Hi Jim, On Oct 15, 2010, at 7:52 PM, "Jim Idle" <[email protected]> wrote:
> > >> -----Original Message----- >> From: [email protected] [mailto:antlr-interest- >> [email protected]] On Behalf Of Stephanie >> Sent: Friday, October 15, 2010 8:05 AM >> To: [email protected] >> Cc: [email protected] >> Subject: [antlr-interest] Tree grammar: How to handle rule arguments >> >> Hello, >> >> I have implemented a parser grammar as well as a tree parser for a >> little Java-like language. I have encounter difficulties with the >> following productions >> >> >> >> identList[Object varType] >> >> : id=Identifier ( ',' Identifier )* >> >> -> ^( VarDecl[$id, "VarDecl"] { $varType } Identifier )+ >> > > What does Identifier refer to here in your rewrite? It is just the last > variable that is parsed. When you are looking in Works, you are probably > looking at the parse tree and not the AST. Why are you trying to rewrite the > first token to an Imaginary? > > What you want is: > > : id+=Identifier (',' id+=Identifier)* > > ->^(VarDecl {$varType} $id)+ No, I was looking at the AST in ANTLRWorks and the AST was produced as described. I see that I should have named the starred occurrence of Identifier as well. What is the meaning of id+= above? > Then reflect that in your tree parser. I have never quite seen the reason > behind eliding the fact that multiple declarations were made on the same > type, but if that is what you want, then you need to do it as above. OK, thanks a lot. Stephanie > > Jim > > > > List: http://www.antlr.org/mailman/listinfo/antlr-interest > Unsubscribe: > http://www.antlr.org/mailman/options/antlr-interest/your-email-address List: http://www.antlr.org/mailman/listinfo/antlr-interest Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your-email-address -- You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en.
