public object ParseWithFixLogic(ITokenStream stream)
{
//WTM: Change: If the script is just a comment, resulting in only an EOF token, parser.ParseWithFixLogic fails.
//The below check works around that.
IToken[] firstTwoTokens = stream.Take(2).ToArray();
if (firstTwoTokens.Length == 1 && firstTwoTokens[0].Type == EOF_TOKEN_TYPE)
{
throw new EOFOnlyException();
}
try
{
return(base.Parse(stream));
}
catch (UnexpectedTokenException ex) when(ex.Token.Value == "endif")
{
bool isFixed = false;
int nesting = 0;
List <IToken> tokens = new List <IToken>();
foreach (var token in stream)
{
if (token.Type == "BranchStartToken")
{
++nesting;
tokens.Add(token);
}
else
{
if (token.Type == "BranchEndToken")
{
nesting = nesting - 1;
if (nesting > -1)
{
tokens.Add(token);
}
else
{
isFixed = true;
nesting = 0; //Clear up the token and nesting will be again 0
}
}
else
{
tokens.Add(token);
}
}
}
if (!isFixed)
{
throw;
}
ArrayTokenStream newTokenStream = new ArrayTokenStream(tokens);
object newAST = this.Parse(newTokenStream);
return(newAST);
}
}