using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree for a Catch statement.
/// </summary>
public sealed class CatchStatement : Statement
{
	private readonly SimpleName _Name;

	private readonly Location _AsLocation;

	private readonly TypeName _ExceptionType;

	private readonly Location _WhenLocation;

	private readonly Expression _FilterExpression;

	/// <summary>
	/// The name of the catch variable, if any.
	/// </summary>
	public SimpleName Name => _Name;

	/// <summary>
	/// The location of the 'As', if any.
	/// </summary>
	public Location AsLocation => _AsLocation;

	/// <summary>
	/// The type of the catch variable, if any.
	/// </summary>
	public TypeName ExceptionType => _ExceptionType;

	/// <summary>
	/// The location of the 'When', if any.
	/// </summary>
	public Location WhenLocation => _WhenLocation;

	/// <summary>
	/// The filter expression, if any.
	/// </summary>
	public Expression FilterExpression => _FilterExpression;

	/// <summary>
	/// Constructs a new parse tree for a Catch statement.
	/// </summary>
	/// <param name="name">The name of the catch variable, if any.</param>
	/// <param name="asLocation">The location of the 'As', if any.</param>
	/// <param name="exceptionType">The type of the catch variable, if any.</param>
	/// <param name="whenLocation">The location of the 'When', if any.</param>
	/// <param name="filterExpression">The filter expression, if any.</param>
	/// <param name="span">The location of the parse tree, if any.</param>
	/// <param name="comments">The comments for the parse tree, if any.</param>
	public CatchStatement(SimpleName name, Location asLocation, TypeName exceptionType, Location whenLocation, Expression filterExpression, Span span, IList<Comment> comments)
		: base(TreeType.CatchStatement, span, comments)
	{
		SetParent(name);
		SetParent(exceptionType);
		SetParent(filterExpression);
		_Name = name;
		_AsLocation = asLocation;
		_ExceptionType = exceptionType;
		_WhenLocation = whenLocation;
		_FilterExpression = filterExpression;
	}

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