/**
 * @author Hector J. Vasquez <ipi.vasquez@gmail.com>
 *
 * @licence
 * 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.
 */
import Vertex from './Vertex';
import { weightFunc } from './Graph';
/**
 * Represents an edge of a graph. It must provides a source, a destination
 * and optionally a weight and name.
 */
export default class Edge {
    private _source;
    private _destination;
    info: any;
    private weightFunction;
    /**
     * Builds this with respective source, destination, weight(optional) and
     * name(optional).
     * @param _source The source of this.
     * @param _destination The destination of this.
     * @param weight The weight for this. It may be the result of a function
     * or just a number.
     * @param info Additional name for this.
     */
    constructor(_source: Vertex, _destination: Vertex, weight?: number | weightFunc, info?: any);
    private _weight;
    /**
     * Returns the weight of this edge. If weight is given by a function it
     * executes such function. If there is no weight defined it returns 1.
     * If the weight is given by a number it just returns the number.
     * @return The weight associated to this edge.
     */
    /**
     * Sets a weight for this.
     * @param w The number to be the weight for this vertex.
     */
    weight: number;
    /**
     * Gets the origin point of this.
     * @return The source of this.
     */
    /**
     * Sets the origin point for this.
     * @param value The vertex wanted to be the source of this edge.
     */
    source: Vertex;
    /**
     * Gets the destination for this.
     * @return The destination of this.
     */
    /**
     * Sets the destination for this.
     * @param value The new destination for this.
     */
    destination: Vertex;
    /**
     * Sets a weight function for this vertex.
     * @param f A function receiving the two vertex adjacent to this to
     * calculate weight for this.
     */
    setWeightFunction(f: weightFunc): void;
    /**
     * Removes the weight function.
     */
    removeWeightFunction(): void;
    /**
     * Returns this as an coordinate: (source, destiny, weight).
     * @return The representation of this.
     */
    toString(): string;
}