/*

 * Copyright (c) 2016, 2018, 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 8138708

 * @requires vm.jvmci

 * @library /test/lib /

 * @library ../common/patches

 * @modules java.base/jdk.internal.access

 *          java.base/jdk.internal.reflect

 *          java.base/jdk.internal.org.objectweb.asm

 *          java.base/jdk.internal.org.objectweb.asm.tree

 *          jdk.internal.vm.ci/jdk.vm.ci.hotspot

 *          jdk.internal.vm.ci/jdk.vm.ci.runtime

 *          jdk.internal.vm.ci/jdk.vm.ci.meta

 *

 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper

 * @build sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                                sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

 *                   -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

 *                   -Djvmci.Compiler=null

 *                   compiler.jvmci.compilerToVM.LookupSignatureInPoolTest

 */

package compiler.jvmci.compilerToVM;

import compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes;

import compiler.jvmci.compilerToVM.ConstantPoolTestCase.TestedCPEntry;

import compiler.jvmci.compilerToVM.ConstantPoolTestCase.Validator;

import compiler.jvmci.compilerToVM.ConstantPoolTestsHelper.DummyClasses;

import jdk.test.lib.Asserts;

import jdk.vm.ci.hotspot.CompilerToVMHelper;

import jdk.vm.ci.meta.ConstantPool;

import java.util.HashMap;

import java.util.Map;

import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_FIELDREF;

import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_INTERFACEMETHODREF;

import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_INVOKEDYNAMIC;

import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_METHODREF;

/**

 * Test for {@code jdk.vm.ci.hotspot.CompilerToVM.lookupSignatureInPool} method

 */

public class LookupSignatureInPoolTest {

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

        Map<ConstantTypes, Validator> typeTests = new HashMap<>();

        typeTests.put(CONSTANT_METHODREF, LookupSignatureInPoolTest::validate);

        typeTests.put(CONSTANT_INTERFACEMETHODREF, LookupSignatureInPoolTest::validate);

        typeTests.put(CONSTANT_FIELDREF, LookupSignatureInPoolTest::validate);

        typeTests.put(CONSTANT_INVOKEDYNAMIC, LookupSignatureInPoolTest::validate);

        ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests);

        testCase.test();

        // The next "Class.forName" and repeating "testCase.test()"

        // are here for the following reason.

        // The first test run is without dummy class initialization,

        // which means no constant pool cache exists.

        // The second run is with initialized class (with constant pool cache available).

        // Some CompilerToVM methods require different input

        // depending on whether CP cache exists or not.

        for (DummyClasses dummy : DummyClasses.values()) {

            Class.forName(dummy.klass.getName());

        }

        testCase.test();

    }

    private static void validate(ConstantPool constantPoolCTVM,

                                 ConstantTypes cpType,

                                 DummyClasses dummyClass,

                                 int cpi) {

        TestedCPEntry entry = cpType.getTestedCPEntry(dummyClass, cpi);

        if (entry == null) {

            return;

        }

        int index = cpi;

        String cached = "";

        int cpci = dummyClass.getCPCacheIndex(cpi);

        if (cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) {

            index = cpci;

            cached = "cached ";

        }

        String sigToVerify = CompilerToVMHelper.lookupSignatureInPool(constantPoolCTVM, index);

        String sigToRefer = entry.type;

        String msg = String.format("Wrong signature accessed by %sconstant pool index %d",

                                   cached,

                                   index);

        Asserts.assertEQ(sigToVerify, sigToRefer, msg);

    }

}