1 /*
2 * Copyright (c) 2010, 2021, 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 */
23
24 /*
25 * @test
26 * @bug 6970584 8006694 8062373 8129962
27 * @summary assorted position errors in compiler syntax trees
28 * temporarily workaround combo tests are causing time out in several platforms
29 * @library ../lib
30 * @modules java.desktop
31 * jdk.compiler/com.sun.tools.javac.api
32 * jdk.compiler/com.sun.tools.javac.code
33 * jdk.compiler/com.sun.tools.javac.file
34 * jdk.compiler/com.sun.tools.javac.tree
35 * jdk.compiler/com.sun.tools.javac.util
36 * @build combo.ComboTestHelper
37 * @run main CheckAttributedTree -q -r -et ERRONEOUS .
38 */
39
40 import java.awt.BorderLayout;
41 import java.awt.Color;
42 import java.awt.Dimension;
43 import java.awt.EventQueue;
44 import java.awt.Font;
45 import java.awt.GridBagConstraints;
46 import java.awt.GridBagLayout;
47 import java.awt.Rectangle;
48 import java.awt.event.ActionEvent;
49 import java.awt.event.ActionListener;
50 import java.awt.event.MouseAdapter;
51 import java.awt.event.MouseEvent;
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.nio.file.FileVisitResult;
59 import java.nio.file.Files;
60 import java.nio.file.Path;
61 import java.nio.file.SimpleFileVisitor;
62 import java.nio.file.attribute.BasicFileAttributes;
63 import java.util.ArrayList;
64 import java.util.Arrays;
65 import java.util.HashSet;
66 import java.util.List;
67 import java.util.Set;
68 import java.util.concurrent.atomic.AtomicInteger;
69 import java.util.function.BiConsumer;
70
71 import javax.lang.model.element.Element;
72 import javax.swing.DefaultComboBoxModel;
73 import javax.swing.JComboBox;
74 import javax.swing.JComponent;
75 import javax.swing.JFrame;
76 import javax.swing.JLabel;
77 import javax.swing.JPanel;
78 import javax.swing.JScrollPane;
79 import javax.swing.JTextArea;
80 import javax.swing.JTextField;
81 import javax.swing.SwingUtilities;
82 import javax.swing.event.CaretEvent;
83 import javax.swing.event.CaretListener;
84 import javax.swing.text.BadLocationException;
85 import javax.swing.text.DefaultHighlighter;
86 import javax.swing.text.Highlighter;
87 import javax.tools.JavaFileObject;
88
89 import com.sun.source.tree.CompilationUnitTree;
90 import com.sun.source.util.TaskEvent;
91 import com.sun.source.util.TaskEvent.Kind;
92 import com.sun.source.util.TaskListener;
93 import com.sun.tools.javac.code.Symbol;
94 import com.sun.tools.javac.code.Type;
95 import com.sun.tools.javac.tree.EndPosTable;
96 import com.sun.tools.javac.tree.JCTree;
97 import com.sun.tools.javac.tree.JCTree.JCBreak;
98 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
99 import com.sun.tools.javac.tree.JCTree.JCImport;
100 import com.sun.tools.javac.tree.TreeInfo;
101 import com.sun.tools.javac.tree.TreeScanner;
102 import com.sun.tools.javac.util.Pair;
103
104 import static com.sun.tools.javac.tree.JCTree.Tag.*;
105
106 import combo.ComboTestHelper;
107 import combo.ComboInstance;
108 import combo.ComboTestHelper.IgnoreMode;
109
110 /**
111 * Utility and test program to check validity of tree positions for tree nodes.
112 * The program can be run standalone, or as a jtreg test. In standalone mode,
113 * errors can be displayed in a gui viewer. For info on command line args,
114 * run program with no args.
115 *
116 * <p>
117 * jtreg: Note that by using the -r switch in the test description below, this test
118 * will process all java files in the langtools/test directory, thus implicitly
119 * covering any new language features that may be tested in this test suite.
120 */
121
122 public class CheckAttributedTree {
123 /**
124 * Main entry point.
125 * If test.src is set, program runs in jtreg mode, and will throw an Error
126 * if any errors arise, otherwise System.exit will be used, unless the gui
127 * viewer is being used. In jtreg mode, the default base directory for file
128 * args is the value of ${test.src}. In jtreg mode, the -r option can be
129 * given to change the default base directory to the root test directory.
130 */
131 public static void main(String... args) throws Exception {
132 String testSrc = System.getProperty("test.src");
133 File baseDir = (testSrc == null) ? null : new File(testSrc);
134 boolean ok = new CheckAttributedTree().run(baseDir, args);
135 if (!ok) {
136 if (testSrc != null) // jtreg mode
137 throw new Error("failed");
138 else
139 System.exit(1);
140 }
141 System.err.println("total number of compilations " + totalNumberOfCompilations);
142 System.err.println("number of failed compilations " + numberOfFailedCompilations);
143 }
144
145 static private int totalNumberOfCompilations = 0;
146 static private int numberOfFailedCompilations = 0;
147
148 /**
149 * Run the program. A base directory can be provided for file arguments.
150 * In jtreg mode, the -r option can be given to change the default base
151 * directory to the test root directory. For other options, see usage().
152 * @param baseDir base directory for any file arguments.
153 * @param args command line args
154 * @return true if successful or in gui mode
155 */
156 boolean run(File baseDir, String... args) throws Exception {
157 if (args.length == 0) {
158 usage(System.out);
159 return true;
160 }
161
162 List<File> files = new ArrayList<File>();
163 for (int i = 0; i < args.length; i++) {
164 String arg = args[i];
165 if (arg.equals("-encoding") && i + 1 < args.length)
166 encoding = args[++i];
167 else if (arg.equals("-gui"))
168 gui = true;
169 else if (arg.equals("-q"))
170 quiet = true;
171 else if (arg.equals("-v")) {
172 verbose = true;
173 }
174 else if (arg.equals("-t") && i + 1 < args.length)
175 tags.add(args[++i]);
176 else if (arg.equals("-ef") && i + 1 < args.length)
177 excludeFiles.add(new File(baseDir, args[++i]));
178 else if (arg.equals("-et") && i + 1 < args.length)
179 excludeTags.add(args[++i]);
180 else if (arg.equals("-r")) {
181 if (excludeFiles.size() > 0)
182 throw new Error("-r must be used before -ef");
183 File d = baseDir;
184 while (!new File(d, "TEST.ROOT").exists()) {
185 if (d == null)
186 throw new Error("cannot find TEST.ROOT");
187 d = d.getParentFile();
188 }
189 baseDir = d;
190 }
191 else if (arg.startsWith("-"))
192 throw new Error("unknown option: " + arg);
193 else {
194 while (i < args.length)
195 files.add(new File(baseDir, args[i++]));
196 }
197 }
198
199 ComboTestHelper<FileChecker> cth = new ComboTestHelper<>();
200 cth.withIgnoreMode(IgnoreMode.IGNORE_ALL)
201 .withFilter(FileChecker::checkFile)
202 .withDimension("FILE", (x, file) -> x.file = file, getAllFiles(files))
203 .run(FileChecker::new);
204
205 if (fileCount.get() != 1)
206 errWriter.println(fileCount + " files read");
207
208 if (verbose) {
209 System.out.println(errSWriter.toString());
210 }
211
212 return (gui || !cth.info().hasFailures());
213 }
214
215 File[] getAllFiles(List<File> roots) throws IOException {
216 long now = System.currentTimeMillis();
217 ArrayList<File> buf = new ArrayList<>();
218 for (File file : roots) {
219 Files.walkFileTree(file.toPath(), new SimpleFileVisitor<Path>() {
220 @Override
221 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
222 buf.add(file.toFile());
223 return FileVisitResult.CONTINUE;
224 }
225 });
226 }
227 long delta = System.currentTimeMillis() - now;
228 System.err.println("All files = " + buf.size() + " " + delta);
229 return buf.toArray(new File[buf.size()]);
230 }
231
232 /**
233 * Print command line help.
234 * @param out output stream
235 */
236 void usage(PrintStream out) {
237 out.println("Usage:");
238 out.println(" java CheckAttributedTree options... files...");
239 out.println("");
240 out.println("where options include:");
241 out.println("-q Quiet: don't report on inapplicable files");
242 out.println("-gui Display returns in a GUI viewer");
243 out.println("-v Verbose: report on files as they are being read");
244 out.println("-t tag Limit checks to tree nodes with this tag");
245 out.println(" Can be repeated if desired");
246 out.println("-ef file Exclude file or directory");
247 out.println("-et tag Exclude tree nodes with given tag name");
248 out.println("");
249 out.println("files may be directories or files");
250 out.println("directories will be scanned recursively");
251 out.println("non java files, or java files which cannot be parsed, will be ignored");
252 out.println("");
253 }
254
255 class FileChecker extends ComboInstance<FileChecker> {
256
257 File file;
258
259 boolean checkFile() {
260 if (!file.exists()) {
261 error("File not found: " + file);
262 return false;
263 }
264 if (excludeFiles.contains(file)) {
265 if (!quiet)
266 error("File " + file + " excluded");
267 return false;
268 }
269 if (!file.getName().endsWith(".java")) {
270 if (!quiet)
271 error("File " + file + " ignored");
272 return false;
273 }
274
275 return true;
276 }
277
278 public void doWork() {
279 if (!file.exists()) {
280 error("File not found: " + file);
281 }
282 if (excludeFiles.contains(file)) {
283 if (!quiet)
284 error("File " + file + " excluded");
285 return;
286 }
287 if (!file.getName().endsWith(".java")) {
288 if (!quiet)
289 error("File " + file + " ignored");
290 }
291 try {
292 if (verbose)
293 errWriter.println(file);
294 fileCount.incrementAndGet();
295 NPETester p = new NPETester();
296 readAndCheck(file, p::test);
297 } catch (Throwable t) {
298 if (!quiet) {
299 error("Error checking " + file + "\n" + t.getMessage());
300 }
301 }
302 }
303
304 /**
305 * Read and check a file.
306 * @param file the file to be read
307 * @return the tree for the content of the file
308 * @throws IOException if any IO errors occur
309 * @throws AttributionException if any errors occur while analyzing the file
310 */
311 void readAndCheck(File file, BiConsumer<JCCompilationUnit, JCTree> c) throws IOException {
312 Iterable<? extends JavaFileObject> files = fileManager().getJavaFileObjects(file);
313 final List<Element> analyzedElems = new ArrayList<>();
314 final List<CompilationUnitTree> trees = new ArrayList<>();
315 totalNumberOfCompilations++;
316 newCompilationTask()
317 .withWriter(pw)
318 .withOption("--should-stop=ifError=ATTR")
319 .withOption("--should-stop=ifNoError=ATTR")
320 .withOption("-XDverboseCompilePolicy")
321 .withOption("-Xdoclint:none")
322 .withSource(files.iterator().next())
323 .withListener(new TaskListener() {
324 public void started(TaskEvent e) {
325 if (e.getKind() == TaskEvent.Kind.ANALYZE)
326 analyzedElems.add(e.getTypeElement());
327 }
328
329 public void finished(TaskEvent e) {
330 if (e.getKind() == Kind.PARSE)
331 trees.add(e.getCompilationUnit());
332 }
333 }).analyze(res -> {
334 Iterable<? extends Element> elems = res.get();
335 if (elems.iterator().hasNext()) {
336 for (CompilationUnitTree t : trees) {
337 JCCompilationUnit cu = (JCCompilationUnit)t;
338 for (JCTree def : cu.defs) {
339 if (def.hasTag(CLASSDEF) &&
340 analyzedElems.contains(((JCTree.JCClassDecl)def).sym)) {
341 c.accept(cu, def);
342 }
343 }
344 }
345 } else {
346 numberOfFailedCompilations++;
347 }
348 });
349 }
350
351 /**
352 * Report an error. When the program is complete, the program will either
353 * exit or throw an Error if any errors have been reported.
354 * @param msg the error message
355 */
356 void error(String msg) {
357 System.err.println();
358 System.err.println(msg);
359 System.err.println();
360 fail(msg);
361 }
362
363 /**
364 * Main class for testing assertions concerning types/symbol
365 * left uninitialized after attribution
366 */
367 private class NPETester extends TreeScanner {
368 void test(JCCompilationUnit cut, JCTree tree) {
369 sourcefile = cut.sourcefile;
370 endPosTable = cut.endPositions;
371 encl = new Info(tree, endPosTable);
372 tree.accept(this);
373 }
374
375 @Override
376 public void scan(JCTree tree) {
377 if (tree == null ||
378 excludeTags.contains(treeUtil.nameFromTag(tree.getTag()))) {
379 return;
380 }
381
382 Info self = new Info(tree, endPosTable);
383 if (mandatoryType(tree)) {
384 check(tree.type != null,
385 "'null' field 'type' found in tree ", self);
386 if (tree.type==null)
387 Thread.dumpStack();
388 }
389
390 Field errField = checkFields(tree);
391 if (errField!=null) {
392 check(false,
393 "'null' field '" + errField.getName() + "' found in tree ", self);
394 }
395
396 Info prevEncl = encl;
397 encl = self;
398 tree.accept(this);
399 encl = prevEncl;
400 }
401
402 private boolean mandatoryType(JCTree that) {
403 return that instanceof JCTree.JCExpression ||
404 that.hasTag(VARDEF) ||
405 that.hasTag(METHODDEF) ||
406 that.hasTag(CLASSDEF);
407 }
408
409 private final List<String> excludedFields = Arrays.asList("varargsElement", "targetType");
410
411 void check(boolean ok, String label, Info self) {
412 if (!ok) {
413 if (gui) {
414 if (viewer == null)
415 viewer = new Viewer();
416 viewer.addEntry(sourcefile, label, encl, self);
417 }
418 error(label + self.toString() + " encl: " + encl.toString() +
419 " in file: " + sourcefile + " " + self.tree);
420 }
421 }
422
423 Field checkFields(JCTree t) {
424 List<Field> fieldsToCheck = treeUtil.getFieldsOfType(t,
425 excludedFields,
426 Symbol.class,
427 Type.class);
428 for (Field f : fieldsToCheck) {
429 try {
430 if (f.get(t) == null) {
431 return f;
432 }
433 }
434 catch (IllegalAccessException e) {
435 System.err.println("Cannot read field: " + f);
436 //swallow it
437 }
438 }
439 return null;
440 }
441
442 @Override
443 public void visitImport(JCImport tree) { }
444
445 @Override
446 public void visitTopLevel(JCCompilationUnit tree) {
447 scan(tree.defs);
448 }
449
450 @Override
451 public void visitBreak(JCBreak tree) {
452 if (tree.isValueBreak())
453 super.visitBreak(tree);
454 }
455
456 JavaFileObject sourcefile;
457 EndPosTable endPosTable;
458 Info encl;
459 }
460 }
461
462 // See CR: 6982992 Tests CheckAttributedTree.java, JavacTreeScannerTest.java, and SourceTreeeScannerTest.java timeout
463 StringWriter sw = new StringWriter();
464 PrintWriter pw = new PrintWriter(sw);
465
466 StringWriter errSWriter = new StringWriter();
467 PrintWriter errWriter = new PrintWriter(errSWriter);
468
469 /** Flag: don't report irrelevant files. */
470 boolean quiet;
471 /** Flag: show errors in GUI viewer. */
472 boolean gui;
473 /** The GUI viewer for errors. */
474 Viewer viewer;
475 /** Flag: report files as they are processed. */
476 boolean verbose;
477 /** Option: encoding for test files. */
478 String encoding;
479 /** The set of tags for tree nodes to be analyzed; if empty, all tree nodes
480 * are analyzed. */
481 Set<String> tags = new HashSet<String>();
482 /** Set of files and directories to be excluded from analysis. */
483 Set<File> excludeFiles = new HashSet<File>();
484 /** Set of tag names to be excluded from analysis. */
485 Set<String> excludeTags = new HashSet<String>();
486 /** Utility class for trees */
487 TreeUtil treeUtil = new TreeUtil();
488
489 /**
490 * Utility class providing easy access to position and other info for a tree node.
491 */
492 private class Info {
493 Info() {
494 tree = null;
495 tag = ERRONEOUS;
496 start = 0;
497 pos = 0;
498 end = Integer.MAX_VALUE;
499 }
500
501 Info(JCTree tree, EndPosTable endPosTable) {
502 this.tree = tree;
503 tag = tree.getTag();
504 start = TreeInfo.getStartPos(tree);
505 pos = tree.pos;
506 end = TreeInfo.getEndPos(tree, endPosTable);
507 }
508
509 @Override
510 public String toString() {
511 return treeUtil.nameFromTag(tree.getTag()) + "[start:" + start + ",pos:" + pos + ",end:" + end + "]";
512 }
513
514 final JCTree tree;
515 final JCTree.Tag tag;
516 final int start;
517 final int pos;
518 final int end;
519 }
520
521 /**
522 * Names for tree tags.
523 */
524 private static class TreeUtil {
525 String nameFromTag(JCTree.Tag tag) {
526 String name = tag.name();
527 return (name == null) ? "??" : name;
528 }
529
530 List<Field> getFieldsOfType(JCTree t, List<String> excludeNames, Class<?>... types) {
531 List<Field> buf = new ArrayList<Field>();
532 for (Field f : t.getClass().getDeclaredFields()) {
533 if (!excludeNames.contains(f.getName())) {
534 for (Class<?> type : types) {
535 if (type.isAssignableFrom(f.getType())) {
536 f.setAccessible(true);
537 buf.add(f);
538 break;
539 }
540 }
541 }
542 }
543 return buf;
544 }
545 }
546
547 /**
548 * GUI viewer for issues found by TreePosTester. The viewer provides a drop
549 * down list for selecting error conditions, a header area providing details
550 * about an error, and a text area with the ranges of text highlighted as
551 * appropriate.
552 */
553 private class Viewer extends JFrame {
554 /**
555 * Create a viewer.
556 */
557 Viewer() {
558 initGUI();
559 }
560
561 /**
562 * Add another entry to the list of errors.
563 * @param file The file containing the error
564 * @param check The condition that was being tested, and which failed
565 * @param encl the enclosing tree node
566 * @param self the tree node containing the error
567 */
568 void addEntry(JavaFileObject file, String check, Info encl, Info self) {
569 Entry e = new Entry(file, check, encl, self);
570 DefaultComboBoxModel m = (DefaultComboBoxModel) entries.getModel();
571 m.addElement(e);
572 if (m.getSize() == 1)
573 entries.setSelectedItem(e);
574 }
575
576 /**
577 * Initialize the GUI window.
578 */
579 private void initGUI() {
580 JPanel head = new JPanel(new GridBagLayout());
581 GridBagConstraints lc = new GridBagConstraints();
582 GridBagConstraints fc = new GridBagConstraints();
583 fc.anchor = GridBagConstraints.WEST;
584 fc.fill = GridBagConstraints.HORIZONTAL;
585 fc.gridwidth = GridBagConstraints.REMAINDER;
586
587 entries = new JComboBox();
588 entries.addActionListener(new ActionListener() {
589 public void actionPerformed(ActionEvent e) {
590 showEntry((Entry) entries.getSelectedItem());
591 }
592 });
593 fc.insets.bottom = 10;
594 head.add(entries, fc);
595 fc.insets.bottom = 0;
596 head.add(new JLabel("check:"), lc);
597 head.add(checkField = createTextField(80), fc);
598 fc.fill = GridBagConstraints.NONE;
599 head.add(setBackground(new JLabel("encl:"), enclColor), lc);
600 head.add(enclPanel = new InfoPanel(), fc);
601 head.add(setBackground(new JLabel("self:"), selfColor), lc);
602 head.add(selfPanel = new InfoPanel(), fc);
603 add(head, BorderLayout.NORTH);
604
605 body = new JTextArea();
606 body.setFont(Font.decode(Font.MONOSPACED));
607 body.addCaretListener(new CaretListener() {
608 public void caretUpdate(CaretEvent e) {
609 int dot = e.getDot();
610 int mark = e.getMark();
611 if (dot == mark)
612 statusText.setText("dot: " + dot);
613 else
614 statusText.setText("dot: " + dot + ", mark:" + mark);
615 }
616 });
617 JScrollPane p = new JScrollPane(body,
618 JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
619 JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
620 p.setPreferredSize(new Dimension(640, 480));
621 add(p, BorderLayout.CENTER);
622
623 statusText = createTextField(80);
624 add(statusText, BorderLayout.SOUTH);
625
626 pack();
627 setLocationRelativeTo(null); // centered on screen
628 setVisible(true);
629 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
630 }
631
632 /** Show an entry that has been selected. */
633 private void showEntry(Entry e) {
634 try {
635 // update simple fields
636 setTitle(e.file.getName());
637 checkField.setText(e.check);
638 enclPanel.setInfo(e.encl);
639 selfPanel.setInfo(e.self);
640 // show file text with highlights
641 body.setText(e.file.getCharContent(true).toString());
642 Highlighter highlighter = body.getHighlighter();
643 highlighter.removeAllHighlights();
644 addHighlight(highlighter, e.encl, enclColor);
645 addHighlight(highlighter, e.self, selfColor);
646 scroll(body, getMinPos(enclPanel.info, selfPanel.info));
647 } catch (IOException ex) {
648 body.setText("Cannot read " + e.file.getName() + ": " + e);
649 }
650 }
651
652 /** Create a test field. */
653 private JTextField createTextField(int width) {
654 JTextField f = new JTextField(width);
655 f.setEditable(false);
656 f.setBorder(null);
657 return f;
658 }
659
660 /** Add a highlighted region based on the positions in an Info object. */
661 private void addHighlight(Highlighter h, Info info, Color c) {
662 int start = info.start;
663 int end = info.end;
664 if (start == -1 && end == -1)
665 return;
666 if (start == -1)
667 start = end;
668 if (end == -1)
669 end = start;
670 try {
671 h.addHighlight(info.start, info.end,
672 new DefaultHighlighter.DefaultHighlightPainter(c));
673 if (info.pos != -1) {
674 Color c2 = new Color(c.getRed(), c.getGreen(), c.getBlue(), (int)(.4f * 255)); // 40%
675 h.addHighlight(info.pos, info.pos + 1,
676 new DefaultHighlighter.DefaultHighlightPainter(c2));
677 }
678 } catch (BadLocationException e) {
679 e.printStackTrace();
680 }
681 }
682
683 /** Get the minimum valid position in a set of info objects. */
684 private int getMinPos(Info... values) {
685 int i = Integer.MAX_VALUE;
686 for (Info info: values) {
687 if (info.start >= 0) i = Math.min(i, info.start);
688 if (info.pos >= 0) i = Math.min(i, info.pos);
689 if (info.end >= 0) i = Math.min(i, info.end);
690 }
691 return (i == Integer.MAX_VALUE) ? 0 : i;
692 }
693
694 /** Set the background on a component. */
695 private JComponent setBackground(JComponent comp, Color c) {
696 comp.setOpaque(true);
697 comp.setBackground(c);
698 return comp;
699 }
700
701 /** Scroll a text area to display a given position near the middle of the visible area. */
702 private void scroll(final JTextArea t, final int pos) {
703 // Using invokeLater appears to give text a chance to sort itself out
704 // before the scroll happens; otherwise scrollRectToVisible doesn't work.
705 // Maybe there's a better way to sync with the text...
706 EventQueue.invokeLater(new Runnable() {
707 public void run() {
708 try {
709 Rectangle r = t.modelToView(pos);
710 JScrollPane p = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, t);
711 r.y = Math.max(0, r.y - p.getHeight() * 2 / 5);
712 r.height += p.getHeight() * 4 / 5;
713 t.scrollRectToVisible(r);
714 } catch (BadLocationException ignore) {
715 }
716 }
717 });
718 }
719
720 private JComboBox entries;
721 private JTextField checkField;
722 private InfoPanel enclPanel;
723 private InfoPanel selfPanel;
724 private JTextArea body;
725 private JTextField statusText;
726
727 private Color selfColor = new Color(0.f, 1.f, 0.f, 0.2f); // 20% green
728 private Color enclColor = new Color(1.f, 0.f, 0.f, 0.2f); // 20% red
729
730 /** Panel to display an Info object. */
731 private class InfoPanel extends JPanel {
732 InfoPanel() {
733 add(tagName = createTextField(20));
734 add(new JLabel("start:"));
735 add(addListener(start = createTextField(6)));
736 add(new JLabel("pos:"));
737 add(addListener(pos = createTextField(6)));
738 add(new JLabel("end:"));
739 add(addListener(end = createTextField(6)));
740 }
741
742 void setInfo(Info info) {
743 this.info = info;
744 tagName.setText(treeUtil.nameFromTag(info.tag));
745 start.setText(String.valueOf(info.start));
746 pos.setText(String.valueOf(info.pos));
747 end.setText(String.valueOf(info.end));
748 }
749
750 JTextField addListener(final JTextField f) {
751 f.addMouseListener(new MouseAdapter() {
752 @Override
753 public void mouseClicked(MouseEvent e) {
754 body.setCaretPosition(Integer.valueOf(f.getText()));
755 body.getCaret().setVisible(true);
756 }
757 });
758 return f;
759 }
760
761 Info info;
762 JTextField tagName;
763 JTextField start;
764 JTextField pos;
765 JTextField end;
766 }
767
768 /** Object to record information about an error to be displayed. */
769 private class Entry {
770 Entry(JavaFileObject file, String check, Info encl, Info self) {
771 this.file = file;
772 this.check = check;
773 this.encl = encl;
774 this.self= self;
775 }
776
777 @Override
778 public String toString() {
779 return file.getName() + " " + check + " " + getMinPos(encl, self);
780 }
781
782 final JavaFileObject file;
783 final String check;
784 final Info encl;
785 final Info self;
786 }
787 }
788
789 /** Number of files that have been analyzed. */
790 static AtomicInteger fileCount = new AtomicInteger();
791
792 }