | return (raw ? format_raw(d) : format_std(d)); |
| 124 | } |
| 125 | |
| 126 | private String format_raw(JCDiagnostic d) { |
| 127 | DiagnosticSource source = d.getDiagnosticSource(); |
| 128 | int position = d.getIntPosition(); |
| 129 | |
| 130 | StringBuilder sb = new StringBuilder(); |
| 131 | if (position == Position.NOPOS) |
| 132 | sb.append("-"); |
| 133 | else { |
| 134 | sb.append(source.getName() + ":" + source.getLineNumber(position) + ":" + source.getColumnNumber(position) + ":"); |
| 135 | } |
| 136 | sb.append(" "); |
| 137 | sb.append(d.getCode()); |
| 138 | String sep = ": "; |
| 139 | for (Object arg: d.getArgs()) { |
| 140 | sb.append(sep); |
| 141 | if (arg instanceof JCDiagnostic) { |
| 142 | sb.append('('); |
| 143 | sb.append(format_raw((JCDiagnostic) arg)); |
| 144 | sb.append(')'); |
| 145 | } |
| 146 | else if (arg instanceof JavaFileObject) |
| 147 | sb.append(JavacFileManager.getJavacBaseFileName((JavaFileObject) arg)); |
| 148 | else |
| 149 | sb.append(arg); |
| 150 | sep = ", "; |
| 151 | } |
| 152 | return sb.toString(); |
| 153 | } |
| 154 | |
| 155 | private String format_std(JCDiagnostic d) { |
| 156 | DiagnosticSource source = d.getDiagnosticSource(); |
| 157 | DiagnosticType type = d.getType(); |
| 158 | int position = d.getIntPosition(); |
| 159 | |
| 160 | |
| 161 | String format = noPosFormat; |
| 162 | if (source != null) { |
| 163 | if (position != Position.NOPOS) { |
| 164 | format = posFormat; |
| 165 | } else if (source.getFile() != null && |
| 166 | source.getFile().getKind() == JavaFileObject.Kind.CLASS) { |
| 167 | format = classFormat; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | StringBuilder sb = new StringBuilder(); |
| 172 | |
| 173 | for (int i = 0; i < format.length(); i++) { |
| 174 | char c = format.charAt(i); |
| 175 | if (c == '%' && i < format.length() - 1) { |
| 176 | c = format.charAt(++i); |
| 177 | switch (c) { |
| 178 | case 'b': |
| 179 | sb.append(source == null ? "-" : source.getName()); |
| 180 | break; |
| 181 | |
| 182 | case 'e': |
| 183 | sb.append(position == Position.NOPOS ? "-" : String.valueOf(d.getEndPosition())); |
| 184 | break; |
| 185 | |
| 186 | case 'f': |
| 187 | sb.append(source == null ? "-" : d.getSourceName()); |
| 188 | break; |
| 189 | |
| 190 | case 'l': |
| 191 | sb.append(position == Position.NOPOS ? "-" : String.valueOf(d.getLineNumber())); |
| 192 | break; |
| 193 | |
| 194 | case 'c': |
| 195 | sb.append(position == Position.NOPOS ? "-" : String.valueOf(d.getColumnNumber())); |
| 196 | break; |
| 197 | |
| 198 | case 'o': |
| 199 | sb.append(position == Position.NOPOS ? "-" : String.valueOf(position)); |
| 200 | break; |
| 201 | |
| 202 | case 'p': |
| 203 | sb.append(d.getPrefix()); |
| 204 | break; |
| 205 | |
| 206 | case 's': |
| 207 | sb.append(position == Position.NOPOS ? "-" : String.valueOf(d.getStartPosition())); |
| 208 | break; |
| 209 | |
| 210 | case 't': { |
| 211 | boolean usePrefix; |
| 212 | switch (type) { |
| 213 | case FRAGMENT: |
| 214 | usePrefix = false; |
| 215 | break; |
| 216 | |
| 217 | case ERROR: |
| 218 | usePrefix = (position == Position.NOPOS); |
| 219 | break; |
| 220 | |
| 221 | default: |
| 222 | usePrefix = true; |
| 223 | } |
| 224 | |
| 225 | if (usePrefix) |
| 226 | sb.append(d.getPrefix()); |
| 227 | break; |
| 228 | } |
| 229 | |
| 230 | case 'm': |
| 231 | sb.append(d.getMessage(null)); |
| 232 | break; |
| 233 | |
| 234 | case '_': |
| 235 | sb.append(' '); |
| 236 | break; |
| 237 | |
| 238 | case '%': |
| 239 | sb.append('%'); |
| 240 | break; |
| 241 | |
| 242 | default: |
| 243 | sb.append(c); |
| 244 | break; |
| 245 | } |
| 246 | } |
| 247 | else |
| 248 | sb.append(c); |
| 249 | } |
| 250 | return sb.toString(); |
| 251 | } |
| 252 | } |