InvocationExpressionN.cs

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using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Dynamic.Utils;
 
namespace System.Linq.Expressions;
 
internal sealed class InvocationExpressionN : InvocationExpression
{
    private IReadOnlyList<Expression> _arguments;
 
    public override int ArgumentCount => _arguments.Count;
 
    public InvocationExpressionN(Expression lambda, IReadOnlyList<Expression> arguments, Type returnType)
        : base(lambda, returnType)
    {
        _arguments = arguments;
    }
 
    internal override ReadOnlyCollection<Expression> GetOrMakeArguments()
    {
        return ExpressionUtils.ReturnReadOnly(ref _arguments);
    }
 
    public override Expression GetArgument(int index)
    {
        return _arguments[index];
    }
 
    internal override InvocationExpression Rewrite(Expression lambda, Expression[] arguments)
    {
        return System.Linq.Expressions.Expression.Invoke(lambda, arguments ?? _arguments);
    }
}