private SeparatedSyntaxList <ExpressionSyntax> ParseArgumentExpressionList(int minimumNumberOfArguments)
{
if (Current.Kind == SyntaxKind.RightParenthesisToken && minimumNumberOfArguments == 0)
{
return(SeparatedSyntaxList <ExpressionSyntax> .Empty);
}
var expressionsWithCommas = new List <SyntaxNodeOrToken>();
var minimumNumberOfItems = minimumNumberOfArguments * 2 - 1;
while (true)
{
var oldIndex = _tokenIndex;
var argument = ParseExpression();
expressionsWithCommas.Add(argument);
if (_tokenIndex == oldIndex)
{
SkipTokens(t => SyntaxFacts.CanFollowArgument(t.Kind));
}
var missingComma = Current.Kind != SyntaxKind.CommaToken;
var enoughParameters = minimumNumberOfItems <= expressionsWithCommas.Count;
var canStartExpression = SyntaxFacts.CanStartExpression(Current.Kind);
if (missingComma && enoughParameters && !canStartExpression)
{
break;
}
var comma = Match(SyntaxKind.CommaToken);
expressionsWithCommas.Add(comma);
}
return(new SeparatedSyntaxList <ExpressionSyntax>(expressionsWithCommas));
}