jdk8-mips64-public/langtools: test/tools/javac/failover/CheckAttributedTree.java@4868a36f6fd8

     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     /**

   256      * Read a file.

   257      * @param file the file to be read

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

   259      * @throws IOException if any IO errors occur

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

   261      */

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

   263         StringWriter sw = new StringWriter();

   264         PrintWriter pw = new PrintWriter(sw);

   265         Reporter r = new Reporter(pw);

   266         JavacTool tool = JavacTool.create();

   267         Charset cs = (encoding == null ? null : Charset.forName(encoding));

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

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

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

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

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

   273         task.setTaskListener(new TaskListener() {

   274             public void started(TaskEvent e) {

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

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

   277             }

   278             public void finished(TaskEvent e) { }

   279         });

   281         try {

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

   283             task.analyze();

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

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

   286             for (CompilationUnitTree t : trees) {

   287                JCCompilationUnit cu = (JCCompilationUnit)t;

   288                for (JCTree def : cu.defs) {

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

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

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

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

   293                    }

   294                }

   295             }

   296             return res;

   297         }

   298         catch (Throwable t) {

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

   300         }

   301     }

   303     /**

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

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

   306      * @param msg the error message

   307      */

   308     void error(String msg) {

   309         System.err.println(msg);

   310         errors++;

   311     }

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

   314     int fileCount;

   315     /** Number of errors reported. */

   316     int errors;

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

   318     boolean quiet;

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

   320     boolean gui;

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

   322     Viewer viewer;

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

   324     boolean verbose;

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

   326     String encoding;

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

   328      * are analyzed. */

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

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

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

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

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

   334     /** Utility class for trees */

   335     TreeUtil treeUtil = new TreeUtil();

   337     /**

   338      * Main class for testing assertions concerning types/symbol

   339      * left uninitialized after attribution

   340      */

   341     private class NPETester extends TreeScanner {

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

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

   344                 sourcefile = p.fst.sourcefile;

   345                 endPosTable = p.fst.endPositions;

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

   347                 p.snd.accept(this);

   348             }

   349         }

   351         @Override

   352         public void scan(JCTree tree) {

   353             if (tree == null ||

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

   355                 return;

   356             }

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

   359             check(!mandatoryType(tree) ||

   360                     (tree.type != null &&

   361                     checkFields(tree)),

   362                     "'null' found in tree ",

   363                     self);

   365             Info prevEncl = encl;

   366             encl = self;

   367             tree.accept(this);

   368             encl = prevEncl;

   369         }

   371         private boolean mandatoryType(JCTree that) {

   372             return that instanceof JCTree.JCExpression ||

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

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

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

   376         }

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

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

   381             if (!ok) {

   382                 if (gui) {

   383                     if (viewer == null)

   384                         viewer = new Viewer();

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

   386                 }

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

   388             }

   389         }

   391         boolean checkFields(JCTree t) {

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

   393                     excludedFields,

   394                     Symbol.class,

   395                     Type.class);

   396             for (Field f : fieldsToCheck) {

   397                 try {

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

   399                         return false;

   400                     }

   401                 }

   402                 catch (IllegalAccessException e) {

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

   404                     //swallow it

   405                 }

   406             }

   407             return true;

   408         }

   410         @Override

   411         public void visitImport(JCImport tree) { }

   413         @Override

   414         public void visitTopLevel(JCCompilationUnit tree) {

   415             scan(tree.defs);

   416         }

   418         JavaFileObject sourcefile;

   419         Map<JCTree, Integer> endPosTable;

   420         Info encl;

   421     }

   423     /**

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

   425      */

   426     private class Info {

   427         Info() {

   428             tree = null;

   429             tag = JCTree.ERRONEOUS;

   430             start = 0;

   431             pos = 0;

   432             end = Integer.MAX_VALUE;

   433         }

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

   436             this.tree = tree;

   437             tag = tree.getTag();

   438             start = TreeInfo.getStartPos(tree);

   439             pos = tree.pos;

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

   441         }

   443         @Override

   444         public String toString() {

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

   446         }

   448         final JCTree tree;

   449         final int tag;

   450         final int start;

   451         final int pos;

   452         final int end;

   453     }

   455     /**

   456      * Names for tree tags.

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

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

   459      */

   460     private static class TreeUtil {

   461         String nameFromTag(int tag) {

   462             if (names == null) {

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

   464                 Class c = JCTree.class;

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

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

   467                         int mods = f.getModifiers();

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

   469                             try {

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

   471                             } catch (IllegalAccessException e) {

   472                             }

   473                         }

   474                     }

   475                 }

   476             }

   477             String name = names.get(tag);

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

   479         }

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

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

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

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

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

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

   487                             f.setAccessible(true);

   488                             buf.add(f);

   489                             break;

   490                         }

   491                     }

   492                 }

   493             }

   494             return buf;

   495         }

   497         private Map<Integer, String> names;

   498     }

   500     /**

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

   502      */

   503     private static class ParseException extends Exception {

   504         ParseException(String msg) {

   505             super(msg);

   506         }

   507     }

   509     private static class AttributionException extends Exception {

   510         AttributionException(String msg) {

   511             super(msg);

   512         }

   513     }

   515     /**

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

   517      */

   518     private static class Reporter implements DiagnosticListener<JavaFileObject> {

   519         Reporter(PrintWriter out) {

   520             this.out = out;

   521         }

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

   524             out.println(diagnostic);

   525             switch (diagnostic.getKind()) {

   526                 case ERROR:

   527                     errors++;

   528             }

   529         }

   530         int errors;

   531         PrintWriter out;

   532     }

   534     /**

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

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

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

   538      * appropriate.

   539      */

   540     private class Viewer extends JFrame {

   541         /**

   542          * Create a viewer.

   543          */

   544         Viewer() {

   545             initGUI();

   546         }

   548         /**

   549          * Add another entry to the list of errors.

   550          * @param file The file containing the error

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

   552          * @param encl the enclosing tree node

   553          * @param self the tree node containing the error

   554          */

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

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

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

   558             m.addElement(e);

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

   560                 entries.setSelectedItem(e);

   561         }

   563         /**

   564          * Initialize the GUI window.

   565          */

   566         private void initGUI() {

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

   568             GridBagConstraints lc = new GridBagConstraints();

   569             GridBagConstraints fc = new GridBagConstraints();

   570             fc.anchor = GridBagConstraints.WEST;

   571             fc.fill = GridBagConstraints.HORIZONTAL;

   572             fc.gridwidth = GridBagConstraints.REMAINDER;

   574             entries = new JComboBox();

   575             entries.addActionListener(new ActionListener() {

   576                 public void actionPerformed(ActionEvent e) {

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

   578                 }

   579             });

   580             fc.insets.bottom = 10;

   581             head.add(entries, fc);

   582             fc.insets.bottom = 0;

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

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

   585             fc.fill = GridBagConstraints.NONE;

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

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

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

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

   590             add(head, BorderLayout.NORTH);

   592             body = new JTextArea();

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

   594             body.addCaretListener(new CaretListener() {

   595                 public void caretUpdate(CaretEvent e) {

   596                     int dot = e.getDot();

   597                     int mark = e.getMark();

   598                     if (dot == mark)

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

   600                     else

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

   602                 }

   603             });

   604             JScrollPane p = new JScrollPane(body,

   605                     JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,

   606                     JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

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

   608             add(p, BorderLayout.CENTER);

   610             statusText = createTextField(80);

   611             add(statusText, BorderLayout.SOUTH);

   613             pack();

   614             setLocationRelativeTo(null); // centered on screen

   615             setVisible(true);

   616             setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

   617         }

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

   620         private void showEntry(Entry e) {

   621             try {

   622                 // update simple fields

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

   624                 checkField.setText(e.check);

   625                 enclPanel.setInfo(e.encl);

   626                 selfPanel.setInfo(e.self);

   627                 // show file text with highlights

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

   629                 Highlighter highlighter = body.getHighlighter();

   630                 highlighter.removeAllHighlights();

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

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

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

   634             } catch (IOException ex) {

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

   636             }

   637         }

   639         /** Create a test field. */

   640         private JTextField createTextField(int width) {

   641             JTextField f = new JTextField(width);

   642             f.setEditable(false);

   643             f.setBorder(null);

   644             return f;

   645         }

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

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

   649             int start = info.start;

   650             int end = info.end;

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

   652                 return;

   653             if (start == -1)

   654                 start = end;

   655             if (end == -1)

   656                 end = start;

   657             try {

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

   659                         new DefaultHighlighter.DefaultHighlightPainter(c));

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

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

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

   663                         new DefaultHighlighter.DefaultHighlightPainter(c2));

   664                 }

   665             } catch (BadLocationException e) {

   666                 e.printStackTrace();

   667             }

   668         }

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

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

   672             int i = Integer.MAX_VALUE;

   673             for (Info info: values) {

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

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

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

   677             }

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

   679         }

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

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

   683             comp.setOpaque(true);

   684             comp.setBackground(c);

   685             return comp;

   686         }

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

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

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

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

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

   693             EventQueue.invokeLater(new Runnable() {

   694                 public void run() {

   695                     try {

   696                         Rectangle r = t.modelToView(pos);

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

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

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

   700                         t.scrollRectToVisible(r);

   701                     } catch (BadLocationException ignore) {

   702                     }

   703                 }

   704             });

   705         }

   707         private JComboBox entries;

   708         private JTextField checkField;

   709         private InfoPanel enclPanel;

   710         private InfoPanel selfPanel;

   711         private JTextArea body;

   712         private JTextField statusText;

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

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

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

   718         private class InfoPanel extends JPanel {

   719             InfoPanel() {

   720                 add(tagName = createTextField(20));

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

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

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

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

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

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

   727             }

   729             void setInfo(Info info) {

   730                 this.info = info;

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

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

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

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

   735             }

   737             JTextField addListener(final JTextField f) {

   738                 f.addMouseListener(new MouseAdapter() {

   739                     @Override

   740                     public void mouseClicked(MouseEvent e) {

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

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

   743                     }

   744                 });

   745                 return f;

   746             }

   748             Info info;

   749             JTextField tagName;

   750             JTextField start;

   751             JTextField pos;

   752             JTextField end;

   753         }

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

   756         private class Entry {

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

   758                 this.file = file;

   759                 this.check = check;

   760                 this.encl = encl;

   761                 this.self= self;

   762             }

   764             @Override

   765             public String toString() {

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

   767             }

   769             final JavaFileObject file;

   770             final String check;

   771             final Info encl;

   772             final Info self;

   773         }

   774     }

   775 }

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

test/tools/javac/failover/CheckAttributedTree.java@4868a36f6fd8

test/tools/javac/failover/CheckAttributedTree.java