using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree to represent a variable name.
/// </summary>
/// <remarks>
/// A variable name can have an array modifier after it (e.g. 'x(10) As Integer').
/// </remarks>
public sealed class VariableName : Name
{
	private readonly SimpleName _Name;

	private readonly ArrayTypeName _ArrayType;

	/// <summary>
	/// The name.
	/// </summary>
	public SimpleName Name => _Name;

	/// <summary>
	/// The array modifier, if any.
	/// </summary>
	public ArrayTypeName ArrayType => _ArrayType;

	/// <summary>
	/// Constructs a new variable name parse tree.
	/// </summary>
	/// <param name="name">The name.</param>
	/// <param name="arrayType">The array modifier, if any.</param>
	/// <param name="span">The location of the parse tree.</param>
	public VariableName(SimpleName name, ArrayTypeName arrayType, Span span)
		: base(TreeType.VariableName, span)
	{
		if (name == null)
		{
			throw new ArgumentNullException("name");
		}
		SetParent(name);
		SetParent(arrayType);
		_Name = name;
		_ArrayType = arrayType;
	}

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