private static Expr ParseBinOpSeq(Parser parser, bool uniOpPrivilege = false)
{
var operands = new List <Expr>();
var operators = new List <Token>();
while (true)
{
try
{
operands.Add(ParseOperand(parser));
if (uniOpPrivilege)
{
break;
}
operators.Add(ParseOperator(parser));
} catch (ParserError ex)
{
if (!ex.IsExceptionFictive())
{
throw ex;
}
else
{
break;
}
}
}
if (operands.Count == 0)
{
throw new ParserError(
new FailedConsumer(), parser.Cursor
);
}
else if (operators.Count > operands.Count - 1)
{
throw new ParserError(
new UnexpectedTokenException(operators.Last().Type),
operators.Last().Pos
);
}
else if (operands.Count == 1)
{
return(operands[0]);
}
return(ShuntingYard.Go(operands, operators));
}