langtools/test/tools/javap/T6824493.java
author katleman
Thu, 21 Aug 2014 14:16:14 -0700
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child 30730 d3ce7619db2c
permissions -rw-r--r--
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/*
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 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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import java.io.*;
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import java.util.*;
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/*
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 * @test
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 * @bug 6824493
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 * @summary experimental support for additional info for instructions
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 * @compile -g T6824493.java
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 * @run main T6824493
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 */
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public class T6824493 {
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    public static void main(String... args) {
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        new T6824493().run();
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    }
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    void run() {
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        // for each of the options, we run javap and check for some
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        // marker strings in the output that generally indicate the
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        // presence of the expected output, without being as specific
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        // as a full golden file test.
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        test("-XDdetails:source",
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            "for (int i = 0; i < 10; i++) {",
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            "System.out.println(s + i);");
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        test("-XDdetails:tryBlocks",
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                "try[0]",
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                "end try[0]",
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                "catch[0]");
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        test("-XDdetails:stackMaps",
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                "StackMap locals:  this java/lang/String int",
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                "StackMap stack:  java/lang/Throwable");
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        test("-XDdetails:localVariables",
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                "start local 3 // java.util.List list",
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                "end local 3 // java.util.List list");
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        test("-XDdetails:localVariableTypes",
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                "start generic local 3 // java.util.List<java.lang.String> list",
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                "end generic local 3 // java.util.List<java.lang.String> list");
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        if (errors > 0)
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            throw new Error(errors + " errors found");
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    }
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    void test(String option, String... expect) {
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        String[] args = {
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            "-c",
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            "-classpath",
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            testSrc + File.pathSeparator + testClasses,
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            option,
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            "Test"
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        };
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        StringWriter sw = new StringWriter();
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        PrintWriter pw = new PrintWriter(sw);
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        int rc = com.sun.tools.javap.Main.run(args, pw);
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        if (rc != 0) {
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            error("unexpected return code from javap: " + rc);
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            return;
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        }
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        String out = sw.toString();
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        System.out.println(out);
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        for (String e: expect) {
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            if (!out.contains(e))
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                error("Not found: " + e);
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        }
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    }
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    void error(String msg) {
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        System.err.println("Error: " + msg);
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        errors++;
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    }
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    private int errors;
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    private String testSrc = System.getProperty("test.src", ".");
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    private String testClasses = System.getProperty("test.classes", ".");
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}
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class Test {
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    void m(String s) {
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        for (int i = 0; i < 10; i++) {
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            try {
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                List<String> list = null;
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                System.out.println(s + i);
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            } catch (NullPointerException e) {
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                System.out.println("catch NPE");
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            } finally {
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                System.out.println("finally");
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            }
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        }
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    }
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}