76 lines
2.2 KiB
C#
76 lines
2.2 KiB
C#
/*
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Copyright 2011 Google Inc
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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namespace Google.Apis.Util
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{
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/// <summary>
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/// Repeatable class which allows you to both pass a single element, as well as an array, as a parameter value.
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/// </summary>
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public class Repeatable<T> : IEnumerable<T>
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{
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private readonly IList<T> values;
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/// <summary>Creates a repeatable value.</summary>
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public Repeatable(IEnumerable<T> enumeration)
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{
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values = new ReadOnlyCollection<T>(new List<T>(enumeration));
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}
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/// <inheritdoc/>
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public IEnumerator<T> GetEnumerator()
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{
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return values.GetEnumerator();
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}
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IEnumerator IEnumerable.GetEnumerator()
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{
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return GetEnumerator();
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}
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/// <summary>Converts the single element into a repeatable.</summary>
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public static implicit operator Repeatable<T>(T elem)
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{
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if (elem == null)
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{
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return null;
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}
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return new Repeatable<T>(new[] { elem });
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}
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/// <summary>Converts a number of elements into a repeatable.</summary>
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public static implicit operator Repeatable<T>(T[] elem)
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{
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if (elem.Length == 0)
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{
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return null;
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}
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return new Repeatable<T>(elem);
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}
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/// <summary>Converts a number of elements into a repeatable.</summary>
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public static implicit operator Repeatable<T>(List<T> elem)
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{
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return new Repeatable<T>(elem);
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}
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}
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}
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