langtools/test/tools/javac/multicatch/Pos04.java
author mcimadamore
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/*
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 * Copyright 2010 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 */
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/*
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 * @test
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 * @bug 6943289
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 * @summary Project Coin: Improved Exception Handling for Java (aka 'multicatch')
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 */
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import java.lang.annotation.*;
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public class Pos04 {
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    enum ExceptionKind {
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        A(1),
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        B(2),
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        C(1);
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        int expectedValue;
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        ExceptionKind(int expectedValue) {
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            this.expectedValue = expectedValue;
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        }
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    }
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    @Retention(RetentionPolicy.RUNTIME)
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    @interface CatchNumber {
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       int value();
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    }
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    @CatchNumber(1)
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    static class A extends Exception { }
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    @CatchNumber(2)
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    static class B extends Exception { }
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    @CatchNumber(1)
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    static class C extends Exception { }
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    static int sum = 0;
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    public static void main(String[] args) {
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        for (ExceptionKind ekind : ExceptionKind.values()) {
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            test(ekind);
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        }
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        if (sum != 4) {
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            throw new Error("bad checksum - expected:4, found:" + sum);
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        }
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    }
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    public static void test(ExceptionKind ekind) {
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        try {
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            switch(ekind) {
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                case A: throw new A();
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                case B: throw new B();
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                case C: throw new C();
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            }
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        } catch(final A | C ex) {// Catch number 1
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            CatchNumber catchNumber = ex.getClass().getAnnotation(CatchNumber.class);
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            if (catchNumber == null || catchNumber.value() != ekind.expectedValue) {
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                throw new Error("was expecting 1 - got " + catchNumber);
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            }
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            sum += catchNumber.value();
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        } catch (final B ex) { // Catch number 2
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            CatchNumber catchNumber = ex.getClass().getAnnotation(CatchNumber.class);
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            if (catchNumber == null || catchNumber.value() != ekind.expectedValue) {
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                throw new Error("was expecting 2 - got " + catchNumber);
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            }
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            sum += catchNumber.value();
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        }
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    }
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}