forked from kscience/kmath
32 lines
1.0 KiB
Kotlin
32 lines
1.0 KiB
Kotlin
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/*
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* Copyright 2018-2023 KMath contributors.
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* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
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*/
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package space.kscience.attributes
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/**
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* An attribute that has a type parameter for value
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* @param type parameter-type
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*/
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public abstract class PolymorphicAttribute<T>(public val type: SafeType<T>) : Attribute<T> {
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override fun equals(other: Any?): Boolean = other != null &&
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(this::class == other::class) &&
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(other as? PolymorphicAttribute<*>)?.type == this.type
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override fun hashCode(): Int = this::class.hashCode() + type.hashCode()
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}
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/**
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* Get a polymorphic attribute using attribute factory
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*/
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public operator fun <T> Attributes.get(attributeKeyBuilder: () -> PolymorphicAttribute<T>): T? = get(attributeKeyBuilder())
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/**
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* Set a polymorphic attribute using its factory
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*/
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public operator fun <O, T> AttributesBuilder<O>.set(attributeKeyBuilder: () -> PolymorphicAttribute<T>, value: T) {
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set(attributeKeyBuilder(), value)
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}
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