/*

 * Copyright (c) 2010, 2015, 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 6996914 7020044 8062373

 * @summary  Diamond inference: problem when accessing protected constructor

 * @run main T6996914a

 */

import com.sun.source.util.JavacTask;

import java.net.URI;

import java.util.Arrays;

import javax.tools.Diagnostic;

import javax.tools.DiagnosticListener;

import javax.tools.JavaCompiler;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

import javax.tools.ToolProvider;

public class T6996914a {

    enum PackageKind {

        DEFAULT("", ""),

        A("package a;", "import a.*;");

        String pkgDecl;

        String importDecl;

        PackageKind(String pkgDecl, String importDecl) {

            this.pkgDecl = pkgDecl;

            this.importDecl = importDecl;

        }

    }

    enum DiamondKind {

        STANDARD("new Foo<>();"),

        ANON("new Foo<>() {};");

        String expr;

        DiamondKind(String expr) {

            this.expr = expr;

        }

    }

    enum ConstructorKind {

        PACKAGE(""),

        PROTECTED("protected"),

        PRIVATE("private"),

        PUBLIC("public");

        String mod;

        ConstructorKind(String mod) {

            this.mod = mod;

        }

    }

    static class FooClass extends SimpleJavaFileObject {

        final static String sourceStub =

                        "#P\n" +

                        "public class Foo<X> {\n" +

                        "  #M Foo() {}\n" +

                        "}\n";

        String source;

        public FooClass(PackageKind pk, ConstructorKind ck) {

            super(URI.create("myfo:/" + (pk != PackageKind.DEFAULT ? "a/Foo.java" : "Foo.java")),

                    JavaFileObject.Kind.SOURCE);

            source = sourceStub.replace("#P", pk.pkgDecl).replace("#M", ck.mod);

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return source;

        }

    }

    static class ClientClass extends SimpleJavaFileObject {

        final static String sourceStub =

                        "#I\n" +

                        "class Test {\n" +

                        "  Foo<String> fs = #D\n" +

                        "}\n";

        String source;

        public ClientClass(PackageKind pk, DiamondKind dk) {

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

            source = sourceStub.replace("#I", pk.importDecl).replace("#D", dk.expr);

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return source;

        }

    }

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

        for (PackageKind pk : PackageKind.values()) {

            for (ConstructorKind ck : ConstructorKind.values()) {

                for (DiamondKind dk : DiamondKind.values()) {

                    compileAndCheck(pk, ck, dk);

                }

            }

        }

    }

    static void compileAndCheck(PackageKind pk, ConstructorKind ck, DiamondKind dk) throws Exception {

        FooClass foo = new FooClass(pk, ck);

        ClientClass client = new ClientClass(pk, dk);

        final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();

        ErrorListener el = new ErrorListener();

        JavacTask ct = (JavacTask)tool.getTask(null, null, el,

                null, null, Arrays.asList(foo, client));

        ct.analyze();

        if (el.errors > 0 == check(pk, ck, dk)) {

            String msg = el.errors > 0 ?

                "Error compiling files" :

                "No error when compiling files";

            throw new AssertionError(msg + ": \n" + foo.source + "\n" + client.source);

        }

    }

    static boolean check(PackageKind pk, ConstructorKind ck, DiamondKind dk) {

        switch (pk) {

            case A: return ck == ConstructorKind.PUBLIC ||

                    (ck  == ConstructorKind.PROTECTED && dk == DiamondKind.ANON);

            case DEFAULT: return ck != ConstructorKind.PRIVATE;

            default: throw new AssertionError("Unknown package kind");

        }

    }

    /**

     * DiagnosticListener to count any errors that occur

     */

    private static class ErrorListener implements DiagnosticListener<JavaFileObject> {

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

            switch (diagnostic.getKind()) {

                case ERROR:

                    errors++;

            }

        }

        int errors;

    }

}