Add rule set and rule classes

Author: wforney

Diff for: SharedCode.Core/Workflow/Rule.Generic.cs

@@ -0,0 +1,29 @@
+// <copyright file="Rule.cs" company="improvGroup, LLC">
+// Copyright © 2022 improvGroup, LLC. All Rights Reserved.
+// </copyright>
+
+namespace SharedCode.Workflow;
+
+using System;
+
+/// <summary>
+/// The rule class.
+/// </summary>
+/// <typeparam name="T">The type of input on which the rule operates.</typeparam>
+public class Rule<T>
+{
+	private readonly Func<T, bool> condition;
+
+	/// <summary>
+	/// Initializes a new instance of the <see cref="Rule{T}" /> class.
+	/// </summary>
+	/// <param name="condition">The function used to evaluate the rule condition; returns true if passed, false otherwise.</param>
+	public Rule(Func<T, bool> condition) => this.condition = condition;
+
+	/// <summary>
+	/// Determines whether the specified input satisfies the condition.
+	/// </summary>
+	/// <param name="input">The input to be evaluated.</param>
+	/// <returns><c>true</c> if the specified input is satisfies the condition; otherwise, <c>false</c>.</returns>
+	public bool IsSatisfied(T input) => this.condition(input);
+}

Diff for: SharedCode.Core/Workflow/Rule.cs

@@ -0,0 +1,19 @@
+// <copyright file="Rule.cs" company="improvGroup, LLC">
+// Copyright © 2022 improvGroup, LLC. All Rights Reserved.
+// </copyright>
+
+namespace SharedCode.Workflow;
+
+/// <summary>
+/// The rule class.
+/// </summary>
+public class Rule : Rule<object?>
+{
+	/// <summary>
+	/// Initializes a new instance of the <see cref="Rule"/> class.
+	/// </summary>
+	/// <param name="condition">The function used to evaluate the rule condition; returns true if passed, false otherwise.</param>
+	public Rule(Func<object?, bool> condition) : base(condition)
+	{
+	}
+}

Diff for: SharedCode.Core/Workflow/RuleSet.Generic.cs

@@ -0,0 +1,35 @@
+// <copyright file="Rule.cs" company="improvGroup, LLC">
+// Copyright © 2022 improvGroup, LLC. All Rights Reserved.
+// </copyright>
+
+namespace SharedCode.Workflow;
+
+using System.Collections.Generic;
+
+/// <summary>
+/// A class that holds a set of rules that can be evaluated.
+/// </summary>
+/// <typeparam name="T">The type of input to be evaluated.</typeparam>
+public class RuleSet<T>
+{
+	private readonly List<Rule<T>> rules = new();
+
+	/// <summary>
+	/// Adds the specified rule to the set.
+	/// </summary>
+	/// <param name="rule">The rule to be added.</param>
+	public void AddRule(Rule<T> rule) => this.rules.Add(rule);
+
+	/// <summary>
+	/// Removes the specified rule from the set.
+	/// </summary>
+	/// <param name="rule">The rule to be removed.</param>
+	public void RemoveRule(Rule<T> rule) => this.rules.Remove(rule);
+
+	/// <summary>
+	/// Evaluates the specified input against the rules in the set.
+	/// </summary>
+	/// <param name="input">The input to evaluate.</param>
+	/// <returns><c>true</c> if the input satisfies the conditions of all rules in the set, <c>false</c> otherwise.</returns>
+	public bool Evaluate(T input) => this.rules.All(rule => rule.IsSatisfied(input));
+}

Diff for: SharedCode.Core/Workflow/RuleSet.cs

@@ -0,0 +1,12 @@
+// <copyright file="Rule.cs" company="improvGroup, LLC">
+// Copyright © 2022 improvGroup, LLC. All Rights Reserved.
+// </copyright>
+
+namespace SharedCode.Workflow;
+
+/// <summary>
+/// A class that holds a set of rules that can be evaluated.
+/// </summary>
+public class RuleSet : RuleSet<object?>
+{
+}