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 import static com.sun.tools.javac.tree.JCTree.Tag.*; 85 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 */ 97 98 /* 99 * @test 100 * @bug 6919889 101 * @summary assorted position errors in compiler syntax trees 102 * @run main TreePosTest -q -r -ef ./tools/javac/typeAnnotations -ef ./tools/javap/typeAnnotations -et ANNOTATED_TYPE . 103 */ 104 public class TreePosTest { 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 TreePosTest().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 } 124 125 /** 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 } 138 139 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 d = d.getParentFile(); 162 if (d == null) 163 throw new Error("cannot find TEST.ROOT"); 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 } 174 175 for (File file: files) { 176 if (file.exists()) 177 test(file); 178 else 179 error("File not found: " + file); 180 } 181 182 if (fileCount != 1) 183 System.err.println(fileCount + " files read"); 184 if (errors > 0) 185 System.err.println(errors + " errors"); 186 187 return (gui || errors == 0); 188 } 189 190 /** 191 * Print command line help. 192 * @param out output stream 193 */ 194 void usage(PrintStream out) { 195 out.println("Usage:"); 196 out.println(" java TreePosTest options... files..."); 197 out.println(""); 198 out.println("where options include:"); 199 out.println("-gui Display returns in a GUI viewer"); 200 out.println("-q Quiet: don't report on inapplicable files"); 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 } 212 213 /** 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 } 224 225 if (file.isDirectory()) { 226 for (File f: file.listFiles()) { 227 test(f); 228 } 229 return; 230 } 231 232 if (file.isFile() && file.getName().endsWith(".java")) { 233 try { 234 if (verbose) 235 System.err.println(file); 236 fileCount++; 237 PosTester p = new PosTester(); 238 p.test(read(file)); 239 } catch (ParseException e) { 240 if (!quiet) { 241 error("Error parsing " + file + "\n" + e.getMessage()); 242 } 243 } catch (IOException e) { 244 error("Error reading " + file + ": " + e); 245 } 246 return; 247 } 248 249 if (!quiet) 250 error("File " + file + " ignored"); 251 } 252 253 // 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); 259 260 /** 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 JCCompilationUnit read(File file) throws IOException, ParseException { 268 JavacTool tool = JavacTool.create(); 269 r.errors = 0; 270 Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(file); 271 JavacTask task = tool.getTask(pw, fm, r, Collections.<String>emptyList(), null, files); 272 Iterable<? extends CompilationUnitTree> trees = task.parse(); 273 pw.flush(); 274 if (r.errors > 0) 275 throw new ParseException(sw.toString()); 276 Iterator<? extends CompilationUnitTree> iter = trees.iterator(); 277 if (!iter.hasNext()) 278 throw new Error("no trees found"); 279 JCCompilationUnit t = (JCCompilationUnit) iter.next(); 280 if (iter.hasNext()) 281 throw new Error("too many trees found"); 282 return t; 283 } 284 285 /** 286 * Report an error. When the program is complete, the program will either 287 * exit or throw an Error if any errors have been reported. 288 * @param msg the error message 289 */ 290 void error(String msg) { 291 System.err.println(msg); 292 errors++; 293 } 294 295 /** Number of files that have been analyzed. */ 296 int fileCount; 297 /** Number of errors reported. */ 298 int errors; 299 /** Flag: don't report irrelevant files. */ 300 boolean quiet; 301 /** Flag: report files as they are processed. */ 302 boolean verbose; 303 /** Flag: show errors in GUI viewer. */ 304 boolean gui; 305 /** Option: encoding for test files. */ 306 String encoding; 307 /** The GUI viewer for errors. */ 308 Viewer viewer; 309 /** The set of tags for tree nodes to be analyzed; if empty, all tree nodes 310 * are analyzed. */ 311 Set<String> tags = new HashSet<String>(); 312 /** Set of files and directories to be excluded from analysis. */ 313 Set<File> excludeFiles = new HashSet<File>(); 314 /** Set of tag names to be excluded from analysis. */ 315 Set<String> excludeTags = new HashSet<String>(); 316 /** Table of printable names for tree tag values. */ 317 TagNames tagNames = new TagNames(); 318 319 /** 320 * Main class for testing assertions concerning tree positions for tree nodes. 321 */ 322 private class PosTester extends TreeScanner { 323 void test(JCCompilationUnit tree) { 324 sourcefile = tree.sourcefile; 325 endPosTable = tree.endPositions; 326 encl = new Info(); 327 tree.accept(this); 328 } 329 330 @Override 331 public void scan(JCTree tree) { 332 if (tree == null) 333 return; 334 335 Info self = new Info(tree, endPosTable); 336 if (check(encl, self)) { 337 // Modifiers nodes are present throughout the tree even where 338 // there is no corresponding source text. 339 // Redundant semicolons in a class definition can cause empty 340 // initializer blocks with no positions. 341 if ((self.tag == MODIFIERS || self.tag == BLOCK) 342 && self.pos == NOPOS) { 343 // If pos is NOPOS, so should be the start and end positions 344 check("start == NOPOS", encl, self, self.start == NOPOS); 345 check("end == NOPOS", encl, self, self.end == NOPOS); 346 } else { 347 // For this node, start , pos, and endpos should be all defined 348 check("start != NOPOS", encl, self, self.start != NOPOS); 349 check("pos != NOPOS", encl, self, self.pos != NOPOS); 350 check("end != NOPOS", encl, self, self.end != NOPOS); 351 // The following should normally be ordered 352 // encl.start <= start <= pos <= end <= encl.end 353 // In addition, the position of the enclosing node should be 354 // within this node. 355 // The primary exceptions are for array type nodes, because of the 356 // need to support legacy syntax: 357 // e.g. int a[]; int[] b[]; int f()[] { return null; } 358 // and because of inconsistent nesting of left and right of 359 // array declarations: 360 // e.g. int[][] a = new int[2][]; 361 check("encl.start <= start", encl, self, encl.start <= self.start); 362 check("start <= pos", encl, self, self.start <= self.pos); 363 if (!(self.tag == TYPEARRAY 364 && (encl.tag == VARDEF || 365 encl.tag == METHODDEF || 366 encl.tag == TYPEARRAY))) { 367 check("encl.pos <= start || end <= encl.pos", 368 encl, self, encl.pos <= self.start || self.end <= encl.pos); 369 } 370 check("pos <= end", encl, self, self.pos <= self.end); 371 if (!(self.tag == TYPEARRAY && encl.tag == TYPEARRAY)) { 372 check("end <= encl.end", encl, self, self.end <= encl.end); 373 } 374 } 375 } 376 377 Info prevEncl = encl; 378 encl = self; 379 tree.accept(this); 380 encl = prevEncl; 381 } 382 383 @Override 384 public void visitVarDef(JCVariableDecl tree) { 385 // enum member declarations are desugared in the parser and have 386 // ill-defined semantics for tree positions, so for now, we 387 // skip the synthesized bits and just check parts which came from 388 // the original source text 389 if ((tree.mods.flags & Flags.ENUM) != 0) { 390 scan(tree.mods); 391 if (tree.init != null) { 392 if (tree.init.hasTag(NEWCLASS)) { 393 JCNewClass init = (JCNewClass) tree.init; 394 if (init.args != null && init.args.nonEmpty()) { 395 scan(init.args); 396 } 397 if (init.def != null && init.def.defs != null) { 398 scan(init.def.defs); 399 } 400 } 401 } 402 } else 403 super.visitVarDef(tree); 404 } 405 406 boolean check(Info encl, Info self) { 407 if (excludeTags.size() > 0) { 408 if (encl != null && excludeTags.contains(tagNames.get(encl.tag)) 409 || excludeTags.contains(tagNames.get(self.tag))) 410 return false; 411 } 412 return tags.size() == 0 || tags.contains(tagNames.get(self.tag)); 413 } 414 415 void check(String label, Info encl, Info self, boolean ok) { 416 if (!ok) { 417 if (gui) { 418 if (viewer == null) 419 viewer = new Viewer(); 420 viewer.addEntry(sourcefile, label, encl, self); 421 } 422 423 String s = self.tree.toString(); 424 String msg = sourcefile.getName() + ": " + label + ": " + 425 "encl:" + encl + " this:" + self + "\n" + 426 s.substring(0, Math.min(80, s.length())).replaceAll("[\r\n]+", " "); 427 error(msg); 428 } 429 } 430 431 JavaFileObject sourcefile; 432 Map<JCTree, Integer> endPosTable; 433 Info encl; 434 435 } 436 437 /** 438 * Utility class providing easy access to position and other info for a tree node. 439 */ 440 private class Info { 441 Info() { 442 tree = null; 443 tag = ERRONEOUS; 444 start = 0; 445 pos = 0; 446 end = Integer.MAX_VALUE; 447 } 448 449 Info(JCTree tree, Map<JCTree, Integer> endPosTable) { 450 this.tree = tree; 451 tag = tree.getTag(); 452 start = TreeInfo.getStartPos(tree); 453 pos = tree.pos; 454 end = TreeInfo.getEndPos(tree, endPosTable); 455 } 456 457 @Override 458 public String toString() { 459 return tagNames.get(tree.getTag()) + "[start:" + start + ",pos:" + pos + ",end:" + end + "]"; 460 } 461 462 final JCTree tree; 463 final JCTree.Tag tag; 464 final int start; 465 final int pos; 466 final int end; 467 } 468 469 /** 470 * Names for tree tags. 471 */ 472 private static class TagNames { 473 String get(JCTree.Tag tag) { 474 String name = tag.name(); 475 return (name == null) ? "??" : name; 476 } 477 } 478 479 /** 480 * Thrown when errors are found parsing a java file. 481 */ 482 private static class ParseException extends Exception { 483 ParseException(String msg) { 484 super(msg); 485 } 486 } 487 488 /** 489 * DiagnosticListener to report diagnostics and count any errors that occur. 490 */ 491 private static class Reporter implements DiagnosticListener<JavaFileObject> { 492 Reporter(PrintWriter out) { 493 this.out = out; 494 } 495 496 public void report(Diagnostic<? extends JavaFileObject> diagnostic) { 497 out.println(diagnostic); 498 switch (diagnostic.getKind()) { 499 case ERROR: 500 errors++; 501 } 502 } 503 int errors; 504 PrintWriter out; 505 } 506 507 /** 508 * GUI viewer for issues found by TreePosTester. The viewer provides a drop 509 * down list for selecting error conditions, a header area providing details 510 * about an error, and a text area with the ranges of text highlighted as 511 * appropriate. 512 */ 513 private class Viewer extends JFrame { 514 /** 515 * Create a viewer. 516 */ 517 Viewer() { 518 initGUI(); 519 } 520 521 /** 522 * Add another entry to the list of errors. 523 * @param file The file containing the error 524 * @param check The condition that was being tested, and which failed 525 * @param encl the enclosing tree node 526 * @param self the tree node containing the error 527 */ 528 void addEntry(JavaFileObject file, String check, Info encl, Info self) { 529 Entry e = new Entry(file, check, encl, self); 530 DefaultComboBoxModel m = (DefaultComboBoxModel) entries.getModel(); 531 m.addElement(e); 532 if (m.getSize() == 1) 533 entries.setSelectedItem(e); 534 } 535 536 /** 537 * Initialize the GUI window. 538 */ 539 private void initGUI() { 540 JPanel head = new JPanel(new GridBagLayout()); 541 GridBagConstraints lc = new GridBagConstraints(); 542 GridBagConstraints fc = new GridBagConstraints(); 543 fc.anchor = GridBagConstraints.WEST; 544 fc.fill = GridBagConstraints.HORIZONTAL; 545 fc.gridwidth = GridBagConstraints.REMAINDER; 546 547 entries = new JComboBox(); 548 entries.addActionListener(new ActionListener() { 549 public void actionPerformed(ActionEvent e) { 550 showEntry((Entry) entries.getSelectedItem()); 551 } 552 }); 553 fc.insets.bottom = 10; 554 head.add(entries, fc); 555 fc.insets.bottom = 0; 556 head.add(new JLabel("check:"), lc); 557 head.add(checkField = createTextField(80), fc); 558 fc.fill = GridBagConstraints.NONE; 559 head.add(setBackground(new JLabel("encl:"), enclColor), lc); 560 head.add(enclPanel = new InfoPanel(), fc); 561 head.add(setBackground(new JLabel("self:"), selfColor), lc); 562 head.add(selfPanel = new InfoPanel(), fc); 563 add(head, BorderLayout.NORTH); 564 565 body = new JTextArea(); 566 body.setFont(Font.decode(Font.MONOSPACED)); 567 body.addCaretListener(new CaretListener() { 568 public void caretUpdate(CaretEvent e) { 569 int dot = e.getDot(); 570 int mark = e.getMark(); 571 if (dot == mark) 572 statusText.setText("dot: " + dot); 573 else 574 statusText.setText("dot: " + dot + ", mark:" + mark); 575 } 576 }); 577 JScrollPane p = new JScrollPane(body, 578 JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, 579 JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); 580 p.setPreferredSize(new Dimension(640, 480)); 581 add(p, BorderLayout.CENTER); 582 583 statusText = createTextField(80); 584 add(statusText, BorderLayout.SOUTH); 585 586 pack(); 587 setLocationRelativeTo(null); // centered on screen 588 setVisible(true); 589 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 590 } 591 592 /** Show an entry that has been selected. */ 593 private void showEntry(Entry e) { 594 try { 595 // update simple fields 596 setTitle(e.file.getName()); 597 checkField.setText(e.check); 598 enclPanel.setInfo(e.encl); 599 selfPanel.setInfo(e.self); 600 // show file text with highlights 601 body.setText(e.file.getCharContent(true).toString()); 602 Highlighter highlighter = body.getHighlighter(); 603 highlighter.removeAllHighlights(); 604 addHighlight(highlighter, e.encl, enclColor); 605 addHighlight(highlighter, e.self, selfColor); 606 scroll(body, getMinPos(enclPanel.info, selfPanel.info)); 607 } catch (IOException ex) { 608 body.setText("Cannot read " + e.file.getName() + ": " + e); 609 } 610 } 611 612 /** Create a test field. */ 613 private JTextField createTextField(int width) { 614 JTextField f = new JTextField(width); 615 f.setEditable(false); 616 f.setBorder(null); 617 return f; 618 } 619 620 /** Add a highlighted region based on the positions in an Info object. */ 621 private void addHighlight(Highlighter h, Info info, Color c) { 622 int start = info.start; 623 int end = info.end; 624 if (start == -1 && end == -1) 625 return; 626 if (start == -1) 627 start = end; 628 if (end == -1) 629 end = start; 630 try { 631 h.addHighlight(info.start, info.end, 632 new DefaultHighlighter.DefaultHighlightPainter(c)); 633 if (info.pos != -1) { 634 Color c2 = new Color(c.getRed(), c.getGreen(), c.getBlue(), (int)(.4f * 255)); // 40% 635 h.addHighlight(info.pos, info.pos + 1, 636 new DefaultHighlighter.DefaultHighlightPainter(c2)); 637 } 638 } catch (BadLocationException e) { 639 e.printStackTrace(); 640 } 641 } 642 643 /** Get the minimum valid position in a set of info objects. */ 644 private int getMinPos(Info... values) { 645 int i = Integer.MAX_VALUE; 646 for (Info info: values) { 647 if (info.start >= 0) i = Math.min(i, info.start); 648 if (info.pos >= 0) i = Math.min(i, info.pos); 649 if (info.end >= 0) i = Math.min(i, info.end); 650 } 651 return (i == Integer.MAX_VALUE) ? 0 : i; 652 } 653 654 /** Set the background on a component. */ 655 private JComponent setBackground(JComponent comp, Color c) { 656 comp.setOpaque(true); 657 comp.setBackground(c); 658 return comp; 659 } 660 661 /** Scroll a text area to display a given position near the middle of the visible area. */ 662 private void scroll(final JTextArea t, final int pos) { 663 // Using invokeLater appears to give text a chance to sort itself out 664 // before the scroll happens; otherwise scrollRectToVisible doesn't work. 665 // Maybe there's a better way to sync with the text... 666 EventQueue.invokeLater(new Runnable() { 667 public void run() { 668 try { 669 Rectangle r = t.modelToView(pos); 670 JScrollPane p = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, t); 671 r.y = Math.max(0, r.y - p.getHeight() * 2 / 5); 672 r.height += p.getHeight() * 4 / 5; 673 t.scrollRectToVisible(r); 674 } catch (BadLocationException ignore) { 675 } 676 } 677 }); 678 } 679 680 private JComboBox entries; 681 private JTextField checkField; 682 private InfoPanel enclPanel; 683 private InfoPanel selfPanel; 684 private JTextArea body; 685 private JTextField statusText; 686 687 private Color selfColor = new Color(0.f, 1.f, 0.f, 0.2f); // 20% green 688 private Color enclColor = new Color(1.f, 0.f, 0.f, 0.2f); // 20% red 689 690 /** Panel to display an Info object. */ 691 private class InfoPanel extends JPanel { 692 InfoPanel() { 693 add(tagName = createTextField(20)); 694 add(new JLabel("start:")); 695 add(addListener(start = createTextField(6))); 696 add(new JLabel("pos:")); 697 add(addListener(pos = createTextField(6))); 698 add(new JLabel("end:")); 699 add(addListener(end = createTextField(6))); 700 } 701 702 void setInfo(Info info) { 703 this.info = info; 704 tagName.setText(tagNames.get(info.tag)); 705 start.setText(String.valueOf(info.start)); 706 pos.setText(String.valueOf(info.pos)); 707 end.setText(String.valueOf(info.end)); 708 } 709 710 JTextField addListener(final JTextField f) { 711 f.addMouseListener(new MouseAdapter() { 712 @Override 713 public void mouseClicked(MouseEvent e) { 714 body.setCaretPosition(Integer.valueOf(f.getText())); 715 body.getCaret().setVisible(true); 716 } 717 }); 718 return f; 719 } 720 721 Info info; 722 JTextField tagName; 723 JTextField start; 724 JTextField pos; 725 JTextField end; 726 } 727 728 /** Object to record information about an error to be displayed. */ 729 private class Entry { 730 Entry(JavaFileObject file, String check, Info encl, Info self) { 731 this.file = file; 732 this.check = check; 733 this.encl = encl; 734 this.self= self; 735 } 736 737 @Override 738 public String toString() { 739 return file.getName() + " " + check + " " + getMinPos(encl, self); 740 } 741 742 final JavaFileObject file; 743 final String check; 744 final Info encl; 745 final Info self; 746 } 747 } 748 } 749