using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A read-only collection of declarations.
/// </summary>
public sealed class DeclarationCollection : ColonDelimitedTreeCollection<Declaration>
{
	/// <summary>
	/// Constructs a new collection of declarations.
	/// </summary>
	/// <param name="declarations">The declarations in the collection.</param>
	/// <param name="colonLocations">The locations of the colons in the collection.</param>
	/// <param name="span">The location of the parse tree.</param>
	public DeclarationCollection(IList<Declaration> declarations, IList<Location> colonLocations, Span span)
		: base(TreeType.DeclarationCollection, declarations, colonLocations, span)
	{
		if ((declarations == null || declarations.Count == 0) && (colonLocations == null || colonLocations.Count == 0))
		{
			throw new ArgumentException("DeclarationCollection cannot be empty.");
		}
	}
}