CatchBlock.cs

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using System.Diagnostics;
 
namespace System.Linq.Expressions;
 
[DebuggerTypeProxy(typeof(Expression.CatchBlockProxy))]
public sealed class CatchBlock
{
    public ParameterExpression? Variable { get; }
 
    public Type Test { get; }
 
    public Expression Body { get; }
 
    public Expression? Filter { get; }
 
    internal CatchBlock(Type test, ParameterExpression variable, Expression body, Expression filter)
    {
        Test = test;
        Variable = variable;
        Body = body;
        Filter = filter;
    }
 
    public override string ToString()
    {
        return ExpressionStringBuilder.CatchBlockToString(this);
    }
 
    public CatchBlock Update(ParameterExpression? variable, Expression? filter, Expression body)
    {
        if (variable == Variable && filter == Filter && body == Body)
        {
            return this;
        }
        return Expression.MakeCatchBlock(Test, variable, body, filter);
    }
}