public override bool Equals(object ob)
{
if (ob == this)
{
return(true);
}
if (!(ob is DTDItem))
{
return(false);
}
DTDItem other = (DTDItem)ob;
if (Cardinal == null)
{
if (other.Cardinal != null)
{
return(false);
}
}
else
{
if (!Cardinal.Equals(other.Cardinal))
{
return(false);
}
}
return(true);
}
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());
}
}
}
protected void RemoveElements(Hashtable h, DTD dtd, DTDItem item)
{
if (item is DTDName)
{
h.Remove(((DTDName)item).Value);
}
else if (item is DTDContainer)
{
foreach (DTDItem dtditem in ((DTDContainer)item).Items)
{
RemoveElements(h, dtd, dtditem);
}
}
}
public static void DumpDtdItem(DTDItem item)
{
if (item == null)
{
return;
}
if (item is DTDAny)
{
Console.Write("Any");
}
else if (item is DTDEmpty)
{
Console.Write("Empty");
}
else if (item is DTDName)
{
Console.Write(((DTDName)item).Value);
}
else if (item is DTDChoice)
{
Console.Write("(");
List <DTDItem> items = ((DTDChoice)item).Items;
bool isFirst = true;
foreach (DTDItem dtditem in items)
{
if (!isFirst)
{
Console.Write("|");
}
isFirst = false;
DumpDtdItem(dtditem);
}
Console.Write(")");
}
else if (item is DTDSequence)
{
Console.Write("(");
List <DTDItem> items = ((DTDSequence)item).Items;
bool isFirst = true;
foreach (DTDItem dtditem in items)
{
if (!isFirst)
{
Console.Write(",");
}
isFirst = false;
DumpDtdItem(dtditem);
}
Console.Write(")");
}
else if (item is DTDMixed)
{
Console.Write("(");
List <DTDItem> items = ((DTDMixed)item).Items;
bool isFirst = true;
foreach (DTDItem dtditem in items)
{
if (!isFirst)
{
Console.Write(",");
}
isFirst = false;
DumpDtdItem(dtditem);
}
Console.Write(")");
}
else if (item is DTDPCData)
{
Console.Write("#PCDATA");
}
if (item.Cardinal == DTDCardinal.ZEROONE)
{
Console.Write("?");
}
else if (item.Cardinal == DTDCardinal.ZEROMANY)
{
Console.Write("*");
}
else if (item.Cardinal == DTDCardinal.ONEMANY)
{
Console.Write("+");
}
}