1 /*
2 * Copyright (c) 2010, 2025, 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/timeout=480 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.JCTree;
96 import com.sun.tools.javac.tree.JCTree.JCBreak;
97 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
98 import com.sun.tools.javac.tree.JCTree.JCImport;
99 import com.sun.tools.javac.tree.TreeInfo;
100 import com.sun.tools.javac.tree.TreeScanner;
101 import com.sun.tools.javac.util.Pair;
102
103 import static com.sun.tools.javac.tree.JCTree.Tag.*;
104
105 import combo.ComboTestHelper;
106 import combo.ComboInstance;
107 import combo.ComboTestHelper.IgnoreMode;
108
109 /**
110 * Utility and test program to check validity of tree positions for tree nodes.
111 * The program can be run standalone, or as a jtreg test. In standalone mode,
112 * errors can be displayed in a gui viewer. For info on command line args,
113 * run program with no args.
114 *
115 * <p>
116 * jtreg: Note that by using the -r switch in the test description below, this test
117 * will process all java files in the langtools/test directory, thus implicitly
118 * covering any new language features that may be tested in this test suite.
119 */
120
121 public class CheckAttributedTree {
122 /**
123 * Main entry point.
124 * If test.src is set, program runs in jtreg mode, and will throw an Error
125 * if any errors arise, otherwise System.exit will be used, unless the gui
126 * viewer is being used. In jtreg mode, the default base directory for file
127 * args is the value of ${test.src}. In jtreg mode, the -r option can be
128 * given to change the default base directory to the root test directory.
129 */
130 public static void main(String... args) throws Exception {
131 String testSrc = System.getProperty("test.src");
132 File baseDir = (testSrc == null) ? null : new File(testSrc);
133 boolean ok = new CheckAttributedTree().run(baseDir, args);
134 if (!ok) {
135 if (testSrc != null) // jtreg mode
136 throw new Error("failed");
137 else
138 System.exit(1);
139 }
140 System.err.println("total number of compilations " + totalNumberOfCompilations);
141 System.err.println("number of failed compilations " + numberOfFailedCompilations);
142 }
143
144 static private int totalNumberOfCompilations = 0;
145 static private int numberOfFailedCompilations = 0;
146
147 /**
148 * Run the program. A base directory can be provided for file arguments.
149 * In jtreg mode, the -r option can be given to change the default base
150 * directory to the test root directory. For other options, see usage().
151 * @param baseDir base directory for any file arguments.
152 * @param args command line args
153 * @return true if successful or in gui mode
154 */
155 boolean run(File baseDir, String... args) throws Exception {
156 if (args.length == 0) {
157 usage(System.out);
158 return true;
159 }
160
161 List<File> files = new ArrayList<File>();
162 for (int i = 0; i < args.length; i++) {
163 String arg = args[i];
164 if (arg.equals("-encoding") && i + 1 < args.length)
165 encoding = args[++i];
166 else if (arg.equals("-gui"))
167 gui = true;
168 else if (arg.equals("-q"))
169 quiet = true;
170 else if (arg.equals("-v")) {
171 verbose = true;
172 }
173 else if (arg.equals("-t") && i + 1 < args.length)
174 tags.add(args[++i]);
175 else if (arg.equals("-ef") && i + 1 < args.length)
176 excludeFiles.add(new File(baseDir, args[++i]));
177 else if (arg.equals("-et") && i + 1 < args.length)
178 excludeTags.add(args[++i]);
179 else if (arg.equals("-r")) {
180 if (excludeFiles.size() > 0)
181 throw new Error("-r must be used before -ef");
182 File d = baseDir;
183 while (!new File(d, "TEST.ROOT").exists()) {
184 if (d == null)
185 throw new Error("cannot find TEST.ROOT");
186 d = d.getParentFile();
187 }
188 baseDir = d;
189 }
190 else if (arg.startsWith("-"))
191 throw new Error("unknown option: " + arg);
192 else {
193 while (i < args.length)
194 files.add(new File(baseDir, args[i++]));
195 }
196 }
197
198 ComboTestHelper<FileChecker> cth = new ComboTestHelper<>();
199 cth.withIgnoreMode(IgnoreMode.IGNORE_ALL)
200 .withFilter(FileChecker::checkFile)
201 .withDimension("FILE", (x, file) -> x.file = file, getAllFiles(files))
202 .run(FileChecker::new);
203
204 if (fileCount.get() != 1)
205 errWriter.println(fileCount + " files read");
206
207 if (verbose) {
208 System.out.println(errSWriter.toString());
209 }
210
211 return (gui || !cth.info().hasFailures());
212 }
213
214 File[] getAllFiles(List<File> roots) throws IOException {
215 long now = System.currentTimeMillis();
216 ArrayList<File> buf = new ArrayList<>();
217 for (File file : roots) {
218 Files.walkFileTree(file.toPath(), new SimpleFileVisitor<Path>() {
219 @Override
220 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
221 buf.add(file.toFile());
222 return FileVisitResult.CONTINUE;
223 }
224 });
225 }
226 long delta = System.currentTimeMillis() - now;
227 System.err.println("All files = " + buf.size() + " " + delta);
228 return buf.toArray(new File[buf.size()]);
229 }
230
231 /**
232 * Print command line help.
233 * @param out output stream
234 */
235 void usage(PrintStream out) {
236 out.println("Usage:");
237 out.println(" java CheckAttributedTree options... files...");
238 out.println("");
239 out.println("where options include:");
240 out.println("-q Quiet: don't report on inapplicable files");
241 out.println("-gui Display returns in a GUI viewer");
242 out.println("-v Verbose: report on files as they are being read");
243 out.println("-t tag Limit checks to tree nodes with this tag");
244 out.println(" Can be repeated if desired");
245 out.println("-ef file Exclude file or directory");
246 out.println("-et tag Exclude tree nodes with given tag name");
247 out.println("");
248 out.println("files may be directories or files");
249 out.println("directories will be scanned recursively");
250 out.println("non java files, or java files which cannot be parsed, will be ignored");
251 out.println("");
252 }
253
254 class FileChecker extends ComboInstance<FileChecker> {
255
256 File file;
257
258 boolean checkFile() {
259 if (!file.exists()) {
260 error("File not found: " + file);
261 return false;
262 }
263 if (excludeFiles.contains(file)) {
264 if (!quiet)
265 error("File " + file + " excluded");
266 return false;
267 }
268 if (!file.getName().endsWith(".java")) {
269 if (!quiet)
270 error("File " + file + " ignored");
271 return false;
272 }
273
274 return true;
275 }
276
277 public void doWork() {
278 if (!file.exists()) {
279 error("File not found: " + file);
280 }
281 if (excludeFiles.contains(file)) {
282 if (!quiet)
283 error("File " + file + " excluded");
284 return;
285 }
286 if (!file.getName().endsWith(".java")) {
287 if (!quiet)
288 error("File " + file + " ignored");
289 }
290 try {
291 if (verbose)
292 errWriter.println(file);
293 fileCount.incrementAndGet();
294 NPETester p = new NPETester();
295 readAndCheck(file, p::test);
296 } catch (Throwable t) {
297 if (!quiet) {
298 error("Error checking " + file + "\n" + t.getMessage());
299 }
300 }
301 }
302
303 /**
304 * Read and check a file.
305 * @param file the file to be read
306 * @return the tree for the content of the file
307 * @throws IOException if any IO errors occur
308 * @throws AttributionException if any errors occur while analyzing the file
309 */
310 void readAndCheck(File file, BiConsumer<JCCompilationUnit, JCTree> c) throws IOException {
311 Iterable<? extends JavaFileObject> files = fileManager().getJavaFileObjects(file);
312 final List<Element> analyzedElems = new ArrayList<>();
313 final List<CompilationUnitTree> trees = new ArrayList<>();
314 totalNumberOfCompilations++;
315 newCompilationTask()
316 .withWriter(pw)
317 .withOption("--should-stop=ifError=ATTR")
318 .withOption("--should-stop=ifNoError=ATTR")
319 .withOption("-XDverboseCompilePolicy")
320 .withOption("-Xdoclint:none")
321 .withSource(files.iterator().next())
322 .withListener(new TaskListener() {
323 public void started(TaskEvent e) {
324 if (e.getKind() == TaskEvent.Kind.ANALYZE)
325 analyzedElems.add(e.getTypeElement());
326 }
327
328 public void finished(TaskEvent e) {
329 if (e.getKind() == Kind.PARSE)
330 trees.add(e.getCompilationUnit());
331 }
332 }).analyze(res -> {
333 Iterable<? extends Element> elems = res.get();
334 if (elems.iterator().hasNext()) {
335 for (CompilationUnitTree t : trees) {
336 JCCompilationUnit cu = (JCCompilationUnit)t;
337 for (JCTree def : cu.defs) {
338 if (def.hasTag(CLASSDEF) &&
339 analyzedElems.contains(((JCTree.JCClassDecl)def).sym)) {
340 c.accept(cu, def);
341 }
342 }
343 }
344 } else {
345 numberOfFailedCompilations++;
346 }
347 });
348 }
349
350 /**
351 * Report an error. When the program is complete, the program will either
352 * exit or throw an Error if any errors have been reported.
353 * @param msg the error message
354 */
355 void error(String msg) {
356 System.err.println();
357 System.err.println(msg);
358 System.err.println();
359 fail(msg);
360 }
361
362 /**
363 * Main class for testing assertions concerning types/symbol
364 * left uninitialized after attribution
365 */
366 private class NPETester extends TreeScanner {
367 void test(JCCompilationUnit cut, JCTree tree) {
368 sourcefile = cut.sourcefile;
369 encl = new Info(tree);
370 tree.accept(this);
371 }
372
373 @Override
374 public void scan(JCTree tree) {
375 if (tree == null ||
376 excludeTags.contains(treeUtil.nameFromTag(tree.getTag()))) {
377 return;
378 }
379
380 Info self = new Info(tree);
381 if (mandatoryType(tree)) {
382 check(tree.type != null,
383 "'null' field 'type' found in tree ", self);
384 if (tree.type==null)
385 Thread.dumpStack();
386 }
387
388 Field errField = checkFields(tree);
389 if (errField!=null) {
390 check(false,
391 "'null' field '" + errField.getName() + "' found in tree ", self);
392 }
393
394 Info prevEncl = encl;
395 encl = self;
396 tree.accept(this);
397 encl = prevEncl;
398 }
399
400 private boolean mandatoryType(JCTree that) {
401 return that instanceof JCTree.JCExpression ||
402 that.hasTag(VARDEF) ||
403 that.hasTag(METHODDEF) ||
404 that.hasTag(CLASSDEF);
405 }
406
407 private final List<String> excludedFields = Arrays.asList("varargsElement", "targetType");
408
409 void check(boolean ok, String label, Info self) {
410 if (!ok) {
411 if (gui) {
412 if (viewer == null)
413 viewer = new Viewer();
414 viewer.addEntry(sourcefile, label, encl, self);
415 }
416 error(label + self.toString() + " encl: " + encl.toString() +
417 " in file: " + sourcefile + " " + self.tree);
418 }
419 }
420
421 Field checkFields(JCTree t) {
422 List<Field> fieldsToCheck = treeUtil.getFieldsOfType(t,
423 excludedFields,
424 Symbol.class,
425 Type.class);
426 for (Field f : fieldsToCheck) {
427 try {
428 if (f.get(t) == null) {
429 return f;
430 }
431 }
432 catch (IllegalAccessException e) {
433 System.err.println("Cannot read field: " + f);
434 //swallow it
435 }
436 }
437 return null;
438 }
439
440 @Override
441 public void visitImport(JCImport tree) { }
442
443 @Override
444 public void visitTopLevel(JCCompilationUnit tree) {
445 scan(tree.defs);
446 }
447
448 @Override
449 public void visitBreak(JCBreak tree) {
450 if (tree.isValueBreak())
451 super.visitBreak(tree);
452 }
453
454 JavaFileObject sourcefile;
455 Info encl;
456 }
457 }
458
459 // See CR: 6982992 Tests CheckAttributedTree.java, JavacTreeScannerTest.java, and SourceTreeeScannerTest.java timeout
460 StringWriter sw = new StringWriter();
461 PrintWriter pw = new PrintWriter(sw);
462
463 StringWriter errSWriter = new StringWriter();
464 PrintWriter errWriter = new PrintWriter(errSWriter);
465
466 /** Flag: don't report irrelevant files. */
467 boolean quiet;
468 /** Flag: show errors in GUI viewer. */
469 boolean gui;
470 /** The GUI viewer for errors. */
471 Viewer viewer;
472 /** Flag: report files as they are processed. */
473 boolean verbose;
474 /** Option: encoding for test files. */
475 String encoding;
476 /** The set of tags for tree nodes to be analyzed; if empty, all tree nodes
477 * are analyzed. */
478 Set<String> tags = new HashSet<String>();
479 /** Set of files and directories to be excluded from analysis. */
480 Set<File> excludeFiles = new HashSet<File>();
481 /** Set of tag names to be excluded from analysis. */
482 Set<String> excludeTags = new HashSet<String>();
483 /** Utility class for trees */
484 TreeUtil treeUtil = new TreeUtil();
485
486 /**
487 * Utility class providing easy access to position and other info for a tree node.
488 */
489 private class Info {
490 Info() {
491 tree = null;
492 tag = ERRONEOUS;
493 start = 0;
494 pos = 0;
495 end = Integer.MAX_VALUE;
496 }
497
498 Info(JCTree tree) {
499 this.tree = tree;
500 tag = tree.getTag();
501 start = TreeInfo.getStartPos(tree);
502 pos = tree.pos;
503 end = TreeInfo.getEndPos(tree);
504 }
505
506 @Override
507 public String toString() {
508 return treeUtil.nameFromTag(tree.getTag()) + "[start:" + start + ",pos:" + pos + ",end:" + end + "]";
509 }
510
511 final JCTree tree;
512 final JCTree.Tag tag;
513 final int start;
514 final int pos;
515 final int end;
516 }
517
518 /**
519 * Names for tree tags.
520 */
521 private static class TreeUtil {
522 String nameFromTag(JCTree.Tag tag) {
523 String name = tag.name();
524 return (name == null) ? "??" : name;
525 }
526
527 List<Field> getFieldsOfType(JCTree t, List<String> excludeNames, Class<?>... types) {
528 List<Field> buf = new ArrayList<Field>();
529 for (Field f : t.getClass().getDeclaredFields()) {
530 if (!excludeNames.contains(f.getName())) {
531 for (Class<?> type : types) {
532 if (type.isAssignableFrom(f.getType())) {
533 f.setAccessible(true);
534 buf.add(f);
535 break;
536 }
537 }
538 }
539 }
540 return buf;
541 }
542 }
543
544 /**
545 * GUI viewer for issues found by TreePosTester. The viewer provides a drop
546 * down list for selecting error conditions, a header area providing details
547 * about an error, and a text area with the ranges of text highlighted as
548 * appropriate.
549 */
550 private class Viewer extends JFrame {
551 /**
552 * Create a viewer.
553 */
554 Viewer() {
555 initGUI();
556 }
557
558 /**
559 * Add another entry to the list of errors.
560 * @param file The file containing the error
561 * @param check The condition that was being tested, and which failed
562 * @param encl the enclosing tree node
563 * @param self the tree node containing the error
564 */
565 void addEntry(JavaFileObject file, String check, Info encl, Info self) {
566 Entry e = new Entry(file, check, encl, self);
567 DefaultComboBoxModel m = (DefaultComboBoxModel) entries.getModel();
568 m.addElement(e);
569 if (m.getSize() == 1)
570 entries.setSelectedItem(e);
571 }
572
573 /**
574 * Initialize the GUI window.
575 */
576 private void initGUI() {
577 JPanel head = new JPanel(new GridBagLayout());
578 GridBagConstraints lc = new GridBagConstraints();
579 GridBagConstraints fc = new GridBagConstraints();
580 fc.anchor = GridBagConstraints.WEST;
581 fc.fill = GridBagConstraints.HORIZONTAL;
582 fc.gridwidth = GridBagConstraints.REMAINDER;
583
584 entries = new JComboBox();
585 entries.addActionListener(new ActionListener() {
586 public void actionPerformed(ActionEvent e) {
587 showEntry((Entry) entries.getSelectedItem());
588 }
589 });
590 fc.insets.bottom = 10;
591 head.add(entries, fc);
592 fc.insets.bottom = 0;
593 head.add(new JLabel("check:"), lc);
594 head.add(checkField = createTextField(80), fc);
595 fc.fill = GridBagConstraints.NONE;
596 head.add(setBackground(new JLabel("encl:"), enclColor), lc);
597 head.add(enclPanel = new InfoPanel(), fc);
598 head.add(setBackground(new JLabel("self:"), selfColor), lc);
599 head.add(selfPanel = new InfoPanel(), fc);
600 add(head, BorderLayout.NORTH);
601
602 body = new JTextArea();
603 body.setFont(Font.decode(Font.MONOSPACED));
604 body.addCaretListener(new CaretListener() {
605 public void caretUpdate(CaretEvent e) {
606 int dot = e.getDot();
607 int mark = e.getMark();
608 if (dot == mark)
609 statusText.setText("dot: " + dot);
610 else
611 statusText.setText("dot: " + dot + ", mark:" + mark);
612 }
613 });
614 JScrollPane p = new JScrollPane(body,
615 JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
616 JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
617 p.setPreferredSize(new Dimension(640, 480));
618 add(p, BorderLayout.CENTER);
619
620 statusText = createTextField(80);
621 add(statusText, BorderLayout.SOUTH);
622
623 pack();
624 setLocationRelativeTo(null); // centered on screen
625 setVisible(true);
626 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
627 }
628
629 /** Show an entry that has been selected. */
630 private void showEntry(Entry e) {
631 try {
632 // update simple fields
633 setTitle(e.file.getName());
634 checkField.setText(e.check);
635 enclPanel.setInfo(e.encl);
636 selfPanel.setInfo(e.self);
637 // show file text with highlights
638 body.setText(e.file.getCharContent(true).toString());
639 Highlighter highlighter = body.getHighlighter();
640 highlighter.removeAllHighlights();
641 addHighlight(highlighter, e.encl, enclColor);
642 addHighlight(highlighter, e.self, selfColor);
643 scroll(body, getMinPos(enclPanel.info, selfPanel.info));
644 } catch (IOException ex) {
645 body.setText("Cannot read " + e.file.getName() + ": " + e);
646 }
647 }
648
649 /** Create a test field. */
650 private JTextField createTextField(int width) {
651 JTextField f = new JTextField(width);
652 f.setEditable(false);
653 f.setBorder(null);
654 return f;
655 }
656
657 /** Add a highlighted region based on the positions in an Info object. */
658 private void addHighlight(Highlighter h, Info info, Color c) {
659 int start = info.start;
660 int end = info.end;
661 if (start == -1 && end == -1)
662 return;
663 if (start == -1)
664 start = end;
665 if (end == -1)
666 end = start;
667 try {
668 h.addHighlight(info.start, info.end,
669 new DefaultHighlighter.DefaultHighlightPainter(c));
670 if (info.pos != -1) {
671 Color c2 = new Color(c.getRed(), c.getGreen(), c.getBlue(), (int)(.4f * 255)); // 40%
672 h.addHighlight(info.pos, info.pos + 1,
673 new DefaultHighlighter.DefaultHighlightPainter(c2));
674 }
675 } catch (BadLocationException e) {
676 e.printStackTrace();
677 }
678 }
679
680 /** Get the minimum valid position in a set of info objects. */
681 private int getMinPos(Info... values) {
682 int i = Integer.MAX_VALUE;
683 for (Info info: values) {
684 if (info.start >= 0) i = Math.min(i, info.start);
685 if (info.pos >= 0) i = Math.min(i, info.pos);
686 if (info.end >= 0) i = Math.min(i, info.end);
687 }
688 return (i == Integer.MAX_VALUE) ? 0 : i;
689 }
690
691 /** Set the background on a component. */
692 private JComponent setBackground(JComponent comp, Color c) {
693 comp.setOpaque(true);
694 comp.setBackground(c);
695 return comp;
696 }
697
698 /** Scroll a text area to display a given position near the middle of the visible area. */
699 private void scroll(final JTextArea t, final int pos) {
700 // Using invokeLater appears to give text a chance to sort itself out
701 // before the scroll happens; otherwise scrollRectToVisible doesn't work.
702 // Maybe there's a better way to sync with the text...
703 EventQueue.invokeLater(new Runnable() {
704 public void run() {
705 try {
706 Rectangle r = t.modelToView(pos);
707 JScrollPane p = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, t);
708 r.y = Math.max(0, r.y - p.getHeight() * 2 / 5);
709 r.height += p.getHeight() * 4 / 5;
710 t.scrollRectToVisible(r);
711 } catch (BadLocationException ignore) {
712 }
713 }
714 });
715 }
716
717 private JComboBox entries;
718 private JTextField checkField;
719 private InfoPanel enclPanel;
720 private InfoPanel selfPanel;
721 private JTextArea body;
722 private JTextField statusText;
723
724 private Color selfColor = new Color(0.f, 1.f, 0.f, 0.2f); // 20% green
725 private Color enclColor = new Color(1.f, 0.f, 0.f, 0.2f); // 20% red
726
727 /** Panel to display an Info object. */
728 private class InfoPanel extends JPanel {
729 InfoPanel() {
730 add(tagName = createTextField(20));
731 add(new JLabel("start:"));
732 add(addListener(start = createTextField(6)));
733 add(new JLabel("pos:"));
734 add(addListener(pos = createTextField(6)));
735 add(new JLabel("end:"));
736 add(addListener(end = createTextField(6)));
737 }
738
739 void setInfo(Info info) {
740 this.info = info;
741 tagName.setText(treeUtil.nameFromTag(info.tag));
742 start.setText(String.valueOf(info.start));
743 pos.setText(String.valueOf(info.pos));
744 end.setText(String.valueOf(info.end));
745 }
746
747 JTextField addListener(final JTextField f) {
748 f.addMouseListener(new MouseAdapter() {
749 @Override
750 public void mouseClicked(MouseEvent e) {
751 body.setCaretPosition(Integer.valueOf(f.getText()));
752 body.getCaret().setVisible(true);
753 }
754 });
755 return f;
756 }
757
758 Info info;
759 JTextField tagName;
760 JTextField start;
761 JTextField pos;
762 JTextField end;
763 }
764
765 /** Object to record information about an error to be displayed. */
766 private class Entry {
767 Entry(JavaFileObject file, String check, Info encl, Info self) {
768 this.file = file;
769 this.check = check;
770 this.encl = encl;
771 this.self= self;
772 }
773
774 @Override
775 public String toString() {
776 return file.getName() + " " + check + " " + getMinPos(encl, self);
777 }
778
779 final JavaFileObject file;
780 final String check;
781 final Info encl;
782 final Info self;
783 }
784 }
785
786 /** Number of files that have been analyzed. */
787 static AtomicInteger fileCount = new AtomicInteger();
788
789 }