org.sosy_lab.cpachecker.util.predicates.z3.matching.SmtFunctionApplicationPattern.java Source code

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Here is the source code for org.sosy_lab.cpachecker.util.predicates.z3.matching.SmtFunctionApplicationPattern.java

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/*
 *  CPAchecker is a tool for configurable software verification.
 *  This file is part of CPAchecker.
 *
 *  Copyright (C) 2007-2014  Dirk Beyer
 *  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.
 *
 *
 *  CPAchecker web page:
 *    http://cpachecker.sosy-lab.org
 */
package org.sosy_lab.cpachecker.util.predicates.z3.matching;

import java.util.Iterator;
import java.util.List;

import org.sosy_lab.cpachecker.util.predicates.z3.matching.SmtAstPatternSelection.LogicalConnection;

import com.google.common.base.Optional;
import com.google.common.collect.Lists;

public class SmtFunctionApplicationPattern implements SmtAstPattern {

    public final Optional<Comparable<?>> function;
    public final Optional<String> bindMatchTo;
    public final SmtAstPatternSelection argumentPatterns;

    public SmtFunctionApplicationPattern(Optional<Comparable<?>> pFunction, Optional<String> pBindMatchTo,
            SmtAstPatternSelection pArgumentPatterns) {

        this.function = pFunction;
        this.bindMatchTo = pBindMatchTo;
        this.argumentPatterns = pArgumentPatterns;
    }

    @Override
    public Optional<String> getBindMatchTo() {
        return bindMatchTo;
    }

    public LogicalConnection getArgumentsLogic() {
        return argumentPatterns.getRelationship();
    }

    public int getArgumentPatternCount() {
        return argumentPatterns.getPatterns().size();
    }

    public Iterator<SmtAstPattern> getArgumentPatternIterator(boolean reversed) {
        return getArgumentPatterns(reversed).iterator();
    }

    public List<SmtAstPattern> getArgumentPatterns(boolean reversed) {
        if (reversed) {
            return Lists.reverse(argumentPatterns.getPatterns());
        }
        return argumentPatterns.getPatterns();
    }

    @Override
    public String toString() {
        String functionText = function.isPresent() ? function.get().toString() : "?";
        String bindToText = bindMatchTo.isPresent() ? bindMatchTo.get().toString() : "-";
        return String.format("%s | %s | %d args", functionText, bindToText, argumentPatterns.getPatterns().size());
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((argumentPatterns == null) ? 0 : argumentPatterns.hashCode());
        result = prime * result + ((bindMatchTo == null) ? 0 : bindMatchTo.hashCode());
        result = prime * result + ((function == null) ? 0 : function.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof SmtFunctionApplicationPattern)) {
            return false;
        }
        SmtFunctionApplicationPattern other = (SmtFunctionApplicationPattern) obj;
        if (argumentPatterns == null) {
            if (other.argumentPatterns != null) {
                return false;
            }
        } else if (!argumentPatterns.equals(other.argumentPatterns)) {
            return false;
        }
        if (bindMatchTo == null) {
            if (other.bindMatchTo != null) {
                return false;
            }
        } else if (!bindMatchTo.equals(other.bindMatchTo)) {
            return false;
        }
        if (function == null) {
            if (other.function != null) {
                return false;
            }
        } else if (!function.equals(other.function)) {
            return false;
        }
        return true;
    }

}