/*

 * 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 7030606

 * @summary Project-coin: multi-catch types should be pairwise disjoint

 */

import java.net.URI;

import java.util.Arrays;

import javax.tools.Diagnostic;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

    enum Alternative {

        EXCEPTION("Exception"),

        RUNTIME_EXCEPTION("RuntimeException"),

        IO_EXCEPTION("java.io.IOException"),

        FILE_NOT_FOUND_EXCEPTION("java.io.FileNotFoundException"),

        ILLEGAL_ARGUMENT_EXCEPTION("IllegalArgumentException");

        String exceptionStr;

        private Alternative(String exceptionStr) {

            this.exceptionStr = exceptionStr;

        }

        static String makeDisjunctiveType(Alternative... alternatives) {

            StringBuilder buf = new StringBuilder();

            String sep = "";

            for (Alternative alternative : alternatives) {

                buf.append(sep);

                buf.append(alternative.exceptionStr);

                sep = "|";

            }

            return buf.toString();

        }

        boolean disjoint(Alternative that) {

            return disjoint[this.ordinal()][that.ordinal()];

        }

        static boolean[][] disjoint = {

            //                              Exception    RuntimeException    IOException    FileNotFoundException    IllegalArgumentException

            /*Exception*/                {  false,       false,              false,         false,                   false },

            /*RuntimeException*/         {  false,       false,              true,          true,                    false },

            /*IOException*/              {  false,       true,               false,         false,                   true },

            /*FileNotFoundException*/    {  false,       true,               false,         false,                   true },

            /*IllegalArgumentException*/ {  false,       false,              true,          true,                    false }

        };

    }

    enum Arity {

        ONE(1),

        TWO(2),

        THREE(3),

        FOUR(4),

        FIVE(5);

        int n;

        private Arity(int n) {

            this.n = n;

        }

    }

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

        for (Arity arity : Arity.values()) {

            for (Alternative a1 : Alternative.values()) {

                if (arity == Arity.ONE) {

                    continue;

                }

                for (Alternative a2 : Alternative.values()) {

                    if (arity == Arity.TWO) {

                        continue;

                    }

                    for (Alternative a3 : Alternative.values()) {

                        if (arity == Arity.THREE) {

                            continue;

                        }

                        for (Alternative a4 : Alternative.values()) {

                            if (arity == Arity.FOUR) {

                                continue;

                            }

                            for (Alternative a5 : Alternative.values()) {

                            }

                        }

                    }

                }

            }

        }

    }

    Alternative[] alternatives;

    JavaSource source;

    DiagnosticChecker diagChecker;

    DisjunctiveTypeWellFormednessTest(Alternative... alternatives) {

        this.alternatives = alternatives;

        this.source = new JavaSource();

        this.diagChecker = new DiagnosticChecker();

    }

    class JavaSource extends SimpleJavaFileObject {

        String template = "class Test {\n" +

                              "void test() {\n" +

                                 "try {} catch (#T e) {}\n" +

                              "}\n" +

                          "}\n";

        String source;

        public JavaSource() {

            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

            source = template.replace("#T", Alternative.makeDisjunctiveType(alternatives));

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return source;

        }

    }

                null, null, Arrays.asList(source));

        check();

    }

    void check() {

        int non_disjoint = 0;

        int i = 0;

        for (Alternative a1 : alternatives) {

            int j = 0;

            for (Alternative a2 : alternatives) {

                if (i == j) continue;

                if (!a1.disjoint(a2)) {

                    non_disjoint++;

                    break;

                }

                j++;

            }

            i++;

        }

        if (non_disjoint != diagChecker.errorsFound) {

            throw new Error("invalid diagnostics for source:\n" +

                source.getCharContent(true) +

                "\nFound errors: " + diagChecker.errorsFound +

                "\nExpected errors: " + non_disjoint);

        }

    }

    static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {

        int errorsFound;

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

            if (diagnostic.getKind() == Diagnostic.Kind.ERROR &&

                    diagnostic.getCode().startsWith("compiler.err.multicatch.types.must.be.disjoint")) {

                errorsFound++;

            }

        }

    }

}