Wed, 20 Jun 2012 13:23:26 -0700
7174143: encapsulate doc comment table
Reviewed-by: ksrini, mcimadamore
1 /*
2 * Copyright (c) 2010, 2012, Oracle and/or its affiliates. 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 import com.sun.source.util.TaskEvent;
25 import java.awt.BorderLayout;
26 import java.awt.Color;
27 import java.awt.Dimension;
28 import java.awt.EventQueue;
29 import java.awt.Font;
30 import java.awt.GridBagConstraints;
31 import java.awt.GridBagLayout;
32 import java.awt.Rectangle;
33 import java.awt.event.ActionEvent;
34 import java.awt.event.ActionListener;
35 import java.awt.event.MouseAdapter;
36 import java.awt.event.MouseEvent;
37 import javax.swing.DefaultComboBoxModel;
38 import javax.swing.JComboBox;
39 import javax.swing.JComponent;
40 import javax.swing.JFrame;
41 import javax.swing.JLabel;
42 import javax.swing.JPanel;
43 import javax.swing.JScrollPane;
44 import javax.swing.JTextArea;
45 import javax.swing.JTextField;
46 import javax.swing.SwingUtilities;
47 import javax.swing.event.CaretEvent;
48 import javax.swing.event.CaretListener;
49 import javax.swing.text.BadLocationException;
50 import javax.swing.text.DefaultHighlighter;
51 import javax.swing.text.Highlighter;
52 import java.io.File;
53 import java.io.IOException;
54 import java.io.PrintStream;
55 import java.io.PrintWriter;
56 import java.io.StringWriter;
57 import java.lang.reflect.Field;
58 import java.util.ArrayList;
59 import java.util.List;
60 import javax.tools.Diagnostic;
61 import javax.tools.DiagnosticListener;
62 import javax.tools.JavaFileObject;
63 import javax.tools.StandardJavaFileManager;
65 import com.sun.source.tree.CompilationUnitTree;
66 import com.sun.source.util.JavacTask;
67 import com.sun.source.util.TaskListener;
68 import com.sun.tools.javac.api.JavacTool;
69 import com.sun.tools.javac.code.Symbol;
70 import com.sun.tools.javac.code.Type;
71 import com.sun.tools.javac.tree.EndPosTable;
72 import com.sun.tools.javac.tree.JCTree;
73 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
74 import com.sun.tools.javac.tree.JCTree.JCImport;
75 import com.sun.tools.javac.tree.TreeInfo;
76 import com.sun.tools.javac.tree.TreeScanner;
77 import com.sun.tools.javac.util.Pair;
79 import java.util.Arrays;
80 import java.util.HashSet;
81 import java.util.Set;
82 import javax.lang.model.element.Element;
84 import static com.sun.tools.javac.tree.JCTree.Tag.*;
86 /**
87 * Utility and test program to check validity of tree positions for tree nodes.
88 * The program can be run standalone, or as a jtreg test. In standalone mode,
89 * errors can be displayed in a gui viewer. For info on command line args,
90 * run program with no args.
91 *
92 * <p>
93 * jtreg: Note that by using the -r switch in the test description below, this test
94 * will process all java files in the langtools/test directory, thus implicitly
95 * covering any new language features that may be tested in this test suite.
96 */
98 /*
99 * @test
100 * @bug 6970584
101 * @summary assorted position errors in compiler syntax trees
102 * @run main CheckAttributedTree -q -r -et ERRONEOUS .
103 */
104 public class CheckAttributedTree {
105 /**
106 * Main entry point.
107 * If test.src is set, program runs in jtreg mode, and will throw an Error
108 * if any errors arise, otherwise System.exit will be used, unless the gui
109 * viewer is being used. In jtreg mode, the default base directory for file
110 * args is the value of ${test.src}. In jtreg mode, the -r option can be
111 * given to change the default base directory to the root test directory.
112 */
113 public static void main(String... args) {
114 String testSrc = System.getProperty("test.src");
115 File baseDir = (testSrc == null) ? null : new File(testSrc);
116 boolean ok = new CheckAttributedTree().run(baseDir, args);
117 if (!ok) {
118 if (testSrc != null) // jtreg mode
119 throw new Error("failed");
120 else
121 System.exit(1);
122 }
123 }
125 /**
126 * Run the program. A base directory can be provided for file arguments.
127 * In jtreg mode, the -r option can be given to change the default base
128 * directory to the test root directory. For other options, see usage().
129 * @param baseDir base directory for any file arguments.
130 * @param args command line args
131 * @return true if successful or in gui mode
132 */
133 boolean run(File baseDir, String... args) {
134 if (args.length == 0) {
135 usage(System.out);
136 return true;
137 }
139 List<File> files = new ArrayList<File>();
140 for (int i = 0; i < args.length; i++) {
141 String arg = args[i];
142 if (arg.equals("-encoding") && i + 1 < args.length)
143 encoding = args[++i];
144 else if (arg.equals("-gui"))
145 gui = true;
146 else if (arg.equals("-q"))
147 quiet = true;
148 else if (arg.equals("-v"))
149 verbose = true;
150 else if (arg.equals("-t") && i + 1 < args.length)
151 tags.add(args[++i]);
152 else if (arg.equals("-ef") && i + 1 < args.length)
153 excludeFiles.add(new File(baseDir, args[++i]));
154 else if (arg.equals("-et") && i + 1 < args.length)
155 excludeTags.add(args[++i]);
156 else if (arg.equals("-r")) {
157 if (excludeFiles.size() > 0)
158 throw new Error("-r must be used before -ef");
159 File d = baseDir;
160 while (!new File(d, "TEST.ROOT").exists()) {
161 if (d == null)
162 throw new Error("cannot find TEST.ROOT");
163 d = d.getParentFile();
164 }
165 baseDir = d;
166 }
167 else if (arg.startsWith("-"))
168 throw new Error("unknown option: " + arg);
169 else {
170 while (i < args.length)
171 files.add(new File(baseDir, args[i++]));
172 }
173 }
175 for (File file: files) {
176 if (file.exists())
177 test(file);
178 else
179 error("File not found: " + file);
180 }
182 if (fileCount != 1)
183 System.err.println(fileCount + " files read");
184 if (errors > 0)
185 System.err.println(errors + " errors");
187 return (gui || errors == 0);
188 }
190 /**
191 * Print command line help.
192 * @param out output stream
193 */
194 void usage(PrintStream out) {
195 out.println("Usage:");
196 out.println(" java CheckAttributedTree options... files...");
197 out.println("");
198 out.println("where options include:");
199 out.println("-q Quiet: don't report on inapplicable files");
200 out.println("-gui Display returns in a GUI viewer");
201 out.println("-v Verbose: report on files as they are being read");
202 out.println("-t tag Limit checks to tree nodes with this tag");
203 out.println(" Can be repeated if desired");
204 out.println("-ef file Exclude file or directory");
205 out.println("-et tag Exclude tree nodes with given tag name");
206 out.println("");
207 out.println("files may be directories or files");
208 out.println("directories will be scanned recursively");
209 out.println("non java files, or java files which cannot be parsed, will be ignored");
210 out.println("");
211 }
213 /**
214 * Test a file. If the file is a directory, it will be recursively scanned
215 * for java files.
216 * @param file the file or directory to test
217 */
218 void test(File file) {
219 if (excludeFiles.contains(file)) {
220 if (!quiet)
221 error("File " + file + " excluded");
222 return;
223 }
225 if (file.isDirectory()) {
226 for (File f: file.listFiles()) {
227 test(f);
228 }
229 return;
230 }
232 if (file.isFile() && file.getName().endsWith(".java")) {
233 try {
234 if (verbose)
235 System.err.println(file);
236 fileCount++;
237 NPETester p = new NPETester();
238 p.test(read(file));
239 } catch (AttributionException e) {
240 if (!quiet) {
241 error("Error attributing " + file + "\n" + e.getMessage());
242 }
243 } catch (IOException e) {
244 error("Error reading " + file + ": " + e);
245 }
246 return;
247 }
249 if (!quiet)
250 error("File " + file + " ignored");
251 }
253 // See CR: 6982992 Tests CheckAttributedTree.java, JavacTreeScannerTest.java, and SourceTreeeScannerTest.java timeout
254 StringWriter sw = new StringWriter();
255 PrintWriter pw = new PrintWriter(sw);
256 Reporter r = new Reporter(pw);
257 JavacTool tool = JavacTool.create();
258 StandardJavaFileManager fm = tool.getStandardFileManager(r, null, null);
260 /**
261 * Read a file.
262 * @param file the file to be read
263 * @return the tree for the content of the file
264 * @throws IOException if any IO errors occur
265 * @throws TreePosTest.ParseException if any errors occur while parsing the file
266 */
267 List<Pair<JCCompilationUnit, JCTree>> read(File file) throws IOException, AttributionException {
268 JavacTool tool = JavacTool.create();
269 r.errors = 0;
270 Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(file);
271 String[] opts = { "-XDshouldStopPolicy=ATTR", "-XDverboseCompilePolicy" };
272 JavacTask task = tool.getTask(pw, fm, r, Arrays.asList(opts), null, files);
273 final List<Element> analyzedElems = new ArrayList<>();
274 task.setTaskListener(new TaskListener() {
275 public void started(TaskEvent e) {
276 if (e.getKind() == TaskEvent.Kind.ANALYZE)
277 analyzedElems.add(e.getTypeElement());
278 }
279 public void finished(TaskEvent e) { }
280 });
282 try {
283 Iterable<? extends CompilationUnitTree> trees = task.parse();
284 task.analyze();
285 List<Pair<JCCompilationUnit, JCTree>> res = new ArrayList<>();
286 //System.out.println("Try to add pairs. Elems are " + analyzedElems);
287 for (CompilationUnitTree t : trees) {
288 JCCompilationUnit cu = (JCCompilationUnit)t;
289 for (JCTree def : cu.defs) {
290 if (def.hasTag(CLASSDEF) &&
291 analyzedElems.contains(((JCTree.JCClassDecl)def).sym)) {
292 //System.out.println("Adding pair...");
293 res.add(new Pair<>(cu, def));
294 }
295 }
296 }
297 return res;
298 }
299 catch (Throwable t) {
300 throw new AttributionException("Exception while attributing file: " + file);
301 }
302 }
304 /**
305 * Report an error. When the program is complete, the program will either
306 * exit or throw an Error if any errors have been reported.
307 * @param msg the error message
308 */
309 void error(String msg) {
310 System.err.println(msg);
311 errors++;
312 }
314 /** Number of files that have been analyzed. */
315 int fileCount;
316 /** Number of errors reported. */
317 int errors;
318 /** Flag: don't report irrelevant files. */
319 boolean quiet;
320 /** Flag: show errors in GUI viewer. */
321 boolean gui;
322 /** The GUI viewer for errors. */
323 Viewer viewer;
324 /** Flag: report files as they are processed. */
325 boolean verbose;
326 /** Option: encoding for test files. */
327 String encoding;
328 /** The set of tags for tree nodes to be analyzed; if empty, all tree nodes
329 * are analyzed. */
330 Set<String> tags = new HashSet<String>();
331 /** Set of files and directories to be excluded from analysis. */
332 Set<File> excludeFiles = new HashSet<File>();
333 /** Set of tag names to be excluded from analysis. */
334 Set<String> excludeTags = new HashSet<String>();
335 /** Utility class for trees */
336 TreeUtil treeUtil = new TreeUtil();
338 /**
339 * Main class for testing assertions concerning types/symbol
340 * left uninitialized after attribution
341 */
342 private class NPETester extends TreeScanner {
343 void test(List<Pair<JCCompilationUnit, JCTree>> trees) {
344 for (Pair<JCCompilationUnit, JCTree> p : trees) {
345 sourcefile = p.fst.sourcefile;
346 endPosTable = p.fst.endPositions;
347 encl = new Info(p.snd, endPosTable);
348 p.snd.accept(this);
349 }
350 }
352 @Override
353 public void scan(JCTree tree) {
354 if (tree == null ||
355 excludeTags.contains(treeUtil.nameFromTag(tree.getTag()))) {
356 return;
357 }
359 Info self = new Info(tree, endPosTable);
360 check(!mandatoryType(tree) ||
361 (tree.type != null &&
362 checkFields(tree)),
363 "'null' found in tree ",
364 self);
366 Info prevEncl = encl;
367 encl = self;
368 tree.accept(this);
369 encl = prevEncl;
370 }
372 private boolean mandatoryType(JCTree that) {
373 return that instanceof JCTree.JCExpression ||
374 that.hasTag(VARDEF) ||
375 that.hasTag(METHODDEF) ||
376 that.hasTag(CLASSDEF);
377 }
379 private final List<String> excludedFields = Arrays.asList("varargsElement");
381 void check(boolean ok, String label, Info self) {
382 if (!ok) {
383 if (gui) {
384 if (viewer == null)
385 viewer = new Viewer();
386 viewer.addEntry(sourcefile, label, encl, self);
387 }
388 error(label + self.toString() + " encl: " + encl.toString() + " in file: " + sourcefile + " " + self.tree);
389 }
390 }
392 boolean checkFields(JCTree t) {
393 List<Field> fieldsToCheck = treeUtil.getFieldsOfType(t,
394 excludedFields,
395 Symbol.class,
396 Type.class);
397 for (Field f : fieldsToCheck) {
398 try {
399 if (f.get(t) == null) {
400 return false;
401 }
402 }
403 catch (IllegalAccessException e) {
404 System.err.println("Cannot read field: " + f);
405 //swallow it
406 }
407 }
408 return true;
409 }
411 @Override
412 public void visitImport(JCImport tree) { }
414 @Override
415 public void visitTopLevel(JCCompilationUnit tree) {
416 scan(tree.defs);
417 }
419 JavaFileObject sourcefile;
420 EndPosTable endPosTable;
421 Info encl;
422 }
424 /**
425 * Utility class providing easy access to position and other info for a tree node.
426 */
427 private class Info {
428 Info() {
429 tree = null;
430 tag = ERRONEOUS;
431 start = 0;
432 pos = 0;
433 end = Integer.MAX_VALUE;
434 }
436 Info(JCTree tree, EndPosTable endPosTable) {
437 this.tree = tree;
438 tag = tree.getTag();
439 start = TreeInfo.getStartPos(tree);
440 pos = tree.pos;
441 end = TreeInfo.getEndPos(tree, endPosTable);
442 }
444 @Override
445 public String toString() {
446 return treeUtil.nameFromTag(tree.getTag()) + "[start:" + start + ",pos:" + pos + ",end:" + end + "]";
447 }
449 final JCTree tree;
450 final JCTree.Tag tag;
451 final int start;
452 final int pos;
453 final int end;
454 }
456 /**
457 * Names for tree tags.
458 */
459 private static class TreeUtil {
460 String nameFromTag(JCTree.Tag tag) {
461 String name = tag.name();
462 return (name == null) ? "??" : name;
463 }
465 List<Field> getFieldsOfType(JCTree t, List<String> excludeNames, Class<?>... types) {
466 List<Field> buf = new ArrayList<Field>();
467 for (Field f : t.getClass().getDeclaredFields()) {
468 if (!excludeNames.contains(f.getName())) {
469 for (Class<?> type : types) {
470 if (type.isAssignableFrom(f.getType())) {
471 f.setAccessible(true);
472 buf.add(f);
473 break;
474 }
475 }
476 }
477 }
478 return buf;
479 }
480 }
482 /**
483 * Thrown when errors are found parsing a java file.
484 */
485 private static class ParseException extends Exception {
486 ParseException(String msg) {
487 super(msg);
488 }
489 }
491 private static class AttributionException extends Exception {
492 AttributionException(String msg) {
493 super(msg);
494 }
495 }
497 /**
498 * DiagnosticListener to report diagnostics and count any errors that occur.
499 */
500 private static class Reporter implements DiagnosticListener<JavaFileObject> {
501 Reporter(PrintWriter out) {
502 this.out = out;
503 }
505 public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
506 out.println(diagnostic);
507 switch (diagnostic.getKind()) {
508 case ERROR:
509 errors++;
510 }
511 }
512 int errors;
513 PrintWriter out;
514 }
516 /**
517 * GUI viewer for issues found by TreePosTester. The viewer provides a drop
518 * down list for selecting error conditions, a header area providing details
519 * about an error, and a text area with the ranges of text highlighted as
520 * appropriate.
521 */
522 private class Viewer extends JFrame {
523 /**
524 * Create a viewer.
525 */
526 Viewer() {
527 initGUI();
528 }
530 /**
531 * Add another entry to the list of errors.
532 * @param file The file containing the error
533 * @param check The condition that was being tested, and which failed
534 * @param encl the enclosing tree node
535 * @param self the tree node containing the error
536 */
537 void addEntry(JavaFileObject file, String check, Info encl, Info self) {
538 Entry e = new Entry(file, check, encl, self);
539 DefaultComboBoxModel m = (DefaultComboBoxModel) entries.getModel();
540 m.addElement(e);
541 if (m.getSize() == 1)
542 entries.setSelectedItem(e);
543 }
545 /**
546 * Initialize the GUI window.
547 */
548 private void initGUI() {
549 JPanel head = new JPanel(new GridBagLayout());
550 GridBagConstraints lc = new GridBagConstraints();
551 GridBagConstraints fc = new GridBagConstraints();
552 fc.anchor = GridBagConstraints.WEST;
553 fc.fill = GridBagConstraints.HORIZONTAL;
554 fc.gridwidth = GridBagConstraints.REMAINDER;
556 entries = new JComboBox();
557 entries.addActionListener(new ActionListener() {
558 public void actionPerformed(ActionEvent e) {
559 showEntry((Entry) entries.getSelectedItem());
560 }
561 });
562 fc.insets.bottom = 10;
563 head.add(entries, fc);
564 fc.insets.bottom = 0;
565 head.add(new JLabel("check:"), lc);
566 head.add(checkField = createTextField(80), fc);
567 fc.fill = GridBagConstraints.NONE;
568 head.add(setBackground(new JLabel("encl:"), enclColor), lc);
569 head.add(enclPanel = new InfoPanel(), fc);
570 head.add(setBackground(new JLabel("self:"), selfColor), lc);
571 head.add(selfPanel = new InfoPanel(), fc);
572 add(head, BorderLayout.NORTH);
574 body = new JTextArea();
575 body.setFont(Font.decode(Font.MONOSPACED));
576 body.addCaretListener(new CaretListener() {
577 public void caretUpdate(CaretEvent e) {
578 int dot = e.getDot();
579 int mark = e.getMark();
580 if (dot == mark)
581 statusText.setText("dot: " + dot);
582 else
583 statusText.setText("dot: " + dot + ", mark:" + mark);
584 }
585 });
586 JScrollPane p = new JScrollPane(body,
587 JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
588 JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
589 p.setPreferredSize(new Dimension(640, 480));
590 add(p, BorderLayout.CENTER);
592 statusText = createTextField(80);
593 add(statusText, BorderLayout.SOUTH);
595 pack();
596 setLocationRelativeTo(null); // centered on screen
597 setVisible(true);
598 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
599 }
601 /** Show an entry that has been selected. */
602 private void showEntry(Entry e) {
603 try {
604 // update simple fields
605 setTitle(e.file.getName());
606 checkField.setText(e.check);
607 enclPanel.setInfo(e.encl);
608 selfPanel.setInfo(e.self);
609 // show file text with highlights
610 body.setText(e.file.getCharContent(true).toString());
611 Highlighter highlighter = body.getHighlighter();
612 highlighter.removeAllHighlights();
613 addHighlight(highlighter, e.encl, enclColor);
614 addHighlight(highlighter, e.self, selfColor);
615 scroll(body, getMinPos(enclPanel.info, selfPanel.info));
616 } catch (IOException ex) {
617 body.setText("Cannot read " + e.file.getName() + ": " + e);
618 }
619 }
621 /** Create a test field. */
622 private JTextField createTextField(int width) {
623 JTextField f = new JTextField(width);
624 f.setEditable(false);
625 f.setBorder(null);
626 return f;
627 }
629 /** Add a highlighted region based on the positions in an Info object. */
630 private void addHighlight(Highlighter h, Info info, Color c) {
631 int start = info.start;
632 int end = info.end;
633 if (start == -1 && end == -1)
634 return;
635 if (start == -1)
636 start = end;
637 if (end == -1)
638 end = start;
639 try {
640 h.addHighlight(info.start, info.end,
641 new DefaultHighlighter.DefaultHighlightPainter(c));
642 if (info.pos != -1) {
643 Color c2 = new Color(c.getRed(), c.getGreen(), c.getBlue(), (int)(.4f * 255)); // 40%
644 h.addHighlight(info.pos, info.pos + 1,
645 new DefaultHighlighter.DefaultHighlightPainter(c2));
646 }
647 } catch (BadLocationException e) {
648 e.printStackTrace();
649 }
650 }
652 /** Get the minimum valid position in a set of info objects. */
653 private int getMinPos(Info... values) {
654 int i = Integer.MAX_VALUE;
655 for (Info info: values) {
656 if (info.start >= 0) i = Math.min(i, info.start);
657 if (info.pos >= 0) i = Math.min(i, info.pos);
658 if (info.end >= 0) i = Math.min(i, info.end);
659 }
660 return (i == Integer.MAX_VALUE) ? 0 : i;
661 }
663 /** Set the background on a component. */
664 private JComponent setBackground(JComponent comp, Color c) {
665 comp.setOpaque(true);
666 comp.setBackground(c);
667 return comp;
668 }
670 /** Scroll a text area to display a given position near the middle of the visible area. */
671 private void scroll(final JTextArea t, final int pos) {
672 // Using invokeLater appears to give text a chance to sort itself out
673 // before the scroll happens; otherwise scrollRectToVisible doesn't work.
674 // Maybe there's a better way to sync with the text...
675 EventQueue.invokeLater(new Runnable() {
676 public void run() {
677 try {
678 Rectangle r = t.modelToView(pos);
679 JScrollPane p = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, t);
680 r.y = Math.max(0, r.y - p.getHeight() * 2 / 5);
681 r.height += p.getHeight() * 4 / 5;
682 t.scrollRectToVisible(r);
683 } catch (BadLocationException ignore) {
684 }
685 }
686 });
687 }
689 private JComboBox entries;
690 private JTextField checkField;
691 private InfoPanel enclPanel;
692 private InfoPanel selfPanel;
693 private JTextArea body;
694 private JTextField statusText;
696 private Color selfColor = new Color(0.f, 1.f, 0.f, 0.2f); // 20% green
697 private Color enclColor = new Color(1.f, 0.f, 0.f, 0.2f); // 20% red
699 /** Panel to display an Info object. */
700 private class InfoPanel extends JPanel {
701 InfoPanel() {
702 add(tagName = createTextField(20));
703 add(new JLabel("start:"));
704 add(addListener(start = createTextField(6)));
705 add(new JLabel("pos:"));
706 add(addListener(pos = createTextField(6)));
707 add(new JLabel("end:"));
708 add(addListener(end = createTextField(6)));
709 }
711 void setInfo(Info info) {
712 this.info = info;
713 tagName.setText(treeUtil.nameFromTag(info.tag));
714 start.setText(String.valueOf(info.start));
715 pos.setText(String.valueOf(info.pos));
716 end.setText(String.valueOf(info.end));
717 }
719 JTextField addListener(final JTextField f) {
720 f.addMouseListener(new MouseAdapter() {
721 @Override
722 public void mouseClicked(MouseEvent e) {
723 body.setCaretPosition(Integer.valueOf(f.getText()));
724 body.getCaret().setVisible(true);
725 }
726 });
727 return f;
728 }
730 Info info;
731 JTextField tagName;
732 JTextField start;
733 JTextField pos;
734 JTextField end;
735 }
737 /** Object to record information about an error to be displayed. */
738 private class Entry {
739 Entry(JavaFileObject file, String check, Info encl, Info self) {
740 this.file = file;
741 this.check = check;
742 this.encl = encl;
743 this.self= self;
744 }
746 @Override
747 public String toString() {
748 return file.getName() + " " + check + " " + getMinPos(encl, self);
749 }
751 final JavaFileObject file;
752 final String check;
753 final Info encl;
754 final Info self;
755 }
756 }
757 }