com.telenav.mesakit.navigation.routing.cost.EdgePermissionFunction Maven / Gradle / Ivy

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// © 2011-2021 Telenav, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
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// https://www.apache.org/licenses/LICENSE-2.0
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package com.telenav.mesakit.navigation.routing.cost;

import com.telenav.mesakit.graph.Edge;

/**
 * Function for determining if the given edge is allowed
 *
 * @author jonathanl (shibo)
 */
public interface EdgePermissionFunction
{
    EdgePermissionFunction NULL = edge -> Permission.MAYBE;

    enum Permission
    {
        YES,
        MAYBE
    }

    /**
     * Returns true if the given edge is allowed
     */
    Permission allowed(Edge edge);
}