private IExpression ParseKeywordConstant(IEnumerator <IToken> tokens)
{
var token = tokens.Current;
var constant = default(Object);
if (token.Is(Keywords.New))
{
return(ParseObject(tokens));
}
else if (token.Is(Keywords.Await))
{
return(ParseAwait(tokens));
}
else if (token.Is(Keywords.Delete))
{
return(ParseDelete(tokens));
}
else if (Keywords.TryGetConstant(token.Payload, out constant))
{
var expr = ConstantExpression.From(constant, token);
tokens.NextNonIgnorable();
return(expr);
}
return(ParseInvalid(ErrorCode.KeywordUnexpected, tokens));
}
