Boy that sure seems like a bug..weird. adding. can I link to that page you sent
or will it disappear sometime in the future?
Ter
On Mar 12, 2011, at 8:06 PM, Michael Nygard wrote:
> Hi all,
>
> Here's a small fragment of an AST grammar:
>
> qualifiedNameList
> : qnames+=qualifiedName (',' qnames+=qualifiedName )*
> -> ^(TYPEREF[$qnames.text])+
> ;
>
> qualifiedName
> : IDENTIFIER ('.' IDENTIFIER )*
> -> {new CommonTree(new CommonToken(QNAME, $qualifiedName.text))}
> ;
>
> I'm trying to manipulate the tree so it's easy to process from Clojure, by
> reducing some AST nodes down to text. ANTLR seems OK with this construct, but
> the code that it generates won't compile:
>
> /Users/mtnygard/work/atg-xref/indexer/src/gen-java/ImaginaryNodeBugParser.java:139:
> illegal start of expression
> if ( !() ) {
> ^
> /Users/mtnygard/work/atg-xref/indexer/src/gen-java/ImaginaryNodeBugParser.java:142:
> illegal start of expression
> while ( ) {
> ^
>
> Sure enough, when I check the generated code, I see conditionals that are
> completely empty! Is this a bug in codegen for the Java runtime, or am I
> doing something wrong with my cardinality?
>
> The whole grammar, the generated parser source, and the errors are visible at
> https://gist.github.com/867853.
>
> Cheers,
> -Michael Nygard
>
>
>
> Michael T. Nygard
> [email protected]
> http://www.michaelnygard.com/
>
> Release It! Design and Deploy Production-Ready Software
> http://bit.ly/ReleaseIt
>
> Beautiful Architecture
> http://bit.ly/BeautifulArchitecture
>
> 97 Things Every Software Architect Should Know
> http://bit.ly/97Things
>
>
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