LabelExpression.cs

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using System.Diagnostics;
 
namespace System.Linq.Expressions;
 
[DebuggerTypeProxy(typeof(LabelExpressionProxy))]
public sealed class LabelExpression : Expression
{
    public sealed override Type Type => Target.Type;
 
    public sealed override ExpressionType NodeType => ExpressionType.Label;
 
    public LabelTarget Target { get; }
 
    public Expression? DefaultValue { get; }
 
    internal LabelExpression(LabelTarget label, Expression defaultValue)
    {
        Target = label;
        DefaultValue = defaultValue;
    }
 
    protected internal override Expression Accept(ExpressionVisitor visitor)
    {
        return visitor.VisitLabel(this);
    }
 
    public LabelExpression Update(LabelTarget target, Expression? defaultValue)
    {
        if (target == Target && defaultValue == DefaultValue)
        {
            return this;
        }
        return Expression.Label(target, defaultValue);
    }
}