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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.hotspot.nodes.aot;

import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.graph.spi.Canonicalizable;
import org.graalvm.compiler.graph.spi.CanonicalizerTool;
import org.graalvm.compiler.hotspot.replacements.EncodedSymbolConstant;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.ConstantNode;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.calc.FloatingNode;
import org.graalvm.compiler.nodes.util.GraphUtil;
import org.graalvm.compiler.word.Word;

import jdk.vm.ci.meta.Constant;

@NodeInfo
public final class EncodedSymbolNode extends FloatingNode implements Canonicalizable {

    public static final NodeClass<EncodedSymbolNode> TYPE = NodeClass.create(EncodedSymbolNode.class);

    @OptionalInput protected ValueNode value;

    public EncodedSymbolNode(ValueNode value) {
        super(TYPE, null);
        assert value != null;
        this.value = value;
    }

    @Override
    public Node canonical(CanonicalizerTool tool) {
        if (value != null) {
            Constant constant = GraphUtil.foldIfConstantAndRemove(this, value);
            if (constant != null) {
                return new ConstantNode(new EncodedSymbolConstant(constant), StampFactory.pointer());
            }
        }
        return this;
    }

    @NodeIntrinsic(setStampFromReturnType = true)
    public static native Word encode(Object constant);
}