zio.test.TestAnnotationMap.scala Maven / Gradle / Ivy
/*
* Copyright 2019-2023 John A. De Goes and the ZIO Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package zio.test
import zio.stacktracer.TracingImplicits.disableAutoTrace
import scala.collection.immutable.Map
/**
* An annotation map keeps track of annotations of different types.
*/
final class TestAnnotationMap private (private val map: Map[TestAnnotation[Any], AnyRef]) { self =>
def ++(that: TestAnnotationMap): TestAnnotationMap =
new TestAnnotationMap((self.map.toVector ++ that.map.toVector).foldLeft[Map[TestAnnotation[Any], AnyRef]](Map()) {
case (acc, (key, value)) =>
acc.updated(key, acc.get(key).fold(value)(key.combine(_, value).asInstanceOf[AnyRef]))
})
/**
* Appends the specified annotation to the annotation map.
*/
def annotate[V](key: TestAnnotation[V], value: V): TestAnnotationMap = {
val res = update[V](key, key.combine(_, value))
res
}
/**
* Retrieves the annotation of the specified type, or its default value if
* there is none.
*/
def get[V](key: TestAnnotation[V]): V =
map.get(key.asInstanceOf[TestAnnotation[Any]]).fold(key.initial)(_.asInstanceOf[V])
private def overwrite[V](key: TestAnnotation[V], value: V): TestAnnotationMap =
new TestAnnotationMap(map.updated(key.asInstanceOf[TestAnnotation[Any]], value.asInstanceOf[AnyRef]))
private def update[V](key: TestAnnotation[V], f: V => V): TestAnnotationMap =
overwrite(key, f(get(key)))
override def toString: String =
map.toString
}
object TestAnnotationMap {
/**
* An empty annotation map.
*/
val empty: TestAnnotationMap = new TestAnnotationMap(Map())
}