[antlr-interest] Skipping grammar

pwolleba pwolleba at yahoo.no
Tue Oct 7 00:18:58 PDT 2003


I am pretty new to ANTLR so maybe this question is very trivial, if 
so even better then maybe it is a simple solution to my problem. 
Anyway I am struggling with writing a new parser in ANTLR to replace 
and old implementation in Flex/Bison, this to make a product that are 
open for implementation from both C++ as well as Java. 

The parser will parse a language that we are using to build 
databases, and it must support this language 100% if to be accepted. 

Here is the code cutting that I am struggling with.

method name{
  SomeText!()text[];
  if(a < b && b < c){
     SomeText()!()[];
  }
  else{
     SomeText()!()[];
  };
};

I am not interesting in the expression that is inside the name 
method, I just want ANTLR to grab the text for me, and put it as a 
node inside the tree. The problem is the fact that the if/else 
statement is ending with a "};" which is the same token as the method 
end token, and I have no guarantee that there could be more that one 
inside the method. A solution would be to make a counter that will 
increase for each "{" and decrease for each "}", then I would know 
when the method ends. To my frustration I don't know how I should 
make such a counter in ANTRL, that still supports implement in both 
Java or C++ code.
I would be really really happy if someone could help me with this 
problem!

Best reagards,

Per



 

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