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

 /*

  * Copyright 2005-2008 Sun Microsystems, Inc.  All Rights Reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Sun designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Sun in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

  * CA 95054 USA or visit www.sun.com if you need additional information or

  * have any questions.

  */

 package com.sun.tools.javac.util;

 import java.util.HashMap;

 import java.util.Locale;

 import java.util.Map;

 import javax.tools.JavaFileObject;

 import static com.sun.tools.javac.util.BasicDiagnosticFormatter.BasicFormatKind.*;

 import static com.sun.tools.javac.api.DiagnosticFormatter.PositionKind.*;

 /**

  * A basic formatter for diagnostic messages.

  * The basic formatter will format a diagnostic according to one of three format patterns, depending on whether

  * or not the source name and position are set. The formatter supports a printf-like string for patterns

  * with the following special characters:

  * <ul>

  * <li>%b: the base of the source name

  * <li>%f: the source name (full absolute path)

  * <li>%l: the line number of the diagnostic, derived from the character offset

  * <li>%c: the column number of the diagnostic, derived from the character offset

  * <li>%o: the character offset of the diagnostic if set

  * <li>%p: the prefix for the diagnostic, derived from the diagnostic type

  * <li>%t: the prefix as it normally appears in standard diagnostics. In this case, no prefix is

  *        shown if the type is ERROR and if a source name is set

  * <li>%m: the text or the diagnostic, including any appropriate arguments

  * <li>%_: space delimiter, useful for formatting purposes

  * </ul>

  */

 public class BasicDiagnosticFormatter extends AbstractDiagnosticFormatter {

     protected Map<BasicFormatKind, String> availableFormats;

     /**

      * Create a basic formatter based on the supplied options.

      *

      * @param opts list of command-line options

      * @param msgs JavacMessages object used for i18n

      */

     @SuppressWarnings("fallthrough")

     BasicDiagnosticFormatter(Options opts, JavacMessages msgs) {

         super(msgs, opts, true);

         initAvailableFormats();

         String fmt = opts.get("diags");

         if (fmt != null) {

             String[] formats = fmt.split("\\|");

             switch (formats.length) {

                 case 3:

                     availableFormats.put(DEFAULT_CLASS_FORMAT, formats[2]);

                 case 2:

                     availableFormats.put(DEFAULT_NO_POS_FORMAT, formats[1]);

                 default:

                     availableFormats.put(DEFAULT_POS_FORMAT, formats[0]);

             }

         }

     }

     /**

      * Create a standard basic formatter

      *

      * @param msgs JavacMessages object used for i18n

      */

     public BasicDiagnosticFormatter(JavacMessages msgs) {

         super(msgs, true);

         initAvailableFormats();

     }

     public void initAvailableFormats() {

         availableFormats = new HashMap<BasicFormatKind, String>();

         availableFormats.put(DEFAULT_POS_FORMAT, "%f:%l:%_%t%m");

         availableFormats.put(DEFAULT_NO_POS_FORMAT, "%p%m");

         availableFormats.put(DEFAULT_CLASS_FORMAT, "%f:%_%t%m");

     }

     public String format(JCDiagnostic d, Locale l) {

         if (l == null)

             l = messages.getCurrentLocale();

         String format = selectFormat(d);

         StringBuilder buf = new StringBuilder();

         for (int i = 0; i < format.length(); i++) {

             char c = format.charAt(i);

             boolean meta = false;

             if (c == '%' && i < format.length() - 1) {

                 meta = true;

                 c = format.charAt(++i);

             }

             buf.append(meta ? formatMeta(c, d, l) : String.valueOf(c));

         }

         if (displaySource(d)) {

             buf.append("\n" + formatSourceLine(d));

         }

         return buf.toString();

     }

     protected String formatMeta(char c, JCDiagnostic d, Locale l) {

         switch (c) {

             case 'b':

                 return formatSource(d, false, l);

             case 'e':

                 return formatPosition(d, END, l);

             case 'f':

                 return formatSource(d, true, l);

             case 'l':

                 return formatPosition(d, LINE, l);

             case 'c':

                 return formatPosition(d, COLUMN, l);

             case 'o':

                 return formatPosition(d, OFFSET, l);

             case 'p':

                 return formatKind(d, l);

             case 's':

                 return formatPosition(d, START, l);

             case 't': {

                 boolean usePrefix;

                 switch (d.getType()) {

                 case FRAGMENT:

                     usePrefix = false;

                     break;

                 case ERROR:

                     usePrefix = (d.getIntPosition() == Position.NOPOS);

                     break;

                 default:

                     usePrefix = true;

                 }

                 if (usePrefix)

                     return formatKind(d, l);

                 else

                     return "";

             }

             case 'm':

                 return formatMessage(d, l);

             case '_':

                 return " ";

             case '%':

                 return "%";

             default:

                 return String.valueOf(c);

         }

     }

     private String selectFormat(JCDiagnostic d) {

         DiagnosticSource source = d.getDiagnosticSource();

         String format = availableFormats.get(DEFAULT_NO_POS_FORMAT);

         if (source != null) {

             if (d.getIntPosition() != Position.NOPOS) {

                 format = availableFormats.get(DEFAULT_POS_FORMAT);

             } else if (source.getFile() != null &&

                        source.getFile().getKind() == JavaFileObject.Kind.CLASS) {

                 format = availableFormats.get(DEFAULT_CLASS_FORMAT);

             }

         }

         return format;

     }

     /**

      * This enum contains all the kinds of formatting patterns supported

      * by a basic diagnostic formatter.

      */

     public enum BasicFormatKind {

         /**

         * A format string to be used for diagnostics with a given position.

         */

         DEFAULT_POS_FORMAT,

         /**

         * A format string to be used for diagnostics without a given position.

         */

         DEFAULT_NO_POS_FORMAT,

         /**

         * A format string to be used for diagnostics regarding classfiles

         */

         DEFAULT_CLASS_FORMAT;

     }

 }