/*
 * Copyright (c) 2014, 2014, 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.
 */
package com.oracle.graal.nodes.calc;

import com.oracle.graal.api.meta.*;
import com.oracle.graal.compiler.common.type.ArithmeticOpTable.UnaryOp;
import com.oracle.graal.graph.spi.*;
import com.oracle.graal.nodeinfo.*;
import com.oracle.graal.nodes.*;
import com.oracle.graal.nodes.spi.*;

@NodeInfo
public abstract class UnaryArithmeticNode extends UnaryNode implements ArithmeticLIRLowerable {

    protected UnaryOp op;

    protected UnaryArithmeticNode(UnaryOp op, ValueNode value) {
        super(op.foldStamp(value.stamp()), value);
        this.op = op;
    }

    public UnaryOp getOp() {
        return op;
    }

    public Constant evalConst(Constant... inputs) {
        assert inputs.length == 1;
        return op.foldConstant(inputs[0]);
    }

    @Override
    public boolean inferStamp() {
        return updateStamp(op.foldStamp(getValue().stamp()));
    }

    @Override
    public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) {
        if (forValue.isConstant()) {
            return ConstantNode.forPrimitive(stamp(), op.foldConstant(forValue.asConstant()));
        }
        return this;
    }
}