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Setting.cs
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Setting.cs
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/* Copyright 2010-present MongoDB Inc.
*
* 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.
*/
namespace MongoDB.Driver
{
/// <summary>
/// Represents a setting that may or may not have been set.
/// </summary>
/// <typeparam name="T">The type of the value.</typeparam>
public struct Setting<T>
{
// private fields
private T _value;
private bool _hasBeenSet;
// public properties
/// <summary>
/// Gets the value of the setting.
/// </summary>
public T Value
{
get { return _value; }
set
{
_value = value;
_hasBeenSet = true;
}
}
/// <summary>
/// Gets a value indicating whether the setting has been set.
/// </summary>
public bool HasBeenSet
{
get { return _hasBeenSet; }
}
// public methods
/// <summary>
/// Resets the setting to the unset state.
/// </summary>
public void Reset()
{
_value = default(T);
_hasBeenSet = false;
}
/// <summary>
/// Gets a canonical string representation for this setting.
/// </summary>
/// <returns>A canonical string representation for this setting.</returns>
public override string ToString()
{
return _hasBeenSet ? ((_value == null) ? "null" : _value.ToString()) : "default";
}
// internal methods
internal Setting<T> Clone()
{
var clone = new Setting<T>();
clone._value = _value;
clone._hasBeenSet = _hasBeenSet;
return clone;
}
}
}