hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.test/src/org/graalvm/compiler/lir/test/GenericValueMapTest.java

/*
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 * 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.
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package org.graalvm.compiler.lir.test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;

import org.junit.Test;

import org.graalvm.compiler.core.common.LIRKind;
import org.graalvm.compiler.lir.Variable;
import org.graalvm.compiler.lir.util.GenericValueMap;

import jdk.vm.ci.code.Register;
import jdk.vm.ci.code.Register.RegisterCategory;
import jdk.vm.ci.code.RegisterValue;
import jdk.vm.ci.meta.PlatformKind;

public class GenericValueMapTest {

    private enum DummyKind implements PlatformKind {
        Long;

        private EnumKey<DummyKind> key = new EnumKey<>(this);

        @Override
        public Key getKey() {
            return key;
        }

        @Override
        public int getSizeInBytes() {
            return 8;
        }

        @Override
        public int getVectorLength() {
            return 1;
        }

        @Override
        public char getTypeChar() {
            return 'l';
        }
    }

    @Test
    public void run0() {
        RegisterCategory cat = new RegisterCategory("regs");

        RegisterValue reg = new Register(0, 0, "reg0", cat).asValue();
        Variable var = new Variable(LIRKind.value(DummyKind.Long), 0);
        Object obj0 = new Object();
        Object obj1 = new Object();

        GenericValueMap<Object> map = new GenericValueMap<>();

        assertNull(map.get(reg));
        assertNull(map.get(var));

        map.put(reg, obj0);
        map.put(var, obj1);

        assertEquals(obj0, map.get(reg));
        assertEquals(obj1, map.get(var));

        map.remove(reg);
        map.remove(var);

        assertNull(map.get(reg));
        assertNull(map.get(var));

        map.put(reg, obj0);
        map.put(var, obj1);

        map.put(var, obj0);
        map.put(reg, obj1);

        assertEquals(obj1, map.get(reg));
        assertEquals(obj0, map.get(var));

        map.put(reg, null);
        map.put(var, null);

        assertNull(map.get(reg));
        assertNull(map.get(var));
    }
}