45 lines
1.6 KiB
C#
45 lines
1.6 KiB
C#
// Copyright 2019 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace Google.Android.AppBundle.Editor.Internal
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{
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/// <summary>
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/// Provides methods to register a constructor and construct a list of instances.
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/// </summary>
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public class Registry<T>
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{
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private readonly List<Func<T>> _registeredConstructors = new List<Func<T>>();
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/// <summary>
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/// Register a constructor to be called whenever <see cref="ConstructInstances"/> is called. The result of the
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/// registered constructor will be included in the result of <see cref="ConstructInstances"/>.
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/// </summary>
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public void RegisterConstructor(Func<T> constructor)
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{
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_registeredConstructors.Add(constructor);
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}
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/// <summary>
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/// Calls all registered constructors and a list of instances.
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/// </summary>
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public IList<T> ConstructInstances()
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{
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return _registeredConstructors.Select(constructor => constructor.Invoke()).ToList();
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}
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}
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} |