public override SqlExpression VisitAtom(PlSqlParser.AtomContext context)
{
var subquery = context.subquery();
if (subquery != null && !subquery.IsEmpty)
{
return(Visit(subquery));
}
var constant = context.constant();
if (constant != null && !constant.IsEmpty)
{
return(Visit(constant));
}
var bindVariable = context.bind_variable();
if (bindVariable != null && !bindVariable.IsEmpty)
{
return(Visit(bindVariable));
}
var group = context.group();
if (group != null && !group.IsEmpty)
{
return(Visit(group));
}
return(base.VisitAtom(context));
}
/// <summary>
/// atom :
/// table_element outer_join_sign
/// | bind_variable
/// | constant
/// | general_element
/// | LEFT_PAREN subquery RIGHT_PAREN subquery_operation_part*
/// | LEFT_PAREN expressions RIGHT_PAREN
/// ;
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public override object VisitAtom([NotNull] PlSqlParser.AtomContext context)
{
object result = null;
var constant = context.constant();
if (constant != null)
{
result = VisitConstant(constant);
}
else
{
Stop();
var bind_variable = context.bind_variable();
if (bind_variable != null)
{
result = VisitBind_variable(bind_variable);
}
else
{
Stop();
var general_element = context.general_element();
if (general_element != null)
{
result = VisitGeneral_element(general_element);
}
else
{
var table_element = context.table_element();
if (table_element != null)
{
result = VisitTable_element(table_element);
}
else
{
Stop();
/// | LEFT_PAREN subquery RIGHT_PAREN subquery_operation_part*
var subquery = context.subquery();
if (subquery != null)
{
result = VisitSubquery(subquery);
var subquery_operation_part = context.subquery_operation_part();
foreach (var item in subquery_operation_part)
{
}
}
else
{
/// | LEFT_PAREN expressions RIGHT_PAREN
Stop();
var expressions = context.expressions();
result = VisitExpressions(expressions);
}
Stop();
}
}
}
}
Debug.Assert(result != null);
return(result);
}