internal void Add(string expression, XmlNamespaceManager names, object item, bool forceExternal)
{
bool flag = false;
OpcodeBlock newBlock = new OpcodeBlock();
newBlock.Append(new NoOpOpcode(OpcodeID.QueryTree));
if (!forceExternal)
{
try
{
MultipleResultOpcode opcode;
ValueDataType none = ValueDataType.None;
newBlock.Append(QueryMatcher.CompileForInternalEngine(expression, names, QueryCompilerFlags.InverseQuery, out none));
if (!this.match)
{
opcode = new QueryMultipleResultOpcode();
}
else
{
opcode = new MatchMultipleResultOpcode();
}
opcode.AddItem(item);
newBlock.Append(opcode);
flag = true;
newBlock = new OpcodeBlock(this.elim.Add(item, newBlock.First));
base.subExprVars = this.elim.VariableCount;
}
catch (QueryCompileException)
{
}
}
if (!flag)
{
newBlock.Append(QueryMatcher.CompileForExternalEngine(expression, names, item, this.match));
}
QueryTreeBuilder builder = new QueryTreeBuilder();
base.query = builder.Build(base.query, newBlock);
this.lastLookup[item] = builder.LastOpcode;
}