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AspClassic.Parser/ModifierCollection.cs

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+using System;
+using System.Collections.Generic;
+
+namespace AspClassic.Parser;
+
+/// <summary>
+/// A read-only collection of modifiers.
+/// </summary>
+public sealed class ModifierCollection : TreeCollection<Modifier>
+{
+	private readonly ModifierTypes _ModifierTypes;
+
+	/// <summary>
+	/// All the modifiers in the collection.
+	/// </summary>
+	public ModifierTypes ModifierTypes => _ModifierTypes;
+
+	/// <summary>
+	/// Constructs a collection of modifiers.
+	/// </summary>
+	/// <param name="modifiers">The modifiers in the collection.</param>
+	/// <param name="span">The location of the parse tree.</param>
+	public ModifierCollection(IList<Modifier> modifiers, Span span)
+		: base(TreeType.ModifierCollection, modifiers, span)
+	{
+		if (modifiers == null || modifiers.Count == 0)
+		{
+			throw new ArgumentException("ModifierCollection cannot be empty.");
+		}
+		foreach (Modifier Modifier in modifiers)
+		{
+			_ModifierTypes |= Modifier.ModifierType;
+		}
+	}
+}