/*

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 *

 * This code is free software; you can redistribute it and/or modify it

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 * 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.

 *

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/*

 * @test

 * @summary Test the NoTypes: VOID, PACKAGE, NONE

 * @author  Scott Seligman

 * @library ../../../lib

 * @build JavacTestingAbstractProcessor

 * @compile -g NoTypes.java

 * @compile -processor NoTypes -proc:only NoTypes.java

 */

import java.util.Set;

import javax.annotation.processing.*;

import javax.lang.model.SourceVersion;

import javax.lang.model.element.*;

import javax.lang.model.type.*;

import javax.lang.model.util.*;

import static javax.lang.model.type.TypeKind.*;

public class NoTypes extends JavacTestingAbstractProcessor {

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

                           RoundEnvironment round) {

        if (!round.processingOver())

            doit(annoTypes, round);

        return true;

    }

    private void doit(Set<? extends TypeElement> annoTypes,

                      RoundEnvironment round) {

        // The superclass of Object is NONE.

        TypeElement object = elements.getTypeElement("java.lang.Object");

        verifyKind(NONE, object.getSuperclass());

        // The enclosing type of a top-level class is NONE

        verifyKind(NONE, ((DeclaredType)object.asType()).getEnclosingType());

        // The superclass of an interface is NONE.

        TypeElement i = elements.getTypeElement("NoTypes.I");

        verifyKind(NONE, i.getSuperclass());

        // The type of a package is PACKAGE.

        Element pkg = i.getEnclosingElement().getEnclosingElement();

        verifyKind(PACKAGE, pkg.asType());

        // A package isn't enclosed.  Not yet, anyway.

        if (pkg.getEnclosingElement() != null)

            throw new AssertionError();

        verifyKind(VOID, types.getNoType(VOID));

        verifyKind(NONE, types.getNoType(NONE));

        // The return type of a constructor or void method is VOID.

            @Override

            public Void visitExecutable(ExecutableElement e, Void p) {

                verifyKind(VOID, e.getReturnType());

                ExecutableType t = (ExecutableType) e.asType();

                verifyKind(VOID, t.getReturnType());

                return null;

            }

        }

        TypeElement c = elements.getTypeElement("NoTypes.C");

        new Scanner().scan(c);

    }

    /**

     */

    private void verifyKind(TypeKind kind, TypeMirror type) {

            @Override

            public TypeKind visitNoTypeAsVoid(NoType t, Void p) {

                return VOID;

            }

            @Override

            public TypeKind visitNoTypeAsPackage(NoType t, Void p) {

                return PACKAGE;

            }

            @Override

            public TypeKind visitNoTypeAsNone(NoType t, Void p) {

                return NONE;

            }

        }

        if (kind != type.getKind() || kind != new Vis().visit(type))

            throw new AssertionError();

    }

    // Fodder for the tests

    interface I {

    }

    class C {

        C() {}

        void m() {}

    }

}