[antlr-interest] (newbie problem)out of memory problem

[ali azimi]

Dear all,
   
  Thank you in advance for your time.
   
  I have written the following grammar and rewrite rule. However, when I try to generate code it produces some problems (like java out of memory and I am sure the problem in my grammar comes from this rule). Could you recommend a better way of writing it? 
   
                 
  blocksubstructuredefinition
         :'substructure' qualifier? blocksubstructurename? end'endsubstructure'qualifier? blocksubstructurename? end 
          (entityinsystem+ ->^('substructure' qualifier? blocksubstructurename? end 'endsubstructure'qualifier? blocksubstructurename? end  entityinsystem+ ) 
              |channelconnection+ ->^('substructure' qualifier? blocksubstructurename? end'endsubstructure'qualifier? blocksubstructurename? end  channelconnection+ )
              )
              ;
   
  Best wishes;
   
  Al

 
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