public override void ExitSubQueryExpr(MiniSqlParserParser.SubQueryExprContext context)
{
var comments = this.GetComments(context);
var query = (IQuery)_stack.Pop();
var node = new SubQueryExp(query, comments);
_stack.Push(node);
}
public sealed override void VisitBefore(SubQueryExp expr)
{
if (!expr.IsUsedInResultColumn())
{
++_queryExprNestLevel;
}
else
{
_subQueryStack.Push(SubQueryType.InResults);
}
}
public sealed override void VisitAfter(SubQueryExp expr)
{
if (!expr.IsUsedInResultColumn())
{
--_queryExprNestLevel;
}
else
{
// SELECT句サブクエリの目印をつける
_stack.Peek().IsSubQueryInResults = true;
_subQueryStack.Pop();
}
}
public override void VisitAfter(SubQueryExp expr)
{
var operand = (IQuery)_stack.Pop();
if (object.ReferenceEquals(expr.Query, operand))
{
_stack.Push(expr);
return;
}
var node = new SubQueryExp(operand, expr.Comments.Clone());
_stack.Push(node);
}
public override void VisitAfter(SubQueryExp expr)
{
if (expr.IsUsedInResultColumn())
{
// SELECT句サブクエリの場合
if (this.IsNotInMainResultsSource())
{
return;
}
_scopeStack.Pop();
}
else
{
--_queryExprNestLevel;
}
}
public override void VisitBefore(SubQueryExp expr)
{
if (expr.IsUsedInResultColumn())
{
// SELECT句サブクエリの場合
if (this.IsNotInMainResultsSource())
{
return;
}
_scopeStack.Push(new Scope(FromOrResult.ResultQuery, false));
}
else
{
++_queryExprNestLevel;
}
}
virtual public void VisitAfter(SubQueryExp expr)
{
}
virtual public void VisitBefore(SubQueryExp expr)
{
}
public void VisitAfter(SubQueryExp expr)
{
_visitor.VisitAfter(expr);
}
public void VisitBefore(SubQueryExp expr)
{
_visitor.VisitBefore(expr);
}
public override void VisitAfter(SubQueryExp expr)
{
--_inSubQueryExp;
}
public override void VisitBefore(SubQueryExp expr)
{
++_inSubQueryExp;
}