test/compiler/types/correctness/scenarios/CheckCast.java

/*
 * Copyright (c) 2014, 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.
 */

package scenarios;

import com.oracle.java.testlibrary.Asserts;
import hierarchies.TypeHierarchy;

import java.util.Objects;

/**
 * Checkcast scenario
 * @param <T> profiling parameter
 */
public class CheckCast<T extends TypeHierarchy.I> extends Scenario<T, Integer> {
    public CheckCast(ProfilingType profilingType, TypeHierarchy<? extends T, ? extends T> hierarchy) {
        super("CheckCast", profilingType, hierarchy);
    }

    /**
     * Returns type profiling.
     * @param obj is a profiled parameter for the test
     * @return parameter casted to the type R
     */
    @Override
    public Integer run(T obj) {
        switch (profilingType) {
            case RETURN:
                T t = collectReturnType(obj);
                if (t != null) {
                    return t.m();
                }
                return null;
            case ARGUMENTS:
                field = obj;
                if (field != null) {
                    return field.m();
                }
                return null;
            case PARAMETERS:
                if (obj != null) {
                    return obj.m();
                }
                return null;
        }
        throw new RuntimeException("Should not reach here");
    }

    @Override
    public void check(Integer result, T orig) {
        if (result != null || orig != null) {
            Objects.requireNonNull(result);
            Objects.requireNonNull(orig);
            Asserts.assertEquals(result, orig.m(), "Results mismatch");
        }
    }
}