System.Dynamic.Utils.ExpressionVisitorUtils.VisitParameters C# (CSharp) Method

        public static ParameterExpression[] VisitParameters(ExpressionVisitor visitor, IParameterProvider nodes, string callerName)
        {
            ParameterExpression[] newNodes = null;
            for (int i = 0, n = nodes.ParameterCount; i < n; i++)
            {
                ParameterExpression curNode = nodes.GetParameter(i);
                ParameterExpression node = visitor.VisitAndConvert(curNode, callerName);

                if (newNodes != null)
                {
                    newNodes[i] = node;
                }
                else if (!object.ReferenceEquals(node, curNode))
                {
                    newNodes = new ParameterExpression[n];
                    for (int j = 0; j < i; j++)
                    {
                        newNodes[j] = nodes.GetParameter(j);
                    }
                    newNodes[i] = node;
                }
            }
            return newNodes;
        }
    }