1.1 --- a/test/tools/javac/treepostests/TreePosTest.java Thu Mar 04 13:50:33 2010 -0800
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,762 +0,0 @@
1.4 -/*
1.5 - * Copyright 2010 Sun Microsystems, Inc. All Rights Reserved.
1.6 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 - *
1.8 - * This code is free software; you can redistribute it and/or modify it
1.9 - * under the terms of the GNU General Public License version 2 only, as
1.10 - * published by the Free Software Foundation.
1.11 - *
1.12 - * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 - * version 2 for more details (a copy is included in the LICENSE file that
1.16 - * accompanied this code).
1.17 - *
1.18 - * You should have received a copy of the GNU General Public License version
1.19 - * 2 along with this work; if not, write to the Free Software Foundation,
1.20 - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 - *
1.22 - * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 - * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 - * have any questions.
1.25 - */
1.26 -
1.27 -import java.awt.BorderLayout;
1.28 -import java.awt.Color;
1.29 -import java.awt.Dimension;
1.30 -import java.awt.EventQueue;
1.31 -import java.awt.Font;
1.32 -import java.awt.GridBagConstraints;
1.33 -import java.awt.GridBagLayout;
1.34 -import java.awt.Rectangle;
1.35 -import java.awt.event.ActionEvent;
1.36 -import java.awt.event.ActionListener;
1.37 -import java.awt.event.MouseAdapter;
1.38 -import java.awt.event.MouseEvent;
1.39 -import java.io.File;
1.40 -import java.io.IOException;
1.41 -import java.io.PrintStream;
1.42 -import java.io.PrintWriter;
1.43 -import java.io.StringWriter;
1.44 -import java.lang.reflect.Field;
1.45 -import java.lang.reflect.Modifier;
1.46 -import java.nio.charset.Charset;
1.47 -import java.util.ArrayList;
1.48 -import java.util.Collections;
1.49 -import java.util.HashMap;
1.50 -import java.util.HashSet;
1.51 -import java.util.Iterator;
1.52 -import java.util.List;
1.53 -import java.util.Map;
1.54 -import java.util.Set;
1.55 -import javax.swing.DefaultComboBoxModel;
1.56 -import javax.swing.JComboBox;
1.57 -import javax.swing.JComponent;
1.58 -import javax.swing.JFrame;
1.59 -import javax.swing.JLabel;
1.60 -import javax.swing.JPanel;
1.61 -import javax.swing.JScrollPane;
1.62 -import javax.swing.JTextArea;
1.63 -import javax.swing.JTextField;
1.64 -import javax.swing.SwingUtilities;
1.65 -import javax.swing.event.CaretEvent;
1.66 -import javax.swing.event.CaretListener;
1.67 -import javax.swing.text.BadLocationException;
1.68 -import javax.swing.text.DefaultHighlighter;
1.69 -import javax.swing.text.Highlighter;
1.70 -import javax.tools.Diagnostic;
1.71 -import javax.tools.DiagnosticListener;
1.72 -import javax.tools.JavaFileObject;
1.73 -import javax.tools.StandardJavaFileManager;
1.74 -
1.75 -import com.sun.source.tree.CompilationUnitTree;
1.76 -import com.sun.source.util.JavacTask;
1.77 -import com.sun.tools.javac.api.JavacTool;
1.78 -import com.sun.tools.javac.code.Flags;
1.79 -import com.sun.tools.javac.tree.JCTree;
1.80 -import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
1.81 -import com.sun.tools.javac.tree.JCTree.JCNewClass;
1.82 -import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
1.83 -import com.sun.tools.javac.tree.TreeInfo;
1.84 -import com.sun.tools.javac.tree.TreeScanner;
1.85 -
1.86 -import static com.sun.tools.javac.util.Position.NOPOS;
1.87 -
1.88 -/**
1.89 - * Utility and test program to check validity of tree positions for tree nodes.
1.90 - * The program can be run standalone, or as a jtreg test. In standalone mode,
1.91 - * errors can be displayed in a gui viewer. For info on command line args,
1.92 - * run program with no args.
1.93 - *
1.94 - * <p>
1.95 - * jtreg: Note that by using the -r switch in the test description below, this test
1.96 - * will process all java files in the langtools/test directory, thus implicitly
1.97 - * covering any new language features that may be tested in this test suite.
1.98 - */
1.99 -
1.100 -/*
1.101 - * @test
1.102 - * @bug 6919889
1.103 - * @summary assorted position errors in compiler syntax trees
1.104 - * @run main TreePosTest -q -r -ef ./tools/javac/typeAnnotations -ef ./tools/javap/typeAnnotations -et ANNOTATED_TYPE .
1.105 - */
1.106 -public class TreePosTest {
1.107 - /**
1.108 - * Main entry point.
1.109 - * If test.src is set, program runs in jtreg mode, and will throw an Error
1.110 - * if any errors arise, otherwise System.exit will be used, unless the gui
1.111 - * viewer is being used. In jtreg mode, the default base directory for file
1.112 - * args is the value of ${test.src}. In jtreg mode, the -r option can be
1.113 - * given to change the default base directory to the root test directory.
1.114 - */
1.115 - public static void main(String... args) {
1.116 - String testSrc = System.getProperty("test.src");
1.117 - File baseDir = (testSrc == null) ? null : new File(testSrc);
1.118 - boolean ok = new TreePosTest().run(baseDir, args);
1.119 - if (!ok) {
1.120 - if (testSrc != null) // jtreg mode
1.121 - throw new Error("failed");
1.122 - else
1.123 - System.exit(1);
1.124 - }
1.125 - }
1.126 -
1.127 - /**
1.128 - * Run the program. A base directory can be provided for file arguments.
1.129 - * In jtreg mode, the -r option can be given to change the default base
1.130 - * directory to the test root directory. For other options, see usage().
1.131 - * @param baseDir base directory for any file arguments.
1.132 - * @param args command line args
1.133 - * @return true if successful or in gui mode
1.134 - */
1.135 - boolean run(File baseDir, String... args) {
1.136 - if (args.length == 0) {
1.137 - usage(System.out);
1.138 - return true;
1.139 - }
1.140 -
1.141 - List<File> files = new ArrayList<File>();
1.142 - for (int i = 0; i < args.length; i++) {
1.143 - String arg = args[i];
1.144 - if (arg.equals("-encoding") && i + 1 < args.length)
1.145 - encoding = args[++i];
1.146 - else if (arg.equals("-gui"))
1.147 - gui = true;
1.148 - else if (arg.equals("-q"))
1.149 - quiet = true;
1.150 - else if (arg.equals("-v"))
1.151 - verbose = true;
1.152 - else if (arg.equals("-t") && i + 1 < args.length)
1.153 - tags.add(args[++i]);
1.154 - else if (arg.equals("-ef") && i + 1 < args.length)
1.155 - excludeFiles.add(new File(baseDir, args[++i]));
1.156 - else if (arg.equals("-et") && i + 1 < args.length)
1.157 - excludeTags.add(args[++i]);
1.158 - else if (arg.equals("-r")) {
1.159 - if (excludeFiles.size() > 0)
1.160 - throw new Error("-r must be used before -ef");
1.161 - File d = baseDir;
1.162 - while (!new File(d, "TEST.ROOT").exists()) {
1.163 - d = d.getParentFile();
1.164 - if (d == null)
1.165 - throw new Error("cannot find TEST.ROOT");
1.166 - }
1.167 - baseDir = d;
1.168 - }
1.169 - else if (arg.startsWith("-"))
1.170 - throw new Error("unknown option: " + arg);
1.171 - else {
1.172 - while (i < args.length)
1.173 - files.add(new File(baseDir, args[i++]));
1.174 - }
1.175 - }
1.176 -
1.177 - for (File file: files) {
1.178 - if (file.exists())
1.179 - test(file);
1.180 - else
1.181 - error("File not found: " + file);
1.182 - }
1.183 -
1.184 - if (fileCount != 1)
1.185 - System.err.println(fileCount + " files read");
1.186 - if (errors > 0)
1.187 - System.err.println(errors + " errors");
1.188 -
1.189 - return (gui || errors == 0);
1.190 - }
1.191 -
1.192 - /**
1.193 - * Print command line help.
1.194 - * @param out output stream
1.195 - */
1.196 - void usage(PrintStream out) {
1.197 - out.println("Usage:");
1.198 - out.println(" java TreePosTest options... files...");
1.199 - out.println("");
1.200 - out.println("where options include:");
1.201 - out.println("-gui Display returns in a GUI viewer");
1.202 - out.println("-q Quiet: don't report on inapplicable files");
1.203 - out.println("-v Verbose: report on files as they are being read");
1.204 - out.println("-t tag Limit checks to tree nodes with this tag");
1.205 - out.println(" Can be repeated if desired");
1.206 - out.println("-ef file Exclude file or directory");
1.207 - out.println("-et tag Exclude tree nodes with given tag name");
1.208 - out.println("");
1.209 - out.println("files may be directories or files");
1.210 - out.println("directories will be scanned recursively");
1.211 - out.println("non java files, or java files which cannot be parsed, will be ignored");
1.212 - out.println("");
1.213 - }
1.214 -
1.215 - /**
1.216 - * Test a file. If the file is a directory, it will be recursively scanned
1.217 - * for java files.
1.218 - * @param file the file or directory to test
1.219 - */
1.220 - void test(File file) {
1.221 - if (excludeFiles.contains(file)) {
1.222 - if (!quiet)
1.223 - error("File " + file + " excluded");
1.224 - return;
1.225 - }
1.226 -
1.227 - if (file.isDirectory()) {
1.228 - for (File f: file.listFiles()) {
1.229 - test(f);
1.230 - }
1.231 - return;
1.232 - }
1.233 -
1.234 - if (file.isFile() && file.getName().endsWith(".java")) {
1.235 - try {
1.236 - if (verbose)
1.237 - System.err.println(file);
1.238 - fileCount++;
1.239 - PosTester p = new PosTester();
1.240 - p.test(read(file));
1.241 - } catch (ParseException e) {
1.242 - if (!quiet) {
1.243 - error("Error parsing " + file + "\n" + e.getMessage());
1.244 - }
1.245 - } catch (IOException e) {
1.246 - error("Error reading " + file + ": " + e);
1.247 - }
1.248 - return;
1.249 - }
1.250 -
1.251 - if (!quiet)
1.252 - error("File " + file + " ignored");
1.253 - }
1.254 -
1.255 - /**
1.256 - * Read a file.
1.257 - * @param file the file to be read
1.258 - * @return the tree for the content of the file
1.259 - * @throws IOException if any IO errors occur
1.260 - * @throws TreePosTest.ParseException if any errors occur while parsing the file
1.261 - */
1.262 - JCCompilationUnit read(File file) throws IOException, ParseException {
1.263 - StringWriter sw = new StringWriter();
1.264 - PrintWriter pw = new PrintWriter(sw);
1.265 - Reporter r = new Reporter(pw);
1.266 - JavacTool tool = JavacTool.create();
1.267 - Charset cs = (encoding == null ? null : Charset.forName(encoding));
1.268 - StandardJavaFileManager fm = tool.getStandardFileManager(r, null, null);
1.269 - Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(file);
1.270 - JavacTask task = tool.getTask(pw, fm, r, Collections.<String>emptyList(), null, files);
1.271 - Iterable<? extends CompilationUnitTree> trees = task.parse();
1.272 - pw.flush();
1.273 - if (r.errors > 0)
1.274 - throw new ParseException(sw.toString());
1.275 - Iterator<? extends CompilationUnitTree> iter = trees.iterator();
1.276 - if (!iter.hasNext())
1.277 - throw new Error("no trees found");
1.278 - JCCompilationUnit t = (JCCompilationUnit) iter.next();
1.279 - if (iter.hasNext())
1.280 - throw new Error("too many trees found");
1.281 - return t;
1.282 - }
1.283 -
1.284 - /**
1.285 - * Report an error. When the program is complete, the program will either
1.286 - * exit or throw an Error if any errors have been reported.
1.287 - * @param msg the error message
1.288 - */
1.289 - void error(String msg) {
1.290 - System.err.println(msg);
1.291 - errors++;
1.292 - }
1.293 -
1.294 - /** Number of files that have been analyzed. */
1.295 - int fileCount;
1.296 - /** Number of errors reported. */
1.297 - int errors;
1.298 - /** Flag: don't report irrelevant files. */
1.299 - boolean quiet;
1.300 - /** Flag: report files as they are processed. */
1.301 - boolean verbose;
1.302 - /** Flag: show errors in GUI viewer. */
1.303 - boolean gui;
1.304 - /** Option: encoding for test files. */
1.305 - String encoding;
1.306 - /** The GUI viewer for errors. */
1.307 - Viewer viewer;
1.308 - /** The set of tags for tree nodes to be analyzed; if empty, all tree nodes
1.309 - * are analyzed. */
1.310 - Set<String> tags = new HashSet<String>();
1.311 - /** Set of files and directories to be excluded from analysis. */
1.312 - Set<File> excludeFiles = new HashSet<File>();
1.313 - /** Set of tag names to be excluded from analysis. */
1.314 - Set<String> excludeTags = new HashSet<String>();
1.315 - /** Table of printable names for tree tag values. */
1.316 - TagNames tagNames = new TagNames();
1.317 -
1.318 - /**
1.319 - * Main class for testing assertions concerning tree positions for tree nodes.
1.320 - */
1.321 - private class PosTester extends TreeScanner {
1.322 - void test(JCCompilationUnit tree) {
1.323 - sourcefile = tree.sourcefile;
1.324 - endPosTable = tree.endPositions;
1.325 - encl = new Info();
1.326 - tree.accept(this);
1.327 - }
1.328 -
1.329 - @Override
1.330 - public void scan(JCTree tree) {
1.331 - if (tree == null)
1.332 - return;
1.333 -
1.334 - Info self = new Info(tree, endPosTable);
1.335 - if (check(encl, self)) {
1.336 - // Modifiers nodes are present throughout the tree even where
1.337 - // there is no corresponding source text.
1.338 - // Redundant semicolons in a class definition can cause empty
1.339 - // initializer blocks with no positions.
1.340 - if ((self.tag == JCTree.MODIFIERS || self.tag == JCTree.BLOCK)
1.341 - && self.pos == NOPOS) {
1.342 - // If pos is NOPOS, so should be the start and end positions
1.343 - check("start == NOPOS", encl, self, self.start == NOPOS);
1.344 - check("end == NOPOS", encl, self, self.end == NOPOS);
1.345 - } else {
1.346 - // For this node, start , pos, and endpos should be all defined
1.347 - check("start != NOPOS", encl, self, self.start != NOPOS);
1.348 - check("pos != NOPOS", encl, self, self.pos != NOPOS);
1.349 - check("end != NOPOS", encl, self, self.end != NOPOS);
1.350 - // The following should normally be ordered
1.351 - // encl.start <= start <= pos <= end <= encl.end
1.352 - // In addition, the position of the enclosing node should be
1.353 - // within this node.
1.354 - // The primary exceptions are for array type nodes, because of the
1.355 - // need to support legacy syntax:
1.356 - // e.g. int a[]; int[] b[]; int f()[] { return null; }
1.357 - // and because of inconsistent nesting of left and right of
1.358 - // array declarations:
1.359 - // e.g. int[][] a = new int[2][];
1.360 - check("encl.start <= start", encl, self, encl.start <= self.start);
1.361 - check("start <= pos", encl, self, self.start <= self.pos);
1.362 - if (!(self.tag == JCTree.TYPEARRAY
1.363 - && (encl.tag == JCTree.VARDEF || encl.tag == JCTree.TYPEARRAY))) {
1.364 - check("encl.pos <= start || end <= encl.pos",
1.365 - encl, self, encl.pos <= self.start || self.end <= encl.pos);
1.366 - }
1.367 - check("pos <= end", encl, self, self.pos <= self.end);
1.368 - if (!(self.tag == JCTree.TYPEARRAY && encl.tag == JCTree.TYPEARRAY)) {
1.369 - check("end <= encl.end", encl, self, self.end <= encl.end);
1.370 - }
1.371 - }
1.372 - }
1.373 -
1.374 - Info prevEncl = encl;
1.375 - encl = self;
1.376 - tree.accept(this);
1.377 - encl = prevEncl;
1.378 - }
1.379 -
1.380 - @Override
1.381 - public void visitVarDef(JCVariableDecl tree) {
1.382 - // enum member declarations are desugared in the parser and have
1.383 - // ill-defined semantics for tree positions, so for now, we
1.384 - // skip the synthesized bits and just check parts which came from
1.385 - // the original source text
1.386 - if ((tree.mods.flags & Flags.ENUM) != 0) {
1.387 - scan(tree.mods);
1.388 - if (tree.init != null) {
1.389 - if (tree.init.getTag() == JCTree.NEWCLASS) {
1.390 - JCNewClass init = (JCNewClass) tree.init;
1.391 - if (init.args != null && init.args.nonEmpty()) {
1.392 - scan(init.args);
1.393 - }
1.394 - if (init.def != null && init.def.defs != null) {
1.395 - scan(init.def.defs);
1.396 - }
1.397 - }
1.398 - }
1.399 - } else
1.400 - super.visitVarDef(tree);
1.401 - }
1.402 -
1.403 - boolean check(Info encl, Info self) {
1.404 - if (excludeTags.size() > 0) {
1.405 - if (encl != null && excludeTags.contains(tagNames.get(encl.tag))
1.406 - || excludeTags.contains(tagNames.get(self.tag)))
1.407 - return false;
1.408 - }
1.409 - return tags.size() == 0 || tags.contains(tagNames.get(self.tag));
1.410 - }
1.411 -
1.412 - void check(String label, Info encl, Info self, boolean ok) {
1.413 - if (!ok) {
1.414 - if (gui) {
1.415 - if (viewer == null)
1.416 - viewer = new Viewer();
1.417 - viewer.addEntry(sourcefile, label, encl, self);
1.418 - }
1.419 -
1.420 - String s = self.tree.toString();
1.421 - String msg = sourcefile.getName() + ": " + label + ": " +
1.422 - "encl:" + encl + " this:" + self + "\n" +
1.423 - s.substring(0, Math.min(80, s.length())).replaceAll("[\r\n]+", " ");
1.424 - error(msg);
1.425 - }
1.426 - }
1.427 -
1.428 - JavaFileObject sourcefile;
1.429 - Map<JCTree, Integer> endPosTable;
1.430 - Info encl;
1.431 -
1.432 - }
1.433 -
1.434 - /**
1.435 - * Utility class providing easy access to position and other info for a tree node.
1.436 - */
1.437 - private class Info {
1.438 - Info() {
1.439 - tree = null;
1.440 - tag = JCTree.ERRONEOUS;
1.441 - start = 0;
1.442 - pos = 0;
1.443 - end = Integer.MAX_VALUE;
1.444 - }
1.445 -
1.446 - Info(JCTree tree, Map<JCTree, Integer> endPosTable) {
1.447 - this.tree = tree;
1.448 - tag = tree.getTag();
1.449 - start = TreeInfo.getStartPos(tree);
1.450 - pos = tree.pos;
1.451 - end = TreeInfo.getEndPos(tree, endPosTable);
1.452 - }
1.453 -
1.454 - @Override
1.455 - public String toString() {
1.456 - return tagNames.get(tree.getTag()) + "[start:" + start + ",pos:" + pos + ",end:" + end + "]";
1.457 - }
1.458 -
1.459 - final JCTree tree;
1.460 - final int tag;
1.461 - final int start;
1.462 - final int pos;
1.463 - final int end;
1.464 - }
1.465 -
1.466 - /**
1.467 - * Names for tree tags.
1.468 - * javac does not provide an API to convert tag values to strings, so this class uses
1.469 - * reflection to determine names of public static final int values in JCTree.
1.470 - */
1.471 - private static class TagNames {
1.472 - String get(int tag) {
1.473 - if (map == null) {
1.474 - map = new HashMap<Integer, String>();
1.475 - Class c = JCTree.class;
1.476 - for (Field f : c.getDeclaredFields()) {
1.477 - if (f.getType().equals(int.class)) {
1.478 - int mods = f.getModifiers();
1.479 - if (Modifier.isPublic(mods) && Modifier.isStatic(mods) && Modifier.isFinal(mods)) {
1.480 - try {
1.481 - map.put(f.getInt(null), f.getName());
1.482 - } catch (IllegalAccessException e) {
1.483 - }
1.484 - }
1.485 - }
1.486 - }
1.487 - }
1.488 - String name = map.get(tag);
1.489 - return (name == null) ? "??" : name;
1.490 - }
1.491 -
1.492 - private Map<Integer, String> map;
1.493 - }
1.494 -
1.495 - /**
1.496 - * Thrown when errors are found parsing a java file.
1.497 - */
1.498 - private static class ParseException extends Exception {
1.499 - ParseException(String msg) {
1.500 - super(msg);
1.501 - }
1.502 - }
1.503 -
1.504 - /**
1.505 - * DiagnosticListener to report diagnostics and count any errors that occur.
1.506 - */
1.507 - private static class Reporter implements DiagnosticListener<JavaFileObject> {
1.508 - Reporter(PrintWriter out) {
1.509 - this.out = out;
1.510 - }
1.511 -
1.512 - public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
1.513 - out.println(diagnostic);
1.514 - switch (diagnostic.getKind()) {
1.515 - case ERROR:
1.516 - errors++;
1.517 - }
1.518 - }
1.519 - int errors;
1.520 - PrintWriter out;
1.521 - }
1.522 -
1.523 - /**
1.524 - * GUI viewer for issues found by TreePosTester. The viewer provides a drop
1.525 - * down list for selecting error conditions, a header area providing details
1.526 - * about an error, and a text area with the ranges of text highlighted as
1.527 - * appropriate.
1.528 - */
1.529 - private class Viewer extends JFrame {
1.530 - /**
1.531 - * Create a viewer.
1.532 - */
1.533 - Viewer() {
1.534 - initGUI();
1.535 - }
1.536 -
1.537 - /**
1.538 - * Add another entry to the list of errors.
1.539 - * @param file The file containing the error
1.540 - * @param check The condition that was being tested, and which failed
1.541 - * @param encl the enclosing tree node
1.542 - * @param self the tree node containing the error
1.543 - */
1.544 - void addEntry(JavaFileObject file, String check, Info encl, Info self) {
1.545 - Entry e = new Entry(file, check, encl, self);
1.546 - DefaultComboBoxModel m = (DefaultComboBoxModel) entries.getModel();
1.547 - m.addElement(e);
1.548 - if (m.getSize() == 1)
1.549 - entries.setSelectedItem(e);
1.550 - }
1.551 -
1.552 - /**
1.553 - * Initialize the GUI window.
1.554 - */
1.555 - private void initGUI() {
1.556 - JPanel head = new JPanel(new GridBagLayout());
1.557 - GridBagConstraints lc = new GridBagConstraints();
1.558 - GridBagConstraints fc = new GridBagConstraints();
1.559 - fc.anchor = GridBagConstraints.WEST;
1.560 - fc.fill = GridBagConstraints.HORIZONTAL;
1.561 - fc.gridwidth = GridBagConstraints.REMAINDER;
1.562 -
1.563 - entries = new JComboBox();
1.564 - entries.addActionListener(new ActionListener() {
1.565 - public void actionPerformed(ActionEvent e) {
1.566 - showEntry((Entry) entries.getSelectedItem());
1.567 - }
1.568 - });
1.569 - fc.insets.bottom = 10;
1.570 - head.add(entries, fc);
1.571 - fc.insets.bottom = 0;
1.572 - head.add(new JLabel("check:"), lc);
1.573 - head.add(checkField = createTextField(80), fc);
1.574 - fc.fill = GridBagConstraints.NONE;
1.575 - head.add(setBackground(new JLabel("encl:"), enclColor), lc);
1.576 - head.add(enclPanel = new InfoPanel(), fc);
1.577 - head.add(setBackground(new JLabel("self:"), selfColor), lc);
1.578 - head.add(selfPanel = new InfoPanel(), fc);
1.579 - add(head, BorderLayout.NORTH);
1.580 -
1.581 - body = new JTextArea();
1.582 - body.setFont(Font.decode(Font.MONOSPACED));
1.583 - body.addCaretListener(new CaretListener() {
1.584 - public void caretUpdate(CaretEvent e) {
1.585 - int dot = e.getDot();
1.586 - int mark = e.getMark();
1.587 - if (dot == mark)
1.588 - statusText.setText("dot: " + dot);
1.589 - else
1.590 - statusText.setText("dot: " + dot + ", mark:" + mark);
1.591 - }
1.592 - });
1.593 - JScrollPane p = new JScrollPane(body,
1.594 - JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
1.595 - JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
1.596 - p.setPreferredSize(new Dimension(640, 480));
1.597 - add(p, BorderLayout.CENTER);
1.598 -
1.599 - statusText = createTextField(80);
1.600 - add(statusText, BorderLayout.SOUTH);
1.601 -
1.602 - pack();
1.603 - setLocationRelativeTo(null); // centered on screen
1.604 - setVisible(true);
1.605 - setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
1.606 - }
1.607 -
1.608 - /** Show an entry that has been selected. */
1.609 - private void showEntry(Entry e) {
1.610 - try {
1.611 - // update simple fields
1.612 - setTitle(e.file.getName());
1.613 - checkField.setText(e.check);
1.614 - enclPanel.setInfo(e.encl);
1.615 - selfPanel.setInfo(e.self);
1.616 - // show file text with highlights
1.617 - body.setText(e.file.getCharContent(true).toString());
1.618 - Highlighter highlighter = body.getHighlighter();
1.619 - highlighter.removeAllHighlights();
1.620 - addHighlight(highlighter, e.encl, enclColor);
1.621 - addHighlight(highlighter, e.self, selfColor);
1.622 - scroll(body, getMinPos(enclPanel.info, selfPanel.info));
1.623 - } catch (IOException ex) {
1.624 - body.setText("Cannot read " + e.file.getName() + ": " + e);
1.625 - }
1.626 - }
1.627 -
1.628 - /** Create a test field. */
1.629 - private JTextField createTextField(int width) {
1.630 - JTextField f = new JTextField(width);
1.631 - f.setEditable(false);
1.632 - f.setBorder(null);
1.633 - return f;
1.634 - }
1.635 -
1.636 - /** Add a highlighted region based on the positions in an Info object. */
1.637 - private void addHighlight(Highlighter h, Info info, Color c) {
1.638 - int start = info.start;
1.639 - int end = info.end;
1.640 - if (start == -1 && end == -1)
1.641 - return;
1.642 - if (start == -1)
1.643 - start = end;
1.644 - if (end == -1)
1.645 - end = start;
1.646 - try {
1.647 - h.addHighlight(info.start, info.end,
1.648 - new DefaultHighlighter.DefaultHighlightPainter(c));
1.649 - if (info.pos != -1) {
1.650 - Color c2 = new Color(c.getRed(), c.getGreen(), c.getBlue(), (int)(.4f * 255)); // 40%
1.651 - h.addHighlight(info.pos, info.pos + 1,
1.652 - new DefaultHighlighter.DefaultHighlightPainter(c2));
1.653 - }
1.654 - } catch (BadLocationException e) {
1.655 - e.printStackTrace();
1.656 - }
1.657 - }
1.658 -
1.659 - /** Get the minimum valid position in a set of info objects. */
1.660 - private int getMinPos(Info... values) {
1.661 - int i = Integer.MAX_VALUE;
1.662 - for (Info info: values) {
1.663 - if (info.start >= 0) i = Math.min(i, info.start);
1.664 - if (info.pos >= 0) i = Math.min(i, info.pos);
1.665 - if (info.end >= 0) i = Math.min(i, info.end);
1.666 - }
1.667 - return (i == Integer.MAX_VALUE) ? 0 : i;
1.668 - }
1.669 -
1.670 - /** Set the background on a component. */
1.671 - private JComponent setBackground(JComponent comp, Color c) {
1.672 - comp.setOpaque(true);
1.673 - comp.setBackground(c);
1.674 - return comp;
1.675 - }
1.676 -
1.677 - /** Scroll a text area to display a given position near the middle of the visible area. */
1.678 - private void scroll(final JTextArea t, final int pos) {
1.679 - // Using invokeLater appears to give text a chance to sort itself out
1.680 - // before the scroll happens; otherwise scrollRectToVisible doesn't work.
1.681 - // Maybe there's a better way to sync with the text...
1.682 - EventQueue.invokeLater(new Runnable() {
1.683 - public void run() {
1.684 - try {
1.685 - Rectangle r = t.modelToView(pos);
1.686 - JScrollPane p = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, t);
1.687 - r.y = Math.max(0, r.y - p.getHeight() * 2 / 5);
1.688 - r.height += p.getHeight() * 4 / 5;
1.689 - t.scrollRectToVisible(r);
1.690 - } catch (BadLocationException ignore) {
1.691 - }
1.692 - }
1.693 - });
1.694 - }
1.695 -
1.696 - private JComboBox entries;
1.697 - private JTextField checkField;
1.698 - private InfoPanel enclPanel;
1.699 - private InfoPanel selfPanel;
1.700 - private JTextArea body;
1.701 - private JTextField statusText;
1.702 -
1.703 - private Color selfColor = new Color(0.f, 1.f, 0.f, 0.2f); // 20% green
1.704 - private Color enclColor = new Color(1.f, 0.f, 0.f, 0.2f); // 20% red
1.705 -
1.706 - /** Panel to display an Info object. */
1.707 - private class InfoPanel extends JPanel {
1.708 - InfoPanel() {
1.709 - add(tagName = createTextField(20));
1.710 - add(new JLabel("start:"));
1.711 - add(addListener(start = createTextField(6)));
1.712 - add(new JLabel("pos:"));
1.713 - add(addListener(pos = createTextField(6)));
1.714 - add(new JLabel("end:"));
1.715 - add(addListener(end = createTextField(6)));
1.716 - }
1.717 -
1.718 - void setInfo(Info info) {
1.719 - this.info = info;
1.720 - tagName.setText(tagNames.get(info.tag));
1.721 - start.setText(String.valueOf(info.start));
1.722 - pos.setText(String.valueOf(info.pos));
1.723 - end.setText(String.valueOf(info.end));
1.724 - }
1.725 -
1.726 - JTextField addListener(final JTextField f) {
1.727 - f.addMouseListener(new MouseAdapter() {
1.728 - @Override
1.729 - public void mouseClicked(MouseEvent e) {
1.730 - body.setCaretPosition(Integer.valueOf(f.getText()));
1.731 - body.getCaret().setVisible(true);
1.732 - }
1.733 - });
1.734 - return f;
1.735 - }
1.736 -
1.737 - Info info;
1.738 - JTextField tagName;
1.739 - JTextField start;
1.740 - JTextField pos;
1.741 - JTextField end;
1.742 - }
1.743 -
1.744 - /** Object to record information about an error to be displayed. */
1.745 - private class Entry {
1.746 - Entry(JavaFileObject file, String check, Info encl, Info self) {
1.747 - this.file = file;
1.748 - this.check = check;
1.749 - this.encl = encl;
1.750 - this.self= self;
1.751 - }
1.752 -
1.753 - @Override
1.754 - public String toString() {
1.755 - return file.getName() + " " + check + " " + getMinPos(encl, self);
1.756 - }
1.757 -
1.758 - final JavaFileObject file;
1.759 - final String check;
1.760 - final Info encl;
1.761 - final Info self;
1.762 - }
1.763 - }
1.764 -}
1.765 -
