jdk8-mips64-public/langtools: test/tools/javac/failover/CheckAttributedTree.java@71f35e4b93a5

8006775: JSR 308: Compiler changes in JDK8
Reviewed-by: jjg
Contributed-by: mernst@cs.washington.edu, wmdietl@cs.washington.edu, mpapi@csail.mit.edu, mahmood@notnoop.com

     1 /*

     2  * Copyright (c) 2010, 2013, 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  */

    24 /*

    25  * @test

    26  * @bug 6970584 8006694

    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  * @build JavacTestingAbstractThreadedTest

    31  * @run main/othervm CheckAttributedTree -q -r -et ERRONEOUS .

    32  */

    34 // use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047)

    35 // see JDK-8006746

    37 import java.awt.BorderLayout;

    38 import java.awt.Color;

    39 import java.awt.Dimension;

    40 import java.awt.EventQueue;

    41 import java.awt.Font;

    42 import java.awt.GridBagConstraints;

    43 import java.awt.GridBagLayout;

    44 import java.awt.Rectangle;

    45 import java.awt.event.ActionEvent;

    46 import java.awt.event.ActionListener;

    47 import java.awt.event.MouseAdapter;

    48 import java.awt.event.MouseEvent;

    49 import java.io.File;

    50 import java.io.IOException;

    51 import java.io.PrintStream;

    52 import java.io.PrintWriter;

    53 import java.io.StringWriter;

    54 import java.lang.reflect.Field;

    55 import java.util.ArrayList;

    56 import java.util.Arrays;

    57 import java.util.concurrent.atomic.AtomicInteger;

    58 import java.util.HashSet;

    59 import java.util.List;

    60 import java.util.Set;

    62 import javax.lang.model.element.Element;

    63 import javax.swing.DefaultComboBoxModel;

    64 import javax.swing.JComboBox;

    65 import javax.swing.JComponent;

    66 import javax.swing.JFrame;

    67 import javax.swing.JLabel;

    68 import javax.swing.JPanel;

    69 import javax.swing.JScrollPane;

    70 import javax.swing.JTextArea;

    71 import javax.swing.JTextField;

    72 import javax.swing.SwingUtilities;

    73 import javax.swing.event.CaretEvent;

    74 import javax.swing.event.CaretListener;

    75 import javax.swing.text.BadLocationException;

    76 import javax.swing.text.DefaultHighlighter;

    77 import javax.swing.text.Highlighter;

    78 import javax.tools.Diagnostic;

    79 import javax.tools.DiagnosticListener;

    80 import javax.tools.JavaFileObject;

    82 import com.sun.source.tree.CompilationUnitTree;

    83 import com.sun.source.util.TaskEvent;

    84 import com.sun.source.util.JavacTask;

    85 import com.sun.source.util.TaskListener;

    86 import com.sun.tools.javac.code.Symbol;

    87 import com.sun.tools.javac.code.Type;

    88 import com.sun.tools.javac.tree.EndPosTable;

    89 import com.sun.tools.javac.tree.JCTree;

    90 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;

    91 import com.sun.tools.javac.tree.JCTree.JCImport;

    92 import com.sun.tools.javac.tree.TreeInfo;

    93 import com.sun.tools.javac.tree.TreeScanner;

    94 import com.sun.tools.javac.util.Pair;

    96 import static com.sun.tools.javac.tree.JCTree.Tag.*;

    98 /**

    99  * Utility and test program to check validity of tree positions for tree nodes.

   100  * The program can be run standalone, or as a jtreg test.  In standalone mode,

   101  * errors can be displayed in a gui viewer. For info on command line args,

   102  * run program with no args.

   103  *

   104  * <p>

   105  * jtreg: Note that by using the -r switch in the test description below, this test

   106  * will process all java files in the langtools/test directory, thus implicitly

   107  * covering any new language features that may be tested in this test suite.

   108  */

   110 public class CheckAttributedTree extends JavacTestingAbstractThreadedTest {

   111     /**

   112      * Main entry point.

   113      * If test.src is set, program runs in jtreg mode, and will throw an Error

   114      * if any errors arise, otherwise System.exit will be used, unless the gui

   115      * viewer is being used. In jtreg mode, the default base directory for file

   116      * args is the value of ${test.src}. In jtreg mode, the -r option can be

   117      * given to change the default base directory to the root test directory.

   118      */

   119     public static void main(String... args) throws Exception {

   120         String testSrc = System.getProperty("test.src");

   121         File baseDir = (testSrc == null) ? null : new File(testSrc);

   122         throwAssertionOnError = false;

   123         boolean ok = new CheckAttributedTree().run(baseDir, args);

   124         if (!ok) {

   125             if (testSrc != null)  // jtreg mode

   126                 throw new Error("failed");

   127             else

   128                 System.exit(1);

   129         }

   130     }

   132     /**

   133      * Run the program. A base directory can be provided for file arguments.

   134      * In jtreg mode, the -r option can be given to change the default base

   135      * directory to the test root directory. For other options, see usage().

   136      * @param baseDir base directory for any file arguments.

   137      * @param args command line args

   138      * @return true if successful or in gui mode

   139      */

   140     boolean run(File baseDir, String... args) throws Exception {

   141         if (args.length == 0) {

   142             usage(System.out);

   143             return true;

   144         }

   146         List<File> files = new ArrayList<File>();

   147         for (int i = 0; i < args.length; i++) {

   148             String arg = args[i];

   149             if (arg.equals("-encoding") && i + 1 < args.length)

   150                 encoding = args[++i];

   151             else if (arg.equals("-gui"))

   152                 gui = true;

   153             else if (arg.equals("-q"))

   154                 quiet = true;

   155             else if (arg.equals("-v")) {

   156                 verbose = true;

   157                 printAll = true;

   158             }

   159             else if (arg.equals("-t") && i + 1 < args.length)

   160                 tags.add(args[++i]);

   161             else if (arg.equals("-ef") && i + 1 < args.length)

   162                 excludeFiles.add(new File(baseDir, args[++i]));

   163             else if (arg.equals("-et") && i + 1 < args.length)

   164                 excludeTags.add(args[++i]);

   165             else if (arg.equals("-r")) {

   166                 if (excludeFiles.size() > 0)

   167                     throw new Error("-r must be used before -ef");

   168                 File d = baseDir;

   169                 while (!new File(d, "TEST.ROOT").exists()) {

   170                     if (d == null)

   171                         throw new Error("cannot find TEST.ROOT");

   172                     d = d.getParentFile();

   173                 }

   174                 baseDir = d;

   175             }

   176             else if (arg.startsWith("-"))

   177                 throw new Error("unknown option: " + arg);

   178             else {

   179                 while (i < args.length)

   180                     files.add(new File(baseDir, args[i++]));

   181             }

   182         }

   184         for (File file: files) {

   185             if (file.exists())

   186                 test(file);

   187             else

   188                 error("File not found: " + file);

   189         }

   191         if (fileCount.get() != 1)

   192             errWriter.println(fileCount + " files read");

   193         checkAfterExec(false);

   195         return (gui || errCount.get() == 0);

   196     }

   198     /**

   199      * Print command line help.

   200      * @param out output stream

   201      */

   202     void usage(PrintStream out) {

   203         out.println("Usage:");

   204         out.println("  java CheckAttributedTree options... files...");

   205         out.println("");

   206         out.println("where options include:");

   207         out.println("-q        Quiet: don't report on inapplicable files");

   208         out.println("-gui      Display returns in a GUI viewer");

   209         out.println("-v        Verbose: report on files as they are being read");

   210         out.println("-t tag    Limit checks to tree nodes with this tag");

   211         out.println("          Can be repeated if desired");

   212         out.println("-ef file  Exclude file or directory");

   213         out.println("-et tag   Exclude tree nodes with given tag name");

   214         out.println("");

   215         out.println("files may be directories or files");

   216         out.println("directories will be scanned recursively");

   217         out.println("non java files, or java files which cannot be parsed, will be ignored");

   218         out.println("");

   219     }

   221     /**

   222      * Test a file. If the file is a directory, it will be recursively scanned

   223      * for java files.

   224      * @param file the file or directory to test

   225      */

   226     void test(final File file) {

   227         if (excludeFiles.contains(file)) {

   228             if (!quiet)

   229                 error("File " + file + " excluded");

   230             return;

   231         }

   233         if (file.isDirectory()) {

   234             for (File f: file.listFiles()) {

   235                 test(f);

   236             }

   237             return;

   238         }

   240         if (file.isFile() && file.getName().endsWith(".java")) {

   241             pool.execute(new Runnable() {

   242                 @Override

   243                 public void run() {

   244                     try {

   245                         if (verbose)

   246                             errWriter.println(file);

   247                         fileCount.incrementAndGet();

   248                         NPETester p = new NPETester();

   249                         p.test(read(file));

   250                     } catch (AttributionException e) {

   251                         if (!quiet) {

   252                             error("Error attributing " + file + "\n" + e.getMessage());

   253                         }

   254                     } catch (IOException e) {

   255                         error("Error reading " + file + ": " + e);

   256                     }

   257                 }

   258             });

   259         }

   261         if (!quiet)

   262             error("File " + file + " ignored");

   263     }

   265     // See CR:  6982992 Tests CheckAttributedTree.java, JavacTreeScannerTest.java, and SourceTreeeScannerTest.java timeout

   266     StringWriter sw = new StringWriter();

   267     PrintWriter pw = new PrintWriter(sw);

   268     Reporter r = new Reporter(pw);

   270     /**

   271      * Read a file.

   272      * @param file the file to be read

   273      * @return the tree for the content of the file

   274      * @throws IOException if any IO errors occur

   275      * @throws TreePosTest.ParseException if any errors occur while parsing the file

   276      */

   277     List<Pair<JCCompilationUnit, JCTree>> read(File file) throws IOException, AttributionException {

   278         r.errors = 0;

   279         Iterable<? extends JavaFileObject> files = fm.get().getJavaFileObjects(file);

   280         String[] opts = { "-XDshouldStopPolicy=ATTR", "-XDverboseCompilePolicy" };

   281         JavacTask task = (JavacTask)comp.getTask(pw, fm.get(), r, Arrays.asList(opts), null, files);

   282         final List<Element> analyzedElems = new ArrayList<>();

   283         task.setTaskListener(new TaskListener() {

   284             public void started(TaskEvent e) {

   285                 if (e.getKind() == TaskEvent.Kind.ANALYZE)

   286                         analyzedElems.add(e.getTypeElement());

   287             }

   288             public void finished(TaskEvent e) { }

   289         });

   291         try {

   292             Iterable<? extends CompilationUnitTree> trees = task.parse();

   293             task.analyze();

   294             List<Pair<JCCompilationUnit, JCTree>> res = new ArrayList<>();

   295             //System.out.println("Try to add pairs. Elems are " + analyzedElems);

   296             for (CompilationUnitTree t : trees) {

   297                JCCompilationUnit cu = (JCCompilationUnit)t;

   298                for (JCTree def : cu.defs) {

   299                    if (def.hasTag(CLASSDEF) &&

   300                            analyzedElems.contains(((JCTree.JCClassDecl)def).sym)) {

   301                        //System.out.println("Adding pair...");

   302                        res.add(new Pair<>(cu, def));

   303                    }

   304                }

   305             }

   306             return res;

   307         }

   308         catch (Throwable t) {

   309             throw new AttributionException("Exception while attributing file: " + file);

   310         }

   311     }

   313     /**

   314      * Report an error. When the program is complete, the program will either

   315      * exit or throw an Error if any errors have been reported.

   316      * @param msg the error message

   317      */

   318     void error(String msg) {

   319         System.err.println(msg);

   320         errCount.incrementAndGet();

   321     }

   323     /** Flag: don't report irrelevant files. */

   324     boolean quiet;

   325     /** Flag: show errors in GUI viewer. */

   326     boolean gui;

   327     /** The GUI viewer for errors. */

   328     Viewer viewer;

   329     /** Flag: report files as they are processed. */

   330     boolean verbose;

   331     /** Option: encoding for test files. */

   332     String encoding;

   333     /** The set of tags for tree nodes to be analyzed; if empty, all tree nodes

   334      * are analyzed. */

   335     Set<String> tags = new HashSet<String>();

   336     /** Set of files and directories to be excluded from analysis. */

   337     Set<File> excludeFiles = new HashSet<File>();

   338     /** Set of tag names to be excluded from analysis. */

   339     Set<String> excludeTags = new HashSet<String>();

   340     /** Utility class for trees */

   341     TreeUtil treeUtil = new TreeUtil();

   343     /**

   344      * Main class for testing assertions concerning types/symbol

   345      * left uninitialized after attribution

   346      */

   347     private class NPETester extends TreeScanner {

   348         void test(List<Pair<JCCompilationUnit, JCTree>> trees) {

   349             for (Pair<JCCompilationUnit, JCTree> p : trees) {

   350                 sourcefile = p.fst.sourcefile;

   351                 endPosTable = p.fst.endPositions;

   352                 encl = new Info(p.snd, endPosTable);

   353                 p.snd.accept(this);

   354             }

   355         }

   357         @Override

   358         public void scan(JCTree tree) {

   359             if (tree == null ||

   360                     excludeTags.contains(treeUtil.nameFromTag(tree.getTag()))) {

   361                 return;

   362             }

   364             Info self = new Info(tree, endPosTable);

   365             if (mandatoryType(tree)) {

   366                 check(tree.type != null,

   367                         "'null' field 'type' found in tree ", self);

   368                 if (tree.type==null)

   369                     new Throwable().printStackTrace();

   370             }

   372             Field errField = checkFields(tree);

   373             if (errField!=null) {

   374                 check(false,

   375                         "'null' field '" + errField.getName() + "' found in tree ", self);

   376             }

   378             Info prevEncl = encl;

   379             encl = self;

   380             tree.accept(this);

   381             encl = prevEncl;

   382         }

   384         private boolean mandatoryType(JCTree that) {

   385             return that instanceof JCTree.JCExpression ||

   386                     that.hasTag(VARDEF) ||

   387                     that.hasTag(METHODDEF) ||

   388                     that.hasTag(CLASSDEF);

   389         }

   391         private final List<String> excludedFields = Arrays.asList("varargsElement", "targetType");

   393         void check(boolean ok, String label, Info self) {

   394             if (!ok) {

   395                 if (gui) {

   396                     if (viewer == null)

   397                         viewer = new Viewer();

   398                     viewer.addEntry(sourcefile, label, encl, self);

   399                 }

   400                 error(label + self.toString() + " encl: " + encl.toString() +

   401                         " in file: " + sourcefile + "  " + self.tree);

   402             }

   403         }

   405         Field checkFields(JCTree t) {

   406             List<Field> fieldsToCheck = treeUtil.getFieldsOfType(t,

   407                     excludedFields,

   408                     Symbol.class,

   409                     Type.class);

   410             for (Field f : fieldsToCheck) {

   411                 try {

   412                     if (f.get(t) == null) {

   413                         return f;

   414                     }

   415                 }

   416                 catch (IllegalAccessException e) {

   417                     System.err.println("Cannot read field: " + f);

   418                     //swallow it

   419                 }

   420             }

   421             return null;

   422         }

   424         @Override

   425         public void visitImport(JCImport tree) { }

   427         @Override

   428         public void visitTopLevel(JCCompilationUnit tree) {

   429             scan(tree.defs);

   430         }

   432         JavaFileObject sourcefile;

   433         EndPosTable endPosTable;

   434         Info encl;

   435     }

   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         }

   449         Info(JCTree tree, EndPosTable 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         }

   457         @Override

   458         public String toString() {

   459             return treeUtil.nameFromTag(tree.getTag()) + "[start:" + start + ",pos:" + pos + ",end:" + end + "]";

   460         }

   462         final JCTree tree;

   463         final JCTree.Tag tag;

   464         final int start;

   465         final int pos;

   466         final int end;

   467     }

   469     /**

   470      * Names for tree tags.

   471      */

   472     private static class TreeUtil {

   473         String nameFromTag(JCTree.Tag tag) {

   474             String name = tag.name();

   475             return (name == null) ? "??" : name;

   476         }

   478         List<Field> getFieldsOfType(JCTree t, List<String> excludeNames, Class<?>... types) {

   479             List<Field> buf = new ArrayList<Field>();

   480             for (Field f : t.getClass().getDeclaredFields()) {

   481                 if (!excludeNames.contains(f.getName())) {

   482                     for (Class<?> type : types) {

   483                         if (type.isAssignableFrom(f.getType())) {

   484                             f.setAccessible(true);

   485                             buf.add(f);

   486                             break;

   487                         }

   488                     }

   489                 }

   490             }

   491             return buf;

   492         }

   493     }

   495     /**

   496      * Thrown when errors are found parsing a java file.

   497      */

   498     private static class ParseException extends Exception {

   499         ParseException(String msg) {

   500             super(msg);

   501         }

   502     }

   504     private static class AttributionException extends Exception {

   505         AttributionException(String msg) {

   506             super(msg);

   507         }

   508     }

   510     /**

   511      * DiagnosticListener to report diagnostics and count any errors that occur.

   512      */

   513     private static class Reporter implements DiagnosticListener<JavaFileObject> {

   514         Reporter(PrintWriter out) {

   515             this.out = out;

   516         }

   518         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {

   519             //out.println(diagnostic);

   520             switch (diagnostic.getKind()) {

   521                 case ERROR:

   522                     errors++;

   523             }

   524         }

   525         int errors;

   526         PrintWriter out;

   527     }

   529     /**

   530      * GUI viewer for issues found by TreePosTester. The viewer provides a drop

   531      * down list for selecting error conditions, a header area providing details

   532      * about an error, and a text area with the ranges of text highlighted as

   533      * appropriate.

   534      */

   535     private class Viewer extends JFrame {

   536         /**

   537          * Create a viewer.

   538          */

   539         Viewer() {

   540             initGUI();

   541         }

   543         /**

   544          * Add another entry to the list of errors.

   545          * @param file The file containing the error

   546          * @param check The condition that was being tested, and which failed

   547          * @param encl the enclosing tree node

   548          * @param self the tree node containing the error

   549          */

   550         void addEntry(JavaFileObject file, String check, Info encl, Info self) {

   551             Entry e = new Entry(file, check, encl, self);

   552             DefaultComboBoxModel m = (DefaultComboBoxModel) entries.getModel();

   553             m.addElement(e);

   554             if (m.getSize() == 1)

   555                 entries.setSelectedItem(e);

   556         }

   558         /**

   559          * Initialize the GUI window.

   560          */

   561         private void initGUI() {

   562             JPanel head = new JPanel(new GridBagLayout());

   563             GridBagConstraints lc = new GridBagConstraints();

   564             GridBagConstraints fc = new GridBagConstraints();

   565             fc.anchor = GridBagConstraints.WEST;

   566             fc.fill = GridBagConstraints.HORIZONTAL;

   567             fc.gridwidth = GridBagConstraints.REMAINDER;

   569             entries = new JComboBox();

   570             entries.addActionListener(new ActionListener() {

   571                 public void actionPerformed(ActionEvent e) {

   572                     showEntry((Entry) entries.getSelectedItem());

   573                 }

   574             });

   575             fc.insets.bottom = 10;

   576             head.add(entries, fc);

   577             fc.insets.bottom = 0;

   578             head.add(new JLabel("check:"), lc);

   579             head.add(checkField = createTextField(80), fc);

   580             fc.fill = GridBagConstraints.NONE;

   581             head.add(setBackground(new JLabel("encl:"), enclColor), lc);

   582             head.add(enclPanel = new InfoPanel(), fc);

   583             head.add(setBackground(new JLabel("self:"), selfColor), lc);

   584             head.add(selfPanel = new InfoPanel(), fc);

   585             add(head, BorderLayout.NORTH);

   587             body = new JTextArea();

   588             body.setFont(Font.decode(Font.MONOSPACED));

   589             body.addCaretListener(new CaretListener() {

   590                 public void caretUpdate(CaretEvent e) {

   591                     int dot = e.getDot();

   592                     int mark = e.getMark();

   593                     if (dot == mark)

   594                         statusText.setText("dot: " + dot);

   595                     else

   596                         statusText.setText("dot: " + dot + ", mark:" + mark);

   597                 }

   598             });

   599             JScrollPane p = new JScrollPane(body,

   600                     JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,

   601                     JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

   602             p.setPreferredSize(new Dimension(640, 480));

   603             add(p, BorderLayout.CENTER);

   605             statusText = createTextField(80);

   606             add(statusText, BorderLayout.SOUTH);

   608             pack();

   609             setLocationRelativeTo(null); // centered on screen

   610             setVisible(true);

   611             setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

   612         }

   614         /** Show an entry that has been selected. */

   615         private void showEntry(Entry e) {

   616             try {

   617                 // update simple fields

   618                 setTitle(e.file.getName());

   619                 checkField.setText(e.check);

   620                 enclPanel.setInfo(e.encl);

   621                 selfPanel.setInfo(e.self);

   622                 // show file text with highlights

   623                 body.setText(e.file.getCharContent(true).toString());

   624                 Highlighter highlighter = body.getHighlighter();

   625                 highlighter.removeAllHighlights();

   626                 addHighlight(highlighter, e.encl, enclColor);

   627                 addHighlight(highlighter, e.self, selfColor);

   628                 scroll(body, getMinPos(enclPanel.info, selfPanel.info));

   629             } catch (IOException ex) {

   630                 body.setText("Cannot read " + e.file.getName() + ": " + e);

   631             }

   632         }

   634         /** Create a test field. */

   635         private JTextField createTextField(int width) {

   636             JTextField f = new JTextField(width);

   637             f.setEditable(false);

   638             f.setBorder(null);

   639             return f;

   640         }

   642         /** Add a highlighted region based on the positions in an Info object. */

   643         private void addHighlight(Highlighter h, Info info, Color c) {

   644             int start = info.start;

   645             int end = info.end;

   646             if (start == -1 && end == -1)

   647                 return;

   648             if (start == -1)

   649                 start = end;

   650             if (end == -1)

   651                 end = start;

   652             try {

   653                 h.addHighlight(info.start, info.end,

   654                         new DefaultHighlighter.DefaultHighlightPainter(c));

   655                 if (info.pos != -1) {

   656                     Color c2 = new Color(c.getRed(), c.getGreen(), c.getBlue(), (int)(.4f * 255)); // 40%

   657                     h.addHighlight(info.pos, info.pos + 1,

   658                         new DefaultHighlighter.DefaultHighlightPainter(c2));

   659                 }

   660             } catch (BadLocationException e) {

   661                 e.printStackTrace();

   662             }

   663         }

   665         /** Get the minimum valid position in a set of info objects. */

   666         private int getMinPos(Info... values) {

   667             int i = Integer.MAX_VALUE;

   668             for (Info info: values) {

   669                 if (info.start >= 0) i = Math.min(i, info.start);

   670                 if (info.pos   >= 0) i = Math.min(i, info.pos);

   671                 if (info.end   >= 0) i = Math.min(i, info.end);

   672             }

   673             return (i == Integer.MAX_VALUE) ? 0 : i;

   674         }

   676         /** Set the background on a component. */

   677         private JComponent setBackground(JComponent comp, Color c) {

   678             comp.setOpaque(true);

   679             comp.setBackground(c);

   680             return comp;

   681         }

   683         /** Scroll a text area to display a given position near the middle of the visible area. */

   684         private void scroll(final JTextArea t, final int pos) {

   685             // Using invokeLater appears to give text a chance to sort itself out

   686             // before the scroll happens; otherwise scrollRectToVisible doesn't work.

   687             // Maybe there's a better way to sync with the text...

   688             EventQueue.invokeLater(new Runnable() {

   689                 public void run() {

   690                     try {

   691                         Rectangle r = t.modelToView(pos);

   692                         JScrollPane p = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, t);

   693                         r.y = Math.max(0, r.y - p.getHeight() * 2 / 5);

   694                         r.height += p.getHeight() * 4 / 5;

   695                         t.scrollRectToVisible(r);

   696                     } catch (BadLocationException ignore) {

   697                     }

   698                 }

   699             });

   700         }

   702         private JComboBox entries;

   703         private JTextField checkField;

   704         private InfoPanel enclPanel;

   705         private InfoPanel selfPanel;

   706         private JTextArea body;

   707         private JTextField statusText;

   709         private Color selfColor = new Color(0.f, 1.f, 0.f, 0.2f); // 20% green

   710         private Color enclColor = new Color(1.f, 0.f, 0.f, 0.2f); // 20% red

   712         /** Panel to display an Info object. */

   713         private class InfoPanel extends JPanel {

   714             InfoPanel() {

   715                 add(tagName = createTextField(20));

   716                 add(new JLabel("start:"));

   717                 add(addListener(start = createTextField(6)));

   718                 add(new JLabel("pos:"));

   719                 add(addListener(pos = createTextField(6)));

   720                 add(new JLabel("end:"));

   721                 add(addListener(end = createTextField(6)));

   722             }

   724             void setInfo(Info info) {

   725                 this.info = info;

   726                 tagName.setText(treeUtil.nameFromTag(info.tag));

   727                 start.setText(String.valueOf(info.start));

   728                 pos.setText(String.valueOf(info.pos));

   729                 end.setText(String.valueOf(info.end));

   730             }

   732             JTextField addListener(final JTextField f) {

   733                 f.addMouseListener(new MouseAdapter() {

   734                     @Override

   735                     public void mouseClicked(MouseEvent e) {

   736                         body.setCaretPosition(Integer.valueOf(f.getText()));

   737                         body.getCaret().setVisible(true);

   738                     }

   739                 });

   740                 return f;

   741             }

   743             Info info;

   744             JTextField tagName;

   745             JTextField start;

   746             JTextField pos;

   747             JTextField end;

   748         }

   750         /** Object to record information about an error to be displayed. */

   751         private class Entry {

   752             Entry(JavaFileObject file, String check, Info encl, Info self) {

   753                 this.file = file;

   754                 this.check = check;

   755                 this.encl = encl;

   756                 this.self= self;

   757             }

   759             @Override

   760             public String toString() {

   761                 return file.getName() + " " + check + " " + getMinPos(encl, self);

   762             }

   764             final JavaFileObject file;

   765             final String check;

   766             final Info encl;

   767             final Info self;

   768         }

   769     }

   771     /** Number of files that have been analyzed. */

   772     static AtomicInteger fileCount = new AtomicInteger();

   774 }

Mercurial > jdk8-mips64-public > langtools / file revision

test/tools/javac/failover/CheckAttributedTree.java@71f35e4b93a5

test/tools/javac/failover/CheckAttributedTree.java