/*
* Copyright (C) 2016 The Guava Authors
*
* 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 com.google.common.graph;
import com.google.common.base.Optional;
/**
* A base class for builders that construct graphs with user-defined properties.
*
* @author James Sexton
*/
abstract class AbstractGraphBuilder<N> {
final boolean directed;
boolean allowsSelfLoops = false;
ElementOrder<N> nodeOrder = ElementOrder.insertion();
Optional<Integer> expectedNodeCount = Optional.absent();
/**
* Creates a new instance with the specified edge directionality.
*
* @param directed if true, creates an instance for graphs whose edges are each directed; if
* false, creates an instance for graphs whose edges are each undirected.
*/
AbstractGraphBuilder(boolean directed) {
this.directed = directed;
}
}