jdk8-mips64-public/langtools: test/tools/javac/6304921/TestLog.java@4868a36f6fd8

     1 /*

     2  * Copyright (c) 2005, 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 /*

    25  * @test

    26  * @bug 6304912

    27  * @summary unit test for Log

    28  */

    29 import java.io.InputStream;

    30 import java.io.IOException;

    31 import java.io.OutputStream;

    32 import java.net.URI;

    33 import javax.tools.JavaFileObject;

    34 import javax.tools.SimpleJavaFileObject;

    35 import com.sun.tools.javac.file.JavacFileManager;

    36 import com.sun.tools.javac.parser.Parser;

    37 import com.sun.tools.javac.parser.ParserFactory;

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

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

    40 import com.sun.tools.javac.util.Context;

    41 import com.sun.tools.javac.util.Log;

    42 import com.sun.tools.javac.util.JCDiagnostic;

    43 import com.sun.tools.javac.util.Options;

    45 public class TestLog

    46 {

    47     public static void main(String... args) throws IOException {

    48         test(false);

    49         test(true);

    50     }

    52     static void test(boolean genEndPos) throws IOException {

    53         Context context = new Context();

    55         Options options = Options.instance(context);

    56         options.put("diags", "%b:%s/%o/%e:%_%t%m|%p%m");

    58         Log log = Log.instance(context);

    59         log.multipleErrors = true;

    61         JavacFileManager.preRegister(context);

    62         ParserFactory pfac = ParserFactory.instance(context);

    64         final String text =

    65               "public class Foo {\n"

    66             + "  public static void main(String[] args) {\n"

    67             + "    if (args.length == 0)\n"

    68             + "      System.out.println(\"no args\");\n"

    69             + "    else\n"

    70             + "      System.out.println(args.length + \" args\");\n"

    71             + "  }\n"

    72             + "}\n";

    73         JavaFileObject fo = new StringJavaFileObject("Foo", text);

    74         log.useSource(fo);

    76         CharSequence cs = fo.getCharContent(true);

    77         Parser parser = pfac.newParser(cs, false, genEndPos, false);

    78         JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();

    79         log.setEndPosTable(fo, tree.endPositions);

    81         TreeScanner ts = new LogTester(log, tree.endPositions);

    82         ts.scan(tree);

    84         check(log.nerrors, 4, "errors");

    85         check(log.nwarnings, 4, "warnings");

    86     }

    88     private static void check(int found, int expected, String name) {

    89         if (found == expected)

    90             System.err.println(found + " " + name + " found, as expected.");

    91         else {

    92             System.err.println("incorrect number of " + name + " found.");

    93             System.err.println("expected: " + expected);

    94             System.err.println("   found: " + found);

    95             throw new IllegalStateException("test failed");

    96         }

    97     }

    99     private static class LogTester extends TreeScanner {

   100         LogTester(Log log, java.util.Map<JCTree, Integer> endPositions) {

   101             this.log = log;

   102             this.endPositions = endPositions;

   103         }

   105         public void visitIf(JCTree.JCIf tree) {

   106             JCDiagnostic.DiagnosticPosition nil = null;

   107             // generate dummy messages to exercise the log API

   108             log.error("not.stmt");

   109             log.error(tree.pos, "not.stmt");

   110             log.error(tree.pos(), "not.stmt");

   111             log.error(nil, "not.stmt");

   113             log.warning("div.zero");

   114             log.warning(tree.pos, "div.zero");

   115             log.warning(tree.pos(), "div.zero");

   116             log.warning(nil, "div.zero");

   117         }

   119         private Log log;

   120         private java.util.Map<JCTree, Integer> endPositions;

   121     }

   123     private static class StringJavaFileObject extends SimpleJavaFileObject {

   124         StringJavaFileObject(String name, String text) {

   125             super(URI.create(name), JavaFileObject.Kind.SOURCE);

   126             this.text = text;

   127         }

   128         public CharSequence getCharContent(boolean b) {

   129             return text;

   130         }

   131         public InputStream openInputStream() {

   132             throw new UnsupportedOperationException();

   133         }

   134         public OutputStream openOutputStream() {

   135             throw new UnsupportedOperationException();

   136         }

   137         private String text;

   138     }

   139 }

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