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/*
* Copyright (c) 2021 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 org.opendc.harness.internal
import org.opendc.harness.api.Parameter
import org.opendc.harness.dsl.Experiment
import kotlin.properties.ReadOnlyProperty
import kotlin.reflect.KProperty
/**
* A delegate for an experiment parameter.
*
* @property parameter The parameter descriptor of this delegate.
*/
internal class ParameterDelegate<T>(val parameter: Parameter<T>) : ReadOnlyProperty<Experiment, T> {
/**
* Obtain the value for the parameter.
*/
override fun getValue(thisRef: Experiment, property: KProperty<*>): T {
val scenario = thisRef.scenario ?: throw IllegalStateException("Cannot use parameters before activation")
return scenario[parameter]
}
}
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