public override State PushChar(char c, IParseContext context, ref string rollback)
{
if (context.CurrentStateLength == 1)
{
context.Nodes.Push(new XProcessingInstruction(context.LocationMinus("<?".Length)));
}
if (c == '?')
{
if (context.StateTag == NOMATCH)
{
context.StateTag = QUESTION;
return(null);
}
}
else if (c == '>' && context.StateTag == QUESTION)
{
// if the '?' is followed by a '>', the state has ended
// so attach a node to the DOM and end the state
XProcessingInstruction xpi = (XProcessingInstruction)context.Nodes.Pop();
if (context.BuildTree)
{
xpi.End(context.Location);
((XContainer)context.Nodes.Peek()).AddChildNode(xpi);
}
return(Parent);
}
else
{
context.StateTag = NOMATCH;
}
return(null);
}
protected override int Dispatch(char c)
{
switch (CurrentXState)
{
case XState.Free:
switch (c)
{
case '<':
return((int)XState.OpeningBracket);
// case '&': return (int) XState.Entity;
default:
return((int)XState.Free);
}
case XState.Malformed:
if (StateLength == 0)
{
if (BuildTree)
{
ConnectAll();
}
EndAll(true);
}
switch (c)
{
case '>':
return((int)XState.Free);
case '<':
return((int)XState.OpeningBracket);
default:
return((int)XState.Malformed);
}
case XState.OpeningBracket:
if (StateLength == 0)
{
switch (c)
{
case '!':
return((int)XState.OpeningBracket);
case '?':
Nodes.Push(new XProcessingInstruction(this.Position - 2));
return((int)XState.ProcessingInstruction);
case '/':
Nodes.Push(new XClosingTag(this.Position - 2));
return((int)XState.ClosingTagName);
if (char.IsLetter(c) || c == '_')
{
Nodes.Push(new XElement(this.Position - 2));
KeywordBuilder.Append(c);
return((int)XState.TagName);
}
}
}
else if (StateLength == 1)
{
switch (c)
{
case '-':
return((int)XState.CommentOpening);
case '[':
return((int)XState.CDataOpening);
}
}
LogError("Malformed tag start.");
if (c == '>')
{
return((int)XState.Free);
}
else if (c == '<')
{
return((int)XState.OpeningBracket);
}
else
{
return((int)XState.Malformed);
}
case XState.TagName:
return((int)XState.TagName);
/*
* if (char.IsLetterOrDigit (c) || c == '_') {
* KeywordBuilder.Append (c);
* return (int)XState.TagName;
* }
*
* if (c == ':') {
* XElement el = Nodes.Peek () as INamedXObject;
* if (namedObject.Name.Name != null || KeywordBuilder.Length == 0) {
* LogError ("Unexpected ':' in name.");
* return GetStateForCurrentObject ();
* } else {
* namedObject.Name = new XName (context.KeywordBuilder.ToString ());
* context.KeywordBuilder.Length = 0;
* }
* }
*
* else if (char.IsWhiteSpace (c)) return (int)XState.Tag;
* else if (c == '>') return (int)XState.Free;
* else if (c == '/') return (int)XState.SelfClosing;
* else break;
*
* case XState.Tag:
* if (char.IsWhiteSpace (c)) return (int)XState.Tag;
* else if (char.IsLetter (c)) return PushCurrent (XState.AttributeName);
* else if (c == '>') return (int)XState.Free;
* else if (c == '/') return (int)XState.SelfClosing;
* else break;
*
* case XState.SelfClosing:
* if (c == '>') return (int)XState.Free;
* else break;
*
* case XState.AttributeName:
* if (char.IsWhiteSpace (c))
* return (int)XState.AttributeNamed;
* else if (char.IsLetterOrDigit (c) | c == ':')
* return (int)XState.AttributeName;
* else if (c == '=')
* return (int)XState.AttributeValue;
* else return (int)XState.Malformed;
*
* case XState.AttributeNamed:
* if (c == '=') return (int)XState.AttributeValue;
* else if (char.IsWhiteSpace (c)) return (int)XState.AttributeNamed;
* else return (int)XState.Malformed;
*
* case XState.AttributeValue:
* if (c == '\'') return (int)XState.AttributeQuotes;
* else if (c == '"') return (int)XState.AttributeDoubleQuotes;
* else if (c == '<') break;
* else if (char.IsWhiteSpace (c)) return (int)XState.AttributeValue;
* else if (char.IsLetterOrDigit (c)) {
* LogWarning ("Unquoted attribute value.");
* return (int)XState.AttributeUnquoted;
* } else {
* LogWarning ("Incomplete attribute.");
* return PopState ();
* }
*
* case XState.AttributeQuotes:
* switch (c) {
* case '\'': return PopState ();
* case '<': return UnexpectedOpeningTag;
* case '&': return PushCurrent (XState.Entity);
* default: return (int)XState.AttributeQuotes;
* }
*
* case XState.AttributeDoubleQuotes:
* switch (c) {
* case '"': return PopState ();
* case '<': return UnexpectedOpeningTag;
* case '&': return PushCurrent (XState.Entity);
* default: return (int)XState.AttributeDoubleQuotes;
* }
*
* case XState.AttributeUnquoted:
* switch (c) {
* case '<': return UnexpectedOpeningTag;
* case '&': return PushCurrent (XState.Entity);
* case '.': case '_': case ':': case ';': return CurrentState;
* case '>': return (int)XState.Free;
* }
* if (char.IsLetterOrDigit (c)) return CurrentState;
* else if (char.IsWhiteSpace (c)) return PopState ();
* break;
*/
case XState.CData:
return((int)((c == ']')? XState.CDataClosing: XState.CData));
case XState.CDataOpening:
if (StateLength < "CDATA[".Length)
{
if ("CDATA["[StateLength] == c)
{
return((int)XState.CDataOpening);
}
else
{
break;
}
}
else
{
Nodes.Push(new XCData(Position - "<![CDATA[".Length));
return((int)XState.CData);
}
case XState.CDataClosing:
if ("]>"[StateLength] == c)
{
if (StateLength == 1)
{
XCData n = (XCData)Nodes.Pop();
n.End(Position);
((XContainer)Nodes.Peek()).AddChildNode(n);
return((int)XState.Free);
}
else
{
return((int)XState.CDataClosing);
}
}
else
{
return((int)XState.CData);
}
/*
* case XState.Entity:
* if ((StateLength == 0 && c == '#') || char.IsLetterOrDigit (c))
* return (int)XState.Entity;
* else if (c == ';') return PopState ();
* else LogWarning ("Malformed entity");
* break;
*/
case XState.ProcessingInstruction:
switch (c)
{
case '<':
break;
case '?':
return((int)XState.ProcessingInstructionClosing);
default:
return((int)XState.ProcessingInstruction);
}
break;
case XState.ProcessingInstructionClosing:
switch (c)
{
case '<':
break;
case '?':
return((int)XState.ProcessingInstructionClosing);
case '>':
{
XProcessingInstruction n = (XProcessingInstruction)Nodes.Pop();
n.End(Position);
if (BuildTree)
{
((XContainer)Nodes.Peek()).AddChildNode(n);
}
return((int)XState.Free);
}
default:
return((int)XState.ProcessingInstruction);
}
break;
case XState.CommentOpening:
if (c == '-')
{
Nodes.Push(new XComment(Position - "<!--".Length));
return((int)XState.Comment);
}
else
{
break;
}
case XState.Comment:
if (c == '-')
{
return((int)XState.CommentClosing);
}
else
{
return((int)XState.Comment);
}
case XState.CommentClosing:
if (StateLength == 0)
{
if (c == '-')
{
return((int)XState.CommentClosing);
}
else
{
return((int)XState.Comment);
}
}
else if (StateLength > 0)
{
if (c == '>')
{
XComment n = (XComment)Nodes.Pop();
n.End(Position);
if (BuildTree)
{
((XContainer)Nodes.Peek()).AddChildNode(n);
}
}
else
{
LogWarning("The string '--' should not appear in comments.");
}
if (c == '-')
{
return((int)XState.CommentClosing);
}
else
{
return((int)XState.Comment);
}
}
else
{
break;
}
}
if (c == '<')
{
return(UnexpectedOpeningTag);
}
return((int)XState.Malformed);
}