ScopeWithType.cs

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using System.Collections.Generic;
using System.Collections.ObjectModel;
 
namespace System.Linq.Expressions;
 
internal sealed class ScopeWithType : ScopeN
{
    public sealed override Type Type { get; }
 
    internal ScopeWithType(IReadOnlyList<ParameterExpression> variables, IReadOnlyList<Expression> expressions, Type type)
        : base(variables, expressions)
    {
        Type = type;
    }
 
    internal override BlockExpression Rewrite(ReadOnlyCollection<ParameterExpression> variables, Expression[] args)
    {
        if (args == null)
        {
            Expression.ValidateVariables(variables, "variables");
            return new ScopeWithType(variables, base.Body, Type);
        }
        return new ScopeWithType(ReuseOrValidateVariables(variables), args, Type);
    }
}