[antlr-interest] Parse rule to add multiple homogeneous branches under a root node?

[Stephan Opfer]

My first guess would be

public parse :  branches EOF -> ^(ROOT branches);

branches: (BRANCH)*;

Does that help?

Stephan



On 05/08/2012 02:25 PM, Peter Bosch wrote:
> Okay, I've tried to boil it down to a simple test case that illustrates
> (probably in my parse rule) what I'm doing wrong. Target is C#.
> 
>  
> 
> //-----------------------------
> 
> // TreeTestInput.txt
> 
> Branch1
> Branch2
> Branch3
> 
>  
> 
> //-----------------------------
> 
> // Desired output:
> 
> ROOT
> 
>    Branch1
> 
>    Branch2
> 
>    Branch3
> 
> //-----------------------------
> 
> // Actual output:
> 
> ROOT
> 
>    Branch3
> 
>  
> 
> //-----------------------------
> 
> // TreeTest.g
> 
> grammar TreeTest;
> 
>  
> 
> options {
> 
>   language=CSharp3;
> 
>   output=AST;
> 
> }
> 
>  
> 
> tokens {
> 
>     ROOT;
> 
> }
> 
>  
> 
> public parse
> 
>     :  ( r=BRANCH )* EOF -> ^(ROOT $r*)
> 
>     ;
> 
>     
> 
> BRANCH
> 
>        :  'Branch' ('0'..'9')
> 
>        ;
> 
>               
> 
> EOL : ('\r'? '\n') {$channel=Hidden;} ; 
> 
> WS  : (' '|'\t'|'\f'| EOL)+ {$channel=Hidden;} ;
> 
>  
> 
>  
> 
> Peter Bosch
> Highpoint Software Systems
> E-mail :  <mailto:pbosch at highpointsoftware.com> pbosch at highpointsoftware.com
> Phone : 262-893-5400
> P-Mail : S42 W27451 Oak Grove Lane Waukesha, WI, 53189
> Useful and Usable Decision Support & Technical Software
> 
>  
> 
> 
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