1 /*
2 * Copyright (c) 2010, 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 import java.awt.BorderLayout;
25 import java.awt.Color;
26 import java.awt.Dimension;
27 import java.awt.EventQueue;
28 import java.awt.Font;
29 import java.awt.GridBagConstraints;
30 import java.awt.GridBagLayout;
31 import java.awt.Rectangle;
32 import java.awt.event.ActionEvent;
33 import java.awt.event.ActionListener;
34 import java.awt.event.MouseAdapter;
35 import java.awt.event.MouseEvent;
36 import java.io.File;
37 import java.io.IOException;
38 import java.io.PrintStream;
39 import java.io.PrintWriter;
40 import java.io.StringWriter;
41 import java.lang.reflect.Field;
42 import java.lang.reflect.Modifier;
43 import java.nio.charset.Charset;
44 import java.util.ArrayList;
45 import java.util.Collections;
46 import java.util.HashMap;
47 import java.util.HashSet;
48 import java.util.Iterator;
49 import java.util.List;
50 import java.util.Map;
51 import java.util.Set;
52 import javax.swing.DefaultComboBoxModel;
53 import javax.swing.JComboBox;
54 import javax.swing.JComponent;
55 import javax.swing.JFrame;
56 import javax.swing.JLabel;
57 import javax.swing.JPanel;
58 import javax.swing.JScrollPane;
59 import javax.swing.JTextArea;
60 import javax.swing.JTextField;
61 import javax.swing.SwingUtilities;
62 import javax.swing.event.CaretEvent;
63 import javax.swing.event.CaretListener;
64 import javax.swing.text.BadLocationException;
65 import javax.swing.text.DefaultHighlighter;
66 import javax.swing.text.Highlighter;
67 import javax.tools.Diagnostic;
68 import javax.tools.DiagnosticListener;
69 import javax.tools.JavaFileObject;
70 import javax.tools.StandardJavaFileManager;
71
72 import com.sun.source.tree.CompilationUnitTree;
73 import com.sun.source.util.JavacTask;
74 import com.sun.tools.javac.api.JavacTool;
75 import com.sun.tools.javac.code.Flags;
76 import com.sun.tools.javac.tree.JCTree;
77 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
78 import com.sun.tools.javac.tree.JCTree.JCNewClass;
79 import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
80 import com.sun.tools.javac.tree.TreeInfo;
81 import com.sun.tools.javac.tree.TreeScanner;
82
83 import static com.sun.tools.javac.util.Position.NOPOS;
84
85 /**
86 * Utility and test program to check validity of tree positions for tree nodes.
87 * The program can be run standalone, or as a jtreg test. In standalone mode,
88 * errors can be displayed in a gui viewer. For info on command line args,
89 * run program with no args.
90 *
91 * <p>
92 * jtreg: Note that by using the -r switch in the test description below, this test
93 * will process all java files in the langtools/test directory, thus implicitly
94 * covering any new language features that may be tested in this test suite.
95 */
96
97 /*
98 * @test
99 * @bug 6919889
100 * @summary assorted position errors in compiler syntax trees
101 * @run main TreePosTest -q -r -ef ./tools/javac/typeAnnotations -ef ./tools/javap/typeAnnotations -et ANNOTATED_TYPE .
102 */
103 public class TreePosTest {
104 /**
105 * Main entry point.
106 * If test.src is set, program runs in jtreg mode, and will throw an Error
107 * if any errors arise, otherwise System.exit will be used, unless the gui
108 * viewer is being used. In jtreg mode, the default base directory for file
109 * args is the value of ${test.src}. In jtreg mode, the -r option can be
110 * given to change the default base directory to the root test directory.
111 */
112 public static void main(String... args) {
113 String testSrc = System.getProperty("test.src");
114 File baseDir = (testSrc == null) ? null : new File(testSrc);
115 boolean ok = new TreePosTest().run(baseDir, args);
116 if (!ok) {
117 if (testSrc != null) // jtreg mode
118 throw new Error("failed");
119 else
120 System.exit(1);
121 }
122 }
123
124 /**
125 * Run the program. A base directory can be provided for file arguments.
126 * In jtreg mode, the -r option can be given to change the default base
127 * directory to the test root directory. For other options, see usage().
128 * @param baseDir base directory for any file arguments.
129 * @param args command line args
130 * @return true if successful or in gui mode
131 */
132 boolean run(File baseDir, String... args) {
133 if (args.length == 0) {
134 usage(System.out);
135 return true;
136 }
137
138 List<File> files = new ArrayList<File>();
139 for (int i = 0; i < args.length; i++) {
140 String arg = args[i];
141 if (arg.equals("-encoding") && i + 1 < args.length)
142 encoding = args[++i];
143 else if (arg.equals("-gui"))
144 gui = true;
145 else if (arg.equals("-q"))
146 quiet = true;
147 else if (arg.equals("-v"))
148 verbose = true;
149 else if (arg.equals("-t") && i + 1 < args.length)
150 tags.add(args[++i]);
151 else if (arg.equals("-ef") && i + 1 < args.length)
152 excludeFiles.add(new File(baseDir, args[++i]));
153 else if (arg.equals("-et") && i + 1 < args.length)
154 excludeTags.add(args[++i]);
155 else if (arg.equals("-r")) {
156 if (excludeFiles.size() > 0)
157 throw new Error("-r must be used before -ef");
158 File d = baseDir;
159 while (!new File(d, "TEST.ROOT").exists()) {
160 d = d.getParentFile();
161 if (d == null)
162 throw new Error("cannot find TEST.ROOT");
163 }
164 baseDir = d;
165 }
166 else if (arg.startsWith("-"))
167 throw new Error("unknown option: " + arg);
168 else {
169 while (i < args.length)
170 files.add(new File(baseDir, args[i++]));
171 }
172 }
173
174 for (File file: files) {
175 if (file.exists())
176 test(file);
177 else
178 error("File not found: " + file);
179 }
180
181 if (fileCount != 1)
182 System.err.println(fileCount + " files read");
183 if (errors > 0)
184 System.err.println(errors + " errors");
185
186 return (gui || errors == 0);
187 }
188
189 /**
190 * Print command line help.
191 * @param out output stream
192 */
193 void usage(PrintStream out) {
194 out.println("Usage:");
195 out.println(" java TreePosTest options... files...");
196 out.println("");
197 out.println("where options include:");
198 out.println("-gui Display returns in a GUI viewer");
199 out.println("-q Quiet: don't report on inapplicable files");
200 out.println("-v Verbose: report on files as they are being read");
201 out.println("-t tag Limit checks to tree nodes with this tag");
202 out.println(" Can be repeated if desired");
203 out.println("-ef file Exclude file or directory");
204 out.println("-et tag Exclude tree nodes with given tag name");
205 out.println("");
206 out.println("files may be directories or files");
207 out.println("directories will be scanned recursively");
208 out.println("non java files, or java files which cannot be parsed, will be ignored");
209 out.println("");
210 }
211
212 /**
213 * Test a file. If the file is a directory, it will be recursively scanned
214 * for java files.
215 * @param file the file or directory to test
216 */
217 void test(File file) {
218 if (excludeFiles.contains(file)) {
219 if (!quiet)
220 error("File " + file + " excluded");
221 return;
222 }
223
224 if (file.isDirectory()) {
225 for (File f: file.listFiles()) {
226 test(f);
227 }
228 return;
229 }
230
231 if (file.isFile() && file.getName().endsWith(".java")) {
232 try {
233 if (verbose)
234 System.err.println(file);
235 fileCount++;
236 PosTester p = new PosTester();
237 p.test(read(file));
238 } catch (ParseException e) {
239 if (!quiet) {
240 error("Error parsing " + file + "\n" + e.getMessage());
241 }
242 } catch (IOException e) {
243 error("Error reading " + file + ": " + e);
244 }
245 return;
246 }
247
248 if (!quiet)
249 error("File " + file + " ignored");
250 }
251
252 // See CR: 6982992 Tests CheckAttributedTree.java, JavacTreeScannerTest.java, and SourceTreeeScannerTest.java timeout
253 StringWriter sw = new StringWriter();
254 PrintWriter pw = new PrintWriter(sw);
255 Reporter r = new Reporter(pw);
256 JavacTool tool = JavacTool.create();
257 StandardJavaFileManager fm = tool.getStandardFileManager(r, null, null);
258
259 /**
260 * Read a file.
261 * @param file the file to be read
262 * @return the tree for the content of the file
263 * @throws IOException if any IO errors occur
264 * @throws TreePosTest.ParseException if any errors occur while parsing the file
265 */
266 JCCompilationUnit read(File file) throws IOException, ParseException {
267 JavacTool tool = JavacTool.create();
268 r.errors = 0;
269 Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(file);
270 JavacTask task = tool.getTask(pw, fm, r, Collections.<String>emptyList(), null, files);
271 Iterable<? extends CompilationUnitTree> trees = task.parse();
272 pw.flush();
273 if (r.errors > 0)
274 throw new ParseException(sw.toString());
275 Iterator<? extends CompilationUnitTree> iter = trees.iterator();
276 if (!iter.hasNext())
277 throw new Error("no trees found");
278 JCCompilationUnit t = (JCCompilationUnit) iter.next();
279 if (iter.hasNext())
280 throw new Error("too many trees found");
281 return t;
282 }
283
284 /**
285 * Report an error. When the program is complete, the program will either
286 * exit or throw an Error if any errors have been reported.
287 * @param msg the error message
288 */
289 void error(String msg) {
290 System.err.println(msg);
291 errors++;
292 }
293
294 /** Number of files that have been analyzed. */
295 int fileCount;
296 /** Number of errors reported. */
297 int errors;
298 /** Flag: don't report irrelevant files. */
299 boolean quiet;
300 /** Flag: report files as they are processed. */
301 boolean verbose;
302 /** Flag: show errors in GUI viewer. */
303 boolean gui;
304 /** Option: encoding for test files. */
305 String encoding;
306 /** The GUI viewer for errors. */
307 Viewer viewer;
308 /** The set of tags for tree nodes to be analyzed; if empty, all tree nodes
309 * are analyzed. */
310 Set<String> tags = new HashSet<String>();
311 /** Set of files and directories to be excluded from analysis. */
312 Set<File> excludeFiles = new HashSet<File>();
313 /** Set of tag names to be excluded from analysis. */
314 Set<String> excludeTags = new HashSet<String>();
315 /** Table of printable names for tree tag values. */
316 TagNames tagNames = new TagNames();
317
318 /**
319 * Main class for testing assertions concerning tree positions for tree nodes.
320 */
321 private class PosTester extends TreeScanner {
322 void test(JCCompilationUnit tree) {
323 sourcefile = tree.sourcefile;
324 endPosTable = tree.endPositions;
325 encl = new Info();
326 tree.accept(this);
327 }
328
329 @Override
330 public void scan(JCTree tree) {
331 if (tree == null)
332 return;
333
334 Info self = new Info(tree, endPosTable);
335 if (check(encl, self)) {
336 // Modifiers nodes are present throughout the tree even where
337 // there is no corresponding source text.
338 // Redundant semicolons in a class definition can cause empty
339 // initializer blocks with no positions.
340 if ((self.tag == JCTree.MODIFIERS || self.tag == JCTree.BLOCK)
341 && self.pos == NOPOS) {
342 // If pos is NOPOS, so should be the start and end positions
343 check("start == NOPOS", encl, self, self.start == NOPOS);
344 check("end == NOPOS", encl, self, self.end == NOPOS);
345 } else {
346 // For this node, start , pos, and endpos should be all defined
347 check("start != NOPOS", encl, self, self.start != NOPOS);
348 check("pos != NOPOS", encl, self, self.pos != NOPOS);
349 check("end != NOPOS", encl, self, self.end != NOPOS);
350 // The following should normally be ordered
351 // encl.start <= start <= pos <= end <= encl.end
352 // In addition, the position of the enclosing node should be
353 // within this node.
354 // The primary exceptions are for array type nodes, because of the
355 // need to support legacy syntax:
356 // e.g. int a[]; int[] b[]; int f()[] { return null; }
357 // and because of inconsistent nesting of left and right of
358 // array declarations:
359 // e.g. int[][] a = new int[2][];
360 check("encl.start <= start", encl, self, encl.start <= self.start);
361 check("start <= pos", encl, self, self.start <= self.pos);
362 if (!(self.tag == JCTree.TYPEARRAY
363 && (encl.tag == JCTree.VARDEF ||
364 encl.tag == JCTree.METHODDEF ||
365 encl.tag == JCTree.TYPEARRAY))) {
366 check("encl.pos <= start || end <= encl.pos",
367 encl, self, encl.pos <= self.start || self.end <= encl.pos);
368 }
369 check("pos <= end", encl, self, self.pos <= self.end);
370 if (!(self.tag == JCTree.TYPEARRAY && encl.tag == JCTree.TYPEARRAY)) {
371 check("end <= encl.end", encl, self, self.end <= encl.end);
372 }
373 }
374 }
375
376 Info prevEncl = encl;
377 encl = self;
378 tree.accept(this);
379 encl = prevEncl;
380 }
381
382 @Override
383 public void visitVarDef(JCVariableDecl tree) {
384 // enum member declarations are desugared in the parser and have
385 // ill-defined semantics for tree positions, so for now, we
386 // skip the synthesized bits and just check parts which came from
387 // the original source text
388 if ((tree.mods.flags & Flags.ENUM) != 0) {
389 scan(tree.mods);
390 if (tree.init != null) {
391 if (tree.init.getTag() == JCTree.NEWCLASS) {
392 JCNewClass init = (JCNewClass) tree.init;
393 if (init.args != null && init.args.nonEmpty()) {
394 scan(init.args);
395 }
396 if (init.def != null && init.def.defs != null) {
397 scan(init.def.defs);
398 }
399 }
400 }
401 } else
402 super.visitVarDef(tree);
403 }
404
405 boolean check(Info encl, Info self) {
406 if (excludeTags.size() > 0) {
407 if (encl != null && excludeTags.contains(tagNames.get(encl.tag))
408 || excludeTags.contains(tagNames.get(self.tag)))
409 return false;
410 }
411 return tags.size() == 0 || tags.contains(tagNames.get(self.tag));
412 }
413
414 void check(String label, Info encl, Info self, boolean ok) {
415 if (!ok) {
416 if (gui) {
417 if (viewer == null)
418 viewer = new Viewer();
419 viewer.addEntry(sourcefile, label, encl, self);
420 }
421
422 String s = self.tree.toString();
423 String msg = sourcefile.getName() + ": " + label + ": " +
424 "encl:" + encl + " this:" + self + "\n" +
425 s.substring(0, Math.min(80, s.length())).replaceAll("[\r\n]+", " ");
426 error(msg);
427 }
428 }
429
430 JavaFileObject sourcefile;
431 Map<JCTree, Integer> endPosTable;
432 Info encl;
433
434 }
435
436 /**
437 * Utility class providing easy access to position and other info for a tree node.
438 */
439 private class Info {
440 Info() {
441 tree = null;
442 tag = JCTree.ERRONEOUS;
443 start = 0;
444 pos = 0;
445 end = Integer.MAX_VALUE;
446 }
447
448 Info(JCTree tree, Map<JCTree, Integer> endPosTable) {
449 this.tree = tree;
450 tag = tree.getTag();
451 start = TreeInfo.getStartPos(tree);
452 pos = tree.pos;
453 end = TreeInfo.getEndPos(tree, endPosTable);
454 }
455
456 @Override
457 public String toString() {
458 return tagNames.get(tree.getTag()) + "[start:" + start + ",pos:" + pos + ",end:" + end + "]";
459 }
460
461 final JCTree tree;
462 final int tag;
463 final int start;
464 final int pos;
465 final int end;
466 }
467
468 /**
469 * Names for tree tags.
470 * javac does not provide an API to convert tag values to strings, so this class uses
471 * reflection to determine names of public static final int values in JCTree.
472 */
473 private static class TagNames {
474 String get(int tag) {
475 if (map == null) {
476 map = new HashMap<Integer, String>();
477 Class c = JCTree.class;
478 for (Field f : c.getDeclaredFields()) {
479 if (f.getType().equals(int.class)) {
480 int mods = f.getModifiers();
481 if (Modifier.isPublic(mods) && Modifier.isStatic(mods) && Modifier.isFinal(mods)) {
482 try {
483 map.put(f.getInt(null), f.getName());
484 } catch (IllegalAccessException e) {
485 }
486 }
487 }
488 }
489 }
490 String name = map.get(tag);
491 return (name == null) ? "??" : name;
492 }
493
494 private Map<Integer, String> map;
495 }
496
497 /**
498 * Thrown when errors are found parsing a java file.
499 */
500 private static class ParseException extends Exception {
501 ParseException(String msg) {
502 super(msg);
503 }
504 }
505
506 /**
507 * DiagnosticListener to report diagnostics and count any errors that occur.
508 */
509 private static class Reporter implements DiagnosticListener<JavaFileObject> {
510 Reporter(PrintWriter out) {
511 this.out = out;
512 }
513
514 public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
515 out.println(diagnostic);
516 switch (diagnostic.getKind()) {
517 case ERROR:
518 errors++;
519 }
520 }
521 int errors;
522 PrintWriter out;
523 }
524
525 /**
526 * GUI viewer for issues found by TreePosTester. The viewer provides a drop
527 * down list for selecting error conditions, a header area providing details
528 * about an error, and a text area with the ranges of text highlighted as
529 * appropriate.
530 */
531 private class Viewer extends JFrame {
532 /**
533 * Create a viewer.
534 */
535 Viewer() {
536 initGUI();
537 }
538
539 /**
540 * Add another entry to the list of errors.
541 * @param file The file containing the error
542 * @param check The condition that was being tested, and which failed
543 * @param encl the enclosing tree node
544 * @param self the tree node containing the error
545 */
546 void addEntry(JavaFileObject file, String check, Info encl, Info self) {
547 Entry e = new Entry(file, check, encl, self);
548 DefaultComboBoxModel m = (DefaultComboBoxModel) entries.getModel();
549 m.addElement(e);
550 if (m.getSize() == 1)
551 entries.setSelectedItem(e);
552 }
553
554 /**
555 * Initialize the GUI window.
556 */
557 private void initGUI() {
558 JPanel head = new JPanel(new GridBagLayout());
559 GridBagConstraints lc = new GridBagConstraints();
560 GridBagConstraints fc = new GridBagConstraints();
561 fc.anchor = GridBagConstraints.WEST;
562 fc.fill = GridBagConstraints.HORIZONTAL;
563 fc.gridwidth = GridBagConstraints.REMAINDER;
564
565 entries = new JComboBox();
566 entries.addActionListener(new ActionListener() {
567 public void actionPerformed(ActionEvent e) {
568 showEntry((Entry) entries.getSelectedItem());
569 }
570 });
571 fc.insets.bottom = 10;
572 head.add(entries, fc);
573 fc.insets.bottom = 0;
574 head.add(new JLabel("check:"), lc);
575 head.add(checkField = createTextField(80), fc);
576 fc.fill = GridBagConstraints.NONE;
577 head.add(setBackground(new JLabel("encl:"), enclColor), lc);
578 head.add(enclPanel = new InfoPanel(), fc);
579 head.add(setBackground(new JLabel("self:"), selfColor), lc);
580 head.add(selfPanel = new InfoPanel(), fc);
581 add(head, BorderLayout.NORTH);
582
583 body = new JTextArea();
584 body.setFont(Font.decode(Font.MONOSPACED));
585 body.addCaretListener(new CaretListener() {
586 public void caretUpdate(CaretEvent e) {
587 int dot = e.getDot();
588 int mark = e.getMark();
589 if (dot == mark)
590 statusText.setText("dot: " + dot);
591 else
592 statusText.setText("dot: " + dot + ", mark:" + mark);
593 }
594 });
595 JScrollPane p = new JScrollPane(body,
596 JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
597 JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
598 p.setPreferredSize(new Dimension(640, 480));
599 add(p, BorderLayout.CENTER);
600
601 statusText = createTextField(80);
602 add(statusText, BorderLayout.SOUTH);
603
604 pack();
605 setLocationRelativeTo(null); // centered on screen
606 setVisible(true);
607 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
608 }
609
610 /** Show an entry that has been selected. */
611 private void showEntry(Entry e) {
612 try {
613 // update simple fields
614 setTitle(e.file.getName());
615 checkField.setText(e.check);
616 enclPanel.setInfo(e.encl);
617 selfPanel.setInfo(e.self);
618 // show file text with highlights
619 body.setText(e.file.getCharContent(true).toString());
620 Highlighter highlighter = body.getHighlighter();
621 highlighter.removeAllHighlights();
622 addHighlight(highlighter, e.encl, enclColor);
623 addHighlight(highlighter, e.self, selfColor);
624 scroll(body, getMinPos(enclPanel.info, selfPanel.info));
625 } catch (IOException ex) {
626 body.setText("Cannot read " + e.file.getName() + ": " + e);
627 }
628 }
629
630 /** Create a test field. */
631 private JTextField createTextField(int width) {
632 JTextField f = new JTextField(width);
633 f.setEditable(false);
634 f.setBorder(null);
635 return f;
636 }
637
638 /** Add a highlighted region based on the positions in an Info object. */
639 private void addHighlight(Highlighter h, Info info, Color c) {
640 int start = info.start;
641 int end = info.end;
642 if (start == -1 && end == -1)
643 return;
644 if (start == -1)
645 start = end;
646 if (end == -1)
647 end = start;
648 try {
649 h.addHighlight(info.start, info.end,
650 new DefaultHighlighter.DefaultHighlightPainter(c));
651 if (info.pos != -1) {
652 Color c2 = new Color(c.getRed(), c.getGreen(), c.getBlue(), (int)(.4f * 255)); // 40%
653 h.addHighlight(info.pos, info.pos + 1,
654 new DefaultHighlighter.DefaultHighlightPainter(c2));
655 }
656 } catch (BadLocationException e) {
657 e.printStackTrace();
658 }
659 }
660
661 /** Get the minimum valid position in a set of info objects. */
662 private int getMinPos(Info... values) {
663 int i = Integer.MAX_VALUE;
664 for (Info info: values) {
665 if (info.start >= 0) i = Math.min(i, info.start);
666 if (info.pos >= 0) i = Math.min(i, info.pos);
667 if (info.end >= 0) i = Math.min(i, info.end);
668 }
669 return (i == Integer.MAX_VALUE) ? 0 : i;
670 }
671
672 /** Set the background on a component. */
673 private JComponent setBackground(JComponent comp, Color c) {
674 comp.setOpaque(true);
675 comp.setBackground(c);
676 return comp;
677 }
678
679 /** Scroll a text area to display a given position near the middle of the visible area. */
680 private void scroll(final JTextArea t, final int pos) {
681 // Using invokeLater appears to give text a chance to sort itself out
682 // before the scroll happens; otherwise scrollRectToVisible doesn't work.
683 // Maybe there's a better way to sync with the text...
684 EventQueue.invokeLater(new Runnable() {
685 public void run() {
686 try {
687 Rectangle r = t.modelToView(pos);
688 JScrollPane p = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, t);
689 r.y = Math.max(0, r.y - p.getHeight() * 2 / 5);
690 r.height += p.getHeight() * 4 / 5;
691 t.scrollRectToVisible(r);
692 } catch (BadLocationException ignore) {
693 }
694 }
695 });
696 }
697
698 private JComboBox entries;
699 private JTextField checkField;
700 private InfoPanel enclPanel;
701 private InfoPanel selfPanel;
702 private JTextArea body;
703 private JTextField statusText;
704
705 private Color selfColor = new Color(0.f, 1.f, 0.f, 0.2f); // 20% green
706 private Color enclColor = new Color(1.f, 0.f, 0.f, 0.2f); // 20% red
707
708 /** Panel to display an Info object. */
709 private class InfoPanel extends JPanel {
710 InfoPanel() {
711 add(tagName = createTextField(20));
712 add(new JLabel("start:"));
713 add(addListener(start = createTextField(6)));
714 add(new JLabel("pos:"));
715 add(addListener(pos = createTextField(6)));
716 add(new JLabel("end:"));
717 add(addListener(end = createTextField(6)));
718 }
719
720 void setInfo(Info info) {
721 this.info = info;
722 tagName.setText(tagNames.get(info.tag));
723 start.setText(String.valueOf(info.start));
724 pos.setText(String.valueOf(info.pos));
725 end.setText(String.valueOf(info.end));
726 }
727
728 JTextField addListener(final JTextField f) {
729 f.addMouseListener(new MouseAdapter() {
730 @Override
731 public void mouseClicked(MouseEvent e) {
732 body.setCaretPosition(Integer.valueOf(f.getText()));
733 body.getCaret().setVisible(true);
734 }
735 });
736 return f;
737 }
738
739 Info info;
740 JTextField tagName;
741 JTextField start;
742 JTextField pos;
743 JTextField end;
744 }
745
746 /** Object to record information about an error to be displayed. */
747 private class Entry {
748 Entry(JavaFileObject file, String check, Info encl, Info self) {
749 this.file = file;
750 this.check = check;
751 this.encl = encl;
752 this.self= self;
753 }
754
755 @Override
756 public String toString() {
757 return file.getName() + " " + check + " " + getMinPos(encl, self);
758 }
759
760 final JavaFileObject file;
761 final String check;
762 final Info encl;
763 final Info self;
764 }
765 }
766 }
767