using System;
using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree for a local declaration statement.
/// </summary>
public sealed class LocalDeclarationStatement : Statement
{
	private readonly ModifierCollection _Modifiers;

	private readonly VariableDeclaratorCollection _VariableDeclarators;

	/// <summary>
	/// The statement modifiers.
	/// </summary>
	public ModifierCollection Modifiers => _Modifiers;

	/// <summary>
	/// The variable declarators.
	/// </summary>
	public VariableDeclaratorCollection VariableDeclarators => _VariableDeclarators;

	/// <summary>
	/// Constructs a new parse tree for a local declaration statement.
	/// </summary>
	/// <param name="modifiers">The statement modifiers.</param>
	/// <param name="variableDeclarators">The variable declarators.</param>
	/// <param name="span">The location of the parse tree.</param>
	/// <param name="comments">The comments for the parse tree.</param>
	public LocalDeclarationStatement(ModifierCollection modifiers, VariableDeclaratorCollection variableDeclarators, Span span, IList<Comment> comments)
		: base(TreeType.LocalDeclarationStatement, span, comments)
	{
		if (modifiers == null)
		{
			throw new ArgumentNullException("modifers");
		}
		if (variableDeclarators == null)
		{
			throw new ArgumentNullException("variableDeclarators");
		}
		SetParent(modifiers);
		SetParent(variableDeclarators);
		_Modifiers = modifiers;
		_VariableDeclarators = variableDeclarators;
	}

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