private string ChangeTopPageSize(string pageSizeParameterValue, PageSize topPageSize)
{
var elements = ParsePageSizeExpression(pageSizeParameterValue);
var elementInTopScopeIndex = elements.FindIndex(expression => expression.Scope == null);
if (topPageSize != null)
{
var topPageSizeElement = new PaginationElementQueryStringValueExpression(null, topPageSize.Value);
if (elementInTopScopeIndex != -1)
{
elements[elementInTopScopeIndex] = topPageSizeElement;
}
else
{
elements.Insert(0, topPageSizeElement);
}
}
else
{
if (elementInTopScopeIndex != -1)
{
elements.RemoveAt(elementInTopScopeIndex);
}
}
var parameterValue = string.Join(',',
elements.Select(expression => expression.Scope == null ? expression.Value.ToString() : $"{expression.Scope}:{expression.Value}"));
return(parameterValue == string.Empty ? null : parameterValue);
}
protected PaginationQueryStringValueExpression ParsePagination()
{
var elements = new List <PaginationElementQueryStringValueExpression>();
PaginationElementQueryStringValueExpression element = ParsePaginationElement();
elements.Add(element);
while (TokenStack.Any())
{
EatSingleCharacterToken(TokenKind.Comma);
element = ParsePaginationElement();
elements.Add(element);
}
return(new PaginationQueryStringValueExpression(elements));
}
