/*
* Copyright (c) 2011-2015 EPFL DATA Laboratory
* Copyright (c) 2014-2015 The Squall Collaboration (see NOTICE)
*
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ch.epfl.data.squall.expressions;
import java.io.Serializable;
import java.util.List;
import ch.epfl.data.squall.types.Type;
import ch.epfl.data.squall.visitors.ValueExpressionVisitor;
public interface ValueExpression<T extends Comparable<T>> extends Serializable {
public void accept(ValueExpressionVisitor vev);
// matt...
public void changeValues(int i, ValueExpression<T> newExpr);
public T eval(List<String> tuple);
public String evalString(List<String> tuple);
// not ValueExpression<T> because inside might be other type(as in
// IntegerYearFromDate)
public List<ValueExpression> getInnerExpressions();
public Type getType();
public void inverseNumber();
public boolean isNegative();
}