/*

 * Copyright (c) 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

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 * questions.

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 */

/*

 * @test

 * @bug 8136421

 * @library /testlibrary /test/lib /

 * @compile ../common/CompilerToVMHelper.java

 * @build compiler.jvmci.compilerToVM.ResolveConstantInPoolTest

 * @run main ClassFileInstaller jdk.vm.ci.hotspot.CompilerToVMHelper

 * @run main/othervm -Xbootclasspath/a:.

 *                   -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

 *                   compiler.jvmci.compilerToVM.ResolveConstantInPoolTest

 */

package compiler.jvmci.compilerToVM;

import java.lang.invoke.MethodHandle;

import java.lang.invoke.MethodType;

import java.util.HashMap;

import java.util.Map;

import jdk.vm.ci.hotspot.CompilerToVMHelper;

import jdk.test.lib.Asserts;

import sun.reflect.ConstantPool;

/**

 * Test for {@code compiler.jvmci.CompilerToVM.resolveConstantInPool} method

 */

public class ResolveConstantInPoolTest {

    public static void main(String[] args) throws Exception {

        Map<ConstantPoolTestsHelper.ConstantTypes,

                ConstantPoolTestCase.Validator> typeTests = new HashMap<>(2);

        typeTests.put(ConstantPoolTestsHelper.ConstantTypes.CONSTANT_METHODHANDLE,

                ResolveConstantInPoolTest::validateMethodHandle);

        typeTests.put(ConstantPoolTestsHelper.ConstantTypes.CONSTANT_METHODTYPE,

                ResolveConstantInPoolTest::validateMethodType);

        ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests);

        testCase.test();

    }

    private static void validateMethodHandle(

            jdk.vm.ci.meta.ConstantPool constantPoolCTVM,

            ConstantPool constantPoolSS,

            ConstantPoolTestsHelper.DummyClasses dummyClass, int index) {

        Object constantInPool = CompilerToVMHelper

                .resolveConstantInPool(constantPoolCTVM, index);

        if (!(constantInPool instanceof MethodHandle)) {

            String msg = String.format(

                    "Wrong constant pool entry accessed by index"

                            + " %d: %s, but should be subclass of %s",

                    index + 1, constantInPool.getClass(),

                    MethodHandle.class.getName());

            throw new AssertionError(msg);

        }

    }

    private static void validateMethodType(

            jdk.vm.ci.meta.ConstantPool constantPoolCTVM,

            ConstantPool constantPoolSS,

            ConstantPoolTestsHelper.DummyClasses dummyClass, int index) {

        Object constantInPool = CompilerToVMHelper

                .resolveConstantInPool(constantPoolCTVM, index);

        Class mtToVerify = constantInPool.getClass();

        Class mtToRefer = MethodType.class;

        String msg = String.format("Wrong %s accessed by constant pool index"

                            + " %d: %s, but should be %s", "method type class",

                            index, mtToVerify, mtToRefer);

        Asserts.assertEQ(mtToRefer, mtToVerify, msg);

    }

}