protected void ParseChildren(DTDElement element)
{
DTDContainer choiceSeq = ParseChoiceSequence();
Token token = Scanner.Peek();
choiceSeq.Cardinal = ParseCardinality();
if (token.Type == Scanner.QUES)
{
choiceSeq.Cardinal = DTDCardinal.ZEROONE;
}
else if (token.Type == Scanner.ASTERISK)
{
choiceSeq.Cardinal = DTDCardinal.ZEROMANY;
}
else if (token.Type == Scanner.PLUS)
{
choiceSeq.Cardinal = DTDCardinal.ONEMANY;
}
else
{
choiceSeq.Cardinal = DTDCardinal.NONE;
}
element.Content = choiceSeq;
}
protected DTDContainer ParseChoiceSequence()
{
TokenType separator = null;
DTDContainer cs = null;
for (;;)
{
DTDItem item = ParseCp();
Token token = Scanner.Get();
if ((token.Type == Scanner.PIPE) ||
(token.Type == Scanner.COMMA))
{
if ((separator != null) && (separator != token.Type))
{
throw new DTDParseException(Scanner.GetUriId(),
"Can't mix separators in a choice/sequence",
Scanner.GetLineNumber(), Scanner.GetColumn());
}
separator = token.Type;
if (cs == null)
{
if (token.Type == Scanner.PIPE)
{
cs = new DTDChoice();
}
else
{
cs = new DTDSequence();
}
}
cs.Items.Add(item);
}
else if (token.Type == Scanner.RPAREN)
{
if (cs == null)
{
cs = new DTDSequence();
}
cs.Items.Add(item);
return(cs);
}
else
{
throw new DTDParseException(Scanner.GetUriId(),
"Found invalid token in sequence: " +
token.Type.Name, Scanner.GetLineNumber(), Scanner.GetColumn());
}
}
}
public override bool Equals(object ob)
{
if (ob == this)
{
return(true);
}
if (!(ob is DTDContainer))
{
return(false);
}
if (!base.Equals(ob))
{
return(false);
}
DTDContainer other = (DTDContainer)ob;
return(Items.Equals(other.Items));
}