com.tealcube.minecraft.bukkit.mythicdrops.MapExtensions.kt Maven / Gradle / Ivy
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/*
* This file is part of MythicDrops, licensed under the MIT License.
*
* Copyright (C) 2019 Richard Harrah
*
* 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.tealcube.minecraft.bukkit.mythicdrops
import org.bukkit.enchantments.Enchantment
import kotlin.math.max
internal fun Map>.additivePlus(pair: Pair>): Map> {
val originalValue = this[pair.first] ?: emptySet()
val additiveValue = originalValue + pair.second
return this.plus(pair.first to additiveValue)
}
internal fun Map.merge(other: Map): Map {
val merged = toMutableMap()
for (entry in other) {
val mergedValue = merged[entry.key]
val toSet =
if (mergedValue != null) {
max(mergedValue, entry.value)
} else {
entry.value
}
merged[entry.key] = toSet
}
return merged.toMap()
}
internal fun Map.highestByValue(): Enchantment? = maxByOrNull { it.value }?.key