Source Code Cross Referenced for DiagnosticFormatter.java in  » 6.0-JDK-Modules-sun » javac-compiler » com » sun » tools » javac » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules sun » javac compiler » com.sun.tools.javac.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
003:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004:         *
005:         * This code is free software; you can redistribute it and/or modify it
006:         * under the terms of the GNU General Public License version 2 only, as
007:         * published by the Free Software Foundation.  Sun designates this
008:         * particular file as subject to the "Classpath" exception as provided
009:         * by Sun in the LICENSE file that accompanied this code.
010:         *
011:         * This code is distributed in the hope that it will be useful, but WITHOUT
012:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013:         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014:         * version 2 for more details (a copy is included in the LICENSE file that
015:         * accompanied this code).
016:         *
017:         * You should have received a copy of the GNU General Public License version
018:         * 2 along with this work; if not, write to the Free Software Foundation,
019:         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020:         *
021:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022:         * CA 95054 USA or visit www.sun.com if you need additional information or
023:         * have any questions.
024:         */
025:
026:        package com.sun.tools.javac.util;
027:
028:        import javax.tools.JavaFileObject;
029:
030:        import com.sun.tools.javac.util.JCDiagnostic.DiagnosticSource;
031:        import com.sun.tools.javac.util.JCDiagnostic.DiagnosticType;
032:
033:        /** 
034:         * A formatter for diagnostic messages.
035:         * The formatter will format a diagnostic according to one of two format strings, depending on whether
036:         * or not the source name and position are set. The format is a printf-like string,
037:         * with the following special characters:
038:         * <ul>
039:         * <li>%b: the base of the source name, or "-" if not set
040:         * <li>%f: the source name, or "-" if not set
041:         * <li>%l: the line number of the diagnostic, derived from the character offset if set, or "-" otherwise
042:         * <li>%c: the column number of the diagnostic, derived from the character offset if set, or "-" otherwise
043:         * <li>%o: the character offset of the diagnostic if set, or "-" otherwise
044:         * <li>%p: the prefix for the diagnostic, derived from the diagnostic type
045:         * <li>%t: the prefix as it normally appears in standard diagnostics. In this case, no prefix is
046:         *        shown if the type is ERROR and if a source name is set
047:         * <li>%m: the text or the diagnostic, including any appropriate arguments
048:         * </ul>
049:         */
050:        @Version("@(#)DiagnosticFormatter.java	1.19 07/05/05")
051:        public class DiagnosticFormatter {
052:            /**
053:             * A format string to be used for diagnostics with a given position.
054:             */
055:            protected String posFormat;
056:
057:            /**
058:             * A format string to be used for diagnostics regarding classfiles
059:             */
060:            protected String classFormat = DEFAULT_CLASS_FORMAT;
061:
062:            /**
063:             * A format string to be used for diagnostics without a given position.
064:             */
065:            protected String noPosFormat;
066:
067:            /**
068:             * A value to indicate whether to output the i18n key and args, instead of 
069:             * the derived l10n message.
070:             */
071:            protected boolean raw;
072:
073:            /** The context key for the formatter. */
074:            protected static final Context.Key<DiagnosticFormatter> formatterKey = new Context.Key<DiagnosticFormatter>();
075:
076:            /** Get the DiagnosticFormatter instance for this context. */
077:            public static DiagnosticFormatter instance(Context context) {
078:                DiagnosticFormatter instance = context.get(formatterKey);
079:                if (instance == null)
080:                    instance = new DiagnosticFormatter(context);
081:                return instance;
082:            }
083:
084:            /**
085:             * Create a formatter based on the supplied options.
086:             */
087:            protected DiagnosticFormatter(Context context) {
088:                Options options = Options.instance(context);
089:                raw = options.get("rawDiagnostics") != null;
090:                String fmt = options.get("diags");
091:                if (fmt != null) {
092:                    int sep = fmt.indexOf('|');
093:                    if (sep == -1)
094:                        posFormat = noPosFormat = fmt;
095:                    else {
096:                        posFormat = fmt.substring(0, sep);
097:                        noPosFormat = fmt.substring(sep + 1);
098:                    }
099:                } else {
100:                    posFormat = DEFAULT_POS_FORMAT;
101:                    noPosFormat = DEFAULT_NO_POS_FORMAT;
102:                }
103:            }
104:
105:            public static final String DEFAULT_POS_FORMAT = "%f:%l: %t%m";
106:            public static final String DEFAULT_CLASS_FORMAT = "%f: %t%m";
107:            public static final String DEFAULT_NO_POS_FORMAT = "%p%m";
108:
109:            public DiagnosticFormatter() {
110:                posFormat = DEFAULT_POS_FORMAT;
111:                noPosFormat = DEFAULT_NO_POS_FORMAT;
112:                raw = false;
113:            }
114:
115:            public DiagnosticFormatter(String pos, String noPos) {
116:                posFormat = pos;
117:                noPosFormat = noPos;
118:                raw = false;
119:            }
120:
121:            String format(JCDiagnostic d) {
122:                return (raw ? format_raw(d) : format_std(d));
123:            }
124:
125:            private String format_raw(JCDiagnostic d) {
126:                DiagnosticSource source = d.getDiagnosticSource();
127:                int position = d.getIntPosition();
128:
129:                StringBuilder sb = new StringBuilder();
130:                if (position == Position.NOPOS)
131:                    sb.append("-");
132:                else {
133:                    sb.append(source.getName() + ":"
134:                            + source.getLineNumber(position) + ":"
135:                            + source.getColumnNumber(position) + ":");
136:                }
137:                sb.append(" ");
138:                sb.append(d.getCode());
139:                String sep = ": ";
140:                for (Object arg : d.getArgs()) {
141:                    sb.append(sep);
142:                    if (arg instanceof  JCDiagnostic) {
143:                        sb.append('(');
144:                        sb.append(format_raw((JCDiagnostic) arg));
145:                        sb.append(')');
146:                    } else if (arg instanceof  JavaFileObject)
147:                        sb.append(JavacFileManager
148:                                .getJavacBaseFileName((JavaFileObject) arg));
149:                    else
150:                        sb.append(arg);
151:                    sep = ", ";
152:                }
153:                return sb.toString();
154:            }
155:
156:            private String format_std(JCDiagnostic d) {
157:                DiagnosticSource source = d.getDiagnosticSource();
158:                DiagnosticType type = d.getType();
159:                int position = d.getIntPosition();
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
184:                                    .valueOf(d.getEndPosition()));
185:                            break;
186:
187:                        case 'f':
188:                            sb.append(source == null ? "-" : d.getSourceName());
189:                            break;
190:
191:                        case 'l':
192:                            sb.append(position == Position.NOPOS ? "-" : String
193:                                    .valueOf(d.getLineNumber()));
194:                            break;
195:
196:                        case 'c':
197:                            sb.append(position == Position.NOPOS ? "-" : String
198:                                    .valueOf(d.getColumnNumber()));
199:                            break;
200:
201:                        case 'o':
202:                            sb.append(position == Position.NOPOS ? "-" : String
203:                                    .valueOf(position));
204:                            break;
205:
206:                        case 'p':
207:                            sb.append(d.getPrefix());
208:                            break;
209:
210:                        case 's':
211:                            sb.append(position == Position.NOPOS ? "-" : String
212:                                    .valueOf(d.getStartPosition()));
213:                            break;
214:
215:                        case 't': {
216:                            boolean usePrefix;
217:                            switch (type) {
218:                            case FRAGMENT:
219:                                usePrefix = false;
220:                                break;
221:
222:                            case ERROR:
223:                                usePrefix = (position == Position.NOPOS);
224:                                break;
225:
226:                            default:
227:                                usePrefix = true;
228:                            }
229:
230:                            if (usePrefix)
231:                                sb.append(d.getPrefix());
232:                            break;
233:                        }
234:
235:                        case 'm':
236:                            sb.append(d.getMessage(null));
237:                            break;
238:
239:                        case '_':
240:                            sb.append(' ');
241:                            break;
242:
243:                        case '%':
244:                            sb.append('%');
245:                            break;
246:
247:                        default:
248:                            sb.append(c);
249:                            break;
250:                        }
251:                    } else
252:                        sb.append(c);
253:                }
254:                return sb.toString();
255:            }
256:        }
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