/// <returns>upper-case, empty is possible</returns>
public virtual string GetAliasUnescapeUppercase()
{
if (alias == null || alias.Length <= 0)
{
return(alias);
}
if (aliasUpEscape != null)
{
return(aliasUpEscape);
}
switch (alias[0])
{
case '`':
{
return(aliasUpEscape = Identifier.UnescapeName(alias, true));
}
case '\'':
{
return
(aliasUpEscape =
LiteralString.GetUnescapedString(Runtime.Substring(alias, 1, alias.Length - 1), true));
}
case '_':
{
var ind = -1;
for (var i = 1; i < alias.Length; ++i)
{
if (alias[i] == '\'')
{
ind = i;
break;
}
}
if (ind >= 0)
{
var st = new LiteralString(Runtime.Substring(alias, 0, ind),
Runtime.Substring(alias, ind + 1, alias.Length - 1), false);
return(aliasUpEscape = st.GetUnescapedString(true));
}
goto default;
}
default:
{
return(aliasUpEscape = alias.ToUpper());
}
}
}
