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

 /*

  * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 /*

  * @test

  * @bug 6304912

  * @summary unit test for Log

  */

 import java.io.InputStream;

 import java.io.IOException;

 import java.io.OutputStream;

 import java.net.URI;

 import javax.tools.JavaFileObject;

 import javax.tools.SimpleJavaFileObject;

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

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

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

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

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

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

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

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

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

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

 public class TestLog

 {

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

         test(false);

         test(true);

     }

     static void test(boolean genEndPos) throws IOException {

         Context context = new Context();

         Options options = Options.instance(context);

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

         Log log = Log.instance(context);

         log.multipleErrors = true;

         JavacFileManager.preRegister(context);

         ParserFactory pfac = ParserFactory.instance(context);

         final String text =

               "public class Foo {\n"

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

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

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

             + "    else\n"

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

             + "  }\n"

             + "}\n";

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

         log.useSource(fo);

         CharSequence cs = fo.getCharContent(true);

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

         JCTree.JCCompilationUnit tree = parser.parseCompilationUnit();

         log.setEndPosTable(fo, tree.endPositions);

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

         ts.scan(tree);

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

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

     }

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

         if (found == expected)

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

         else {

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

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

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

             throw new IllegalStateException("test failed");

         }

     }

     private static class LogTester extends TreeScanner {

         LogTester(Log log, EndPosTable endPosTable) {

             this.log = log;

             this.endPosTable = endPosTable;

         }

         public void visitIf(JCTree.JCIf tree) {

             JCDiagnostic.DiagnosticPosition nil = null;

             // generate dummy messages to exercise the log API

             log.error("not.stmt");

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

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

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

             log.warning("div.zero");

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

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

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

         }

         private Log log;

         private EndPosTable endPosTable;

     }

     private static class StringJavaFileObject extends SimpleJavaFileObject {

         StringJavaFileObject(String name, String text) {

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

             this.text = text;

         }

         public CharSequence getCharContent(boolean b) {

             return text;

         }

         public InputStream openInputStream() {

             throw new UnsupportedOperationException();

         }

         public OutputStream openOutputStream() {

             throw new UnsupportedOperationException();

         }

         private String text;

     }

 }