gov.nasa.jpf.constraints.util.ExpressionRestrictor.java Source code

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Here is the source code for gov.nasa.jpf.constraints.util.ExpressionRestrictor.java

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/*
 * Copyright (C) 2015, United States Government, as represented by the 
 * Administrator of the National Aeronautics and Space Administration.
 * All rights reserved.
 *
 * The PSYCO: A Predicate-based Symbolic Compositional Reasoning environment 
 * platform is 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 gov.nasa.jpf.constraints.util;

import gov.nasa.jpf.constraints.api.Expression;
import gov.nasa.jpf.constraints.api.Variable;

import java.util.Set;

import com.google.common.base.Predicates;

@Deprecated
@SuppressWarnings({ "rawtypes", "unchecked" })
public class ExpressionRestrictor {

    private final Set<Variable> variables;
    private boolean mixedParams = false;

    public ExpressionRestrictor(Set<Variable> variables) {
        this.variables = variables;
    }

    public Expression restrict(Expression e) {
        Expression result = e;
        try {
            result = ExpressionUtil.restrict(result, Predicates.in(variables));
        } catch (MixedParamsException ex) {
            mixedParams = true;
        }
        return result;
    }

    public boolean hasMixedParameters() {
        return mixedParams;
    }

}