Sources/ApacheBeam/Core/PTransform/Group.swift

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import Foundation

public struct Group<Content> {
    let content: Content
    public init(@PTransformBuilder content: () -> Content) {
        self.content = content()
    }
}

extension Group: _PrimitivePTransform, PTransform where Content: PTransform {
    public func _visitChildren(_ visitor: some PTransformVisitor) {
        visitor.visit(content)
    }
}

extension Group: ParentPTransform where Content: PTransform {
    public var children: [AnyPTransform] { (content as? ParentPTransform)?.children ?? [AnyPTransform(content)] }
}

extension Group: GroupPTransform where Content: PTransform {}