using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree for an expression initializer.
/// </summary>
public sealed class ExpressionInitializer : Initializer
{
	private readonly Expression _Expression;

	/// <summary>
	/// The expression.
	/// </summary>
	public Expression Expression => _Expression;

	/// <summary>
	/// Constructs a new expression initializer parse tree.
	/// </summary>
	/// <param name="expression">The expression.</param>
	/// <param name="span">The location of the parse tree.</param>
	public ExpressionInitializer(Expression expression, Span span)
		: base(TreeType.ExpressionInitializer, span)
	{
		if (expression == null)
		{
			throw new ArgumentNullException("expression");
		}
		SetParent(expression);
		_Expression = expression;
	}

	protected override void GetChildTrees(IList<Tree> childList)
	{
		Tree.AddChild(childList, Expression);
	}
}