[antlr-interest] Why waiting timeout? why cannot find symbol?

[Gavin Lambert]

At 06:36 23/11/2008, Su Zhang wrote:
 >I meet two very strange problems when debugging my program,the
 >first one is "timeout waiting connect remote parser",

Are you compiling the grammar with -debug so it includes the debug 
code, and running it before you select Debug Remote?

(If your target language is Java, as it seems to be, then you 
shouldn't need to use Debug Remote anyway.  Just use the normal 
Debug.  But of course before that'll work you'll need to fix your 
compilation errors.)

 >the other is cannot find symbol
 >[11:17:54] symbol  : variable b64
 >[11:17:54] location: class assignment6Parser
 >[11:17:54]             b64=i.getText();
[...]
 >base  returns [String b64 ]	
 >     : i= ID {!(i.getText().contains("-"))
 >}?{!(i.getText().contains("_"))}? {b64=i.getText();}
 >     ;

This is where that's coming from.  This is because you're not 
using the correct syntax to refer to ANTLR-defined symbols, 
neither here nor in any of your other rules.  While you might get 
away with it sometimes, it's bad style and reduces portability.

Instead of writing "b64=i.getText()", you should be using "$b64 = 
$i.text".

You should never refer to a parameter, return value, or label 
defined in the ANTLR grammar without using the $ syntax.