private IParser <char, XElement> Element(
Func <string, bool> name,
IParser <char, IEnumerable <XAttribute> > attributes,
IParser <char, IEnumerable <XObject> > content)
{
Contract.Requires(name != null);
Contract.Requires(attributes != null);
Contract.Requires(content != null);
Contract.Ensures(Contract.Result <IParser <char, XElement> >() != null);
#if !SILVERLIGHT || WINDOWS_PHONE
var parser = element(name, attributes, Comment.NoneOrMore().And(content));
#else
var parser = element(name, attributes, Comment.Cast <char, XComment, XObject>().NoneOrMore().And(content));
#endif
Contract.Assume(parser != null);
return(parser);
}
// IParser is not covariant on TResult in Silverlight because IEnumerable<T> is not covariant on T.
private IParser <char, IEnumerable <XObject> > Content(
IEnumerable <IParser <char, XObject> > content)
{
Contract.Requires(content != null);
Contract.Ensures(Contract.Result <IParser <char, IEnumerable <XObject> > >() != null);
var contentList = content.ToList();
var contentWithComments = new List <IParser <char, IEnumerable <XObject> > >(contentList.Count);
foreach (var item in contentList)
{
Contract.Assume(item != null);
contentWithComments.Add(Comment.Cast <char, XComment, XObject>().Maybe().And(item));
}
IParser <char, IEnumerable <XObject> > result;
if (contentWithComments.Count == 0)
{
result =
from noContent in Content(
text => text.Where(node => node.Value.Trim().Length > 0),
includeComments: false) // excluding comments actually allows them because of .None()
.None()
from _ in InsignificantWhiteSpace
from comments in comment.NoneOrMore()
from __ in InsignificantWhiteSpace
select comments.Cast <XObject>();
}
else
{
result = contentWithComments.All();
}
return(result);
}
