/// <summary>first '(' has been consumed</summary>
/// <exception cref="System.SqlSyntaxErrorException" />
private Char FunctionChar()
{
Char chr;
for (IList<IExpression> tempExprList = new List<IExpression>();;)
{
var tempExpr = Expression();
tempExprList.Add(tempExpr);
switch (lexer.Token())
{
case MySqlToken.PuncComma:
{
lexer.NextToken();
continue;
}
case MySqlToken.PuncRightParen:
{
lexer.NextToken();
chr = new Char(tempExprList, null);
chr.SetCacheEvalRst(cacheEvalRst);
return chr;
}
case MySqlToken.KwUsing:
{
lexer.NextToken();
var tempStr = lexer.GetStringValue();
Match(MySqlToken.Identifier);
Match(MySqlToken.PuncRightParen);
chr = new Char(tempExprList, tempStr);
chr.SetCacheEvalRst(cacheEvalRst);
return chr;
}
default:
{
throw Err("expect ',' or 'USING' or ')' but is " + lexer.Token());
}
}
}
}
public virtual void Visit(Char node)
{
Visit((FunctionExpression)node);
}
public void Visit(Char node)
{
VisitChild(2, false, false, node.Arguments);
}