jdk8-mips64-public/langtools: test/tools/javac/failover/CheckAttributedTree.java@f497fac86cf9

     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  */

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

    25 import java.awt.BorderLayout;

    26 import java.awt.Color;

    27 import java.awt.Dimension;

    28 import java.awt.EventQueue;

    29 import java.awt.Font;

    30 import java.awt.GridBagConstraints;

    31 import java.awt.GridBagLayout;

    32 import java.awt.Rectangle;

    33 import java.awt.event.ActionEvent;

    34 import java.awt.event.ActionListener;

    35 import java.awt.event.MouseAdapter;

    36 import java.awt.event.MouseEvent;

    37 import javax.swing.DefaultComboBoxModel;

    38 import javax.swing.JComboBox;

    39 import javax.swing.JComponent;

    40 import javax.swing.JFrame;

    41 import javax.swing.JLabel;

    42 import javax.swing.JPanel;

    43 import javax.swing.JScrollPane;

    44 import javax.swing.JTextArea;

    45 import javax.swing.JTextField;

    46 import javax.swing.SwingUtilities;

    47 import javax.swing.event.CaretEvent;

    48 import javax.swing.event.CaretListener;

    49 import javax.swing.text.BadLocationException;

    50 import javax.swing.text.DefaultHighlighter;

    51 import javax.swing.text.Highlighter;

    52 import java.io.File;

    53 import java.io.IOException;

    54 import java.io.PrintStream;

    55 import java.io.PrintWriter;

    56 import java.io.StringWriter;

    57 import java.lang.reflect.Field;

    58 import java.lang.reflect.Modifier;

    59 import java.nio.charset.Charset;

    60 import java.util.ArrayList;

    61 import java.util.HashMap;

    62 import java.util.List;

    63 import java.util.Map;

    64 import javax.tools.Diagnostic;

    65 import javax.tools.DiagnosticListener;

    66 import javax.tools.JavaFileObject;

    67 import javax.tools.StandardJavaFileManager;

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

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

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

    72 import com.sun.tools.javac.api.JavacTool;

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

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

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

    76 import com.sun.tools.javac.tree.JCTree.JCClassDecl;

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

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

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

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

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

    83 import java.util.Arrays;

    84 import java.util.HashSet;

    85 import java.util.Set;

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

    88 /**

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

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

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

    92  * run program with no args.

    93  *

    94  * <p>

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

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

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

    98  */

   100 /*

   101  * @test

   102  * @bug 6970584

   103  * @summary assorted position errors in compiler syntax trees

   104  * @run main CheckAttributedTree -q -r -et ERRONEOUS .

   105  */

   106 public class CheckAttributedTree {

   107     /**

   108      * Main entry point.

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

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

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

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

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

   114      */

   115     public static void main(String... args) {

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

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

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

   119         if (!ok) {

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

   121                 throw new Error("failed");

   122             else

   123                 System.exit(1);

   124         }

   125     }

   127     /**

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

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

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

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

   132      * @param args command line args

   133      * @return true if successful or in gui mode

   134      */

   135     boolean run(File baseDir, String... args) {

   136         if (args.length == 0) {

   137             usage(System.out);

   138             return true;

   139         }

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

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

   143             String arg = args[i];

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

   145                 encoding = args[++i];

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

   147                 gui = true;

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

   149                 quiet = true;

   150             else if (arg.equals("-v"))

   151                 verbose = true;

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

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

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

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

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

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

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

   159                 if (excludeFiles.size() > 0)

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

   161                 File d = baseDir;

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

   163                     if (d == null)

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

   165                     d = d.getParentFile();

   166                 }

   167                 baseDir = d;

   168             }

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

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

   171             else {

   172                 while (i < args.length)

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

   174             }

   175         }

   177         for (File file: files) {

   178             if (file.exists())

   179                 test(file);

   180             else

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

   182         }

   184         if (fileCount != 1)

   185             System.err.println(fileCount + " files read");

   186         if (errors > 0)

   187             System.err.println(errors + " errors");

   189         return (gui || errors == 0);

   190     }

   192     /**

   193      * Print command line help.

   194      * @param out output stream

   195      */

   196     void usage(PrintStream out) {

   197         out.println("Usage:");

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

   199         out.println("");

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

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

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

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

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

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

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

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

   208         out.println("");

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

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

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

   212         out.println("");

   213     }

   215     /**

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

   217      * for java files.

   218      * @param file the file or directory to test

   219      */

   220     void test(File file) {

   221         if (excludeFiles.contains(file)) {

   222             if (!quiet)

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

   224             return;

   225         }

   227         if (file.isDirectory()) {

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

   229                 test(f);

   230             }

   231             return;

   232         }

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

   235             try {

   236                 if (verbose)

   237                     System.err.println(file);

   238                 fileCount++;

   239                 NPETester p = new NPETester();

   240                 p.test(read(file));

   241             } catch (AttributionException e) {

   242                 if (!quiet) {

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

   244                 }

   245             } catch (IOException e) {

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

   247             }

   248             return;

   249         }

   251         if (!quiet)

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

   253     }

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

   256     StringWriter sw = new StringWriter();

   257     PrintWriter pw = new PrintWriter(sw);

   258     Reporter r = new Reporter(pw);

   259     JavacTool tool = JavacTool.create();

   260     StandardJavaFileManager fm = tool.getStandardFileManager(r, null, null);

   262     /**

   263      * Read a file.

   264      * @param file the file to be read

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

   266      * @throws IOException if any IO errors occur

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

   268      */

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

   270         JavacTool tool = JavacTool.create();

   271         r.errors = 0;

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

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

   274         JavacTask task = tool.getTask(pw, fm, r, Arrays.asList(opts), null, files);

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

   276         task.setTaskListener(new TaskListener() {

   277             public void started(TaskEvent e) {

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

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

   280             }

   281             public void finished(TaskEvent e) { }

   282         });

   284         try {

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

   286             task.analyze();

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

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

   289             for (CompilationUnitTree t : trees) {

   290                JCCompilationUnit cu = (JCCompilationUnit)t;

   291                for (JCTree def : cu.defs) {

   292                    if (def.getTag() == JCTree.CLASSDEF &&

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

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

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

   296                    }

   297                }

   298             }

   299             return res;

   300         }

   301         catch (Throwable t) {

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

   303         }

   304     }

   306     /**

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

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

   309      * @param msg the error message

   310      */

   311     void error(String msg) {

   312         System.err.println(msg);

   313         errors++;

   314     }

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

   317     int fileCount;

   318     /** Number of errors reported. */

   319     int errors;

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

   321     boolean quiet;

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

   323     boolean gui;

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

   325     Viewer viewer;

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

   327     boolean verbose;

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

   329     String encoding;

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

   331      * are analyzed. */

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

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

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

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

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

   337     /** Utility class for trees */

   338     TreeUtil treeUtil = new TreeUtil();

   340     /**

   341      * Main class for testing assertions concerning types/symbol

   342      * left uninitialized after attribution

   343      */

   344     private class NPETester extends TreeScanner {

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

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

   347                 sourcefile = p.fst.sourcefile;

   348                 endPosTable = p.fst.endPositions;

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

   350                 p.snd.accept(this);

   351             }

   352         }

   354         @Override

   355         public void scan(JCTree tree) {

   356             if (tree == null ||

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

   358                 return;

   359             }

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

   362             check(!mandatoryType(tree) ||

   363                     (tree.type != null &&

   364                     checkFields(tree)),

   365                     "'null' found in tree ",

   366                     self);

   368             Info prevEncl = encl;

   369             encl = self;

   370             tree.accept(this);

   371             encl = prevEncl;

   372         }

   374         private boolean mandatoryType(JCTree that) {

   375             return that instanceof JCTree.JCExpression ||

   376                     that.getTag() == JCTree.VARDEF ||

   377                     that.getTag() == JCTree.METHODDEF ||

   378                     that.getTag() == JCTree.CLASSDEF;

   379         }

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

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

   384             if (!ok) {

   385                 if (gui) {

   386                     if (viewer == null)

   387                         viewer = new Viewer();

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

   389                 }

   390                 error(label + self.toString() + " encl: " + encl.toString() + " in file: " + sourcefile + "  " + self.tree);

   391             }

   392         }

   394         boolean checkFields(JCTree t) {

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

   396                     excludedFields,

   397                     Symbol.class,

   398                     Type.class);

   399             for (Field f : fieldsToCheck) {

   400                 try {

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

   402                         return false;

   403                     }

   404                 }

   405                 catch (IllegalAccessException e) {

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

   407                     //swallow it

   408                 }

   409             }

   410             return true;

   411         }

   413         @Override

   414         public void visitImport(JCImport tree) { }

   416         @Override

   417         public void visitTopLevel(JCCompilationUnit tree) {

   418             scan(tree.defs);

   419         }

   421         JavaFileObject sourcefile;

   422         Map<JCTree, Integer> endPosTable;

   423         Info encl;

   424     }

   426     /**

   427      * Utility class providing easy access to position and other info for a tree node.

   428      */

   429     private class Info {

   430         Info() {

   431             tree = null;

   432             tag = JCTree.ERRONEOUS;

   433             start = 0;

   434             pos = 0;

   435             end = Integer.MAX_VALUE;

   436         }

   438         Info(JCTree tree, Map<JCTree, Integer> endPosTable) {

   439             this.tree = tree;

   440             tag = tree.getTag();

   441             start = TreeInfo.getStartPos(tree);

   442             pos = tree.pos;

   443             end = TreeInfo.getEndPos(tree, endPosTable);

   444         }

   446         @Override

   447         public String toString() {

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

   449         }

   451         final JCTree tree;

   452         final int tag;

   453         final int start;

   454         final int pos;

   455         final int end;

   456     }

   458     /**

   459      * Names for tree tags.

   460      * javac does not provide an API to convert tag values to strings, so this class uses

   461      * reflection to determine names of public static final int values in JCTree.

   462      */

   463     private static class TreeUtil {

   464         String nameFromTag(int tag) {

   465             if (names == null) {

   466                 names = new HashMap<Integer, String>();

   467                 Class c = JCTree.class;

   468                 for (Field f : c.getDeclaredFields()) {

   469                     if (f.getType().equals(int.class)) {

   470                         int mods = f.getModifiers();

   471                         if (Modifier.isPublic(mods) && Modifier.isStatic(mods) && Modifier.isFinal(mods)) {

   472                             try {

   473                                 names.put(f.getInt(null), f.getName());

   474                             } catch (IllegalAccessException e) {

   475                             }

   476                         }

   477                     }

   478                 }

   479             }

   480             String name = names.get(tag);

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

   482         }

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

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

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

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

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

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

   490                             f.setAccessible(true);

   491                             buf.add(f);

   492                             break;

   493                         }

   494                     }

   495                 }

   496             }

   497             return buf;

   498         }

   500         private Map<Integer, String> names;

   501     }

   503     /**

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

   505      */

   506     private static class ParseException extends Exception {

   507         ParseException(String msg) {

   508             super(msg);

   509         }

   510     }

   512     private static class AttributionException extends Exception {

   513         AttributionException(String msg) {

   514             super(msg);

   515         }

   516     }

   518     /**

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

   520      */

   521     private static class Reporter implements DiagnosticListener<JavaFileObject> {

   522         Reporter(PrintWriter out) {

   523             this.out = out;

   524         }

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

   527             out.println(diagnostic);

   528             switch (diagnostic.getKind()) {

   529                 case ERROR:

   530                     errors++;

   531             }

   532         }

   533         int errors;

   534         PrintWriter out;

   535     }

   537     /**

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

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

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

   541      * appropriate.

   542      */

   543     private class Viewer extends JFrame {

   544         /**

   545          * Create a viewer.

   546          */

   547         Viewer() {

   548             initGUI();

   549         }

   551         /**

   552          * Add another entry to the list of errors.

   553          * @param file The file containing the error

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

   555          * @param encl the enclosing tree node

   556          * @param self the tree node containing the error

   557          */

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

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

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

   561             m.addElement(e);

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

   563                 entries.setSelectedItem(e);

   564         }

   566         /**

   567          * Initialize the GUI window.

   568          */

   569         private void initGUI() {

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

   571             GridBagConstraints lc = new GridBagConstraints();

   572             GridBagConstraints fc = new GridBagConstraints();

   573             fc.anchor = GridBagConstraints.WEST;

   574             fc.fill = GridBagConstraints.HORIZONTAL;

   575             fc.gridwidth = GridBagConstraints.REMAINDER;

   577             entries = new JComboBox();

   578             entries.addActionListener(new ActionListener() {

   579                 public void actionPerformed(ActionEvent e) {

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

   581                 }

   582             });

   583             fc.insets.bottom = 10;

   584             head.add(entries, fc);

   585             fc.insets.bottom = 0;

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

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

   588             fc.fill = GridBagConstraints.NONE;

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

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

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

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

   593             add(head, BorderLayout.NORTH);

   595             body = new JTextArea();

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

   597             body.addCaretListener(new CaretListener() {

   598                 public void caretUpdate(CaretEvent e) {

   599                     int dot = e.getDot();

   600                     int mark = e.getMark();

   601                     if (dot == mark)

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

   603                     else

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

   605                 }

   606             });

   607             JScrollPane p = new JScrollPane(body,

   608                     JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,

   609                     JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

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

   611             add(p, BorderLayout.CENTER);

   613             statusText = createTextField(80);

   614             add(statusText, BorderLayout.SOUTH);

   616             pack();

   617             setLocationRelativeTo(null); // centered on screen

   618             setVisible(true);

   619             setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

   620         }

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

   623         private void showEntry(Entry e) {

   624             try {

   625                 // update simple fields

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

   627                 checkField.setText(e.check);

   628                 enclPanel.setInfo(e.encl);

   629                 selfPanel.setInfo(e.self);

   630                 // show file text with highlights

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

   632                 Highlighter highlighter = body.getHighlighter();

   633                 highlighter.removeAllHighlights();

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

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

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

   637             } catch (IOException ex) {

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

   639             }

   640         }

   642         /** Create a test field. */

   643         private JTextField createTextField(int width) {

   644             JTextField f = new JTextField(width);

   645             f.setEditable(false);

   646             f.setBorder(null);

   647             return f;

   648         }

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

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

   652             int start = info.start;

   653             int end = info.end;

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

   655                 return;

   656             if (start == -1)

   657                 start = end;

   658             if (end == -1)

   659                 end = start;

   660             try {

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

   662                         new DefaultHighlighter.DefaultHighlightPainter(c));

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

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

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

   666                         new DefaultHighlighter.DefaultHighlightPainter(c2));

   667                 }

   668             } catch (BadLocationException e) {

   669                 e.printStackTrace();

   670             }

   671         }

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

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

   675             int i = Integer.MAX_VALUE;

   676             for (Info info: values) {

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

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

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

   680             }

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

   682         }

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

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

   686             comp.setOpaque(true);

   687             comp.setBackground(c);

   688             return comp;

   689         }

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

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

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

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

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

   696             EventQueue.invokeLater(new Runnable() {

   697                 public void run() {

   698                     try {

   699                         Rectangle r = t.modelToView(pos);

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

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

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

   703                         t.scrollRectToVisible(r);

   704                     } catch (BadLocationException ignore) {

   705                     }

   706                 }

   707             });

   708         }

   710         private JComboBox entries;

   711         private JTextField checkField;

   712         private InfoPanel enclPanel;

   713         private InfoPanel selfPanel;

   714         private JTextArea body;

   715         private JTextField statusText;

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

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

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

   721         private class InfoPanel extends JPanel {

   722             InfoPanel() {

   723                 add(tagName = createTextField(20));

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

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

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

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

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

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

   730             }

   732             void setInfo(Info info) {

   733                 this.info = info;

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

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

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

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

   738             }

   740             JTextField addListener(final JTextField f) {

   741                 f.addMouseListener(new MouseAdapter() {

   742                     @Override

   743                     public void mouseClicked(MouseEvent e) {

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

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

   746                     }

   747                 });

   748                 return f;

   749             }

   751             Info info;

   752             JTextField tagName;

   753             JTextField start;

   754             JTextField pos;

   755             JTextField end;

   756         }

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

   759         private class Entry {

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

   761                 this.file = file;

   762                 this.check = check;

   763                 this.encl = encl;

   764                 this.self= self;

   765             }

   767             @Override

   768             public String toString() {

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

   770             }

   772             final JavaFileObject file;

   773             final String check;

   774             final Info encl;

   775             final Info self;

   776         }

   777     }

   778 }

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

test/tools/javac/failover/CheckAttributedTree.java@f497fac86cf9

test/tools/javac/failover/CheckAttributedTree.java