/*
 * Copyright (c) 2011, 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 com.oracle.graal.compiler.tests;

import java.lang.reflect.*;

import org.junit.*;

import com.oracle.graal.api.meta.*;
import com.oracle.graal.api.meta.RiTypeProfile.*;
import com.oracle.graal.nodes.*;

/**
 * Base class for checkcast and instanceof test classes.
 */
public abstract class TypeCheckTest extends GraphTest {

    protected abstract void replaceProfile(StructuredGraph graph, RiTypeProfile profile);

    private RiCompiledMethod compile(Method method, RiTypeProfile profile) {
        final StructuredGraph graph = parse(method);
        replaceProfile(graph, profile);
        return compile(runtime.getRiMethod(method), graph);
    }

    protected RiTypeProfile profile(Class... types) {
        if (types.length == 0) {
            return null;
        }
        ProfiledType[] ptypes = new ProfiledType[types.length];
        for (int i = 0; i < types.length; i++) {
            ptypes[i] = new ProfiledType(runtime.getType(types[i]), 1.0D / types.length);
        }
        return new RiTypeProfile(0.0D, ptypes);
    }

    protected void test(String name, RiTypeProfile profile, Object... args) {
        Method method = getMethod(name);
        Object expect = null;
        Throwable exception = null;
        try {
            // This gives us both the expected return value as well as ensuring that the method to be compiled is fully resolved
            expect = method.invoke(null, args);
        } catch (InvocationTargetException e) {
            exception = e.getTargetException();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        RiCompiledMethod compiledMethod = compile(method, profile);
        compiledMethod.method();

        if (exception != null) {
            try {
                compiledMethod.executeVarargs(args);
                Assert.fail("expected " + exception);
            } catch (Throwable e) {
                Assert.assertEquals(exception.getClass(), e.getClass());
            }
        } else {
            Object actual = compiledMethod.executeVarargs(args);
            Assert.assertEquals(expect, actual);
        }
    }
}