/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.atlas.groovy;

/**
 * Base class for all expression that can have a caller.
 */
public abstract class AbstractFunctionExpression extends AbstractGroovyExpression {

    // null for global functions
    private GroovyExpression caller;
    private TraversalStepType type = TraversalStepType.NONE;

    public AbstractFunctionExpression(GroovyExpression target) {
        this.caller = target;
    }

    public AbstractFunctionExpression(TraversalStepType type, GroovyExpression target) {
        this.caller = target;
        this.type = type;
    }

    public  GroovyExpression getCaller() {
        return caller;
    }

    public void setCaller(GroovyExpression expr) {
        caller = expr;
    }


    public void setType(TraversalStepType type) {
        this.type = type;
    }

    @Override
    public TraversalStepType getType() {
        return type;
    }


}