/*
 * MIT License
 *
 * Copyright (c) 2017 atlarge-research
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.atlarge.opendc.model.topology

/**
 * Filter a [Set] of [Edge]s based on the tag of the edges and return the origin nodes casted to type `T`.
 *
 * @param tag The tag of the edges to get.
 * @return An [Iterable] of the specified type `T` with the given tag.
 */
inline fun <reified T> Set<Edge<*>>.origins(tag: String) = filter { it.tag == tag }.map { it.from as T }

/**
 * Filter a [Set] of [Edge]s based on the tag of the edges and return the destination nodes casted to type `T`.
 *
 * @param tag The tag of the edges to get.
 * @return An [Iterable] of the specified type `T` with the given tag.
 */
inline fun <reified T> Set<Edge<*>>.destinations(tag: String) = filter { it.tag == tag }.map { it.to as T }