private SeparatedSyntaxList<ParameterSyntax> ParseSeparatedParameters()
{
var parameters = ImmutableArray.CreateBuilder<SeparatedSyntaxNode<ParameterSyntax>>();
var parseNext = true;
while (parseNext = Current != TokenKind.CloseParenthesis && Current != TokenKind.EoF)
{
var parameter = ParseParameterSyntax();
parseNext = Current == TokenKind.Comma;
var comma = Current == TokenKind.Comma ? MatchToken(TokenKind.Comma) : null;
if (parseNext && Current == TokenKind.CloseParenthesis)
diagnostics.Syntax.UnexpectedToken(comma, "Unexpected comma");
var separatedParameter = new SeparatedSyntaxNode<ParameterSyntax>(parameter, comma);
parameters.Add(separatedParameter);
}
return new SeparatedSyntaxList<ParameterSyntax>(parameters.ToImmutable());
}
private SeparatedSyntaxList<Expression> ParseArguments()
{
var expressions = ImmutableArray.CreateBuilder<SeparatedSyntaxNode<Expression>>();
var parseNext = true;
while (parseNext && Current != TokenKind.CloseParenthesis && Current != TokenKind.EoF)
{
var expression = ParseExpression();
parseNext = Current == TokenKind.Comma;
var comma = Current == TokenKind.Comma ? MatchToken(TokenKind.Comma) : null;
if (parseNext && Current == TokenKind.CloseParenthesis)
diagnostics.Syntax.UnexpectedToken(comma, "Unexpected comma");
var separatedExpression = new SeparatedSyntaxNode<Expression>(expression, comma);
expressions.Add(separatedExpression);
}
return new SeparatedSyntaxList<Expression>(expressions.ToImmutable());
}