/*
 * Copyright (c) 2020, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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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package org.graalvm.compiler.nodes.java;

import org.graalvm.compiler.core.common.type.AbstractPointerStamp;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.graph.spi.Simplifiable;
import org.graalvm.compiler.graph.spi.SimplifierTool;
import org.graalvm.compiler.nodeinfo.NodeCycles;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodeinfo.NodeSize;
import org.graalvm.compiler.nodes.NodeView;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.WithExceptionNode;
import org.graalvm.compiler.nodes.spi.Lowerable;

This node represents the class type checks for a DynamicNewInstanceNode and throws any needed exceptions. An exception can occur if the provided clazz is null or of a primitive, array, interface, abstract, or Class type. /**
 * This node represents the class type checks for a {@link DynamicNewInstanceNode} and throws any
 * needed exceptions. An exception can occur if the provided
 * {@link ValidateNewInstanceClassNode#clazz} is null or of a primitive, array, interface, abstract,
 * or {@link Class} type.
 */
@NodeInfo(size = NodeSize.SIZE_8, cycles = NodeCycles.CYCLES_8, cyclesRationale = "Performs multiple checks.")
public class ValidateNewInstanceClassNode extends WithExceptionNode implements Lowerable, Simplifiable {

    @Input ValueNode clazz;

    
Class pointer to class.class needs to be exposed earlier than this node is lowered so that it
can be replaced by the AOT machinery. If it's not needed for lowering this input can be
ignored.
/**
     * Class pointer to class.class needs to be exposed earlier than this node is lowered so that it
     * can be replaced by the AOT machinery. If it's not needed for lowering this input can be
     * ignored.
     */
    @OptionalInput ValueNode classClass;

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

    public ValidateNewInstanceClassNode(ValueNode clazz) {
        super(TYPE, AbstractPointerStamp.pointerNonNull(clazz.stamp(NodeView.DEFAULT)));
        this.clazz = clazz;
    }

    public ValueNode getInstanceType() {
        return clazz;
    }

    public ValueNode getClassClass() {
        return classClass;
    }

    public void setClassClass(ValueNode newClassClass) {
        updateUsages(classClass, newClassClass);
        classClass = newClassClass;
    }

    @Override
    public void simplify(SimplifierTool tool) {
        if (DynamicNewInstanceNode.canConvertToNonDynamic(clazz, tool)) {
            killExceptionEdge();
            tool.addToWorkList(usages());
            replaceAtUsages(clazz);
            graph().removeSplit(this, next());
        }
    }
}