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AspClassic.Parser/MidAssignmentStatement.cs

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+using System;
+using System.Collections.Generic;
+
+namespace AspClassic.Parser;
+
+/// <summary>
+/// A parse tree for a Mid assignment statement.
+/// </summary>
+public sealed class MidAssignmentStatement : Statement
+{
+	private readonly bool _HasTypeCharacter;
+
+	private readonly Location _LeftParenthesisLocation;
+
+	private readonly Expression _TargetExpression;
+
+	private readonly Location _StartCommaLocation;
+
+	private readonly Expression _StartExpression;
+
+	private readonly Location _LengthCommaLocation;
+
+	private readonly Expression _LengthExpression;
+
+	private readonly Location _RightParenthesisLocation;
+
+	private readonly Location _OperatorLocation;
+
+	private readonly Expression _SourceExpression;
+
+	/// <summary>
+	/// Whether the Mid identifier had a type character.
+	/// </summary>
+	public bool HasTypeCharacter => _HasTypeCharacter;
+
+	/// <summary>
+	/// The location of the left parenthesis.
+	/// </summary>
+	public Location LeftParenthesisLocation => _LeftParenthesisLocation;
+
+	/// <summary>
+	/// The target of the assignment.
+	/// </summary>
+	public Expression TargetExpression => _TargetExpression;
+
+	/// <summary>
+	/// The location of the comma before the start expression.
+	/// </summary>
+	public Location StartCommaLocation => _StartCommaLocation;
+
+	/// <summary>
+	/// The expression representing the start of the string to replace.
+	/// </summary>
+	public Expression StartExpression => _StartExpression;
+
+	/// <summary>
+	/// The location of the comma before the length expression, if any.
+	/// </summary>
+	public Location LengthCommaLocation => _LengthCommaLocation;
+
+	/// <summary>
+	/// The expression representing the length of the string to replace, if any.
+	/// </summary>
+	public Expression LengthExpression => _LengthExpression;
+
+	/// <summary>
+	/// The right parenthesis location.
+	/// </summary>
+	public Location RightParenthesisLocation => _RightParenthesisLocation;
+
+	/// <summary>
+	/// The location of the operator.
+	/// </summary>
+	public Location OperatorLocation => _OperatorLocation;
+
+	/// <summary>
+	/// The source of the assignment.
+	/// </summary>
+	public Expression SourceExpression => _SourceExpression;
+
+	/// <summary>
+	/// Constructs a new parse tree for an assignment statement.
+	/// </summary>
+	/// <param name="hasTypeCharacter">Whether the Mid identifier has a type character.</param>
+	/// <param name="leftParenthesisLocation">The location of the left parenthesis.</param>
+	/// <param name="targetExpression">The target of the assignment.</param>
+	/// <param name="startCommaLocation">The location of the comma before the start expression.</param>
+	/// <param name="startExpression">The expression representing the start of the string to replace.</param>
+	/// <param name="lengthCommaLocation">The location of the comma before the length expression, if any.</param>
+	/// <param name="lengthExpression">The expression representing the length of the string to replace, if any.</param>
+	/// <param name="operatorLocation">The location of the operator.</param>
+	/// <param name="sourceExpression">The source of the assignment.</param>
+	/// <param name="span">The location of the parse tree.</param>
+	/// <param name="comments">The comments for the parse tree.</param>
+	public MidAssignmentStatement(bool hasTypeCharacter, Location leftParenthesisLocation, Expression targetExpression, Location startCommaLocation, Expression startExpression, Location lengthCommaLocation, Expression lengthExpression, Location rightParenthesisLocation, Location operatorLocation, Expression sourceExpression, Span span, IList<Comment> comments)
+		: base(TreeType.MidAssignmentStatement, span, comments)
+	{
+		if (targetExpression == null)
+		{
+			throw new ArgumentNullException("targetExpression");
+		}
+		if (startExpression == null)
+		{
+			throw new ArgumentNullException("startExpression");
+		}
+		if (sourceExpression == null)
+		{
+			throw new ArgumentNullException("sourceExpression");
+		}
+		SetParent(targetExpression);
+		SetParent(startExpression);
+		SetParent(lengthExpression);
+		SetParent(sourceExpression);
+		_HasTypeCharacter = hasTypeCharacter;
+		_LeftParenthesisLocation = leftParenthesisLocation;
+		_TargetExpression = targetExpression;
+		_StartCommaLocation = startCommaLocation;
+		_StartExpression = startExpression;
+		_LengthCommaLocation = lengthCommaLocation;
+		_LengthExpression = lengthExpression;
+		_RightParenthesisLocation = rightParenthesisLocation;
+		_OperatorLocation = operatorLocation;
+		_SourceExpression = sourceExpression;
+	}
+
+	protected override void GetChildTrees(IList<Tree> childList)
+	{
+		Tree.AddChild(childList, TargetExpression);
+		Tree.AddChild(childList, StartExpression);
+		Tree.AddChild(childList, LengthExpression);
+		Tree.AddChild(childList, SourceExpression);
+	}
+}