using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A read-only collection of variable names.
/// </summary>
public sealed class VariableNameCollection : CommaDelimitedTreeCollection<VariableName>
{
	/// <summary>
	/// Constructs a new variable name collection.
	/// </summary>
	/// <param name="variableNames">The variable names 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 VariableNameCollection(IList<VariableName> variableNames, IList<Location> commaLocations, Span span)
		: base(TreeType.VariableNameCollection, variableNames, commaLocations, span)
	{
		if (variableNames == null || variableNames.Count == 0)
		{
			throw new ArgumentException("VariableNameCollection cannot be empty.");
		}
	}
}