/*******************************************************************************
 * Copyright IBM Corp. and others 2020
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution
 * and is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License, v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception [1] and GNU General Public
 * License, version 2 with the OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] https://openjdk.org/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 *******************************************************************************/

#include "optimizer/abstractinterpreter/AbsValue.hpp"

TR::AbsValue *TR::AbsVPValue::clone(TR::Region &region) const
{
    TR::AbsVPValue *copy = new (region) TR::AbsVPValue(_vp, _constraint, _dataType, _paramPos);
    return copy;
}

TR::AbsValue *TR::AbsVPValue::merge(const TR::AbsValue *other)
{
    if (other == NULL)
        return this;

    if (_paramPos != other->getParameterPosition())
        _paramPos = -1;

    if (other->getDataType() != _dataType) {
        _dataType = TR::NoType;
        setToTop();
        return this;
    }

    if (isTop())
        return this;

    if (other->isTop()) {
        setToTop();
        return this;
    }

    TR::VPConstraint *mergedConstraint
        = _constraint->merge(static_cast<const TR::AbsVPValue *>(other)->getConstraint(), _vp);

    _constraint = mergedConstraint;
    return this;
}

void TR::AbsVPValue::print(TR::Compilation *comp) const
{
    traceMsg(comp, "AbsValue: Type: %s ", TR::DataType::getName(_dataType));

    if (_constraint) {
        traceMsg(comp, "Constraint: ");
        _constraint->print(_vp);
    } else {
        traceMsg(comp, "TOP (unknown) ");
    }

    traceMsg(comp, " param position: %d", _paramPos);
}
