[antlr-interest] conditional tree jumping,

[Craig Main]

Hi,

 

Is there any way of only evaluating the true part when the condition is
true, and the false part if the condition is false in the below tree?

 

statement                          {log.Debug(null); object result = null;}


                                 : #(ASSIGN id:ID result=expression {
log.Info(string.Format("{0} = {1}", id.getText(), result)); } ) 

                                 | #(TOK_CONST cid:ID ASSIGN result=term)
{log.Info("constant decl");}

                                 | {log.Debug("inside");}

                                   #(TOK_IF condition (statement)*
({log.Debug("in-else");} TOK_ELSE (statement)* {log.Debug("out-else");})?)

                                   {log.Debug("outside");}

                                 ;

 

condition                        

returns [object result]             {log.Debug(null); result = null; object
l, r;}

                                 : #(TOK_OR l=condition r=condition)

                                  | #(TOK_AND l=condition r=condition)

                                  | #(NOT_EQUAL l=condition r=condition)

                                  | #(EQUAL l=condition r=condition)

                                  | #(LTHAN l=condition r=condition)

                                  | #(GTHAN l=condition r=condition)

                                  | #(LTE l=condition r=condition)

                                  | #(GTE l=condition r=condition)

                                 | result=expression
{log.Debug("condition->expression");}

                                 ;

 

Regards

Craig

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.antlr.org/pipermail/antlr-interest/attachments/20060218/44c9b6c0/attachment.html