private Expression VisitExists(MethodCallExpression node, bool isNotWrap = false)
{
SQLWriter.Exists();
SQLWriter.OpenBrace();
bool join = buildJoin;
buildJoin = false;
buildSelect = buildFrom = true;
if (isNotWrap || node.Arguments.Count == 1)
{
UnWrap(() =>
{
buildExists = true;
base.Visit(node.Arguments[0]);
buildExists = false;
if (node.Arguments.Count > 1)
{
_whereSwitch.Execute();
WrapNot(() =>
{
base.Visit(node.Arguments[1]);
});
}
});
}
else
{
UnWrap(() =>
{
int length = 0;
WriteAppendAtFix(() =>
{
buildExists = true;
base.Visit(node.Arguments[0]);
buildExists = false;
}, () =>
{
base.Visit(node.Arguments[1]);
length = SQLWriter.Length;
}, index =>
{
SQLWriter.AppendAt = SQLWriter.Length - (length - index);
_whereSwitch.Execute();
});
});
}
SQLWriter.CloseBrace();
buildJoin = join;
return(node);
}