DynamicExpressionN.cs

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using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Dynamic.Utils;
using System.Runtime.CompilerServices;
 
namespace System.Linq.Expressions;
 
internal class DynamicExpressionN : DynamicExpression, IArgumentProvider
{
    private IReadOnlyList<Expression> _arguments;
 
    int IArgumentProvider.ArgumentCount => _arguments.Count;
 
    internal DynamicExpressionN(Type delegateType, CallSiteBinder binder, IReadOnlyList<Expression> arguments)
        : base(delegateType, binder)
    {
        _arguments = arguments;
    }
 
    Expression IArgumentProvider.GetArgument(int index)
    {
        return _arguments[index];
    }
 
    internal override bool SameArguments(ICollection<Expression> arguments)
    {
        return ExpressionUtils.SameElements(arguments, _arguments);
    }
 
    internal override ReadOnlyCollection<Expression> GetOrMakeArguments()
    {
        return ExpressionUtils.ReturnReadOnly(ref _arguments);
    }
 
    internal override DynamicExpression Rewrite(Expression[] args)
    {
        return ExpressionExtension.MakeDynamic(base.DelegateType, base.Binder, args);
    }
}