[antlr-interest] nondeterminism warning?

[dima]

> 
> 
> To understand this warning you have to be very familiar with "linear 
> approximate lookahead".
> 
> In your case, antlr needs to compute exit branch to know when to leave a 
> loop, and it will use linear approximate lookahead(instead of full 
> LL(K)) to do that. Normally there are several exit paths for a rule, for 
> example:
> "[ assembly {"
> and "[ xxx :"
>
> With linear approximate lookahead, antlr will compress them so you get 
> the warning for "[ assembly  :".
> 
 
 Many thanks Xue Yong Zhi!
It's 100% what you written.
 
My generated c_unit method has two if statements:
     1.  if((LA(1)==LBRACK) && (LA(2)==ASSEMBLY) && (LA(3)==COLON))
         {
               global_attributes();
         }
         ....
     2. if((LA(1)==CLASS || LA(1)==LBRACK))
         {
              class_declaration();
         }
 
 Both of them are true for "[ assembly :". Therefore I get this warning!
Nevertheless works my parser correct, because the global attributes will
be consumed on the first statement.
 
 So, over again
Many thanks!
 
 Dima.