[antlr-interest] Changing AST order in a complex rule

[Ney, Richard]

Never mind, I should have done a little more RTFM. Taking over tree
construction works well for this.

 

select_statement! 

      :     (sc:select_clause trl:table_reference_list (wc:whereClause)?
(gc:group_clause)? (oc:order_clause)?)

      {

            #select_statement = #(select_statement, trl, sc, wc, gc, oc);

      }

      ;

 

-Richard

 

-----Original Message-----
From: Ney, Richard [mailto:richard.ney at aspect.com] 
Sent: Wednesday, March 12, 2003 3:10 PM
To: antlr-interest at yahoogroups.com
Subject: [antlr-interest] Changing AST order in a complex rule

 

I have a simple SQL grammar that has the top rule of:

 

select_statement 

      :     (select_clause table_reference_list (whereClause)?
(group_clause)? (order_clause)?)

      ;

 

Now this creates a basic AST with the elements as the root nodes. Now I want
to change the order of the AST so me tree parser hits the
table_reference_list as its first element. How would I change this rule to
make the AST outcome?

 

-Richard

 

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Richard Ney                                                    Aspect
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