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AspClassic.Parser/ExpressionCollection.cs

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+using System;
+using System.Collections.Generic;
+
+namespace AspClassic.Parser;
+
+/// <summary>
+/// A read-only collection of expressions.
+/// </summary>
+public sealed class ExpressionCollection : CommaDelimitedTreeCollection<Expression>
+{
+	/// <summary>
+	/// Constructs a new collection of expressions.
+	/// </summary>
+	/// <param name="expressions">The expressions in the collection.</param>
+	/// <param name="commaLocations">The locations of the commas in the collection.</param>
+	/// <param name="span">The location of the parse tree.</param>
+	public ExpressionCollection(IList<Expression> expressions, IList<Location> commaLocations, Span span)
+		: base(TreeType.ExpressionCollection, expressions, commaLocations, span)
+	{
+		if ((expressions == null || expressions.Count == 0) && (commaLocations == null || commaLocations.Count == 0))
+		{
+			throw new ArgumentException("ExpressionCollection cannot be empty.");
+		}
+	}
+}