public override XmlParserState PushChar (char c, IXmlParserContext context, ref string rollback)
{
if (context.CurrentStateLength == 0)
context.StateTag = 0;
if (c == '<') {
if (context.StateTag == 0) {
context.StateTag++;
return null;
}
}
if (context.StateTag > 0) {
if (CLOSE[context.StateTag] == c) {
context.StateTag++;
if (context.StateTag == CLOSE.Length) {
var el = (XElement) context.Nodes.Pop ();
var closing = new XClosingTag (new XName ("script"), context.LocationMinus (CLOSE.Length));
closing.End (context.Location);
el.Close (closing);
rollback = string.Empty;
return Parent;
}
} else {
context.StateTag = 0;
}
}
return null;
}
public override XmlParserState PushChar (char c, IXmlParserContext context, ref string rollback)
{
var ct = context.Nodes.Peek () as XClosingTag;
if (ct == null) {
Debug.Assert (context.CurrentStateLength == 1,
"IncompleteNode must not be an XClosingTag when CurrentStateLength is 1");
ct = new XClosingTag (context.LocationMinus (3)); //3 = </ and the current char
context.Nodes.Push (ct);
}
//if tag closed
if (c == '>') {
context.Nodes.Pop ();
if (ct.IsNamed) {
ct.End (context.Location);
// walk up tree of parents looking for matching tag
int popCount = 0;
bool found = false;
foreach (XObject node in context.Nodes) {
popCount++;
XElement element = node as XElement;
if (element != null && element.Name == ct.Name) {
found = true;
break;
}
}
if (!found)
popCount = 0;
//clear the stack of intermediate unclosed tags
while (popCount > 1) {
XElement el = context.Nodes.Pop () as XElement;
if (el != null)
context.LogError (string.Format (
"Unclosed tag '{0}' at line {1}, column {2}.", el.Name.FullName, el.Region.BeginLine, el.Region.BeginColumn),
ct.Region);
popCount--;
}
//close the start tag, if we found it
if (popCount > 0) {
if (context.BuildTree)
((XElement) context.Nodes.Pop ()).Close (ct);
else
context.Nodes.Pop ();
} else {
context.LogError (
"Closing tag '" + ct.Name.FullName + "' does not match any currently open tag.",
ct.Region
);
}
} else {
context.LogError ("Closing tag ended prematurely.");
}
return Parent;
}
if (c == '<') {
context.LogError ("Unexpected '<' in tag.", context.LocationMinus (1));
context.Nodes.Pop ();
rollback = string.Empty;
return Parent;
}
if (XmlChar.IsWhitespace (c)) {
return null;
}
if (!ct.IsNamed && (char.IsLetter (c) || c == '_')) {
rollback = string.Empty;
return NameState;
}
rollback = string.Empty;
context.LogError ("Unexpected character '" + c + "' in closing tag.", context.LocationMinus (1));
context.Nodes.Pop ();
return Parent;
}