/*

 * Copyright (c) 2006, 2019, 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 8222378

 * @summary Test that ProcessingEnvironment.isPreviewEnabled works properly

 * @library /tools/javac/lib

 * @modules java.compiler

 * @build   JavacTestingAbstractProcessor

 * @compile TestPreviewEnabled.java

 * @compile -processor TestPreviewEnabled -proc:only -source ${jdk.version} -AExpectedPreview=false                  TestSourceVersion.java

 * @compile -processor TestPreviewEnabled -proc:only -source ${jdk.version} -AExpectedPreview=true  --enable-preview TestSourceVersion.java

 */

import java.util.Locale;

import java.util.Map;

import java.util.Set;

import javax.lang.model.SourceVersion;

import javax.lang.model.element.TypeElement;

import javax.annotation.processing.*;

import javax.lang.model.util.*;

/**

 * This processor checks that ProcessingEnvironment.isPreviewEnabled

 * is consistent with the compiler options.

 */

@SupportedOptions("ExpectedPreview")

public class TestPreviewEnabled extends JavacTestingAbstractProcessor {

    public boolean process(Set<? extends TypeElement> annotations,

                           RoundEnvironment roundEnvironment) {

        if (!roundEnvironment.processingOver()) {

            boolean expectedPreview =

                Boolean.valueOf(processingEnv.getOptions().get("ExpectedPreview"));

            boolean actualPreview =  processingEnv.isPreviewEnabled();

            System.out.println("Expected PreviewEnabled: " + expectedPreview +

                               "\n  actual PreviewEnabled: "  + actualPreview);

            if (expectedPreview != actualPreview)

                throw new RuntimeException();

            if (expectedPreview) {

                // Create a ProcessingEnvironment that uses the

                // default implemention of isPreviewEnabled.

                ProcessingEnvironment testEnv = new ProcessingEnvironment() {

                        @Override public Elements getElementUtils() {return null;}

                        @Override public Filer getFiler() {return null;}

                        @Override public Locale getLocale() {return null;}

                        @Override public Messager getMessager() {return null;}

                        @Override public Map<String,String> getOptions() {return null;}

                        @Override public SourceVersion getSourceVersion() {return null;}

                        @Override public Types getTypeUtils() {return null;}

                    };

                if (testEnv.isPreviewEnabled()) {

                    throw new RuntimeException("Bad true return value from default " +

                                               "ProcessingEnvironment.isPreviewEnabled.");

                }

            }

        }

        return true;

    }

}