wehub-resource-sync
72 lines
2.6 KiB
C#
72 lines
2.6 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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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 http://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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*/
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using System;
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using QuantConnect.Data;
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namespace QuantConnect.Indicators
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{
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/// <summary>
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/// An indicator that will always return the same value.
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/// </summary>
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/// <typeparam name="T">The type of input this indicator takes</typeparam>
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public sealed class ConstantIndicator<T> : IndicatorBase<T>
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where T : IBaseData
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{
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private readonly decimal _value;
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/// <summary>
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/// Gets true since the ConstantIndicator is always ready to return the same value
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/// </summary>
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public override bool IsReady => true;
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/// <summary>
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/// Creates a new ConstantIndicator that will always return the specified value
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/// </summary>
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/// <param name="name">The name of this indicator</param>
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/// <param name="value">The constant value to be returned</param>
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public ConstantIndicator(string name, decimal value)
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: base(name)
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{
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_value = value;
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// set this immediately so it always has the .Value property correctly set,
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// the time will be updated anytime this indicators Update method gets called.
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Current = new IndicatorDataPoint(DateTime.MinValue, value);
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}
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/// <summary>
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/// Computes the next value of this indicator from the given state
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/// </summary>
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/// <param name="input">The input given to the indicator</param>
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/// <returns>A new value for this indicator</returns>
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protected override decimal ComputeNextValue(T input)
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{
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return _value;
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}
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/// <summary>
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/// Resets this indicator to its initial state
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/// </summary>
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public override void Reset()
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{
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base.Reset();
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// re-initialize the current value, constant should ALWAYS return this value
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Current = new IndicatorDataPoint(DateTime.MinValue, _value);
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}
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}
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}
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