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https://issues.apache.org/jira/browse/ODE-298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marc Bischof updated ODE-298:
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Attachment: SimPELWalker.g
Here is a patch for the tree-grammar
> Errors in SimPEL Grammar
> ------------------------
>
> Key: ODE-298
> URL: https://issues.apache.org/jira/browse/ODE-298
> Project: ODE
> Issue Type: Bug
> Environment: ANTLR
> Reporter: Marc Bischof
> Priority: Trivial
> Attachments: SimPEL.g, SimPELWalker.g
>
>
> I looked at the SimPEL-Grammar and I think you've missed something when
> modeling non-empty lists.
> I also propose that the rewrite-rules should be correct in the grammar
> so the translation into tree-grammar would be clearer and less error
> prone.
>
> Here a short example:
> In the param_block-rule you've modeled an optional ID-list. But in the
> rewrite-rule this is missing. So I think that there should be $in* (in
> general this should be a $in+, but in this special case the complete list is
> optional).
> When this was done in the proposed way in the grammar, it would also affect
> the tree-grammar. There, the param-block-rule is currently modeled with $ID+
> instead of $ID*.
> So I went over the grammar and looked for these errors (changes in
> tree-grammar analog):
> * param_block : '{' ('|' in+=ID (',' in+=ID)* '|')? proc_stmt+ '}' ->
> ^(SEQUENCE $in proc_stmt+);
> > param_block : '{' ('|' in+=ID (',' in+=ID)* '|')? proc_stmt+ '}' ->
> ^(SEQUENCE $in* proc_stmt+);
> * flow : 'parallel' b+=body ('and' b+=body)* -> ^(FLOW $b);
> > flow : 'parallel' b+=body ('and' b+=body)* -> ^(FLOW $b+);
> * join : 'join' '(' k+=ID (',' k+=ID)* (',' expr)? ')' -> ^(JOIN $k expr?);
> > join : 'join' '(' k+=ID (',' k+=ID)* (',' expr)? ')' -> ^(JOIN $k+
> expr?);
> * with_ex : 'with' '(' wm+=with_map (',' wm+=with_map)* ')' body -> ^(WITH
> $wm* body);
> > with_ex : 'with' '(' wm+=with_map (',' wm+=with_map)* ')' body -> ^(WITH
> $wm+ body);
> * partner_link : 'partnerLink' pl+=ID (',' pl+=ID)* -> ^(PARTNERLINK $pl);
> > partner_link : 'partnerLink' pl+=ID (',' pl+=ID)* -> ^(PARTNERLINK $pl+);
> * correlation : '{' corr_mapping (',' corr_mapping)* '}' -> ^(CORRELATION
> corr_mapping*);
> > correlation : '{' corr_mapping (',' corr_mapping)* '}' -> ^(CORRELATION
> corr_mapping+);
> * path_expr : pelmt+=ns_id ('.' pelmt+=ns_id)* -> ^(PATH $pelmt);
> > path_expr : pelmt+=ns_id ('.' pelmt+=ns_id)* -> ^(PATH $pelmt+);
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