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AspClassic.Parser/IfBlockStatement.cs

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+using System;
+using System.Collections.Generic;
+
+namespace AspClassic.Parser;
+
+/// <summary>
+/// A parse tree for an If block.
+/// </summary>
+public sealed class IfBlockStatement : BlockStatement
+{
+	private readonly Expression _Expression;
+
+	private readonly Location _ThenLocation;
+
+	private readonly StatementCollection _ElseIfBlockStatements;
+
+	private readonly ElseBlockStatement _ElseBlockStatement;
+
+	private readonly EndBlockStatement _EndStatement;
+
+	/// <summary>
+	/// The conditional expression.
+	/// </summary>
+	public Expression Expression => _Expression;
+
+	/// <summary>
+	/// The location of the 'Then', if any.
+	/// </summary>
+	public Location ThenLocation => _ThenLocation;
+
+	/// <summary>
+	/// The Else If statements.
+	/// </summary>
+	public StatementCollection ElseIfBlockStatements => _ElseIfBlockStatements;
+
+	/// <summary>
+	/// The Else statement, if any.
+	/// </summary>
+	public ElseBlockStatement ElseBlockStatement => _ElseBlockStatement;
+
+	/// <summary>
+	/// The End If statement, if any.
+	/// </summary>
+	public EndBlockStatement EndStatement => _EndStatement;
+
+	/// <summary>
+	/// Constructs a new parse tree for a If statement.
+	/// </summary>
+	/// <param name="expression">The conditional expression.</param>
+	/// <param name="thenLocation">The location of the 'Then', if any.</param>
+	/// <param name="statements">The statements in the If block.</param>
+	/// <param name="elseIfBlockStatements">The Else If statements.</param>
+	/// <param name="elseBlockStatement">The Else statement, if any.</param>
+	/// <param name="endStatement">The End If statement, if any.</param>
+	/// <param name="span">The location of the parse tree.</param>
+	/// <param name="comments">The comments for the parse tree.</param>
+	public IfBlockStatement(Expression expression, Location thenLocation, StatementCollection statements, StatementCollection elseIfBlockStatements, ElseBlockStatement elseBlockStatement, EndBlockStatement endStatement, Span span, IList<Comment> comments)
+		: base(TreeType.IfBlockStatement, statements, span, comments)
+	{
+		if (expression == null)
+		{
+			throw new ArgumentNullException("expression");
+		}
+		SetParent(expression);
+		SetParent(elseIfBlockStatements);
+		SetParent(elseBlockStatement);
+		SetParent(endStatement);
+		_Expression = expression;
+		_ThenLocation = thenLocation;
+		_ElseIfBlockStatements = elseIfBlockStatements;
+		_ElseBlockStatement = elseBlockStatement;
+		_EndStatement = endStatement;
+	}
+
+	protected override void GetChildTrees(IList<Tree> childList)
+	{
+		Tree.AddChild(childList, Expression);
+		base.GetChildTrees(childList);
+		Tree.AddChild(childList, ElseIfBlockStatements);
+		Tree.AddChild(childList, ElseBlockStatement);
+		Tree.AddChild(childList, EndStatement);
+	}
+}