using System.Collections.Generic;

namespace AspClassic.Parser;

/// <summary>
/// A parse tree for a declaration with a signature.
/// </summary>
public abstract class SignatureDeclaration : ModifiedDeclaration
{
	private readonly Location _KeywordLocation;

	private readonly SimpleName _Name;

	private readonly TypeParameterCollection _TypeParameters;

	private readonly ParameterCollection _Parameters;

	private readonly Location _AsLocation;

	private readonly AttributeBlockCollection _ResultTypeAttributes;

	private readonly TypeName _ResultType;

	/// <summary>
	/// The location of the declaration's keyword.
	/// </summary>
	public Location KeywordLocation => _KeywordLocation;

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

	/// <summary>
	/// The type parameters on the declaration, if any.
	/// </summary>
	public TypeParameterCollection TypeParameters => _TypeParameters;

	/// <summary>
	/// The parameters of the declaration.
	/// </summary>
	public ParameterCollection Parameters => _Parameters;

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

	/// <summary>
	/// The result type attributes, if any.
	/// </summary>
	public AttributeBlockCollection ResultTypeAttributes => _ResultTypeAttributes;

	/// <summary>
	/// The result type, if any.
	/// </summary>
	public TypeName ResultType => _ResultType;

	protected SignatureDeclaration(TreeType type, AttributeBlockCollection attributes, ModifierCollection modifiers, Location keywordLocation, SimpleName name, TypeParameterCollection typeParameters, ParameterCollection parameters, Location asLocation, AttributeBlockCollection resultTypeAttributes, TypeName resultType, Span span, IList<Comment> comments)
		: base(type, attributes, modifiers, span, comments)
	{
		SetParent(name);
		SetParent(typeParameters);
		SetParent(parameters);
		SetParent(resultType);
		SetParent(resultTypeAttributes);
		_KeywordLocation = keywordLocation;
		_Name = name;
		_TypeParameters = typeParameters;
		_Parameters = parameters;
		_AsLocation = asLocation;
		_ResultTypeAttributes = resultTypeAttributes;
		_ResultType = resultType;
	}

	protected override void GetChildTrees(IList<Tree> childList)
	{
		base.GetChildTrees(childList);
		Tree.AddChild(childList, Name);
		Tree.AddChild(childList, TypeParameters);
		Tree.AddChild(childList, Parameters);
		Tree.AddChild(childList, ResultTypeAttributes);
		Tree.AddChild(childList, ResultType);
	}
}