/// <summary>
/// run step 123.
/// </summary>
/// <returns></returns>
public override Expr Parse()
{
// avg min max sum count
string aggregate = _tokenIt.NextToken.Token.Text.ToLower();
var next = _tokenIt.Peek().Token;
Expr exp = null;
// 1. sum( <expression> )
if (next == Tokens.LeftParenthesis)
{
_tokenIt.Advance(2);
exp = _parser.ParseExpression(Terminators.ExpParenthesisEnd, passNewLine: false);
_tokenIt.Expect(Tokens.RightParenthesis);
}
// 2. sum of <expression>
else if (string.Compare(next.Text, "of", StringComparison.InvariantCultureIgnoreCase) == 0)
{
_tokenIt.Advance(2);
exp = _parser.ParseExpression(null, false, true, passNewLine: false);
}
var aggExp = new AggregateExpr(aggregate, exp);
return(aggExp);
}
/// <summary>
/// run step 123.
/// </summary>
/// <returns></returns>
public override Expr Parse()
{
// avg min max sum count
string aggregate = _tokenIt.NextToken.Token.Text.ToLower();
var next = _tokenIt.Peek().Token;
Expr exp = null;
// 1. sum( <expression> )
if (next == Tokens.LeftParenthesis)
{
_tokenIt.Advance(2);
exp = _parser.ParseExpression(Terminators.ExpParenthesisEnd, passNewLine: false);
_tokenIt.Expect(Tokens.RightParenthesis);
}
// 2. sum of <expression>
else if (string.Compare(next.Text, "of", StringComparison.InvariantCultureIgnoreCase) == 0)
{
_tokenIt.Advance(2);
exp = _parser.ParseExpression(null, false, true, passNewLine: false);
}
var aggExp = new AggregateExpr(aggregate, exp);
return aggExp;
}