/// <summary>
/// Recupera a chamada de função.
/// </summary>
/// <param name="enumerator"></param>
/// <param name="configuration"></param>
/// <param name="containerStop"></param>
/// <param name="callName"></param>
/// <returns></returns>
private static ConditionalTerm GetFunctionCall(ref IEnumerator <Text.InterpreterExpression.Expression> enumerator, Text.InterpreterExpression.ILexerConfiguration configuration, char?containerStop, Column callName)
{
var call = callName;
var pars = new List <ConditionalTerm>();
var commaExpression = _conditionalLexer.TokenParser.GetTerm((int)Colosoft.Text.InterpreterExpression.TokenID.Comma);
var token = enumerator.Current;
var distinctFlag = false;
while (!token.ToString().Equals(")"))
{
if (!enumerator.MoveNext())
{
break;
}
token = enumerator.Current;
if (token.ToString().Equals(")"))
{
enumerator.MoveNext();
break;
}
var termText = enumerator.Current.Text;
ConditionalTerm term = null;
while (true)
{
term = GetTerm(ref enumerator, configuration);
if (term is Column && StringComparer.InvariantCultureIgnoreCase.Equals(((Column)term).Name, "DISTINCT"))
{
enumerator.MoveNext();
distinctFlag = true;
}
else
{
break;
}
}
if (StringComparer.InvariantCultureIgnoreCase.Equals(call.Name, "CAST") && pars.Count == 1 && term is Column)
{
term = new Constant(((Column)term).Name);
}
if (!enumerator.MoveNext())
{
pars.Add(term);
break;
}
if (Conditional.IsConditionalOperator(enumerator.Current))
{
var left = term;
var oper = new Operator(enumerator.Current.Text);
var right = GetTerm(ref enumerator);
term = new Conditional(left, oper, right);
if (!enumerator.MoveNext())
{
pars.Add(term);
break;
}
}
if (Formula.IsArithmeticOperator(enumerator.Current))
{
term = GetFormula(ref enumerator, configuration, term);
}
if ((token.Token == (int)Colosoft.Text.InterpreterExpression.TokenID.Identifier || Colosoft.Query.Parser.SqlTokenParser.IsSqlAnsiFunction(token.Token)) && enumerator.Current.Token == (int)Colosoft.Text.InterpreterExpression.TokenID.LParen)
{
var columnExpression = ParserColumnExpression(termText);
term = GetFunctionCall(ref enumerator, configuration, ')', (columnExpression as Column) ?? new Column(termText));
if (Formula.IsArithmeticOperator(enumerator.Current))
{
term = GetFormula(ref enumerator, configuration, term);
}
pars.Add(term);
token = enumerator.Current;
}
else
{
pars.Add(term);
token = enumerator.Current;
}
if (token.ToString().Equals(")"))
{
enumerator.MoveNext();
break;
}
if (!token.ToString().Equals(commaExpression))
{
throw new ConditionalParserException(string.Format("Expected comma after '{0}'", pars.Last().ToString()));
}
}
return(new FunctionCall()
{
Call = call,
Parameters = pars.ToArray(),
Options = distinctFlag ? FunctionCallOptions.Distinct : FunctionCallOptions.None
});
}
